Table Of Contents
clear controllers ethernet-controller
clear mac-address-table notification
hw-module slot module-slot # upgrade lre
lre upgrade default family device-family binary
mac-address-table notification
show controllers ethernet-controller
show controllers lre cpe protected
show controllers lre interface-id actual
show controllers lre interface-id admin
show controllers lre log level
show controllers lre version mfg
show local ethernet-statistics
show mac-address-table notification
show remote ethernet-statistics
snmp-server enable traps mac-notification
snmp-server enable traps vlan-membership
spanning-tree portfast bpduguard
switchport trunk encapsulation
tacacs-server dns-alias-lookup
Cisco IOS Commands
abort
Use the abort VLAN database command to abandon the proposed VLAN database, exit VLAN database mode, and return to privileged EXEC mode.
abort
Syntax Description
This command has no arguments or keywords.
Defaults
No default is defined.
Command Modes
VLAN database
Command History
Usage Guidelines
If you have added, deleted, or modified VLAN parameters in VLAN database mode but you do not want to keep the changes, the abort command causes all the changes to be abandoned. The VLAN configuration that was running before you entered VLAN database mode continues to be used.
Examples
This example shows how to abandon the proposed VLAN database and to exit to the privileged EXEC mode:
Switch(vlan)# abortSwitch#You can verify that no VLAN database changes occurred by entering the show vlan brief user EXEC command.
Related Commands
apply
Use the apply VLAN database command to implement the proposed VLAN database to increment the database configuration revision number, to propagate it throughout the administrative domain, and to remain in VLAN database mode.
apply
Syntax Description
This command has no arguments or keywords.
Defaults
No default is defined.
Command Modes
VLAN database
Command History
Usage Guidelines
The apply command implements the configuration changes that you made after you entered VLAN database mode and uses them for the running configuration. This command keeps you in VLAN database mode.
You cannot use this command when the switch is in the VLAN Trunking Protocol (VTP) client mode.
Examples
This example shows how to implement the proposed VLAN database as the running database:
Switch(vlan)# applyYou can verify that VLAN database changes occurred by entering the show vlan user EXEC command.
Related Commands
cgmp
Use the cgmp global configuration command to enable Cisco Group Management Protocol (CGMP) and other CGMP options. Use the no form of this command to disable CGMP and its options.
cgmp {leave-processing | holdtime time | reserved}
no cgmp {leave-processing | holdtime | reserved}
Syntax Description
Defaults
CGMP is enabled.
Fast Leave is disabled.
The hold time is 300 seconds.
Reserved addresses are allowed as group destination addresses.
Command Modes
Global configuration
Command History
11.2(8)SA3
This command was first introduced.
12.0(5)XP
The reserved keyword was added.
Usage Guidelines
CGMP must be enabled before the Fast Leave option can be enabled.
Examples
This example shows how to disable CGMP:
Switch(config)# no cgmpThis example shows how to disable the Fast Leave option:
Switch(config)# no cgmp leave-processingThis example shows how to set 400 seconds as the length of time the switch waits before ceasing to exchange messages with a router:
Switch(config)# cgmp holdtime 400This example shows how to remove the amount of time the switch waits before ceasing to exchange messages with a router:
Switch(config)# no cgmp holdtimeThis example shows how to exclude reserved addresses from the group destination address for compatibility with Catalyst 5000 series switches.
Switch(config)# no cgmp reservedYou can verify the previous commands by entering the show cgmp user EXEC command.
Related Commands
Deletes information that the switch learned by using CGMP.
Displays the state of the CGMP-learned multicast groups and routers.
clear cgmp
Use the clear cgmp privileged EXEC command to delete information that was learned by the switch by using the Cisco Group Management Protocol (CGMP).
clear cgmp [vlan vlan-id] | [group [address] | router [address]]
Syntax Description
Command Modes
Privileged EXEC
Command History
Usage Guidelines
Using clear cgmp with no arguments deletes all groups and routers in all VLANs.
