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Catalyst 2950 and Catalyst 2955 Switch Command Reference, 12.1(22)EA7
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Catalyst 2950 and Catalyst 2955 Switch Command Reference (full book in PDF format)
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Index
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Preface
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Using the Command-Line Interface
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Catalyst 2950 and 2955 Switch Cisco IOS Commands - a through r
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Catalyst 2950 and 2955 Switch Cisco IOS Commands - s
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Catalyst 2950 and 2955 Switch Cisco IOS Catalyst 2950 and 2955 Switch Cisco IOS Commands - t through z \r\n
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Catalyst 2955 Alarm Commands
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Catalyst 2950 and 2955 Switch Boot Loader Commands
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Catalyst 2950 and 2955 Switch Debug Commands
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Table Of Contents
show controllers ethernet-controller
show controllers lre link monitor
show ip igmp snooping querier detail
show mac address-table multicast
show mac address-table notification
spanning-tree etherchannel guard misconfig
spanning-tree extend system-id
spanning-tree loopguard default
spanning-tree mst configuration
spanning-tree mst forward-time
spanning-tree mst port-priority
spanning-tree portfast (global configuration)
spanning-tree portfast (interface configuration)
switchport port-security aging
2service password-recovery
Use the service password-recovery global configuration command to enable the password-recovery mechanism (the default). An end user with physical access to the switch can hold down the Mode button and interrupt the boot process while the switch is powering up and can assign a new password. Use the no form of this command to disable part of the password-recovery functionality. When the password-recovery mechanism is disabled, interrupting the boot process is allowed only if the user agrees to set the system back to the default configuration.
service password-recovery
no service password-recovery
This command is available only on Catalyst 2950 Long-Reach Ethernet (LRE) switches.
Syntax Description
This command has no arguments or keywords.
Defaults
The password-recovery mechanism is enabled.
Command Modes
Global configuration
Command History
Usage Guidelines
This command is valid only on Catalyst 2950 LRE switches.
As a system administrator, you can use the no service password-recovery command to disable some of the functionality of the password recovery feature by allowing an end user to reset a password only by agreeing to return to the default configuration.
The password-recovery mechanism has been triggered, butis currently disabled. Access to the boot loader promptthrough the password-recovery mechanism is disallowed atthis point. However, if you agree to let the system bereset back to the default system configuration, accessto the boot loader prompt can still be allowed.Would you like to reset the system back to the default configuration (y/n)?If the user chooses not to reset the system back to the default configuration, the normal boot process continues, as if the Mode button had not been pressed. If you choose to reset the system back to the default configuration, the configuration file in flash memory is deleted and the VLAN database file, flash:vlan.dat (if present) is deleted.
Note
If you use the no service password-recovery command to control end user access to passwords, we recommend that you save a copy of the config file in a location away from the switch in case the end user uses the password recovery procedure and sets the system back to default values. Do not keep a backup copy of the config file on the switch.
If the switch is operating in VTP transparent mode, we recommend that you also save a copy of the vlan.dat file in a location away from the switch.You can verify if password recovery is enabled or disabled by entering the show version privileged EXEC command.
Examples
This example shows how to disable password recovery on a switch so that a user can only reset a password by agreeing to return to the default configuration:
Switch(config)# no service-password recoverySwitch(config)# exitRelated Commands
service-policy
Use the service-policy interface configuration command to apply a policy map defined by the policy-map command to the input of a particular interface. Use the no form of this command to remove the policy map and interface association.
service-policy input policy-map-name
no service-policy input policy-map-name
This command is available only if your switch is running the enhanced software image (EI).
Syntax Description
Defaults
No policy maps are attached to the interface.
Command Modes
Interface configuration
Command History
Usage Guidelines
Only one policy map per ingress interface is supported.
Service policy maps cannot be defined on egress interfaces.
Note
Examples
This example shows how to apply plcmap1 to an ingress interface:
Switch(config)# interface gigabitethernet0/17Switch(config-if)# service-policy input plcmap1You can verify your settings by entering the show policy-map privileged EXEC command.
Related Commands
Creates or modifies a policy map that can be attached to multiple interfaces to specify a service policy.
Displays quality of service (QoS) policy maps.
set
Use the set policy-map class configuration command to classify IP traffic by setting a Differentiated Services Code Point (DSCP) value. Use the no form of this command to remove traffic classification.
set ip dscp new-dscp
no set ip dscp new-dscp
This command is available only if your switch is running the enhanced software image (EI).
Syntax Description
new-dscp
New DSCP value assigned to the classified traffic.
The supported DSCP values are 0, 8, 10, 16, 18, 24, 26, 32, 34, 40, 46, 48, and 56.
Defaults
No traffic classification is defined.
Command Modes
Policy-map class configuration
Command History
Usage Guidelines
The set command can be used in a policy with a match command.
The set command sets the DSCP value for in-profile packets.
Note
To return to policy-map configuration mode, use the exit command. To return to privileged EXEC mode, use the end command.
Note
Examples
This example shows how to assign a DSCP value of 10 to all FTP traffic without any policers:
Switch(config)# policy-map policy_ftpSwitch(config-pmap)# class ftp_classSwitch(config-pmap-c)# set ip dscp 10Switch(config-pmap)# exitYou can verify your settings by entering the show policy-map privileged EXEC command.
Related Commands
setup express
Use the setup express global configuration command to enable Express Setup mode on the switch. This is the default setting. Use the no form of this command to disable Express Setup mode.
setup express
no setup express
This command is available only on Catalyst 2950 switches.
Syntax Description
This command has no arguments or keywords.
Defaults
Express Setup is enabled.
Command Modes
Global configuration
Command History
Usage Guidelines
When Express Setup is enabled on a new (unconfigured) switch, pressing the Mode button for 2 seconds activates Express Setup. You can access the switch through an Ethernet port by using the IP address 10.0.0.1 and then can configure the switch with the web-based Express Setup program or the command-line interface (CLI)-based setup program.
When you press the Mode button for 2 seconds on a configured switch, the mode LEDs start blinking. If you press the Mode button for a total of 10 seconds, the switch configuration is deleted, and the switch reboots. The switch can then be configured like a new switch, either through the web-based Express Setup program or the CLI-based setup program.
Note
If Express Setup is active on the switch, entering the write memory or copy running-configuration startup-configuration privileged EXEC commands deactivates Express Setup. The IP address 10.0.0.1 is no longer valid on the switch, and your connection using this IP address ends.
The primary purpose of the no setup express command is to prevent someone from deleting the switch configuration by pressing the Mode button for 10 seconds.
Examples
This example shows how to enable Express Setup mode:
Switch(config)# setup expressYou can verify that Express Setup mode is enabled by pressing the Mode button:
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Caution
This example shows how to disable Express Setup mode:
Switch(config)# no setup expressYou can verify that Express Setup mode is disabled by pressing the Mode button. The mode LEDs only turn solid green or begin blinking green if Express Setup mode is enabled on the switch.
Related Commands
show access-lists
Use the show access-lists privileged EXEC command to display access control lists (ACLs) configured on the switch.
show access-lists [name | number] [ | {begin | exclude | include} expression]
Syntax Description
Command Modes
Privileged EXEC
Command History
Usage Guidelines
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.
Examples
This is an example of output from the show access-lists command:
Switch# show access-listsStandard IP access list testingaclpermit 10.10.10.2Standard IP access list wizard_1-1-1-2permit 1.1.1.2Extended IP access list 103permit tcp any any eq wwwExtended IP access list CMP-NAT-ACLDynamic Cluster-HSRP deny ip any anyDynamic Cluster-NAT permit ip any anypermit ip host 10.123.222.192 anypermit ip host 10.228.215.0 anypermit ip host 10.245.137.0 anypermit ip host 10.245.155.128 anypermit ip host 10.221.111.64 anypermit ip host 10.216.25.128 anypermit ip host 10.186.122.64 anypermit ip host 10.169.110.128 anypermit ip host 10.146.106.192 anyRelated Commands
show auto qos
Use the show auto qos user EXEC command to display the quality of service (QoS) commands entered on the interfaces on which automatic QoS (auto-QoS) is enabled.
show auto qos [interface [interface-id]]
This command is available only if your switch is running the enhanced software image (EI).
Syntax Description
interface [interface-id]
(Optional) Display auto-QoS information for the specified interface or for all interfaces. Valid interfaces include physical ports.
Command Modes
User EXEC
Command History
12.1(12c)EA1
This command was introduced.
12.1(20)EA2
The information in the command output changed, and the user guidelines were updated.
Usage Guidelines
In releases earlier than Cisco IOS Release 12.1(20)EA2, the show auto qos [interface [interface-id]] command output shows the initial generated auto-QoS configuration.
In Cisco IOS Release 12.1(20)EA2 or later, the show auto qos command output shows only the auto-QoS command entered on each interface. The show auto qos interface interface-id command output shows the auto-QoS command entered on a specific interface.
Use the show running-config privileged EXEC command to display the auto-QoS configuration and the user modifications.
To display information about the QoS configuration that might be affected by auto-QoS, use one of these commands:
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Examples
This is an example of output from the show auto qos command after the auto qos voip cisco-phone and the auto qos voip cisco-softphone interface configuration commands are entered:
Switch> show auto qosFastEthernet0/3auto qos voip cisco-phoneFastEthernet0/4auto qos voip cisco-softphoneFastEthernet0/5auto qos voip cisco-phoneThis is an example of output from the show auto qos interface interface-id command when the auto qos voip cisco-phone interface configuration command is entered:Switch> show auto qos interface fastethernet0/3FastEthernet0/3auto qos voip cisco-phoneThis is an example of output from the show running-config privileged EXEC command when the auto qos voip cisco-phone and the auto qos voip cisco-softphone interface configuration commands are entered:
Switch# show running-configBuilding configuration......!wrr-queue bandwidth 10 20 70 1wrr-queue cos-map 1 0 1wrr-queue cos-map 2 2 4wrr-queue cos-map 3 3 6 7wrr-queue cos-map 4 5!class-map match-all AutoQoS-VoIP-RTP-Trustmatch ip dscp 46class-map match-all AutoQoS-VoIP-Control-Trustmatch ip dscp 24 26!policy-map AutoQoS-Police-SoftPhoneclass AutoQoS-VoIP-RTP-Trustset ip dscp 46police 1000000 4096 exceed-action dropclass AutoQoS-VoIP-Control-Trustset ip dscp 24police 1000000 4096 exceed-action drop!mls qos map cos-dscp 0 8 16 26 32 46 48 56...interface FastEthernet0/3mls qos trust device cisco-phonemls qos trust cosauto qos voip cisco-phone!interface FastEthernet0/4service-policy input AutoQoS-Police-SoftPhoneauto qos voip cisco-softphone!These are examples of output from the show auto qos command when auto-QoS is disabled on the switch:
Switch> show auto qosAutoQoS not enabled on any interfaceThese are examples of output from the show auto qos interface interface-id command when auto-QoS is disabled on an interface:
Switch> show auto qos interface fastethernet0/1AutoQoS is disabledRelated Commands
show boot
Use the show boot privileged EXEC command to display the settings of the boot environment variables.
show boot [ | {begin | exclude | include} expression]
Syntax Description
Command Modes
Privileged EXEC
Command History
Usage Guidelines
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.
Note
Examples
This is an example of output from the show boot command. Table 2-8 describes each field in the output.
Switch# show bootBOOT path-list: flash:bootConfig file: flash:config.textPrivate Config file: flash:private-config.textEnable Break: noManual Boot: yesHELPER path-list:NVRAM/Config filebuffer size: 32768
Related Commands
Specifies the filename that the software uses to read and write a nonvolatile copy of the private configuration.
show class-map
Use the show class-map user EXEC command to display quality of service (QoS) class maps, which define the match criteria to classify traffic.
show class-map [class-map-name] [ | {begin | exclude | include} expression]
This command is available only if your switch is running the enhanced software image (EI).
Syntax Description
Command Modes
User EXEC
Command History
Usage Guidelines
If you do not specify a class-map-name, all class maps appear.
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.
