Table Of Contents
System Settings
(Switch > System)
Configuring Global Settings
Editing System Settings
Editing SNMP Settings
Editing Protocol Settings
Configuring CDP Settings
Configuring Cisco IOS Banners
Configuring DHCP Pools
Adding DHCP Pools
Editing DHCP Pools
Deleting DHCP Pools
Viewing DHCP Pool Status
Configuring Time and NTP Broadcasts
Editing Date and Time Settings
Editing NTP Servers and Peers
Configuring Global STP Settings
System Settings
(Switch > System)
The System pages allow you to view and edit global switch settings. For example, you can see what Cisco IOS image the switch is using or what protocols are enabled. You can also configure and apply global Cisco Discovery Protocol (CDP), Cisco IOS banner, clock, Network Time Protocol (NTP), and Spanning Tree Protocol (STP) settings to the switch.
The following topics are described in this section:
•
Configuring Global Settings
•Configuring CDP Settings
•Configuring Cisco IOS Banners
•Configuring DHCP Pools
•Configuring Time and NTP Broadcasts
•Configuring Global STP Settings
Configuring Global Settings
Three types of information shown are on the Global Settings page(see Figure 2-1):
•System—Displays specific switch and Cisco IOS image information.
•SNMP—Displays related SNMP information.
•Protocol—Displays protocols on the device.
Figure 2-1 Global Settings Page
System Pane
The System pane shows the following fields.
Note Fields from Cisco IOS Version to MSFC Flash show information that is normally displayed when the # sh version command is issued from the CLI.
Field
|
Description
|
Hostname
|
Configured network name of the switch.
|
Description
|
Description given to the switch.
|
Domain Name
|
Domain name associated with the switch. An example of a domain name is cisco.com, but your domain name might end with a different suffix, such as .org or .net.
|
Model
|
Model number of device.
|
Default Gateway
|
IP address of the Layer 3 interface that is acting as a router for traffic generated by the switch. It is recommended that you set a default gateway if you are accessing the switch from different networks.
Note If the ip route 0.0.0.0 0.0.0.0 cmd is found in the running configuration, that overrides what is shown in this default gateway field.
|
Up Since
|
Date and time at which the device became operational.
|
Cisco IOS Version
|
Cisco IOS image version the device is running.
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Serial Number
|
Serial number of the switch.
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Config Register
|
Configuration register setting value.
|
Boot Variable
|
Image file from which the switch can boot at startup.
|
System Image File
|
Name of system image file.
|
Processor Memory (RP)
|
Total memory on the switch.
|
Supervisor Flash
|
Total Supervisor Flash memory installed on the switch.
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MSFC Flash
|
Total MSFC Flash memory installed on the switch.
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SNMP Pane
The SNMP pane shows the following fields.
Field
|
Description
|
Enable SNMP
|
Status of SNMP (disabled or enabled).
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Location
|
Physical location of the switch.
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Contact
|
Name of the person responsible for the switch.
|
RO Comm. String
|
Read-only SNMP embedded password for accessing management information.
Note Although Cisco IOS accepts multiple community strings, CVDM-C6500 only shows the last community string entered.
|
RWComm. String
|
Write-only SNMP embedded password for accessing management information.
Note Although Cisco IOS accepts multiple community strings, CVDM-C6500 only shows the last community string entered.
|
Protocols Pane
The Protocols pane shows the following fields.
Field
|
Description
|
HTTP
|
Whether HTTP server is enabled or disabled on the device.
|
Global CDP
|
Whether the ability of the device to advertise its existence to other devices and receive information about other devices on the same LAN is enabled or disabled.
Cisco Discovery Protocol (CDP) is a media- and protocol-independent, device-discovery protocol that runs on all Cisco-manufactured equipment, including routers, access servers, bridges, and switches.
Caution When enabled, CDP can consume switch memory by causing it to send out a high number of discovery packets.
|
DHCP Snooping
|
Whether DHCP snooping is enabled or disabled on the device. This field is displayed only when the Supervisor Engine 720 is installed on the device.