Examples
This example shows how to delete all groups and routers on VLAN 2:
Switch# clear cgmp vlan 2This example shows how to delete all groups on all VLANs:
Switch# clear cgmp groupThis example shows how to delete a router address on VLAN 2:
Switch# clear cgmp vlan 2 router 0012.1234.1234You can verify the previous commands by entering the show cgmp user EXEC command.
Related Commands
Enables CGMP and the Fast Leave option and sets the router port aging time.
Displays the state of the CGMP-learned multicast groups and routers.
clear controllers ethernet-controller
Use the clear controllers ethernet-controller privileged EXEC command to delete the Ethernet link transmit and receive statistics on a switch port and on a Long-Reach Ethernet (LRE) customer premises equipment (CPE) device.
clear controllers ethernet-controller [interface-id]
Syntax Description
Defaults
There is no default.
Command Modes
Privileged EXEC
Command History
12.0(5)WC1
This command was first introduced.
12.0(5)WC4
This command was extended to support the Cisco 585 LRE CPE device.
Usage Guidelines
Using the clear controllers ethernet-controller command without specifying a switch port clears the Ethernet link statistics for all ports on the switch. If you use this command on a switch LRE port, it clears the statistics on the Ethernet port on the Cisco 575 LRE CPE device or on all four Ethernet ports on the Cisco 585 LRE CPE device. The Cisco 585 LRE CPE Ethernet ports cannot be cleared on a per-port basis.
The CPE Ethernet link is the connection between the CPE Ethernet port and the remote Ethernet device (such as a PC) connected to it. It is not the link between the switch LRE port and the LRE CPE device.
It takes the switch several seconds to clear all of the ports. The switch LRE ports take longer to clear than all the other port types.
Examples
This example shows how to use the clear controllers ethernet-controller command to delete the Ethernet link statistics on Fast Ethernet port 0/1:
Switch# clear controllers ethernet-controller FastEthernet 0/1Switch#This example shows how to use the clear controllers ethernet-controller command to delete the Ethernet link statistics between the LRE CPE device and the remote Ethernet device. The LRE CPE device is connected to switch LRE port 1:
Switch# clear controllers ethernet-controller lo0/1Switch#You can verify that information was deleted by entering the show controllers ethernet-controller user EXEC command.
Related Commands
Displays the Ethernet link transmit and receive statistics on a Fast Ethernet or switch LRE port.
clear controllers lre log
Use the clear controllers lre log privileged EXEC command to delete the history of link, configuration, and timer events for a specific Long-Reach Ethernet (LRE) port or for all switch LRE ports.
clear controllers lre log [interface-id]
Syntax Description
Defaults
There is no default.
Command Modes
Privileged EXEC
Command History
12.0(5)WC1
This command was first introduced.
12.0(5)WC4
This command was extended to support the Cisco 585 LRE customer premises equipment (CPE) device.
Usage Guidelines
Using the clear controllers lre log command but without specifying a switch LRE port deletes the history of events on all switch LRE ports.
Examples
This example shows how to use the clear controllers lre log command to delete the history of events on switch LRE port 3:
Switch# clear controllers lre log longReachEthernet 0/3Switch#You can verify that information was deleted by entering the show controllers lre log privileged EXEC command.
Related Commands
Displays the history of link, configuration, and timer events for a specific switch LRE port or for all LRE ports on the switch.
clear ip address
Use the clear ip address privileged EXEC command to delete an IP address for a switch without disabling the IP processing.
clear ip address [vlan vlan-id]
Syntax Description
vlan vlan-id
(Optional) Delete an IP address only within the specified VLAN.
Valid IDs are from 1 to 1000; do not enter leading zeros.
Command Modes
Privileged EXEC
Command History
11.2(8)SA
This command was first introduced.
11.2(8)SA3
The vlan keyword was added.
