Cisco Catalyst 4500 Series Software Configuration Manual page 261

Chapter 5 Configuring Virtual Switching Systems
To configure the VSL port channels, perform this task on Switch 1:
The port channels 10 and 20 mentioned in the configuration steps below are exemplary only. You can
Note
configure any port channel number from 1-64 for VSL port channel.
Command
Step 1
Switch-1(config)# interface port-channel 10
Step 2
Switch-1(config)# switchport
Step 3
Switch-1(config-if)# switch virtual link 1
Step 4
Switch-1(config-if)# no shutdown
Step 5
Switch-1(config-if)# exit
Perform the following task on Switch 2:
Command
Step 1
Switch-2(config)# interface port-channel 20
Step 2
Switch-1(config)# switchport
Step 3
Switch-2(config-if)# switch virtual link 2
Step 4
Switch-2(config-if)# no shutdown
Step 5
Switch-2(config-if)# exit
You must add the VSL physical ports to the port channel. In the following example, interfaces 10-Gigabit
Ethernet 3/1 and 3/2 on Switch 1 are connected to interfaces 10-Gigabit Ethernet 5/2 and 5/3 on
Switch 2.
For line redundancy, we recommend configuring at least two ports per switch for the VSL. For module
Tip
redundancy, the two ports can be on different switching modules in each chassis.
To configure the VSL ports, perform this task on Switch 1:
Command
Step 1
Switch-1(config)# interface range
tengigabitethernet 3/1-2
Step 2
Switch-1(config-if)# channel-group 10 mode on
Note 1G ports, which are converted from 10G ports using a connector, are not supported for VSL. This
impacts Sup7-E and Sup7L-E ports.
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Purpose
Configures port channel 10 on Switch 1.
Convert to a Layer 2 port.
Associates Switch 1 as owner of port channel 10.
Activates the port channel.
Exits interface configuration.
Purpose
Configures port channel 20 on Switch 2.
Convert to a Layer 2 port.
Associates Switch 2 as owner of port channel 20.
Activates the port channel.
Exits interface configuration mode.
Purpose
Enters configuration mode for interface range
tengigabitethernet 3/1-2 on Switch 1.
Adds this interface to channel group 10.
Configuring a VSS
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