Enable DHCP snooping so that wireless clients, or mobile nodes, can gain access to an untrusted wireless network.
|
Editing System Settings
The System pane displays specific switch and Cisco IOS image information. You can edit the hostname, domain name, and default gateway values.
Step 1 Click Switch at the top of the window, click Global Settings in the left-most pane, and select System from the selector.
Step 2 Click the Edit... button in one of the panes.
Step 3 Edit the appropriate values.
Field
|
Description
|
Hostname
|
Configured network name of the switch.
|
Domain Name
|
Domain name associated with the switch. An example of a domain name is cisco.com, but your domain name might end with a different suffix, such as .org or .net.
|
Model
|
Model number of device.
|
Default Gateway
|
IP address of the Layer 3 interface that is acting as a router for traffic generated by the switch. It is recommended that you set a default gateway if you are accessing the switch from different networks.
Caution If the wrong gateway is entered, the device may disconnect from CVDM-C6500.
|
Step 4 Click OK.
Step 5 Click Deliver at the top of the window. For more information on delivering accumulated CLI commands, see Delivering CLI Commands to the Device.
Editing SNMP Settings
The SNMP pane displays SNMP information. You can edit all values in this pane.
Step 1 Click Switch at the top of the window, click Global Settings in the left-most pane, and select System from the selector.
Step 2 Click Edit....
Step 3 Edit the appropriate values.
GUI Element
|
Action/Description
|
Enable SNMP check box
|
Status of SNMP (disabled or enabled). When editing, select the box to enable SNMP support, and deselect the box to disable SNMP support. SNMP is enabled by default.
|
Location field
|
Physical location of the switch. When editing, enter detailed text that describes where the switch is located. Description is limited to 50 characters.
|
Contact field
|
Name of the person responsible for the switch.
|
RO Comm. String field
|
Read-only SNMP embedded password for accessing management information.
Note Although Cisco IOS accepts multiple community strings, CVDM-C6500 only shows the last community string entered.
|
RWComm. String field
|
Write-only SNMP embedded password for accessing management information.
Note Although Cisco IOS accepts multiple community strings, CVDM-C6500 only shows the last community string entered.
|
Step 4 Click OK.
Step 5 Click Deliver at the top of the window. For more information on delivering accumulated CLI commands, see Delivering CLI Commands to the Device.
Editing Protocol Settings
The Protocol pane displays what protocols are enabled. You can edit all values in this pane.
Step 1 Click Switch at the top of the window, click Global Settings in the left-most pane, and select System from the selector.
Step 2 Click Edit....
Step 3 Edit the appropriate values.
GUI Element
|
Action/Description
|
HTTP check box
|
Enables or disables the HTTP server on the device.
|
Global CDP check box
|
Enables or disables the ability of the device to advertise its existence to other devices and receive information about other devices on the same LAN.
Cisco Discovery Protocol (CDP) is a media- and protocol-independent, device-discovery protocol that runs on all Cisco-manufactured equipment, including routers, access servers, bridges, and switches.
Caution When enabled, CDP can consume switch memory by causing it to send out a high number of discovery packets.
|
DHCP Snooping check box
|
Enables or disables DHCP snooping on the device. This option is available only when the Supervisor Engine 720 is installed on the device.
Enable DHCP snooping so that wireless clients, or mobile nodes, can gain access to an untrusted wireless network.
|
Step 4 Click OK.
Step 5 Click Deliver at the top of the window. For more information on delivering accumulated CLI commands, see Delivering CLI Commands to the Device.
Configuring CDP Settings
Cisco Discovery Protocol (CDP) is primarily used to obtain protocol addresses of neighboring devices and discover the platform of those devices. CDP can also be used to show information about the interfaces your switch uses. CDP is media- and protocol-independent, and runs on all Cisco-manufactured equipment, including routers, bridges, access servers, and switches. Using CDP, a device can advertise its existence to other devices and receive information about other devices on the same LAN.