Usage Guidelines
A switch can have one IP address.
The IP address of the switch can be accessed only by nodes connected to ports that belong to the management VLAN. By default, the management VLAN is VLAN 1, but you can configure a different VLAN as the management VLAN.
If your switch receives its IP address from a Bootstrap Protocol (BOOTP) or Dynamic Host Configuration Protocol (DHCP) server and you delete the switch IP address by using the clear ip address command, the BOOTP or DHCP server reassigns the address.
Examples
This example shows how to clear the IP address for the switch on VLAN 1:
Switch# clear ip address vlan 1You can verify the previous commands by entering the show running-config privileged EXEC command.
Related Commands
clear lre rate selection
Use the clear lre rate selection privileged EXEC command to reset the rate selection setting and to restart rate selection for a specific Long-Reach Ethernet (LRE) port or for all switch LRE ports.
clear lre rate selection [lock] [interface-id]
Syntax Description
lock
(Optional) Rate selection runs on all ports that have rate selection enabled, including ports that are locked.
interface-id
(Optional) ID of the switch LRE port.
Defaults
No default is defined.
Command Modes
Privileged EXEC
Command History
Usage Guidelines
Using the clear lre rate selection command without specifying a switch LRE port runs rate selection on all switch LRE ports that have rate selection enabled except those ports with locked profiles. Specifying the lock keyword runs rate selection on all profiles, including those that are locked.
Examples
This example shows how to use the clear lre rate selection command to reset the rate selection setting and to restart rate selection on port 1.
Switch# clear lre rate selection lo0/1Switch#This example shows how to reset and to restart rate selection on all ports, including any locked ports.
Switch# clear lre rate selection lockSwitch#This example shows how to reset and to restart rate selection on port 1, overriding the locked status.
Switch# clear lre rate selection lock lo0/1Switch#Related Commands
Enables rate selection on a specific port.
Assigns a rate selection sequence for a specific port.
Assigns a rate selection sequence for the entire switch.
clear mac-address-table
Use the clear mac-address-table privileged EXEC command to delete entries from the MAC address table.
clear mac-address-table [static | dynamic | secure] [address hw-addr] [interface interface]
[atm slot/port] [vlan vlan-id]Syntax Description
Command Modes
Privileged EXEC
Command History
11.2(8)SA
This command was first introduced.
11.2(8)SA3
The vlan keyword was added.
11.2(8)SA5
The atm keyword was added.
Usage Guidelines
This command deletes entries from the global MAC address table. Specific subsets can be deleted by using the optional keywords and values. If more than one optional keyword is used, all of the conditions in the argument must be true for that entry to be deleted.
Examples
This example shows how to delete static addresses on port fa0/7:
Switch# clear mac-address-table static interface fa0/7This example shows how to delete all secure addresses in VLAN 3:
Switch# clear mac-address-table secure vlan 3This example shows how to delete address 0099.7766.5544 from all ports in all VLANs. If the address exists in multiple VLANs or multiple ports, all the instances are deleted.
Switch# clear mac-address-table address 0099.7766.5544This example shows how to delete address 0099.7766.5544 only in VLAN 2:
Switch# clear mac-address-table address 0099.7766.5544 vlan 2This example shows how to delete the secure MAC address 00c0.00a0.03fa associated with the ATM port in expansion slot 2:
Switch(config)# clear mac-address-table secure 00c0.00a0.03fa atm 2/1This example shows how to delete the static address 00c0.00a0.03fa associated with the ATM port in expansion slot 2:
Switch(config)# clear mac-address-table static 00c0.00a0.03fa atm 2/1You can verify the previous commands by entering the show mac-address-table user EXEC command.
Related Commands
clear mac-address-table notification
Use the clear mac-address-table notification privileged EXEC command to clear the addresses maintained by the MAC address notification feature.
clear mac-address-table notification
Syntax Description
This command has no keywords or options.