Examples
This is an example of output from the show class-map test command:
Switch> show class-map testClass Map match-all test (id 2)Match access-group name testingaclThis is an example of output from the show class-map command:
Switch> show class-mapClass Map match-all wizard_1-1-1-2 (id 3)Match access-group name videowizard_1-1-1-2Class Map match-all test (id 2)Match access-group name testingaclClass Map match-any class-default (id 0)Match anyClass Map match-all class1 (id 5)Match access-group 103Class Map match-all classtest (id 4)Description: This is a test.Match access-group name testingaclRelated Commands
Creates a class map to be used for matching packets to the class whose name you specify.
Defines the match criteria to classify traffic.
show cluster
Use the show cluster privileged EXEC command to display the cluster status and a summary of the cluster to which the switch belongs. This command can be entered on command and member switches.
show cluster [ | {begin | exclude | include} expression]
Syntax Description
Command Modes
Privileged EXEC
Command History
Usage Guidelines
On a member switch, this command displays the identity of the command switch, the switch member number, and the state of its connectivity with the command switch.
On a command switch, this command displays the cluster name and the total number of members. It also shows the cluster status and time since the status changed. If redundancy is enabled, it displays the primary and secondary command-switch information.
If you enter this command on a switch that is not a cluster member, the error message Not a management cluster member appears.
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.
Examples
This is an example of output when this command is entered on the active command switch:
Switch# show clusterCommand switch for cluster "Switch1"Total number of members: 7Status: 1 members are unreachableTime since last status change: 0 days, 0 hours, 2 minutesRedundancy: EnabledStandby command switch: Member 1Standby Group: Switch1_standbyStandby Group Number: 110Heartbeat interval: 8Heartbeat hold-time: 80Extended discovery hop count: 3This is an example of output when this command is entered on a member switch:
Switch# show clusterMember switch for cluster "commander"Member number: 3Management IP address: 192.192.192.192Command switch mac address: 0000.0c07.ac14Heartbeat interval: 8Heartbeat hold-time: 80This is an example of output when this command is entered on a member switch that is configured as the standby command switch:
Switch# show clusterMember switch for cluster "commander"Member number: 3 (Standby command switch)Management IP address: 192.192.192.192Command switch mac address: 0000.0c07.ac14Heartbeat interval: 8Heartbeat hold-time: 80This is an example of output when this command is entered on the command switch that has lost connectivity from member 1:
Switch# show clusterCommand switch for cluster "Switch1"Total number of members: 7Status: 1 members are unreachableTime since last status change: 0 days, 0 hours, 5 minutesRedundancy: DisabledHeartbeat interval: 8Heartbeat hold-time: 80Extended discovery hop count: 3This is an example of output when this command is entered on a member switch that has lost connectivity with the command switch:
Switch# show clusterMember switch for cluster "commander"Member number: <UNKNOWN>Management IP address: 192.192.192.192Command switch mac address: 0000.0c07.ac14Heartbeat interval: 8Heartbeat hold-time: 80Related Commands
show cluster candidates
Use the show cluster candidates privileged EXEC command on the command switch to display a list of candidate switches.
show cluster candidates [detail | mac-address H.H.H.] [ | {begin | exclude | include} expression]
Syntax Description
Command Modes
Privileged EXEC
Command History
Usage Guidelines
You should only enter this command on a command switch.
If the switch is not a command switch, the command displays an empty line at the prompt.
The SN in the output means switch member number. If E is in the SN column, it means that the switch is discovered through extended discovery. If E does not appear in the SN column, it means that the switch member number is the upstream neighbor of the candidate switch. The hop count is the number of devices the candidate is from the command switch.
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.
Examples
This is an example of output from the show cluster candidates command:
Switch# show cluster candidates|---Upstream---|MAC Address Name Device Type PortIf FEC Hops SN PortIf FEC0030.85f5.8e80 3550-12T WS-C3550-12T Gi0/4 1 0 Fa0/10005.313c.5880 Switch2 WS-C3550-12T Gi0/1 2 E Gi0/50005.dcc8.01c0 2950-145 WS-C2950T-24 Fa0/1 3 E Gi0/20002.b922.7180 C2820 WS-C2820-24 Fa0/3 UpThis is an example of output from the show cluster candidates command that uses the MAC address of a member switch directly connected to the command switch:
Switch# show cluster candidates mac-address 00d0.7961.c4c0Device 'c2950-12' with mac address number 00d0.7961.c4c0Device type: cisco WS-C2950-12Upstream MAC address: 00d0.796d.2f00 (Cluster Member 0)Local port: Fa0/3 FEC number:Upstream port: Fa0/13 FEC Number:Hops from cluster edge: 1Hops from command device: 1This is an example of output from the show cluster candidates command that uses the MAC address of a member switch three hops from the cluster edge:
Switch# show cluster candidates mac-address 0010.7bb6.1cc0Device 'c2950-24' with mac address number 0010.7bb6.1cc0Device type: cisco WS-C2950-24Upstream MAC address: 0010.7bb6.1cd4Local port: Fa2/1 FEC number:Upstream port: Fa0/24 FEC Number:Hops from cluster edge: 3Hops from command device: -This is an example of output from the show cluster candidates detail command:
Switch# show cluster candidates detailDevice 'c2950-12' with mac address number 00d0.7961.c4c0Device type: cisco WS-C2950-12Upstream MAC address: 00d0.796d.2f00 (Cluster Member 1)Local port: Fa0/3 FEC number:Upstream port: Fa0/13 FEC Number:Hops from cluster edge: 1Hops from command device: 2Device '1900_Switch' with mac address number 00e0.1e7e.be80Device type: cisco 1900Upstream MAC address: 00d0.796d.2f00 (Cluster Member 2)Local port: 3 FEC number: 0Upstream port: Fa0/11 FEC Number:Hops from cluster edge: 1Hops from command device: 2Device 'c2924-XL' with mac address number 00e0.1e9f.7a00Device type: cisco WS-C2924-XLUpstream MAC address: 00d0.796d.2f00 (Cluster Member 3)Local port: Fa0/5 FEC number:Upstream port: Fa0/3 FEC Number:Hops from cluster edge: 1Hops from command device: 2Related Commands
Displays the cluster status and a summary of the cluster to which the switch belongs.
Displays information about the cluster members.
show cluster members
Use the show cluster members privileged EXEC command on the command switch to display information about the cluster members.
show cluster members [n | detail] [ | {begin | exclude | include} expression]
Syntax Description
Command Modes
Privileged EXEC
Command History
Usage Guidelines
You should only enter this command on a command switch.
If the cluster has no members, this command displays an empty line at the prompt.
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.
Examples
This is an example of output from the show cluster members command. The SN in the display means switch number.
Switch# show cluster members|---Upstream---|SN MAC Address Name PortIf FEC Hops SN PortIf FEC State0 0002.4b29.2e00 StLouis1 0 Up (Cmdr)1 0030.946c.d740 tal-switch-1 Fa0/13 1 0 Gi0/1 Up2 0002.b922.7180 nms-2820 10 0 2 1 Fa0/18 Up3 0002.4b29.4400 SanJuan2 Gi0/1 2 1 Fa0/11 Up4 0002.4b28.c480 GenieTest Gi0/2 2 1 Fa0/9 UpSwitch# show cluster members|---Upstream---|SN MAC Address Name PortIf FEC Hops SN PortIf FEC State0 0404.0400.0001 Switch 0 Up(Cmdr)1 0003.fd62.9240 b10-2940TT Fa0/1 1 0 Gi0/20 UpThis is an example of output from the show cluster members 3 command for cluster member 3:
Switch# show cluster members 3Device 'SanJuan2' with member number 3Device type: cisco WS-C3550-12TMAC address: 0002.4b29.4400Upstream MAC address: 0030.946c.d740 (Cluster member 1)Local port: Gi0/1 FEC number:Upstream port: Fa0/11 FEC Number:Hops from command device: 2This is an example of output from the show cluster members detail command:
Switch# show cluster members detailDevice 'StLouis1' with member number 0 (Command Switch)Device type: cisco WS-C3550-12TMAC address: 0002.4b29.2e00Upstream MAC address:Local port: FEC number:Upstream port: FEC Number:Hops from command device: 0Device 'tal-switch-14' with member number 1Device type: cisco WS-C3548-XLMAC address: 0030.946c.d740Upstream MAC address: 0002.4b29.2e00 (Cluster member 0)Local port: Fa0/13 FEC number:Upstream port: Gi0/1 FEC Number:Hops from command device: 1Device 'nms-2820' with member number 2Device type: cisco 2820MAC address: 0002.b922.7180Upstream MAC address: 0030.946c.d740 (Cluster member 1)Local port: 10 FEC number: 0Upstream port: Fa0/18 FEC Number:Hops from command device: 2Device 'SanJuan2' with member number 3Device type: cisco WS-C3550-12TMAC address: 0002.4b29.4400Upstream MAC address: 0030.946c.d740 (Cluster member 1)Local port: Gi0/1 FEC number:Upstream port: Fa0/11 FEC Number:Hops from command device: 2Device 'Test' with member number 4Device type: cisco SeaHorseMAC address: 0002.4b28.c480Upstream MAC address: 0030.946c.d740 (Cluster member 1)Local port: Gi0/2 FEC number:Upstream port: Fa0/9 FEC Number:Hops from command device: 2Device 'Palpatine' with member number 5Device type: cisco WS-C2924M-XLMAC address: 00b0.6404.f8c0Upstream MAC address: 0002.4b29.2e00 (Cluster member 0)Local port: Gi2/1 FEC number:Upstream port: Gi0/7 FEC Number:Hops from command device: 1Related Commands
Displays the cluster status and a summary of the cluster to which the switch belongs.
Displays a list of candidate switches.
show controllers ethernet-controller
Use the show controllers ethernet-controller privileged EXEC command without keywords to display per-interface send and receive statistics read from the hardware. Use this command with keywords to display the interface internal registers or to display the statistics read from Long-Reach Ethernet (LRE) and customer premises equipment (CPE) ports.
show controllers ethernet-controller interface-id [asic | cpe [port port-id] | phy 32] [ | {begin | exclude | include} expression]
Syntax Description
Command Modes
Privileged EXEC (only supported with the interface-id keywords in user EXEC mode)
Command History
12.1(6)EA2
This command was introduced.
12.1(11)YJ
The cpe and port port-id keywords were added.
12.1(19)EA1
The phy keyword was changed to phy 32.
Usage Guidelines
Use this command without keywords to display traffic statistics, particularly the RMON statistics for the interface. If this command is entered on a Catalyst 2950 LRE switch, the command output also shows the statistics for the LRE switch interfaces.
When you enter the asic or phy 32 keyword, the displayed information is primarily useful for Cisco technical support representatives troubleshooting the switch. When you enter the cpe keyword, the displayed information shows the traffic statistics for the connected CPE devices. The CPE Ethernet link on an LRE switch port is the connection between the Cisco LRE CPE and the remote Ethernet device (such as a PC) connected to it. It is not the link between the LRE switch port and the LRE CPE device.
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.
Examples
This is an example of output from the show controllers ethernet-controller command on a non-LRE switch. For this example, Table 2-9 describes the Transmit fields, Table 2-10 describes the Receive fields, and Table 2-11 describes the Transmit and Receive fields.
Switch# show controllers ethernet-controller fastethernet0/2Transmit Receive19555003 Bytes 23485398 Bytes222479 Frames 313530 Frames161490 Multicast frames 0 FCS errors256 Broadcast frames 313467 Multicast frames0 Pause frames 1 Broadcast frames0 Single defer frames 0 Control frames0 Multiple defer frames 0 Pause frames0 1 collision frames 0 Unknown opcode frames0 2-15 collisions 0 Alignment errors0 Late collisions 0 Length out of range0 Excessive collisions 0 Symbol error frames0 Total collisions 0 False carrier errors0 Control frames 0 Valid frames, too small0 VLAN discard frames 0 Valid frames, too large0 Too old frames 0 Invalid frames, too small0 Tagged frames 0 Invalid frames, too large0 Aborted Tx frames 0 Discarded framesTransmit and Receive384595 Minimum size frames131178 65 to 127 byte frames6 128 to 255 byte frames20229 256 to 511 byte frames1 512 to 1023 byte frames0 1024 to 1518 byte frames0 1519 to 1522 byte frames
Table 2-9 Transmit Field Descriptions
Bytes
The total number of bytes sent on an interface.
Frames
The total number of frames sent on an interface.
Multicast frames
The total number of frames sent to multicast addresses.
Broadcast frames
The total number of frames sent to broadcast addresses.