The CDP page displays CDP settings and CDP Neighbors.
Step 1 Click Switch at the top of the window, click Global Settings in the left-most pane, and select CDP from the selector.
Step 2 Click Edit.... The Edit CDP Settings dialog box appears.
Step 3 Edit the appropriate values.
GUI Element
|
Action
|
CDP Timer (in seconds) field
|
Enter the frequency (in seconds) of transmission of CDP updates.
|
CDP Hold Time field
|
Enter the amount of time (in seconds) a receiving device should hold the information sent by your device before discarding it.
|
Send CDP V2 Advertisements check box
|
Select to enable CDP V2 advertisements. CDP Version 2 (CDPv2) is the most recent release of the protocol and provides more intelligent device tracking features.
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Step 4 Click OK.
Step 5 Click Deliver at the top of the window. For more information on delivering accumulated CLI commands, see Delivering CLI Commands to the Device.
The CDP Neighbors table shows all CDP neighbors connected to the switch. The following table describes the details displayed.
Table 2-1 CDP Neighbors
Column
|
Description
|
Device ID
|
Configured ID (name), MAC address, or serial number of the neighbor device.
|
Local Interface
|
Number and type of the local interface (port).
|
Hold Time
|
The remaining amount of time, in seconds, the current device will hold the CDP advertisement from a transmitting router before discarding it.
|
Capability
|
Capability code discovered on the device. This is the type of the device listed in the CDP Neighbors table. Possible values are:
•Router (R)
•Transparent bridge (T)
•Source-routing bridge (B)
•Switch (S)
•Host (H)
•IGMP device (I)
•Repeater (r)
|
Platform
|
Product number of the device.
|
Port ID
|
Protocol and port number of the device.
|
Configuring Cisco IOS Banners
The Banner page shows Cisco IOS banner information. Banners are informational messages that can be displayed to users.
Step 1 Click Switch at the top of the window, click Global Settings in the left-most pane, and select Banner from the selector.
Step 2 Click Edit.... The Edit Banners window appears.
Step 3 Enter the banner information.
Banner Type
|
Description
|
EXEC Banner
|
Configures the system to display a banner whenever an EXEC process is initiated. For example, this banner will be displayed to users who are connected to the system through Telnet, after they have entered their username and password but before the user EXEC mode prompt is displayed.
|
Login Banner
|
Configures the system to display a banner before the username and password login prompts. This banner is displayed after the Message-of-the-Day banner appears and before the login prompts.
|
Incoming Terminal Line Banner
|
Configures the system to display a banner when there is an incoming connection to a terminal line from a host on the network. This banner is useful for providing instructions to users of these types of connections.
|
Message-of-the-Day Banner
|
Configures the system to display a Message-of-the-Day banner. This banner is displayed at login and is useful for sending messages that affect all network users (such as impending system shutdowns).
|
Step 4 Click OK.
Step 5 Click Deliver at the top of the window. For more information on delivering accumulated CLI commands, see Delivering CLI Commands to the Device.
Configuring DHCP Pools
Dynamic Host Configuration Protocol (DHCP) provides a mechanism for allocating IP addresses dynamically so that addresses can be reused when hosts no longer need them. DHCP also consists of a protocol for delivering host-specific configuration parameters from a DHCP server to a host.
A DHCP address pool contains the range of available IP addresses that the DHCP server may assign to DHCP clients. You can visew, add, and edit the DHCP pools in your network so that wireless clients registered with the WLSM card can be assigned an IP address.
Click Switch at the top of the window, click Global Settings in the left-most pane, and select DHCP from the selector to display the main DHCP Pools page.
The following information is displayed.