Command Modes
Privileged EXEC
Command History
Usage Guidelines
This command clears the counters for the MAC addresses added, the MAC addresses removed, and the number of traps sent to the NMS counters on the switch. This command does not clear the history table on the switch.
Related Commands
clear vmps statistics
Use the clear vmps statistics privileged EXEC command to clear the statistics maintained by the VLAN Query Protocol (VQP) client.
clear vmps statistics
Syntax Description
This command has no arguments or keywords.
Command Modes
Privileged EXEC
Command History
Examples
This example shows how to clear VLAN Membership Policy Server (VMPS) statistics:
Switch# clear vmps statisticsYou can verify the previous command by entering the show vmps statistics privileged EXEC command.
Related Commands
Displays the VLAN Query Protocol (VQP) version, reconfirmation interval, retry count, VMPS IP addresses, and the current and primary servers.
clear vtp counters
Use the clear vtp counters privileged EXEC command to clear the VLAN Trunking Protocol (VTP) and pruning counters.
clear vtp counters
Syntax Description
This command has no arguments or keywords.
Command Modes
Privileged EXEC
Command History
Examples
This example shows how to clear the VTP counters:
Switch# clear vtp countersYou can verify the previous command by entering the show vtp counters user EXEC command.
Related Commands
show vtp counters
Display general information about the VTP management domain, status, and counters.
cluster commander-address
You do not need to enter this command. The command switch automatically provides its MAC address to member switches when these switches join the cluster. The member switch adds this information and other cluster information to its running configuration file. Enter the no form of this global configuration command from the member switch console port to remove it from a cluster only during debugging or recovery procedures.
cluster commander-address mac-address [member number name name]
no cluster commander-address
Syntax Description
Defaults
The switch is not a member of any cluster.
Command Modes
Global configuration
Command History
11.2(8)SA6
This command was first introduced.
12.0(5)XU
The member and name keywords were added.
Usage Guidelines
A cluster member can belong to only one command switch.
The member switch retains the identity of the command switch during a system reload by using the mac-address parameter.
You can enter the no form on a member switch to remove it from the cluster during debugging or recovery procedures. You would normally use this command from the member switch console port only when the member has lost communication with the command switch. With normal switch configuration, we recommend that you remove member switches only by entering the no cluster member n global configuration command on the command switch.
When a standby command-switch becomes active (becomes the command switch), it removes the cluster commander-address line from its configuration.
Examples
This is partial sample output from the running configuration of a cluster member.
Switch(config)# show running-configuration<output truncated>cluster commander-address 00e0.9bc0.a500 member 4 name my_cluster<output truncated>This example shows how to remove a member from the cluster by using the cluster member console.
Switch-es3# configure terminalEnter configuration commands, one per line. End with CNTL/Z.Switch-es3(config)# no cluster commander-addressYou can verify the previous command by entering the show cluster command in user EXEC mode.
Related Commands
Displays the cluster status and a summary of the cluster to which the switch belongs.
cluster discovery hop-count
Use the cluster discovery hop-count global configuration command on the command switch to set the hop-count limit for extended discovery of candidate switches. Use the no form of this command to set the hop count to the default value.
cluster discovery hop-count number
no cluster discovery hop-count
default cluster discovery hop-count
Syntax Description
Defaults
The hop count is set to 3.
Command Modes
Global configuration
Command History
Usage Guidelines
Enter this command only on the command switch. This command does not operate on member switches.
If the hop count is set to 1, it disables extended discovery. The command switch discovers only candidates that are one hop from the edge of the cluster. The edge of the cluster is the point between the last discovered member switch and the first discovered candidate switch.
Examples
This example shows how to set the hop count limit to 4. This command is entered on the command switch.
Switch(config)# cluster discovery hop-count 4You can verify the previous command by entering the show cluster command in user EXEC mode.