Pause frames
The number of pause frames sent on an interface.
Single defer frames
The number of frames for which the first transmission attempt on an interface is not successful. This value excludes frames in collisions.
Multiple defer frames
The number of frames that are not sent after the time exceeds 2*maximum-packet time.
1 collision frames
The number of frames that are successfully sent on an interface after one collision occurs.
2-15 collisions
The number of frames that are successfully sent on an interface after more than one collision occurs.
Late collisions
After a frame is sent, the number of times that a collision is detected on an interface later than 512 bit times.
Excessive collisions
The number of frames that could not be sent on an interface because more than 16 collisions occurred.
Total collisions
The total number of collisions on an interface.
Control frames
The number of control frames sent on an interface, such as STP1 BPDUs2 .
VLAN discard frames
The number of frames dropped on an interface because the CFI3 bit is set.
Too old frames
The number of frames dropped on the egress port because the packet aged out.
Tagged frames
The number of tagged frames sent on an interface.
Aborted Tx frames
The number of aborted transmission attempts on the interface.
1 STP = Spanning Tree Protocol
2 BPDU = bridge protocol data unit
3 CFI = Canonical Format Indicator
Table 2-10 Receive Field Descriptions
Bytes
The total amount of memory (in bytes) used by frames received on an interface, including the FCS1 value and the incorrectly formed frames. This value excludes the frame header bits.
Frames
The total number of frames received on an interface, including multicast frames, broadcast frames, and incorrectly formed frames.
FCS errors
The total number of frames received on an interface that have a valid length (in bytes) but do not have the correct FCS values.
Multicast frames
The total number of frames successfully received on the interface that are directed to multicast addresses.
Broadcast frames
The total number of frames successfully received on an interface that are directed to broadcast addresses.
Control frames
The number of control frames received on an interface, such as STP BPDUs.
Pause frames
The number of pause frames received on an interface.
Unknown opcode frames
The number of frames received with an unknown operation code.
Alignment errors
The total number of frames received on an interface that have alignment errors.
Length out of range
The number of frames received on an interface that have an out-of-range length.
Symbol error frames
The number of frames received on an interface that have symbol errors.
False carrier errors
The number of occurrences in which the interface detects a false carrier when frames are not sent or received.
Valid frames, too small
The number of frames received on an interface that are smaller than 64 bytes (or 68 bytes for VLAN-tagged frames) and have valid FCS values. The frame size includes the FCS bits but excludes the frame header bits.
Valid frames, too large
The number of frames received on an interface that are larger than the maximum allowed frame size.
Invalid frames, too small
The number of frames received that are smaller than 64 bytes (including the FCS bits and excluding the frame header) and that have either an FCS error or an alignment error.
Invalid frames, too large
The number of frames received that were larger than maximum allowed MTU2 size (including the FCS bits and excluding the frame header) and that have either an FCS error or an alignment error.
Note
Discarded frames
The number of frames discarded because of lack of receive buffer memory.
1 FCS = frame check sequence
2 MTU = maximum transmission unit
This is an example of output from the show controllers ethernet-controller command on an LRE switch. For this example, Table 2-9 describes the Transmit fields, Table 2-10 describes the Receive fields, Table 2-11 describes the Transmit and Receive fields, and Table 2-12 describes the LRE Enet Stats on Switch fields.
Switch# show controllers ethernet-controller longreachethernet0/4Transmit Receive64 Bytes 64 Bytes1 Frames 1 Frames0 Multicast frames 0 FCS errors0 Broadcast frames 0 Multicast frames0 Pause frames 0 Broadcast frames0 Single defer frames 0 Control frames0 Multiple defer frames 0 Pause frames0 1 collision frames 0 Unknown opcode frames0 2-15 collisions 0 Alignment errors0 Late collisions 0 Length out of range0 Excessive collisions 0 Symbol error frames0 Total collisions 0 False carrier errors0 Control frames 0 Valid frames, too small0 VLAN discard frames 0 Valid frames, too large0 Too old frames 0 Invalid frames, too small0 Tagged frames 0 Invalid frames, too large0 Aborted Tx frames 0 Discarded framesTransmit and Receive2 Minimum size frames0 65 to 127 byte frames0 128 to 255 byte frames0 256 to 511 byte frames0 512 to 1023 byte frames0 1024 to 1518 byte frames0 1519 to 1522 byte framesLRE Enet Stats on Switch:Transmit Receive0 Bytes 0 Bytes0 Frames 0 Frames0 Broadcast frames0 Pause frames 0 Pause frames0 1 collision frames 0 Alignment errors0 Multiple collisions 0 Collisions and Runts0 Late collisions 0 Oversize frames0 Excessive collisions 0 FCS errors0 Deferred frames0 Carrier sense errors
This is an example of output from the show controllers ethernet-controller longreachethernet0/4 cpe command. It shows the statistics of the LRE chipset and the all the LRE ports on the CPE. For this example, Table 2-13 describes the LRE Enet Stats on CPE fields, and Table 2-14 describes the CPE Fast Ethernet Port fields.
Switch# show controllers ethernet-controller longreachethernet0/4 cpeLRE Enet Stats on CPE:Transmit Receive0 Bytes 0 Bytes0 Frames 0 Frames0 Broadcast frames0 Pause frames 0 Pause frames0 1 collision frames 0 Alignment errors0 Multiple collisions 0 Collisions and Runts0 Late collisions 0 Oversize frames0 Excessive collisions 0 FCS errors0 Deferred frames0 Carrier sense errorsCPE Fast Ethernet Port: 1Transmit Receive0 Bytes 0 Bytes0 Good Bytes0 Unicast Frames 0 Unicast Frames0 Multicast Frames 0 Multicast Frames0 Broadcast Frames 0 Broadcast Frames0 Dropped Frames 0 Dropped Frames0 Pause Frames 0 Pause Frames0 Collision Frames 0 Alignment Errors0 One Collision Frames 0 Fragments0 Multiple Collisions 0 Undersize Frames0 Late Collisions 0 Oversize Frames0 Excess Collisions 0 FCS errors0 Frame Discard 0 Excess Size Discards0 Deferred Frames 0 Jabbers0 Source Address Chang0 Symbol Errors0 64 Byte Frames0 65-127 Byte Frames0 128-255 Byte Frames0 256-511 Byte Frames0 512-1023 Byte Frames0 1024-1522 Byte FrameThis is an example of output from the show controllers ethernet-controller longreachethernet0/4 cpe port 1 command. It shows the statistics for a specific LRE port on the CPE. For this example, Table 2-14 describes the CPE Fast Ethernet Port fields.
Switch# show controllers ethernet-controller longreachethernet0/4 cpe port 1CPE Fast Ethernet Port: 1Transmit Receive42308326 Bytes 8264733 Bytes8264733 Good Bytes193 Unicast Frames 68745 Unicast Frames511408 Multicast Frames 11469 Multicast Frames1886 Broadcast Frames 0 Broadcast Frames0 Dropped Frames 0 Dropped Frames0 Pause Frames 0 Pause Frames0 Collision Frames 0 Alignment Errors0 One Collision Frames 0 Fragments0 Multiple Collisions 0 Undersize Frames0 Late Collisions 0 Oversize Frames0 Excess Collisions 0 FCS errors0 Frame Discard 0 Excess Size Discards2 Deferred Frames 0 Jabbers1 Source Address Change0 Symbol Errors68745 64 Byte Frames0 65-127 Byte Frames0 128-255 Byte Frames11469 256-511 Byte Frames0 512-1023 Byte Frames0 1024-1522 Byte Frame
Related Commands
show controllers lre cpe
Use the show controllers lre cpe privileged EXEC command to display information about the Cisco Long-Reach Ethernet (LRE) customer premises equipment (CPE) devices connected to an LRE switch.
show controllers lre cpe {identity | mfg | protected | version}[interface-id] [ | {begin | exclude | include} expression]
This command is available only on Catalyst 2950 LRE switches.
Syntax Description
Command Modes
Privileged EXEC
Command History
Usage Guidelines
The show controllers lre cpe identity privileged EXEC command output shows the type of CPE device attached to each LRE interface. For all Cisco supported CPE devices, the status can be certified, non-certified, or NA:
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•
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Use the show controllers lre cpe identity privileged EXEC command without specifying an LRE switch port to display the model numbers and status of all connected CPE devices.
Use the show controllers lre cpe mfg privileged EXEC command output to display fields specific to each CPE device unit. The software uses the model number field to identify the kind of CPE device attached to an LRE interface. The System Serial Number is also unique to each CPE device unit.
Use the show controllers lre cpe protected privileged EXEC command without specifying an LRE interface to display the protected port setting for all CPE ports. The Cisco 575 LRE CPE or Cisco 576 LRE 997 CPE devices display a protected field output of NA.
Use the show controllers lre cpe version privileged EXEC command without specifying an LRE switch port to display the version numbers of all CPE interfaces.
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.
Examples
This is an example of output from the show controllers lre cpe identity command for the Cisco 575 LRE and Cisco 585 LRE CPE devices:
Switch# show controllers lre cpe identityPort CPE Model Status Family------ ------------ --------------- ------Lo0/1 CISCO585-LRE CERTIFIED CISCO585-LRELo0/2 CISCO585-LRE CERTIFIED CISCO585-LRELo0/3 CISCO585-LRE CERTIFIED CISCO585-LRELo0/4 NA NA NALo0/5 NA NA NALo0/6 Cisco575-LRE CERTIFIED CISCO575-LRELo0/7 NA NA NALo0/8 Cisco575-LRE CERTIFIED CISCO575-LRELo0/9 NA NA NALo0/10 NA NA NALo0/11 CISCO585-LRE CERTIFIED CISCO585-LRELo0/12 CISCO585-LRE CERTIFIED CISCO585-LRELo0/13 CISCO585-LRE CERTIFIED CISCO585-LRELo0/14 NON-CERTIFIED UNSUPPORTED-MAC-MODE<output truncated>This is an example of output from the show controllers lre cpe mfg command that shows the manufacturing information for the Cisco 575 LRE and Cisco 585 CPE devices:
Switch# show controllers lre cpe mfgCPE Manufacturer Information:Lo0/1Assembly Revision Number:Model Number :CISCO585-LREModel Revision Number :A0Board Assembly Number :Board Serial Number :System Serial Number :ACT0613004ELo0/2Assembly Revision Number:Model Number :CISCO585-LREModel Revision Number :A0Board Assembly Number :Board Serial Number :System Serial Number :ACT0613005B<output truncated>This is an example of output from the show controllers lre cpe protected command that shows the CPE protected-port information for an LRE interface:
Switch# show controllers lre cpe protected longreachethernet0/9Interface Port Protected--------- ---- ---------Lo0/9 1 trueLo0/9 2 trueLo0/9 3 trueLo0/9 4 trueThis is an example of output from the show controllers lre cpe protected command that shows the CPE protected-port information for all LRE interfaces:
Switch# show controllers lre cpe protectedInterface Port Protected--------- ---- ---------Lo0/1 1 NALo0/2 1 NALo0/3 1 NALo0/4 1 NALo0/5 1 NALo0/6 1 NALo0/7 1 NALo0/8 1 falseLo0/8 2 false<output truncated>This is an example of output from the show controllers lre cpe version command:
Switch# show controllers lre cpe version longreachethernet0/5Interface Hw Sw Patch Boot App--------- --- --- ------ ----- -----Lo0/5 52 B4 51 1.02 1.02Related Commands
show controllers lre actual
Use the show controllers lre actual privileged EXEC command to display the actual values of the Long-Reach Ethernet (LRE) link on a specific LRE switch port.
show controllers lre interface-id actual {dsrserrs | link | rxpower | snr | txpower | usrserrs}
[ | {begin | exclude | include} expression]This command is available only on Catalyst 2950 LRE switches.
Syntax Description
Command Modes
Privileged EXEC
Command History
Usage Guidelines
You can use the SNR and Reed-Solomon error information to measure the quality of the LRE link. The SNR is the amount of increased received signal-power (in decibels) relative to the noise-power level that the switch can tolerate without disconnecting from the CPE device. The higher the ratio, the more resilient is the link.
The Reed-Solomon errors show the number of errors detected and corrected in the data being received on and sent from the switch LRE ports. Reed-Solomon errors are the result of noise exceeding the noise margin. For short bursts of noise (such as motor power on or power surges), the interleave feature prevents the loss of Ethernet data packets. Then the number of Reed-Solomon errors exceeds the number of Ethernet CRC errors.