GUI Element
|
Description
|
DHCP Pools pane
|
Pool Name column
|
Name of the DHCP pool.
|
Network column
|
IP network from which the DHCP server allocates IP addresses. This network defines the pool of IP addresses available within the DHCP pool.
|
Network Mask column
|
Subnet mask address for the DHCP pool.
|
Interface Name column
|
Interface associated with the DHCP pool. DHCP clients entering this interface are assigned IP addresses from the associated DHCP pool.
|
Details Pane
|
DHCP Pool name field
|
Name of the DHCP pool
|
Network field
|
IP network from which the DHCP server allocates IP addresses. This network defines the pool of IP addresses available within this DHCP pool.
|
Network Mask field
|
Subnet mask address for this DHCP pool.
|
Domain Name field
|
Domain name associated with the DHCP client. An example of a domain name is cisco.com, but your domain name might end with a different suffix, such as .org or .net.
|
Default Routers field
|
Addresses of the default gateways for this DHCP pool.
|
DNS Servers field
|
Domain Name System (DNS) IP servers available to the DHCP client.
|
WINS Servers field
|
Windows Internet Naming Service (WINS) servers available to the DHCP client.
|
Lease Time field
|
The date and time that the IP address assigned by the DCHP server expires.
|
Executable IP Addresses pane
|
IP addresses excluded from the pool of available IP addresses. These excluded IP addresses are not allocated to DHCP clients.
The list of excluded IP addresses can be a single IP address or a range of IP addresses.
|
From this page, you can do the following:
•Add a DHCP pool. See Adding DHCP Pools.
•Edit a DHCP pool. See Editing DHCP Pools.
•View status information for a DHCP pool. See Viewing DHCP Pool Status.
•Delete a DHCP Pool. See Deleting DHCP Pools.
Adding DHCP Pools
Step 1 Click Switch at the top of the window, click Global Settings in the left-most pane, and select DHCP from the selector.
Step 2 Click the Add button in the DHCP Pools pane. The Add DHCP Pool dialog box appears.
Step 3 Edit the appropriate values.
GUI Element
|
Action/Description
|
Pool Name field
|
Enter the name of the DHCP pool.
|
Network field
|
Enter the IP network number for the DHCP pool.
|
Mask list
|
Select, from the list, the subnet mask address for the DHCP pool or enter an address in the field.
|
DHCP Options pane
|
Domain name field
|
Enter the domain name associated with the DHCP client. An example of a domain name is cisco.com, but your domain name might end with a different suffix, such as .org or .net.
|
Exclude Addresses tab
|
Enter the IP addresses excluded from the pool of available IP addresses. These excluded IP addresses are not allocated to DHCP clients.
To exclude IP addresses from the pool, click Add.... The Add Excluded IP Addresses dialog box appears. See the Add Excluded IP Addresses Dialog Box for more information.
You can also delete an excluded IP address by selecting the IP address from the table and clicking Delete.
|
Default Routers tab
|
Enter the IP address of the default router to which the DCHP client is sending packets.
To add an IP address, click Add.... The Add Default Router dialog box appears. See the Add Default Router Dialog Box for more information.
You can also delete an IP address by selecting the IP address from the table and clicking Delete.
|
DNS Servers tab
|
Enter the Domain Name System (DNS) IP servers available to the DHCP client.
To add a DNS server, click Add.... The Add DNS Server dialog box appears. See the Add DNS Server Dialog Box for more information.
You can also delete a DNS server by selecting the IP address from the table and clicking Delete.
|
WINS Servers tab
|
Enter the Windows Internet Naming Service (WINS) server available to the DHCP client.
To add a WINS server, click Add.... The Add WINS Server dialog box appears. See the Add WINS Server Dialog Box for more information.
You can also delete a WINS server by selecting the IP address from the table and clicking Delete.
|
Lease Time tab
|
The amount of time that the IP address assigned by the DCHP server is valid. Select one of the following:
•Never Expires radio button—select this option if you do not want the IP address lease to expire.
•User Defined radio button—select this option to define the amount of time for the lease to expire. Then, specify the time for which the IP address is valid in the Hours: Minutes fields.
|
Step 4 Click OK.