Related Commands
Displays the cluster status and a summary of the cluster to which the switch belongs.
Displays a list of candidate switches.
cluster enable
Use the cluster enable global configuration command on a command-capable switch to enable it as the cluster command switch, assign a cluster name, and optionally assign a member number to it. Use the no form of the command to remove all members and to make the command switch a candidate switch.
cluster enable name [command-switch-member-number]
no cluster enable
default cluster enable
Syntax Description
Defaults
The switch is not a command switch.
No cluster name is defined.
The member number is 0 when this is the command switch.
Command Modes
Global configuration
Command History
11.2(8)SA6
This command was first introduced.
12.0(5)XU
The command-switch-member-number variable was added.
Usage Guidelines
This command runs on any command-capable switch that is not part of any cluster. This command fails if a device is already configured as a member of the cluster.
You must name the cluster when you enable the command switch. If the switch is already configured as the command switch, this command changes the cluster name if it is different from the previous name.
Examples
This example shows how to enable the command switch, to name the cluster, and to set the command switch member number to 4.
Switch(config)# cluster enable Engineering-IDF4 4You can verify the previous command by entering the show cluster command in user EXEC mode on the command switch.
Related Commands
Displays the cluster status and a summary of the cluster to which the switch belongs.
cluster holdtime
Use the cluster holdtime global configuration command on the command switch to set the duration in seconds before a switch (either the command or member switch) declares the other switch down after not receiving heartbeat messages. Use the no form of this command to set the duration to the default value.
cluster holdtime holdtime-in-secs
no cluster holdtime
default cluster holdtime
Syntax Description
Defaults
The holdtime is 80 seconds.
Command Modes
Global configuration
Command History
Usage Guidelines
Use this command with the cluster timer global configuration command only on the command switch. The command switch propagates the values to all its cluster members so that the setting is consistent among all switches in the cluster.
The holdtime is typically set as a multiple of the interval timer (cluster timer). For example, it takes (holdtime-in-secs divided by interval-in-secs) number of heartbeat messages to be missed in a row to declare a switch down.
Examples
This example shows how to change the interval timer and the duration on the command switch.
Switch(config)# cluster timer 3Switch(config)# cluster holdtime 30You can verify the previous commands by entering the show cluster command in user EXEC mode.
Related Commands
Displays the cluster status and a summary of the cluster to which the switch belongs.
cluster management-vlan
Use the cluster management-vlan global configuration command on the command switch to change the management VLAN for the entire cluster. Use the no form of this command to change the management VLAN to VLAN 1.
cluster management-vlan n
no cluster management-vlan
default cluster management-vlan
Syntax Description
n
VLAN ID of the new management VLAN. Valid VLAN IDs are from 1 to 1001.
no
Set the management VLAN to VLAN 1.
default
Set the management VLAN to VLAN 1.
Defaults
The default management VLAN is VLAN 1.
Command Modes
Global configuration
Command History
Usage Guidelines
Enter this command only on the command switch. This command changes the management VLAN of the command switch and member switches. Member switches must have either a trunk connection or connection to the new command-switch management VLAN to maintain communication with the command switch.
This command is not written to the configuration file.
Examples
This example shows how to change the management VLAN to VLAN 5 on the entire cluster.
Switch(config)# cluster management-vlan 5You can verify the previous command by entering the show interface vlan number user EXEC command.
Related Commands
Shuts down the management VLAN interface and enables the new management VLAN interface on an individual switch.
cluster member
Use the cluster member global configuration command on the command switch to add members to a cluster. Use the no form of the command to remove members from the cluster.
cluster member [n] mac-address H.H.H [password enable-password]
no cluster member n
default cluster member n
Syntax Description
Defaults
A newly enabled command switch has no associated cluster members.
Command Modes
Global configuration
Command History
Usage Guidelines
Enter this command only on the command switch to add a member to or remove a member from the cluster. If you enter this command on a switch other than the command switch, the switch rejects the command and displays an error message.
