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Chapter 37
Configuring EtherChannels and Link-State Tracking
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Configuring Link-State Tracking
Beginning in privileged EXEC mode, follow these steps to configure a link-state group and to assign an
interface to a group:
Command
Step 1
configure terminal
Step 2
link state track number
Step 3
interface interface-id
Step 4
link state group [number] {upstream |
downstream}
Step 5
end
Step 6
show running-config
Step 7
copy running-config startup-config
This example shows how to create a link-state group and to configure the interface:
Switch# configure terminal
Switch(config)# link state track 1
Switch(config)# interface port-channel 1
Switch(config-if)# link state group 1 upstream
Switch(config-if)# end
Note
If the interfaces are part of an EtherChannel, you must specify the port channel name as part of the
link-state group, not the individual port members.
To disable a link-state group, use the no link state track number global configuration command.
OL-12247-04
Do not configure an EtherChannel as a downstream interface.
Only interfaces gigabitethernetn/0/1 through gigabitethernetn/0/16, where n is the stack member
number from 1 to 9, can be configured as downstream ports in a specific link-state group.
Only these interfaces can be configured as upstream ports in a specific link-state group:
Gigabitethernetn/0/17 through gigabitethernetn/0/24, where n is the stack member number
–
from 1 to 9
–
Tengigabitethernetn/0/1 through tengigabitethernetn/0/2, where n is the stack member number
from 1 to 9
Cisco Catalyst Blade Switch 3130 and 3032 for Dell Software Configuration Guide
Purpose
Enter global configuration mode.
Create a link-state group, and enable link-state tracking. For
nonstacking-capable switches, the group number can be 1 to 2.
For stacking-capable switches, the group number can be 1 to 10.
The default is 1.
Specify a physical interface or range of interfaces to configure,
and enter interface configuration mode.
Valid interfaces include switch ports in access or trunk mode
(IEEE 802.1q), routed ports, or multiple ports bundled into an
EtherChannel interface (static or LACP), that is also in trunk
mode.
Specify a link-state group, and configure the interface as either
an upstream or downstream interface in the group. For
nonstacking-capable switches, the group number can be 1 to 2.
For stacking-capable switches, the group number can be 1 to 10.
The default is 1.
Return to privileged EXEC mode.
Verify your entries.
(Optional) Save your entries in the configuration file.
Configuring Link-State Tracking
37-25
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