Step 5 Click Deliver at the top of the window. For more information on delivering accumulated CLI commands, see Delivering CLI Commands to the Device.
Add Excluded IP Addresses Dialog Box
GUI Element
|
Action/Description
|
Single IP Address radio button
|
Select this radio button to exclude only one IP address from the DHCP pool. Then, in the IP Address field, enter the IP address you want to exclude.
|
Range Address radio button
|
Select this radio button to exclude a range of IP addresses from the DHCP pool. Then do the following:
•In the Lower IP Address field, enter the IP address of the lower boundary of addresses to exclude.
•In the Higher IP Address field, enter the IP address of the upper boundary of addresses to exclude.
|
Add Default Router Dialog Box
GUI Element
|
Action/Description
|
IP Address
|
Enter the IP address of the default router.
|
Add DNS Server Dialog Box
GUI Element
|
Action/Description
|
IP Address
|
Enter the IP address of the DNS server.
|
Add WINS Server Dialog Box
GUI Element
|
Action/Description
|
IP Address
|
Enter the IP address of the WINS server.
|
Editing DHCP Pools
Step 1 Click Switch at the top of the window, click Global Settings in the left-most pane, and select DHCP from the selector.
Step 2 Click the Edit button in the DHCP Pools pane. The Edit DHCP Pool dialog box appears.
Step 3 Edit the appropriate values.
GUI Element
|
Action/Description
|
Pool Name field
|
Enter the name of the DHCP pool.
|
Network field
|
Enter the IP network number for the DHCP pool.
|
Subnet Mask list
|
Select, from the list, the subnet mask address for the DHCP pool or enter an address in the field.
|
DHCP Options pane
|
Domain name field
|
Enter the domain name associated with the DHCP client. An example of a domain name is cisco.com, but your domain name might end with a different suffix, such as .org or .net.
|
Excluded Addresses tab
|
Enter the IP addresses excluded from the pool of available IP addresses. These excluded IP addresses are not allocated to DHCP clients.
To exclude IP addresses from the pool, click Add.... The Add Excluded IP Addresses dialog box appears. See Add Excluded IP Addresses Dialog Box for more information.
You can also delete an excluded IP address by selecting the IP address from the table and clicking Delete.
|
Default Routers tab
|
Enter the IP address of the default router to which the DCHP client is sending packets.
To add an IP address, click Add.... The Add Default Router dialog box appears. See the Add Default Router Dialog Box for more information.
You can also delete an IP address by selecting the IP address from the table and clicking Delete.
|
DNS Servers tab
|
Enter the Domain Name System (DNS) IP servers available to the DHCP client.
To add a DNS server, click Add.... The Add DNS Server dialog box appears. See the Add DNS Server Dialog Box for more information.
You can also delete a DNS server by selecting the IP address from the table and clicking Delete.
|
WINS Servers tab
|
Enter the Windows Internet Naming Service (WINS) server available to the DHCP client.
To add a WINS server, click Add.... The Add WINS Server dialog box appears. See Add WINS Server Dialog Box for more information.
You can also delete a WINS server by selecting the IP address from the table and clicking Delete.
|
Lease time tab
|
The amount of time that the IP address assigned by the DCHP server is valid. Select one of the following:
•Never Expires radio button—select this option if you do not want the IP address lease to expire.
•User Defined radio button—select this option to define the amount of time for the lease to expire. Then, specify the time for which the IP address is valid in the Hours: Minutes fields.
|
Step 4 Click OK.
Step 5 Click Deliver at the top of the window. For more information on delivering accumulated CLI commands, see Delivering CLI Commands to the Device.
Deleting DHCP Pools
Step 1 Click Switch at the top of the window, click Global Settings in the left-most pane, and select DHCP from the selector.
Step 2 Select the DCHP pool from the DHCP Pools pane that you want to delete.