The remote transmit power-rates from the connected CPE devices might be different from each other, depending on how long the cable is between the switch and the CPE device. A longer cable typically causes the CPE device to send a higher signal to overcome the loss effects of distance.
The local receive-power actually displays the switch's adjustment to the incoming power level. These numbers might be different from LRE port to LRE port, as the length of the cables to the CPE devices might be different.
If the SNR is too low for the environment but the link still establishes, the Reed-Solomon error rate is high, and there might be link instability (as shown by the number of Fail events counted). If the network is being used for data only, a high incidence of Ethernet Frame Check Sequence (FCS) errors or micro-interruptions might be tolerable.
For more information about what can affect the LRE link and for the minimum required SNR ratios, see the "LRE Links and LRE Profiles" section in the "Configuring LRE" chapter of the switch software configuration guide for this release.
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.
Examples
This is an example of output from the show controllers lre interface-id actual dsrserrs command on an LRE port:
Switch# show controllers lre longreachethernet0/2 actual dsrserrs0Switch#This is an example of output from the show controllers lre interface-id actual link command on an LRE port:
Switch# show controllers lre longreachethernet0/2 actual linkUPSwitch#This is an example of output from the show controllers lre interface-id actual rxpower command on an LRE port:
Switch# show controllers lre longreachethernet0/2 actual rxpower26.0Switch#This is an example of output from the show controllers lre interface-id actual snr command on an LRE port:
Switch# show controllers lre longreachethernet0/2 actual snr27Switch#This is an example of output from the show controllers lre interface-id actual txpower command on an LRE port:
Switch# show controllers lre longreachethernet0/2 actual txpower-89.7Switch#This is an example of output from the show controllers lre interface-id actual usrserrs command on an LRE port:
Switch# show controllers lre longreachethernet0/2 actual usrserrs0Switch#This is an example of output from the show controllers lre interface-id actual link command on an LRE port:
Switch# show controllers lre longreachethernet0/1 actual linkDOWNSwitch#Related Commands
Displays the administrative settings of the LRE link on a specific switch LRE port.
show controllers lre admin
Use the show controllers lre interface-id admin privileged EXEC command to display the administrative settings of the Long-Reach Ethernet (LRE) link for a specific switch LRE port.
show controllers lre interface-id admin {dsrate | usrate}[ |{begin | exclude | include} expression]
This command is available only on Catalyst 2950 LRE switches.
Syntax Description
Command Modes
Privileged EXEC
Command History
Usage Guidelines
This command displays the profile settings of an LRE switch port, even though they might not be active if a global profile is configured on the switch.
The upstream and downstream rates are defined by the profile on the switch LRE port. To change these rates, assign a different profile to the switch LRE port. For information about the LRE profiles, see the switch software configuration guide for this release.
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.
Examples
This is an example of output from the show controllers lre interface-id admin dsrate and show controllers lre interface-id admin usrate commands:
Switch# show controllers lre longreachethernet0/1 admin usrate18.750Switch# show controllers lre longreachethernet0/1 admin dsrate16.667Switch# show controllers lre longreachethernet0/2 admin usrate12.500Switch# show controllers lre longreachethernet0/2 admin dsrate12.500Related Commands
show controllers lre cpe identity
Displays the actual values of the LRE link on a specific switch LRE port.
Assigns a profile to all switch LRE ports.
Assigns a profile to a specific switch LRE port.
show controllers lre link monitor
Use the show controllers lre link monitor privileged EXEC command to display Long-Reach Ethernet (LRE) link monitor information.
show controllers lre monitor {errors | parameters | statistics} {local [interface-id] | remote [interface-id]} [ | {begin | exclude | include} expression]
This command is available only on Catalyst 2950 LRE switches.
Syntax Description
Command Modes
Privileged EXEC
Command History
Usage Guidelines
The link monitor process collects error information at 1-minute intervals for 15 minutes. After 15 minutes, the data is analyzed and stored before starting a new collection sequence. Up to 2 hours of link monitor data can be shown.
Local monitoring collects data from the LRE switch. Remote monitoring collects data from attached CPE device.
The Time heading in the show controllers lre link monitor errors command output shows the timestamp for the last collection sequence. The RS error count shows the cumulative error count from the last reading. Alignment errors, frame check sequence (FCS) errors, receive errors, and oversize errors are the Ethernet statistics collected either at the switch or at the CPE device.
The Time heading in the show controllers lre link monitor parameters command output shows the timestamp for the last collection sequence. The signal-to-noise (SNR) error counter, shown under the SNR Err heading, increments when the SNR value read from the chipset falls below the theoretical SNR added to the threshold.
The Time heading in the show controllers lre link monitor statistics command output shows the timestamp for the last collection sequence. The RS error count shows the cumulative error count from the last reading. This count is cleared only when the interface is shut down or when the clear controllers lre link monitor privileged EXEC command is entered. The RS error alarm shows the number of 1 minute intervals that had RS errors above the configured threshold.
Use the show controllers lre monitor {errors | parameters | statistics} privileged EXEC command without specifying a switch interface to display data for all interfaces.
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.
Examples
This is an example of output that shows how to display LRE RS and Ethernet errors for the LRE switch on an LRE port:
Switch# show controllers lre link monitor errors local longreachethernet0/1LongReachEthernet0/1:LRE Link Health Monitor Error counts :Time RS Errors Align Errs FCS Errs Rcv Errs Oversz Errs-------- ---------- ---------- ---------- ---------- -----------14:42:28 41216 0 0 0 014:30:28 40960 0 0 0 014:15:28 40960 0 0 0 014:00:29 40704 0 0 0 013:45:28 40704 0 0 0 013:30:29 40448 0 0 0 013:15:29 40448 0 0 0 013:00:28 40448 0 0 0 0This is an example of output that shows Reed-Solomon and Ethernet errors for a CPE device connected to an LRE port:
Switch# show controllers lre link monitor errors remote longreachethernet0/1LongReachEthernet0/1:LRE Link Health Monitor Error counts :Time RS Errors Align Errs FCS Errs Rcv Errs Oversz Errs-------- ---------- ---------- ---------- ---------- -----------14:42:28 6400 45835 0 0 014:30:28 6400 45835 0 0 014:15:28 6400 45835 0 0 014:00:29 6400 45835 0 0 013:45:28 6144 45835 0 0 013:30:29 6144 45835 0 0 013:15:29 6144 45835 0 0 013:00:28 6144 45835 0 0 0This is an example that shows how to display all LRE link monitor parameters for the attached CPE device:
Switch# show controllers lre link monitor parameters remoteLongReachEthernet0/1: LRE Link Health Monitor Parameters :SNR Tx Power SwAGCGainTime Samples Min Max Err Min Max Min Max-------- ------- --- --- --- ------- ------- ------- -------00:32:30 2 0 0 0 - 85.6 - 85.6 - 2.0 - 2.000:30:30 15 0 0 0 - 85.6 - 85.6 - 2.0 - 2.000:15:30 15 0 0 0 - 85.6 - 85.6 - 2.0 - 2.000:00:30 15 0 0 0 - 85.6 - 85.6 - 2.0 - 2.023:45:30 15 0 0 0 - 85.6 - 85.6 - 2.0 - 2.023:30:30 15 0 0 0 - 85.6 - 85.6 - 2.0 - 2.023:15:30 15 0 0 0 - 85.6 - 85.6 - 2.0 - 2.0<output truncated>This is an example that shows how to display all LRE link monitor statistics for the LRE controller:
Switch# show controllers lre link monitor statistics localLongReachEthernet0/1: LRE Link Health Monitor Stats :RS Errors Link Fail FreezeTime Samples Count Alarm Count Count-------- ------- --------------- ---------- ----------06:58:30 13 0 0 2 306:45:30 15 0 0 2 306:30:30 15 0 0 2 306:15:30 15 0 0 2 306:00:30 15 0 0 2 305:45:30 15 0 0 2 305:30:30 15 0 0 2 305:15:30 15 0 0 2 3Related Commands
show controllers lre log
Use the show controllers lre log user EXEC command without keywords to display the history of link, configuration, and timer events for a specific Long-Reach Ethernet (LRE) port or for all switch LRE ports. Use this command with keywords to display information about the LRE event log level.
show controllers lre log [level] [interface-id] [ | {begin | exclude | include} expression]
This command is available only on Catalyst 2950 LRE switches.
Syntax Description
Command Modes
User EXEC
Command History
Usage Guidelines
Use the show controllers lre log command without specifying a switch LRE port to display the events for all LRE switch ports. The time-stamped and sequentially tagged log entries can be helpful in confirming LRE link drops and configuration changes.
Use the show controllers lre log level command without specifying an LRE switch port to list the log level for each LRE port on the switch.
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.
Examples
This is an example of output from the show controllers lre log command that shows events on an LRE interface:
Switch> show controllers lre log longreachethernet0/5LongReachEthernet0/5: Events Log: ==================================1d00h: [0]: State RESTART: Got event:Reset1d00h: [1]: State MODEZERO_APPLIED: Got event:Link Up1d00h: [2]: State MODEZERO_APPLIED: Got event:Link Down1d00h: [3]: State PROFILE_APPLIED: Got event:Link Up1d00h: [4]: State PROFILE_LINKUP: Got event:Link Down1d00h: [5]: State PROFILE_LINKUP: Got event:Link Up1d00h: [6]: State PROFILE_LINKUP: Got event:Link Down1d00h: [7]: State PROFILE_LINKUP: Got event:Link UpThis is an example of output from the show controllers lre log level command that displays the log level on an LRE port:
Switch> show controllers lre log level longreachethernet0/1Port Log Level================Lo0/1 Logging disabledRelated Commands
show controllers lre profile
Use the show controllers lre profile privileged EXEC command to display information about the Long-Reach Ethernet (LRE) profiles and sequences available on the switch.
show controllers lre profile {details | names} [ | {begin | exclude | include} expression]
This command is available only on Catalyst 2950 LRE switches.
Syntax Description
Command Modes
Privileged EXEC
Command History
Usage Guidelines
Use the show controllers lre profile details privileged EXEC command to see the profiles and sequences running on each port. This command also shows global profiles and sequences.
For information about LRE profiles supported on your switch and about LRE links, see the "LRE Profiles" section in the "Configuring LRE" chapter of the switch software configuration guide for this release.
Note
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.