You must enter a member number to remove a switch from the cluster. However, you do not need to enter a member number to add a switch to the cluster. The command switch selects the next available member number and assigns it to the switch joining the cluster.
You must enter the enable password of the candidate switch for authentication when it joins the cluster. The password is not saved in the running or startup configuration. After a candidate switch becomes a member of the cluster, its password becomes the same as the command-switch password.
If a switch does not have a configured host name, the command switch appends a member number to the command-switch host name and assigns it to the member switch.
Examples
This example shows how to add a switch as member 2 with MAC address 00E0.1E00.2222 and the password key to a cluster.
Switch(config)# cluster member 2 mac-address 00E0.1E00.2222 password keyThis example shows how to add a switch with MAC address 00E0.1E00.3333 to the cluster. This switch does not have a password. The command switch selects the next available member number and assigns it to the switch joining the cluster.
Switch(config)# cluster member mac-address 00E0.1E00.3333You can verify the previous command by entering the show cluster members command in user EXEC mode on the command switch.
Related Commands
Displays the cluster status and a summary of the cluster to which the switch belongs.
Displays a list of candidate switches.
Displays information about the cluster members.
cluster run
Use the cluster run global configuration command to enable clustering on a switch. Use the no form of this command to disable clustering on a switch.
cluster run
no cluster run
default cluster run
Syntax Description
Defaults
Clustering is enabled on all switches.
Command Modes
Global configuration
Command History
Usage Guidelines
When you enter the no cluster run command on a command switch, the command switch is disabled. Clustering is disabled, and the switch is incapable of becoming a candidate switch.
When you enter the no cluster run command on a member switch, it is removed from the cluster. Clustering is disabled, and the switch is incapable of becoming a candidate switch.
When you enter the no cluster run command on a switch that is not part of a cluster, clustering is disabled on this switch. This switch cannot then become a candidate switch.
Examples
This example shows how to disable clustering on the command switch:
Switch(config)# no cluster runYou can verify the previous command by entering the show cluster command in user EXEC mode.
Related Commands
Displays the cluster status and a summary of the cluster to which the switch belongs.
Displays the cluster status and a summary of the cluster to which the switch belongs.
cluster standby-group
Use the cluster standby-group global configuration command to enable command switch redundancy by binding the Hot Standby Router Protocol (HSRP) standby group to the cluster. Use the no form of this command to unbind the cluster from the HSRP standby group.
cluster standby-group HSRP-group-name
no cluster standby-group
default cluster standby-group
Syntax Description
Defaults
The cluster is not bound to any HSRP group.
Command Modes
Global configuration
Command History
Usage Guidelines
You must enter this command only on the command switch. If you enter it on a member switch, an error message appears.
The command switch propagates the cluster-HSRP binding information to all members. Each member switch stores the binding information in its nonvolatile RAM (NVRAM).
The HSRP group name must be a valid standby group; otherwise, the command exits with an error.
Examples
This example shows how to bind the HSRP group named my_hsrp to the cluster. This command is entered on the command switch.
Switch(config)# cluster standby-group my_hsrpThis example shows the error message when this command is entered on a command switch and the specified HSRP standby group does not exist:
Switch(config)# cluster standby-group my_hsrp%ERROR: Standby group (my_hsrp) doesn't existThis example shows the error message when this command is entered on a member switch.
Switch(config)# cluster standby-group my_hsrp%ERROR: This command runs on a cluster command switchYou can verify the previous commands by entering the show cluster command in user EXEC mode.
Related Commands
standby ip
Enables HSRP on the interface.
Displays the cluster status and a summary of the cluster to which the switch belongs.
show standby
Displays standby group information.
cluster timer
Use the cluster timer global configuration command on the command switch to set the interval in seconds between heartbeat messages. Use the no form of this command to set the interval to the default value.
cluster timer interva