Step 3 Click Delete.
Viewing DHCP Pool Status
Step 1 Click Switch at the top of the window, click Global Settings in the left-most pane, and select DHCP from the selector.
Step 2 Select a DCHP pool from the DHCP Pools pane and click the Pool Status... button. The DHCP Pool Status dialog box appears and displays a table with the following information.
Column
|
Description
|
IP Address
|
IP address allocated to the DHCP pool.
|
Client ID
|
MAC address of the DCHP client to which this IP address is allocated.
|
Lease Expiration
|
Time and date that the allocated IP address expires.
|
Configuring Time and NTP Broadcasts
You can configure date, time, and Network Time Protocol (NTP) settings using the Clock page. The Clock page shows system time zone, clock, and calendar information. It also shows NTP Servers and Peers information. NTP sends and receives unicast packets with peers, by default. However, broadcasts can be used if several NTP peers are located on a common network. For clock and NTP configuration guidelines, see the relevant section in Catalyst 6500 Family IOS Software Configuration Guide.
Editing Date and Time Settings
Step 1 Click Switch at the top of the window, click Global Settings in the left-most pane, and select Clock from the selector.
Step 2 Click Edit... from the Date/Time pane.
Step 3 Edit the appropriate values.
GUI Element
|
Action
|
Update Calendar using Network Time Protocol
|
Select this option if you want NTP to update the calendar. NTP is designed to time-synchronize a network of machines. An NTP network usually gets its time from an authoritative time source, such as a radio clock or an atomic clock attached to a time server. NTP then distributes this time across the network.
NTP is extremely efficient: no more than one packet per minute is necessary to synchronize two machines to within a millisecond of one another.
|
Month
|
Enter the numeric month.
|
Day
|
Enter the numeric day.
|
Year
|
Enter the year as a 4-digit number.
|
Hour
|
Enter the current hour.
|
Minute
|
Enter the current minutes.
|
Second
|
Enter the current seconds.
|
Time Zone ID
|
Enter the local time zone to be displayed. The time zone is set to the abbreviated zone name (EST, PST, CDT). This name is only used for display purposes and can be any common zone name. The actual displayed time is defined by an offset in hours and minutes from Greenwich Mean Time .
|
Hours Offset from GMT
|
Enter the offset in hours from Greenwich Mean Time.
|
Minutes Offset from GMT
|
Enter the offset in minutes from Greenwich mean time.
|
Enable Daylight Saving Time
|
Select this option to enable Daylight Saving Time.
|
DST Time Zone ID
|
Enter the name of the zone (using from 1 to 32 characters) to be displayed when Daylight Saving Time time is in effect.
|
Step 4 Click Deliver to send the accumulated CLI commands to the device.
Editing NTP Servers and Peers
A system's NTP association can be a peer association (the system will either synchronize to another system or allow another system to synchronize to it), or it can be a server association (only this system synchronizes to the other system, and not the other way around).
If you want to form an NTP association with another system:
Step 1 Click Add from the NTP Servers or NTP Peers pane.
Step 2 Enter the IP address of the system you want to associate to.
Step 3 Click Deliver at the top of the window. For more information on delivering accumulated CLI commands, see Delivering CLI Commands to the Device.
To edit the IP address or delete a system association:
Step 1 Select the IP address row you want to edit from the NTP Servers or NTP Peers pane.
Step 2 Do one of the following:
•Click Edit to edit the IP address.
–Enter IP address.
–Click Deliver at the top of the window. For more information on delivering accumulated CLI commands, see Delivering CLI Commands to the Device.
•Click Delete to remove the system association.
Configuring Global STP Settings
STP is a Layer 2 link management protocol that provides path redundancy while preventing undesirable loops in the network. For a Layer 2 Ethernet network to function properly, only one active path can exist between any two stations.
When you create fault-tolerant internetworks, you must have a loop-free path between all nodes in a network. The STP algorithm calculates the best loop-free path throughout a switched Layer 2 network.