Examples
This is an example of output from the show controllers lre profile details command on the Catalyst 2950ST-8 LRE and 2950ST-24 LRE switches:
Switch# show controllers lre profile detailsGlobal Profile:LRE-10-3Interface Configured Profile Running Profile Type--------- ------------------ --------------- ------Lo0/1 LRE-10-5 LRE-15 Port SequenceLo0/2 LRE-10-3 LRE-10-3 Global ProfileLo0/3 LRE-10-3 LRE-15 Port SequenceLo0/4 LRE-10-3 LRE-10-3 Global ProfileLo0/5 LRE-10-3 LRE-10-3 Global ProfileLo0/6 LRE-10-3 LRE-10-3 Global ProfileLo0/7 LRE-10-3 LRE-15 Global ProfileLo0/8 LRE-10-3 LRE-10-3 Global ProfileLo0/9 LRE-10-3 LRE-10-3 Global ProfileLo0/10 LRE-10-3 LRE-10-3 Global ProfileLo0/11 LRE-10-3 LRE-10-3 Global ProfileLo0/12 LRE-10-3 LRE-10-3 Global Profile<output truncated>This is an example of output from the show controllers lre profile details command on the Catalyst 2950ST-24 LRE 997 switch:
Switch# show controllers lre profile detailsGlobal Profile:LRE-6Interface Configured Profile Running Profile Type--------- ------------------ --------------- ------Lo0/1 LRE-6 LRE-6 Global ProfileLo0/2 LRE-6 LRE-6 Global ProfileLo0/3 LRE-6 LRE-6 Global ProfileLo0/4 LRE-6 LRE-6 Global ProfileLo0/5 LRE-6 LRE-6 Global ProfileLo0/6 LRE-6 LRE-6 Global ProfileLo0/7 LRE-6 LRE-6 Global ProfileLo0/8 LRE-6 LRE-6 Global ProfileLo0/9 LRE-6 LRE-6 Global ProfileLo0/10 LRE-6 LRE-6 Global ProfileLo0/11 LRE-6 LRE-6 Global ProfileLo0/12 LRE-6 LRE-6 Global Profile<output truncated>This is an example of output from the show controllers lre profile names command on the Catalyst 2950ST-8 LRE and 2950ST-24 LRE switches:
Switch# show controllers lre profile namesProfile Name Type Downstream UpstreamRate(Mbps) Rate(Mbps)------------ ----------------- ---------- ----------LRE-15 System-Configured 16.667 18.750LRE-10 System-Configured 12.500 12.500LRE-5 System-Configured 6.250 6.250LRE-998-15-4 System-Configured 16.667 4.688LRE-997-10-4 System-Configured 12.500 4.688LRE-15LL System-Configured 16.667 18.750LRE-10LL System-Configured 12.500 12.500LRE-5LL System-Configured 6.250 6.250LRE-10-5 System-Configured 12.500 6.250LRE-10-3 System-Configured 12.500 3.125LRE-10-1 System-Configured 12.500 1.563LRE-8 System-Configured 9.375 9.375LRE-7 System-Configured 8.333 8.333LRE-15-5 System-Configured 16.667 6.250LRE-15-3 System-Configured 16.667 3.125LRE-15-1 System-Configured 16.667 1.563LRE-4 System-Configured 4.167 4.167LRE-3 System-Configured 3.125 3.125LRE-2 System-Configured 2.083 2.083LRE-4-1LL System-Configured 4.167 1.563This is an example of output from the show controllers lre profile names command on the Catalyst 2950ST-24 LRE 997 switch:
Switch# show controllers lre profile namesProfile Name Type Downstream UpstreamRate(Mbps) Rate(Mbps)------------ ----------------- ---------- ----------LRE-12-9 System-Configured 12.500 9.375LRE-12-3 System-Configured 12.500 3.125LRE-9 System-Configured 9.375 9.375LRE-9-6 System-Configured 9.375 6.250LRE-9-4 System-Configured 9.375 4.688LRE-9-3 System-Configured 9.375 3.125LRE-6 System-Configured 6.250 6.250LRE-6-4 System-Configured 6.250 4.688LRE-6-3 System-Configured 6.250 3.125LRE-4 System-Configured 4.688 4.688Related Commands
show controllers lre sequence
Use the show controllers lre sequence privileged EXEC command to display the list of sequences, the profiles that are configured in that sequence, and the downstream and upstream rates of the corresponding profiles.
show controllers lre sequence [ | {begin | exclude | include} expression]
This command is available only on Catalyst 2950 LRE switches.
Syntax Description
Command Modes
Privileged EXEC
Command History
Usage Guidelines
Use the show controllers lre sequence command to display the list of sequences supported in the switch. This command displays the system-defined and user-defined sequences.
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.
Examples
This is an example of output from the show controllers lre sequence command on the Catalyst 2950ST-8 LRE and 2950ST-24 LRE switches:
Switch# show controllers lre sequenceGlobal Sequence:LRE-SEQ-COMPLETE-REACHSequence:LRE-SEQ-COMPLETE-REACH Type:System-ConfiguredProfile Name Downstream UpstreamRate(Mbps) Rate(Mbps)-------------- ---------- ----------LRE-15 16.667 18.750LRE-10 12.500 12.500LRE-15-5 16.667 6.250LRE-10-5 12.500 6.250LRE-8 9.375 9.375LRE-7 8.333 8.333LRE-15-3 16.667 3.125LRE-10-3 12.500 3.125LRE-5 6.250 6.250LRE-15-1 16.667 1.563LRE-10-1 12.500 1.563LRE-4 4.167 4.167LRE-3 3.125 3.125LRE-2 2.083 2.083LRE-4-1 4.167 1.563Sequence:LRE-SEQ-DOWNSTREAM Type:System-ConfiguredProfile Name Downstream UpstreamRate(Mbps) Rate(Mbps)-------------- ---------- ----------LRE-15 16.667 18.750LRE-15-5 16.667 6.250LRE-15-3 16.667 3.125LRE-15-1 16.667 1.563LRE-10 12.500 12.500<output truncated>This is an example of output from the show controllers lre sequence command on the Catalyst 2950ST-24 LRE 997 switch:
Switch# show controllers lre sequenceGlobal Sequence:N/ASequence:LRE-SEQ-COMPLETE-REACH Type:System-ConfiguredProfile Name Downstream UpstreamRate(Mbps) Rate(Mbps)-------------- ---------- ----------LRE-12-9 12.500 9.375LRE-12-3 12.500 3.125LRE-9 9.375 9.375LRE-9-6 9.375 6.250LRE-9-4 9.375 4.688LRE-6 6.250 6.250LRE-6-4 6.250 4.688LRE-9-3 9.375 3.125LRE-4 4.688 4.688LRE-6-3 6.250 3.125LRE-4-3 4.688 3.125Sequence:LRE-SEQ-DOWNSTREAM Type:System-ConfiguredProfile Name Downstream UpstreamRate(Mbps) Rate(Mbps)-------------- ---------- ----------LRE-12-9 12.500 9.375LRE-12-3 12.500 3.125LRE-9 9.375 9.375LRE-9-6 9.375 6.250LRE-9-4 9.375 4.688<output truncated>Related Commands
Assigns a rate selection sequence to the entire switch.
Defines a user-defined sequence.
show controllers lre status
Use the show controllers lre status privileged EXEC command to display the Long-Reach Ethernet (LRE) link statistics and profile information on a switch LRE port, including link state, link duration, profile name, and data rates.
show controllers lre status {cpe | interleave | link | profile | psd | sequence [detail]} [interface-id]
[ | {begin | exclude | include} expression]This command is available only on Catalyst 2950 LRE switches.
Syntax Description
Command Modes
Privileged EXEC
Command History
12.1(11)YJ
This command was introduced.
12.1(11)YJ4
The interleave keyword was added.
12.1(14)EA1
The cpe keyword was added.
Usage Guidelines
Use the show controllers lre status privileged EXEC command to display the status of all switch LRE ports.
Use the signal-to-noise ratio (SNR) and Reed-Solomon error information to measure the quality of the LRE link. The SNR represents the amount of increased received signal power (in decibels) relative to the noise power-level that the switch can tolerate without disconnecting from the CPE device. The higher the ratio, the more resilient is the link.
The Reed-Solomon errors show the number of errors detected and corrected in the data being received on and sent from the switch LRE ports. Reed-Solomon errors are the result of noise exceeding the noise margin. For short bursts of noise (such as motor power on or power surges), the interleaver prevents the loss of Ethernet data packets. The number of Reed-Solomon errors then exceeds the number of Ethernet CRC errors.
Note
The remote transmit power levels from the connected CPE devices might be different from each other, depending on how long the cable is between the switch and the CPE device. A longer cable typically causes the CPE device to send a higher signal to overcome the loss effects of distance.
The local receive-power rates actually displays the switch's adjustment to the incoming power level. These numbers might be different from LRE port to LRE port, as the length of the cables to the CPE devices might be different.
The interleaver columns display the interleaver block size for both directions of data. A higher interleaver setting is less susceptible to certain kinds of impairments but can introduce a very small amount of delay in the data path.
The PMD-S column refers to physical media dependent status and is provided as diagnostic information.
For more information about what can affect the LRE link and for the minimum required SNR ratios, see the "LRE Links and LRE Profiles" section in the "Configuring LRE" chapter of the switch software configuration guide for this release.
The sequence and sequence detail keywords display these status codes of profiles and sequences during rate selection:
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•
You can adjust the noise level during convergence by using the margin interface configuration command.
Use the show controllers lre status cpe [interface-id] privileged EXEC command to display information about a specific CPE port or all the CPE ports.
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.
Examples
This is an example of output that shows link information for an LRE interface:
Switch# show controller lre status link longreachethernet0/2Port Link SNR RS Errs CPE-Tx Sw-AGC-Gain Interleaver PMD-S(dB) (dBm/Hz) (dB) Rx-Bsz Tx-Bsz------ ---- ---- ----------- -------- ----------- ------------- -----Lo0/2 UP 41 4829 - 57.7 - 7.6 16 16 0x04This is an example of output from the show controllers lre status profile command:
Switch# show controllers lre status profilePort Link Uptime Profile DSRate USRate Fail------ ---- -------- ------------------- ------ ------ ----Lo0/1 UP 2d23h LRE-10 12.500 12.500 0Lo0/2 UP 2d23h LRE-10 4.167 1.563 0Lo0/3 UP 2d23h LRE-10 4.167 1.563 0Lo0/4 UP 2d23h LRE-10 4.167 1.563 0Lo0/5 DOWN 00:00:00 LRE-10 0.000 0.000 0Lo0/6 UP 2d23h LRE-10 4.167 1.563 0Lo0/7 UP 2d23h LRE-10 4.167 1.563 0Lo0/8 UP 2d23h LRE-10 4.167 1.563 0Lo0/9 UP 2d23h LRE-10 4.167 1.563 0Lo0/10 DOWN 00:00:00 LRE-10 0.000 0.000 0Lo0/11 DOWN 00:00:00 LRE-10 0.000 0.000 0Lo0/12 DOWN 00:00:00 LRE-10 0.000 0.000 0Lo0/13 UP 2d23h LRE-10 12.500 12.500 0Lo0/14 DOWN 00:00:00 LRE-10 0.000 0.000 0Lo0/15 UP 2d23h LRE-10 4.167 1.563 0Lo0/16 DOWN 00:00:00 LRE-10 0.000 0.000 0Lo0/17 DOWN 00:00:00 LRE-10 0.000 0.000 0Lo0/18 DOWN 00:00:00 LRE-10 0.000 0.000 0Lo0/19 DOWN 00:00:00 LRE-10 0.000 0.000 0Lo0/20 DOWN 00:00:00 LRE-10 0.000 0.000 0Lo0/21 UP 2d23h LRE-10 4.167 1.563 0Lo0/22 DOWN 00:00:00 LRE-10 0.000 0.000 0Lo0/23 DOWN 00:00:00 LRE-10 0.000 0.000 0Lo0/24 DOWN 00:00:00 LRE-10 0.000 0.000 0This is an example of output from the show controllers lre status psd command:
Switch# show controllers lre status psd------- Switch ------------ ----------- CPE -----------Port Link SNR RSErr TxPwr AGCgain SNR RSErr TxPwr AGCgain------ ---- --- ---------- ------ ------- --- ---------- ------ -------Lo0/1 UP 32 0 - 6.13 13.0 43 0 - 85.6 - 2.0Lo0/2 UP 32 0 - 6.13 15.1 42 0 - 85.9 - 2.0Lo0/3 UP 32 0 - 6.13 13.5 42 0 - 85.6 - 2.0Lo0/4 DOWN 10 0 - 5.85 63.9 0 0 0.0 0.0Lo0/5 DOWN 10 0 - 5.85 58.9 0 0 0.0 0.0Lo0/6 UP 33 0 - 6.13 15.1 42 0 - 85.9 - 2.0Lo0/7 DOWN 10 0 - 5.85 54.2 0 0 0.0 0.0Lo0/8 UP 33 0 - 6.13 14.6 42 0 - 85.9 - 2.5Lo0/9 DOWN 10 0 - 5.85 52.9 0 0 0.0 0.0Lo0/10 DOWN 10 0 - 5.85 61.5 0 0 0.0 0.0Lo0/11 UP 33 0 - 6.13 15.1 42 0 - 85.9 - 1.6Lo0/12 UP 33 0 - 6.13 15.1 42 0 - 85.9 - 2.5Lo0/13 UP 33 0 - 6.13 15.1 42 0 - 85.9 - 2.5Lo0/14 DOWN 10 268305 - 5.85 57.5 0 0 0.0 0.0Lo0/15 DOWN 10 0 - 5.85 50.7 0 0 0.0 0.0Lo0/16 UP 35 38 - 5.85 15.1 41 1238 - 85.9 - 6.4Lo0/17 DOWN 10 767128 - 5.85 61.8 0 0 0.0 0.0Lo0/18 DOWN 10 0 - 5.85 54.2 0 0 0.0 0.0Lo0/19 DOWN 10 0 - 5.85 51.5 0 0 0.0 0.0Lo0/20 DOWN 10 0 - 5.85 54.7 0 0 0.0 0.0Lo0/21 DOWN 10 0 - 5.85 67.8 0 0 0.0 0.0Lo0/22 DOWN 10 0 - 5.85 50.7 0 0 0.0 0.0Lo0/23 DOWN 10 0 - 5.85 66.5 0 0 0.0 0.0Lo0/24 DOWN 10 0 - 5.85 53.6 0 0 0.0 0.0This is an example of output from the show controllers lre status sequence command:
Switch# show controllers lre status sequencePort Sequence Status Profile----- ----------------------- -------------- ---------------Lo0/1 LRE-SEQ-DOWNSTREAM Converged LRE-15Lo0/2 N/A N/A N/ALo0/3 LRE-SEQ-SYM Converged LRE-15This is an example of output from the show controllers lre status interleave command:
Switch# show controllers lre status interleave longreachethernet0/2Port Link Profile Line Rate Block Size Delay(mSec)DS US DS US DS US------ ---- ---------------- -------------- ----------- -------------Lo0/2 UP LRE-6 6.250 6.250 16 16 20.316 20.316This is an example of output using the details keyword to obtain further information about the sequence:
Switch# show controllers lre status sequence detailLo0/1 :Sequence:LRE-SEQ-DOWNSTREAM Status:Converged Attempts:1Profile:LRE-15 Convergence Time: 00:01:54Rate-Selection:Enabled Locking:Not-ConfiguredDownstream Margin:2 Upstream Margin:0Lo0/2 :Sequence:N/A Status:N/A Attempts:0Profile:N/A Convergence Time: 00:00:00Rate-Selection:Disabled Locking:Not-ConfiguredDownstream Margin:0 Upstream Margin:0<output truncated>This is an example of output from the show controllers lre status cpe command:
Switch# show controllers lre status cpeLo0/1 : CPE-TYPE:Cisco575-LREPort Status Speed Duplex Protected---- ------------ ----- ------ ---------1 notconnected NA NA falseLo0/2 : CPE-TYPE:NAPort Status Speed Duplex Protected---- ------------ ----- ------ ---------1 NA NA NA NALo0/3 : CPE-TYPE:CISCO585-LREPort Status Speed Duplex Protected---- ------------ ----- ------ ---------1 notconnected auto NA false2 notconnected auto NA true3 notconnected auto NA false4 notconnected auto NA false5 connected 100 half falseRelated Commands
show controllers lre version
Use the show controllers lre version privileged EXEC command to display the version numbers of the various components (hardware, firmware, and patch software) that make up the Long-Reach Ethernet (LRE) switch interface.
