Layer 2 Trunk Failover Configuration Guidelines; Configuring Layer 2 Trunk Failover - Cisco 3020 - Catalyst Blade Switch Configuration Manual

Chapter 28 Configuring EtherChannels and Layer 2 Trunk Failover

Layer 2 Trunk Failover Configuration Guidelines

Follow these guidelines to avoid configuration problems:
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Configuring Layer 2 Trunk Failover

Beginning in privileged EXEC mode, follow these steps to configure a link-state group and to assign an
interface to a group:
This example shows how to create a link-state group and configure the interfaces:
Switch# configure terminal
Switch(config)# link state track 1
Switch(config)# interface range gigabitethernet0/21 - 22
Switch(config-if)# link state group 1 upstream
Switch(config-if)# interface gigabitethernet0/1
Switch(config-if)# link state group 1 downstream
Switch(config-if)# interface gigabitethernet0/3
Switch(config-if)# link state group 1 downstream
Switch(config-if)# interface gigabitethernet0/5
Switch(config-if)# link state group 1 downstream
Switch(config-if)# end
If the interfaces are part of an EtherChannel, you must specify the port channel name as part of the
Note
link-state group, not the individual port members.
This example shows how to create a link-state group using ports in an EtherChannel:
Switch# configure terminal
Switch(config)# link state track 1
Switch(config)# interface P01
Switch(config-if)# link state group 1 upstream
Switch(config-if-range)# interface range gigabitethernet0/1, gigabitethernet0/3,
gigabitethernet0/5
Switch(config-if)# link state group 1 downstream
Switch(config-if)# end
To disable a link-state group, use the no link state track number global configuration command.
OL-8915-01
Do not configure a cross-connect interface (gi0/23 or gi0/24) as a member of a link-state
group.
Do not configure an EtherChannel as a downstream interface.
Only interfaces gi0/1 through gi0/16 can be configured as downstream ports in a specific link-state
group.
Only interfaces gi0/17 through gi0/24 can be configured as upstream ports in a specific link-state
group.
An interface that is defined as an upstream interface cannot also be defined as a downstream
interface in the same or a different link-state group. The reverse is also true.
An interface cannot be a member of more than one link-state group.
You can configure only two link-state groups per switch.
Cisco Catalyst Blade Switch 3020 for HP Software Configuration Guide
Understanding Layer 2 Trunk Failover
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