Step 1 Click Switch at the top of the window, click Global Settings in the left-most pane, and select Spanning Tree from the selector.
Step 2 Select Edit.... The Edit Global STP Settings dialog box appears.
Step 3 Select check boxes to enable appropriate options. For more information on STP options, see the Catalyst 6500 Family IOS Software Configuration Guide.
GUI Element
|
Description/Action
|
STP Mode list
|
Spanning-Tree Protocol (STP) is a Layer 2 (L2) protocol designed to run on bridges and switches. The main purpose of STP is to ensure that you do not create loops when you have redundant paths in your network. Changing STP modes may take some time.
Caution If the device is configured incorrectly, you may lose connectivity when changing STP modes.
Note When MST is enabled, CVDM-C6500 sets this mode, but STP configuration options are disabled.
Select an STP Mode from the list:
•PVST—Per-VLAN Spanning Tree (PVST) maintains a spanning tree instance for each VLAN configured in the network. PVST uses ISL trunking and allows a VLAN trunk to be forwarded for some VLANs while blocking for other VLANs. Because PVST treats each VLAN as a separate network, it can load-balance traffic by forwarding some VLANs on one trunk and other VLANs on another trunk without causing a spanning tree loop.
•Rapid PVST—Rapid Per-VLAN Spanning Tree provides faster spanning tree convergence after a topology change. The standard configuration also includes features equivalent to Cisco PortFast, UplinkFast, and BackboneFast, for faster network reconvergence.
•MST—Multiple Spanning Tree allows several VLANs to be mapped to a reduced number of spanning tree instances.
|
Ether Channel Guard check box
|
Detects a misconfigured EtherChannel where interfaces on the Catalyst 6500 series switch are configured as an EtherChannel.
|
Extended System ID check box
|
Allows extended VLANs. For more information on extended VLANs, see the relevant section in Catalyst 6500 Family IOS Software Configuration Guide.
Note If extended VLANs already exist, you cannot disable this option.
|
PortFast check box
|
Causes a port to enter the spanning tree forwarding state immediately, bypassing the listening and learning states.
|
BPDU Guard check box
|
Causes the spanning tree to shut down PortFast-configured interfaces that receive BPDUs, instead of putting them into the spanning-tree blocking state.
|
BPDU Filter check box
|
Ports enabled with BPDU filter will not send BPDUs and will drop all received BPDUs.
Caution You could cause loops in the bridged network if you use this feature improperly.
|
Loop Guard check box
|
Verifies whether if a root port or an alternate root port is receiving BPDUs. If the port is not receiving BPDUs, the loop guard feature puts the port into an inconsistent state until it starts receiving BPDUs again.
|
UplinkFast check box
|
Increases the path cost of all ports on the switch, making it unlikely that the switch will become the root switch.
Note When enabled, UplinkFast affects all VLANs on the switch.
|
BackboneFast check box
|
Initiated when a root port or blocked port on a switch receives inferior BPDUs from its designated bridge.
|
UDLD check box
|
Unidirectional Link Detection (UDLD) is a Layer 2 protocol that works with Layer 1 mechanisms to determine the physical status of a link.
|
VLAN Alloc. Policy Ascending check box
|
Allocates VLANs in ascending or descending order.
|
VLAN dot1q Tagging Native check box
|
Configures a switch to forward all frames from 802.1Q trunks with 802.1Q tagging. This includes traffic in the native VLAN (default VLAN), and admits only 802.1Q tagged frames on 802.1Q trunks, dropping any untagged traffic, including untagged traffic in the native VLAN.
You can enter this command on any switch that needs to support 802.1Q tunneling with 802.1Q trunks. The equivalent CLI command is # set dot1q-all-tagged enable.
For more information, see the relevant section in the Catalyst 6500 Family IOS Software Configuration Guide.
|
Step 4 Click Deliver to send the accumulated CLI commands to the device. Changes are applied immediately.