show controllers lre version [interface-id] [ | {begin | exclude | include} expression]
This command is available only on Catalyst 2950 LRE switches.
Syntax Description
Command Modes
Privileged EXEC
Command History
Usage Guidelines
Use the show controllers lre version command without specifying a switch LRE port to display the version numbers of all switch LRE interfaces.
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.
Examples
This is an example of output that shows the version information for an LRE interface:
Switch# show controllers lre version longreachethernet0/2Interface Hw Sw Patch-------- --- --- -----Lo0/2 32 B4 50Related Commands
show controllers utilization
Use the show controllers utilization user EXEC command to display bandwidth utilization on the switch or specific ports.
show controllers [interface-id] utilization [ | {begin | exclude | include} expression]
Syntax Description
Command Modes
User EXEC
Command History
Usage Guidelines
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.
Examples
This is an example of output from the show controllers utilization command.
Switch> show controllers utilizationPort Receive Utilization Transmit UtilizationFa0/1 0 0Fa0/2 0 0<output truncated>Total Ports : 12Switch Receive Bandwidth Percentage Utilization : 0Switch Transmit Bandwidth Percentage Utilization : 0Switch Fabric Percentage Utilization : 0This is an example of output from the show controllers utilization command on a specific port:
Switch> show controllers fastethernet0/1 utilizationReceive Bandwidth Percentage Utilization : 0Transmit Bandwidth Percentage Utilization : 0
Related Commands
Displays the interface internal registers or displays the statistics read from Long-Reach Ethernet (LRE) and customer premises equipment (CPE) ports.
show dot1x
Use the show dot1x privileged EXEC command to display IEEE 802.1x statistics, administrative status, and operational status for the switch or for the specified interface.
show dot1x [all] | [interface interface-id] | [statistics [interface interface-id]] [ | {begin | exclude | include} expression]
Syntax Description
Command Modes
Privileged EXEC
Command History
Usage Guidelines
If you do not specify an interface, global parameters and a summary appear. If you specify an interface, details for that interface appear.
If you specify the statistics keyword without the interface interface-id option, statistics appear for all interfaces. If you specify the statistics keyword with the interface interface-id option, statistics appear for the specified interface.
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.
Examples
These are examples of output from the show dot1x and the show dot1x all privileged EXEC commands:
Switch# show dot1xSysauthcontrol = EnabledSupplicant Allowed In Guest Vlan = DisabledDot1x Protocol Version = 1Dot1x Oper Controlled Directions = BothDot1x Admin Controlled Directions = BothSwitch# show dot1x allDot1x Info for interface FastEthernet 0/3----------------------------------------------------Supplicant MAC 00d0.b71b.35deAuthSM State = CONNECTINGBendSM State = IDLEPortStatus = UNAUTHORIZEDMaxReq = 2HostMode = SinglePort Control = AutoQuietPeriod = 60 SecondsRe-authentication = DisabledReAuthPeriod = 3600 SecondsServerTimeout = 30 SecondsSuppTimeout = 30 SecondsTxPeriod = 30 SecondsGuest-Vlan = 0Dot1x Info for interface FastEthernet 0/7----------------------------------------------------PortStatus = UNAUTHORIZEDMaxReq = 2HostMode = MultiPort Control = AutoQuietPeriod = 60 SecondsRe-authentication = DisabledReAuthPeriod = 3600 SecondsServerTimeout = 30 SecondsSuppTimeout = 30 SecondsTxPeriod = 30 SecondsGuest-Vlan = 0This is an example of output from the show dot1x all privileged EXEC command when a restricted VLAN is configured:
Switch# show dot1x allDot1x Info for interface GigabitEthernet0/1----------------------------------------------------Supplicant MAC 0002.b3eb.0df6AuthSM State = AUTHENTICATED(AUTH-FAIL-VLAN)BendSM State = IDLEPosture = N/APortStatus = AUTHORIZED(AUTH-FAIL-VLAN)MaxReq = 2MaxAuthReq = 2HostMode = SinglePortControl = AutoControlDirection = BothQuietPeriod = 10 SecondsRe-authentication = DisabledReAuthPeriod = 3600 SecondsServerTimeout = 30 SecondsSuppTimeout = 30 SecondsTxPeriod = 10 SecondsGuest-Vlan = 3AuthFail-Vlan = 4AuthFail-Max-Attempts = 3This is an example of output from the show dot1x interface fastethernet0/3 privileged EXEC command:
Switch# show dot1x interface fastethernet0/3Supplicant MAC 00d0.b71b.35deAuthSM State = AUTHENTICATED (AUTH-FAIL-VLAN)BendSM State = IDLEReAuthPeriod = 4000 Seconds { (From Authentication Server) | (Locally Configured) }ReAuthAction = { Terminate | Reauthenticate }TimeToNextReauth = 1453 SecondsPortStatus = AUTHORIZEDMaxReq = 2HostMode = Single (AUTH-FAIL-VLAN)Port Control = AutoQuietPeriod = 60 SecondsRe-authentication = DisabledReAuthPeriod = 3600 SecondsServerTimeout = 30 SecondsSuppTimeout = 30 SecondsTxPeriod = 30 SecondsGuest-Vlan = 0This is an example of output from the show dot1x statistics interface fastethernet0/3 command. Table 2-16 describes the fields in the display.
Switch# show dot1x statistics interface fastethernet0/3PortStatistics Parameters for Dot1x--------------------------------------------TxReqId = 15 TxReq = 0 TxTotal = 15RxStart = 4 RxLogoff = 0 RxRespId = 1 RxResp = 1RxInvalid = 0 RxLenErr = 0 RxTotal= 6RxVersion = 1 LastRxSrcMac 00d0.b71b.35de
Related Commands
show env
Use the show env user EXEC command to display fan information for the switch.
show env {all | fan | power | rps} [ | {begin | exclude | include} expression]
Syntax Description
Command Modes
User EXEC
Command History
12.0(5.2)WC(1)
This command was introduced.
12.1(12c)EA1
The fan and power keywords were added.
Usage Guidelines
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.
Examples
This is an example of output from the show env all command:
Switch> show env allFAN is OKInternal POWER supply is FAULTYRPS is presentRPS is supplying powerThis is an example of output from the show env fan command:
Switch# show env fanFAN 1 is FAULTYThis is an example of output from the show env power command:
Switch> show env powerInternal POWER supply is FAULTYThis is an example of output from the show env rps command:
Switch> sho env rpsRPS is supplying powershow errdisable recovery
Use the show errdisable recovery user EXEC command to display the error-disable recovery timer information.
show errdisable recovery [ | {begin | exclude | include} expression]
Syntax Description
Command Modes
User EXEC
Command History
Usage Guidelines
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.
Examples
This is an example of output from the show errdisable recovery command:
Switch> show errdisable recoveryErrDisable Reason Timer Status----------------- --------------udld Disabledbpduguard Disabledsecurity-violatio Disabledchannel-misconfig Disabledvmps Disabledpagp-flap Disableddtp-flap Disabledlink-flap Disabledgbic-invalid Disabledpsecure-violation Disabledgbic-invalid Disableddhcp-rate-limit Disabledunicast-flood Disabledloopback DisabledTimer interval:300 secondsInterfaces that will be enabled at the next timeout:Interface Errdisable reason Time left(sec)--------- ----------------- --------------Gi0/1 link-flap 279
Note
Related Commands
Configures the recover mechanism variables.
show interfaces trunk
Displays interface status or a list of interfaces in error-disabled state.
show etherchannel
Use the show etherchannel user EXEC command to display EtherChannel information for a channel.
show etherchannel [channel-group-number] {detail | load-balance | port | port-channel | summary} [ | {begin | exclude | include} expression]
Syntax Description
Command Modes
User EXEC
Command History
12.1(6)EA2
This command was introduced. It replaced the show port group command.
12.1(14)EA1
The brief keyword was removed.
Usage Guidelines
If you do not specify a channel-group, all channel groups appear.
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.
Examples
This is an example of output from the show etherchannel 1 detail command:
Switch> show etherchannel 1 detailGroup state = L2Ports: 1 Maxports = 8Port-channels: 1 Max Port-channels = 1Ports in the group:-------------------Port: Fa0/3------------Port state = Down Not-in-BndlChannel group = 1 Mode = Automatic-Sl Gcchange = 0Port-channel = null GC = 0x00000000 Pseudo port-channel = Po1Port index = 0 Load = 0x00Flags: S - Device is sending Slow hello. C - Device is in Consistent state.A - Device is in Auto mode. P - Device learns on physical port.d - PAgP is down.Timers: H - Hello timer is running. Q - Quit timer is running.S - Switching timer is running. I - Interface timer is running.Local information:Hello Partner PAgP Learning GroupPort Flags State Timers Interval Count Priority Method IfindexFa0/3 dA U1/S1 1s 0 200 Any 0Age of the port in the current state: 10d:23h:07m:37sPort-channels in the group:----------------------Port-channel: Po1------------Age of the Port-channel = 03d:02h:22m:43sLogical slot/port = 1/0 Number of ports = 0GC = 0x00000000 HotStandBy port = nullPort state = Port-channel Ag-Not-InuseThis is an example of output from the show etherchannel 1 summary command:
Switch> show etherchannel 1 summaryFlags: D - down P - in port-channelI - stand-alone s - suspendedR - Layer3 S - Layer2u - unsuitable for bundlingU - port-channel in used - default portGroup Port-channel Ports-----+------------+-----------------------------------------------------------1 Po1(SU) Fa0/1(Pd) Fa0/2(P)This is an example of output from the show etherchannel 1 port command:
Switch> show etherchannel 1 portPorts in the group:-------------------Port: Fa0/3------------Port state = Down Not-in-BndlChannel group = 1 Mode = Automatic-Sl Gcchange = 0Port-channel = null GC = 0x00000000 Pseudo port-channel = Po1Port index = 0 Load = 0x00Flags: S - Device is sending Slow hello. C - Device is in Consistent state.A - Device is in Auto mode. P - Device learns on physical port.d - PAgP is down.Timers: H - Hello timer is running. Q - Quit timer is running.S - Switching timer is running. I - Interface timer is running.Local information:Hello Partner PAgP Learning GroupPort Flags State Timers Interval Count Priority Method IfindexFa0/3 dA U1/S1 1s 0 200 Any 0Age of the port in the current state: 10d:23h:13m:21sRelated Commands
Assigns an Ethernet interface to an EtherChannel group.
Accesses or creates the port channel.
show file
Use the show file privileged EXEC command to display a list of open file descriptors, file information, and file system information.
show file {descriptors | information {device:}filename | systems} [ | {begin | exclude |
include} expression]Syntax Description
Command Modes
Privileged EXEC
Command History
12.0(5.2)WC(1)
This command was introduced.
12.1(6)EA2
The descriptors and information keywords were added.
Usage Guidelines
File descriptors are the internal representations of open files. You can use this command to see if another user has a file open.
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.
Examples
This is an example of output from the show file descriptors command:
Switch# show file descriptorsFile Descriptors:FD Position Open PID Path0 187392 0001 2 tftp://temp/hampton/c2950g.a1 184320 030A 2 flash:c2950-i-m.aTable 2-17 describes the fields in the show file descriptors command output.
This is an example of output from the show file information nvram:startup-config command:
Switch# show file information nvram:startup-confignvram:startup-config:type is ascii textTable 2-18 lists the possible file types for the previous example.
This is an example of output from the show file systems command:
Switch# show file systemsFile Systems:Size(b) Free(b) Type Flags Prefixes* 7741440 433152 flash rw flash:7741440 433152 unknown rw zflash:32768 25316 nvram rw nvram:- - network rw tftp:- - opaque rw null:- - opaque rw system:- - opaque ro xmodem:- - opaque ro ymodem:- - network rw rcp:- - network rw ftp:For this example, Table 2-19 describes the fields in the show file systems command output. Table 2-20 lists the file system types. Table 2-21 lists the file system flags.
Table 2-21 File System Flags
ro
The file system is read-only.
wo
The file system is write-only
rw
The file system is read/write.
show flowcontrol
Use the show flowcontrol user EXEC command to display the flow control status and statistics.
show flowcontrol [interface interface-id | module module-number] [ | {begin | exclude | include} expression]
Syntax Description
Command Modes
User EXEC
Command History
Usage Guidelines
Use this command to display the flow control status and statistics on the switch or for a specific interface.
Use the show flowcontrol command to display information about all the switch interfaces. (Flowcontrol is supported only on Gigabit Ethernet interfaces.) The output from the show flowcontrol command is the same as the output from the show flowcontrol module module-number command.
Use the show flowcontrol interface interface-id command to display flow control configuration and status information about the interfaces on the switch.
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.
Examples
This is an example of output from the show flowcontrol command:
Switch> show flowcontrolPort Send FlowControl Receive FlowControl RxPause TxPauseadmin oper admin oper--------- -------- -------- -------- -------- ------- -------Gi0/1 Unsupp. Unsupp. off off 0 0Gi0/2 desired off off off 0 0This is an example of output from the show flowcontrol interface interface-id command:
Switch> show flowcontrol gigabitethernet0/2Port Send FlowControl Receive FlowControl RxPause TxPauseadmin oper admin oper--------- -------- -------- -------- -------- ------- -------Gi0/2 desired off off off 0 0Related Commands
show interfaces
Use the show interfaces privileged EXEC command to display the administrative and operational status of all interfaces or a specified interface.
show interfaces [interface-id | vlan vlan-id] | [accounting | capabilities [module module-number] | cpe [port port-id] | description | etherchannel | flowcontrol | media [interface-id] | pruning | stats | status [err-disabled] | switchport | trunk | transceiver properties] [ | {begin | exclude | include} expression]
Syntax Description
Note
Command Modes
Privileged EXEC
Command History
Usage Guidelines
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.
Examples
This is an example of output from the show interfaces accounting command:
Switch# show interfaces accountingVlan1Protocol Pkts In Chars In Pkts Out Chars OutIP 17950 2351279 3205 411175ARP 8626 552064 62 3720Interface Vlan5 is disabledFastEthernet0/1Protocol Pkts In Chars In Pkts Out Chars OutSpanning Tree 2956958 179218508 34383 2131700CDP 14301 5777240 14307 5722418VTP 0 0 1408 145908DTP 28592 1572560 0 0<output truncated>This is an example of output from the show interfaces capabilities command:
Switch# show interfaces fastethernet0/1 capabilitiesFastEthernet0/1Model: WS-C2950G-48-EIType: 10/100BaseTXSpeed: 10,100,autoDuplex: half,full,autoUDLD: yesTrunk encap. type: 802.1QTrunk mode: on,off,desirable,nonegotiateChannel: yesBroadcast suppression: percentage(0-100)Flowcontrol: rx-(none),tx-(none)Fast Start: yesCoS rewrite: yesToS rewrite: yesInline power: noSPAN: source/destinationPortSecure: YesDot1x: YesThis is an example of output from the show interfaces command for a specified interface:
Switch# show interfaces fastethernet0/1FastEthernet0/1 is up, line protocol is downHardware is Fast Ethernet, address is 0005.7428.09c1 (bia 0005.7428.09c1)MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,reliability 255/255, txload 1/255, rxload 1/255Encapsulation ARPA, loopback not setKeepalive set (10 sec)Auto-duplex, Auto-speedinput flow-control is off, output flow-control is offLast input never, output 4d21h, output hang neverLast clearing of "show interface" counters neverInput queue:0/75/0/0 (size/max/drops/flushes); Total output drops:0Queueing strategy:fifoOutput queue :0/40 (size/max)5 minute input rate 0 bits/sec, 0 packets/sec5 minute output rate 0 bits/sec, 0 packets/sec1 packets input, 64 bytes, 0 no bufferReceived 0 broadcasts, 0 runts, 0 giants, 0 throttles0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored0 watchdog, 0 multicast, 0 pause input0 input packets with dribble condition detected1 packets output, 64 bytes, 0 underruns0 output errors, 0 collisions, 2 interface resets0 babbles, 0 late collision, 0 deferred0 lost carrier, 0 no carrier, 0 PAUSE output0 output buffer failures, 0 output buffers swapped outThis is an example of output from the show interfaces description command for an interface when the interface has been described as Connects to Marketing by using the description interface configuration command.
Switch# show interfaces gigabitethernet0/1 descriptionInterface Status Protocol DescriptionGi0/1 up down Connects to MarketingThis is an example of output from the show interfaces pruning command for an interface when pruning is enabled in the VTP domain:
Switch# show interfaces fastethernet0/1 pruningPort Vlans pruned for lack of request by neighborFa0/1 4,196Port Vlan traffic requested of neighborFa0/1 1,4This is an example of output from the show interfaces stats command:
Switch# show interfaces statsVlan1Switching path Pkts In Chars In Pkts Out Chars OutProcessor 3224706 223689126 3277307 280637322Route cache 0 0 0 0Total 3224706 223689126 3277307 280637322Interface Vlan5 is disabledFastEthernet0/1Switching path Pkts In Chars In Pkts Out Chars OutProcessor 3286423 231672787 179501 17431060Route cache 0 0 0 0Total 3286423 231672787 179501 17431060This is an example of output from the show interfaces status command. It displays the status of all interfaces.
Switch# show interfaces statusPort Name Status Vlan Duplex Speed TypeFa0/1 notconnect 1 auto auto 10/100BaseTXFa0/2 notconnect 1 auto auto 10/100BaseTXFa0/3 disabled 100 auto auto 10/100BaseTXFa0/4 connected trunk a-full a-100 10/100BaseTXFa0/5 notconnect 1 auto auto 10/100BaseTXFa0/6 connected trunk a-full a-100 10/100BaseTX<output truncated>This is an example of output from the show interfaces status err-disabled command. It displays the status of interfaces in error-disabled state.
switch# show interfaces fastethernet0/1 status err-disabledPort Name Status ReasonFa0/1 err-disabled psecure-violationThis is an example of output from the show interfaces etherchannel command when port channels are configured on the switch:
Switch# show interfaces etherchannel----FastEthernet0/1:Port state = Up Mstr In-BndlChannel group = 1 Mode = On/FEC Gcchange = 0Port-channel = Po1 GC = 0x00010001 Pseudo port-channel = Po1Port index = 0 Load = 0x00Age of the port in the current state:00d:00h:06m:54s----Port-channel1:Age of the Port-channel = 09d:22h:45m:14sLogical slot/port = 1/0 Number of ports = 1GC = 0x00010001 HotStandBy port = nullPort state = Port-channel Ag-InusePorts in the Port-channel:Index Load Port EC state------+------+------+------------0 00 Fa0/1 onTime since last port bundled: 00d:00h:06m:54s Fa0/1This is an example of output from the show interfaces flowcontrol command. Table 2-22 lists the fields in this display.
Switch# show interfaces flowcontrolPort Send FlowControl Receive FlowControl RxPause TxPauseadmin oper admin oper----- -------- -------- -------- -------- ------- -------Fa0/1 Unsupp. Unsupp. off off 0 0Fa0/2 Unsupp. Unsupp. off off 0 0<output truncated>Gi0/1 desired off off off 0 0
This is an example of output from the show interfaces switchport command for a single interface. Table 2-23 describes the fields in the output.
Switch# show interfaces gigabitethernet0/1 switchportName: Gi0/1Switchport:EnabledAdministrative Mode:dynamic desirableOperational Mode:static accessAdministrative Trunking Encapsulation:negotiateNegotiation of Trunking:OnAccess Mode VLAN:1 (default)Trunking Native Mode VLAN:1 (default)Voice VLAN:noneAdministrative private-vlan host-association:noneAdministrative private-vlan mapping:noneOperational private-vlan:noneTrunking VLANs Enabled:ALLPruning VLANs Enabled:2-1001Capture Mode: DisabledCapture VLANs Allowed:ALLProtected:trueUnknown unicast blocked:disabledUnknown multicast blocked:disabledVoice VLAN:none (Inactive)Appliance trust:none
This is an example of output from the show interfaces trunk command:
Switch# show interfaces trunkPort Mode Encapsulation Status Native vlanFa0/4 on 802.1q trunking 1Fa0/6 on 802.1q trunking 1Port Vlans allowed on trunkFa0/4 1-4094Fa0/6 1-4094Port Vlans allowed and active in management domainFa0/4 1-2,51-52Fa0/6 1-2,51-52Port Vlans in spanning tree forwarding state and not prunedFa0/4 1Fa0/6 1-2,51-52This is an example of output from the show interfaces trunk command for an interface. It displays trunking information for the interface.
Switch# show interfaces fastethernet0/1 trunkPort Mode Encapsulation Status Native vlanFa0/1 desirable 802.1q trunking 1Port Vlans allowed on trunkFa0/1 1-4094Port Vlans allowed and active in management domainFa0/1 1,4,196,306Port Vlans in spanning tree forwarding state and not prunedFa0/1 1,306This is an example of output from the show interfaces transceiver properties command. If you do not specify an interface, the output of the command shows the status on all switch ports:
Switch# show interfaces transceiver propertiesName : Fa0/1Administrative Speed: autoAdministrative Duplex: autoAdministrative Auto-MDIX: N/AOperational Speed: 100Operational Duplex: fullOperational Auto-MDIX: N/AName : Fa0/2Administrative Speed: autoAdministrative Duplex: autoAdministrative Auto-MDIX: N/AOperational Speed: 10Operational Duplex: fullOperational Auto-MDIX: N/AName : Fa0/3Administrative Speed: autoAdministrative Duplex: autoAdministrative Auto-MDIX: N/AOperational Speed: 100Operational Duplex: fullOperational Auto-MDIX: N/A<output truncated>This is an example of output from the show interfaces module number transceiver properties command for a specific interface:
Switch# show interfaces fastethernet0/1 transceiver propertiesName : Fa0/1Administrative Speed: autoAdministrative Duplex: autoAdministrative Auto-MDIX: N/AOperational Speed: 100Operational Duplex: fullOperational Auto-MDIX: N/AThis is an example of output from the show interfaces command for an LRE port:
Switch# show interfaces longreachethernet0/5LongReachEthernet0/5 is up, line protocol is upHardware is Ethernet over LRE, address is 0006.2871.5902 (bia 0006.2871.5902)MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,reliability 255/255, txload 1/255, rxload 1/255Encapsulation ARPA, loopback not setKeepalive not setHalf-duplex, Auto Speed (10), 100BaseTX/FXARP type: ARPA, ARP Timeout 04:00:00Last input 00:00:21, output 00:00:00, output hang neverLast clearing of "show interface" counters neverQueueing strategy: fifoOutput queue 0/40, 0 drops; input queue 0/75, 0 drops5 minute input rate 0 bits/sec, 0 packets/sec5 minute output rate 0 bits/sec, 0 packets/sec8272 packets input, 852898 bytes, 0 no bufferReceived 1182 broadcasts, 0 runts, 0 giants, 0 throttles0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored0 watchdog, 1182 multicast0 input packets with dribble condition detected61899 packets output, 17981033 bytes, 0 underruns0 output errors, 0 collisions, 1 interface resets0 babbles, 0 late collision, 0 deferred0 lost carrier, 0 no carrier0 output buffer failures, 0 output buffers swapped outThis is an example of output from the show interfaces command for all interfaces on a CPE device:
Switch# show interfaces longreachethernet0/2 cpePort Status Speed Duplex---- ------------ ----- ------1 notconnected auto NA2 notconnected auto NA3 notconnected auto NA4 notconnected auto NA5 connected 100 halfSwitch#This is an example of output from the show interfaces command for a port on a CPE device:
Switch# show interfaces longreachethernet0/2 cpe port 5Port Status Speed Duplex---- ------------ ----- ------5 connected 100 halfSwitch#This is an example of output from the show interfaces media command on an interface:
Switch# show interfaces gigabitethernet0/1 mediaPort Media-configured Active AttachedGi0/1 auto-select rj45 1000BaseSX-10/100/1000BaseTXSwitch#This is an example of output from the show interfaces media command:
Switch# show interfaces mediaPort Media-configured Active AttachedGi0/1 auto-select rj45 1000BaseSX-10/100/1000BaseTXGi0/2 prefer-sfp sfp 1000BaseSX-10/100/1000BaseTXRelated Commands
Configures a port as a static-access or dynamic-access port.
Isolates Layer 2 unicast, multicast, and broadcast traffic from other protected ports on the same switch.
switchport trunk pruning
Configures the VLAN pruning-eligible list for ports in trunking mode.
show interfaces counters
Use the show interfaces counters privileged EXEC command to display various counters for a specific interface or for all interfaces.
show interfaces [interface-id | vlan vlan-id] counters [errors | etherchannel | trunk] [ | {begin | exclude | include} expression]
Syntax Description
Command Modes
Privileged EXEC
Command History
12.1(6)EA2
This command was introduced.
12.2(22)EA2
The broadcast, multicast, and unicast keywords were removed.
Usage Guidelines
If you do not enter any keywords, all counters for all interfaces are included.
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.
Examples
This is an example of output from the show interfaces counters command. It displays all the counters for the switch. Table 2-24 describes the fields in the output.
Switch# show interfaces countersPort InOctets InUcastPkts InMcastPkts InBcastPktsGi0/1 23324617 10376 185709 126020Gi0/2 0 0 0 0Port OutOctets OutUcastPkts OutMcastPkts OutBcastPktsGi0/1 4990607 28079 21122 10Gi0/2 1621568 25337 0 0
This is an example of output from the show interfaces counters errors command. It displays the interface error counters for all interfaces. Table 2-25 describes the fields in the output.
Switch# show interfaces counters errorsPort Align-Err FCS-Err Xmit-Err Rcv-Err UnderSizeGi0/1 0 0 0 0 0Gi0/2 0 0 0 0 0Port Single-Col Multi-Col Late-Col Excess-Col Carri-Sen Runts GiantsGi0/1 0 0 0 0 0 0 0Gi0/2 0 0 0 0 0 0 0
Table 2-25 show interfaces counters errors Field Descriptions
Align-Err
Displays the total number of frames that are received on an interface and have alignment errors.
FCS-Err
Displays the total number of frames that are received on an interface, have a valid length (in bytes), but do not have the correct FCS1 values.
Xmit-Err
Displays the total number of frames that have errors during transmission.
Rcv-Err
Displays the total number of frames that are received on an interface and have errors.
Undersize
Displays the total number of frames received that are less than 64 bytes (including the FCS bits and excluding the frame header) and have either an FCS or an alignment error.
Single-col
Displays the total number of frames that are successfully sent on an interface after one collision occurs.
Multi-col
Displays the total number of frames that are successfully sent on an interface after more than one collision occurs.
Late-col
After a frame is sent, displays the number of times that a collision is detected on an interface after 512 bit times.
Excess-col
Display the number of frames that could not be sent on an interface because more than 16 collisions occurs.
Carri-Sen
Displays the number of occurrences in which the interface detects a false carrier when frames are not sent or received.
Runts
Displays the number of frames received on an interface that are smaller than 64 bytes and have an invalid FCS value.
Giants
Displays the number of frames that are larger than the maximum allowed frame size and have a valid FCS value.
1 FCS = frame check sequence
This is an example of output from the show interfaces counters trunk command. It displays the trunk counters for all interfaces. Table 2-26 describes the fields in the output.
Switch# show interfaces counters trunkPort TrunkFramesTx TrunkFramesRx WrongEncapGi0/1 0 0 0Gi0/2 0 0 0
Related Commands
show inventory
Use the show inventory user EXEC command to display product identification (PID) information for the hardware.
show inventory [entity-name | raw] [ | {begin | exclude | include} expression]
Syntax Description
Command Modes
User EXEC
Command History
Usage Guidelines
The command is case sensitive. With no arguments, the show inventory command produces a compact dump of all identifiable entities that have a product identifier. The compact dump displays the entity location (slot identity), entity description, and the unique device identifier (UDI) (PID, VID, and SN) of that entity.
Note
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output are not displayed, but the lines that contain Output are displayed.
Examples
This is example output from the show inventory command:
Switch> show inventoryNAME: "sw-2-9-calg", DESCR: "Cisco Catalyst c2950 switch with 24 10/100 BaseTX ports and 2 GBIC (Gigabit Interface Converter) slots"PID: WS-C2950G-24-EI , VID: A0 , SN: FHK0603Y088show ip access-lists
Use the show ip access-lists privileged EXEC command to display IP access control lists (ACLs) configured on the switch.
show ip access-lists [name | number] [ | {begin | exclude | include} expression]
Syntax Description
Command Modes
Privileged EXEC
Command History
Usage Guidelines
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.
Examples
This is an example of output from the show ip access-lists command:
Switch# show ip access-listsStandard IP access list testingaclpermit 10.10.10.2Standard IP access list wizard_1-1-1-2permit 1.1.1.2Extended IP access list 103permit tcp any any eq wwwExtended IP access list CMP-NAT-ACLDynamic Cluster-HSRP deny ip any anyDynamic Cluster-NAT permit ip any anypermit ip host 10.245.155.128 anypermit ip host 10.245.137.0 anypermit ip host 10.146.106.192 anypermit ip host 10.216.25.128 anypermit ip host 10.228.215.0 anypermit ip host 10.221.111.64 anypermit ip host 10.123.222.192 anypermit ip host 10.169.110.128 anypermit ip host 10.186.122.64 anyThis is an example of output from the show ip access-lists 103 command:
Switch# show ip access-lists 103Extended IP access list 103permit tcp any any eq wwwRelated Commands
Configures an extended IP ACL on the switch.
Configures a standard IP ACL on the switch.
Configures an IP ACL on the switch.
Displays ACLs configured on a switch.
show ip dhcp snooping
Use the show ip dhcp snooping user EXEC command to display the DHCP snooping configuration.
show ip dhcp snooping
Syntax Description
This command has no arguments or keywords.
Command Modes
User EXEC
Command History
Usage Guidelines
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.
Examples
This is an example of output from the show ip dhcp snooping command:
Switch> show ip dhcp snoopingSwitch DHCP snooping is enabledDHCP snooping is configured on following VLANs:40-42Insertion of option 82 is enabledInterface Trusted Rate limit (pps)------------------------ ------- ----------------FastEthernet0/5 yes unlimitedFastEthernet0/7 yes unlimitedFastEthernet0/3 no 5000FastEthernet0/5 yes unlimitedFastEthernet0/7 yes unlimitedFastEthernet0/5 yes unlimitedFastEthernet0/7 yes unlimitedRelated Commands
show ip dhcp snooping binding
Use the show ip dhcp snooping binding user EXEC command to display the DHCP snooping binding table and configuration information for all interfaces on a switch.
show ip dhcp snooping binding [ip-address] [mac-address] [dynamic] [interface interface-id] [static] [vlan vlan-id] [ | {begin | exclude | include} expression]
Syntax Description
Command Modes
User EXEC
Command History
Usage Guidelines
The show ip dhcp snooping binding command output shows the dynamically configured bindings.
If DHCP snooping is enabled and an interface changes to the down state, the switch does not delete the manually configured bindings.
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output do not appear, but the lines that contain Output appear.
Examples
This example shows how to display the DHCP snooping binding entries for a switch:
Switch> show ip dhcp snooping bindingMacAddress IpAddress Lease(sec) Type VLAN Interface------------------ --------------- ---------- ------- ---- --------------------00:30:94:C2:EF:35 41.0.0.51 286 dynamic 41 FastEthernet0/300:D0:B7:1B:35:DE 41.0.0.52 237 dynamic 41 FastEthernet0/300:00:00:00:00:01 40.0.0.46 286 dynamic 40 FastEthernet0/800:00:00:00:00:03 42.0.0.33 286 dynamic 42 FastEthernet0/800:00:00:00:00:02 41.0.0.53 286 dynamic 41 FastEthernet0/8This example shows how to display the DHCP snooping binding entries for a specific IP address:
Switch> show ip dhcp snooping binding 41.0.0.51MacAddress IpAddress Lease(sec) Type VLAN Interface------------------ --------------- ---------- ------- ---- --------------------00:30:94:C2:EF:35 41.0.0.51 285 dynamic 41 FastEthernet0/3This example shows how to display the DHCP snooping binding entries for a specific MAC address:
Switch> show ip dhcp snooping binding 0030.94c2.ef35MacAddress IpAddress Lease(sec) Type VLAN Interface------------------ --------------- ---------- ------- ---- --------------------00:30:94:C2:EF:35 41.0.0.51 279 dynamic 41 FastEthernet0/3This example shows how to display the DHCP snooping dynamic binding entries on a switch:
Switch> show ip dhcp snooping binding dynamicMacAddress IpAddress Lease(sec) Type VLAN Interface------------------ --------------- ---------- ------- ---- --------------------00:30:94:C2:EF:35 41.0.0.51 286 dynamic 41 FastEthernet0/300:D0:B7:1B:35:DE 41.0.0.52 296 dynamic 41 FastEthernet0/300:00:00:00:00:01 40.0.0.46 46 dynamic 40 FastEthernet0/800:00:00:00:00:03 42.0.0.33 46 dynamic 42 FastEthernet0/800:00:00:00:00:02 41.0.0.53 46 dynamic 41 FastEthernet0/8This example shows how to display the DHCP snooping binding entries on an interface:
Switch> show ip dhcp snooping binding interface fastethernet0/3MacAddress IpAddress Lease(sec) Type VLAN Interface------------------ --------------- ---------- ------- ---- --------------------00:30:94:C2:EF:35 41.0.0.51 290 dynamic 41 FastEthernet0/300:D0:B7:1B:35:DE 41.0.0.52 270 dynamic 41 FastEthernet0/3This example shows how to display the DHCP snooping binding entries on VLAN 41:
Switch> show ip dhcp snooping binding vlan 41MacAddress IpAddress Lease(sec) Type VLAN Interface------------------ --------------- ---------- ------- ---- --------------------00:30:94:C2:EF:35 41.0.0.51 274 dynamic 41 FastEthernet0/300:D0:B7:1B:35:DE 41.0.0.52 165 dynamic 41 FastEthernet0/300:00:00:00:00:02 41.0.0.53 65 dynamic 41 FastEthernet0/8Table 2-27 describes the fields in the show ip dhcp snooping binding command output.
Related Commands
