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Cisco Catalyst Blade Switch 3130 and 3032 for Dell Software Configuration Guide
OL-12247-04
Chapter 37 Configuring EtherChannels and Link-State Tracking
Configuring Link-State Tracking
•
Do not configure an EtherChannel as a downstream interface.
•
Only interfaces gigabitethernet
n/
0/1 through gigabitethernet
n
/
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:
–
Gigabitethernet
n/
0/17 through gigabitethernet
n/
0/24, where
n
is the stack member number
from 1 to 9
–
Tengigabitethernet
n/
0/1 through tengigabitethernet
n/
0/2, where
n
is the stack member number
from 1 to 9
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:
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.
Command
Purpose
Step 1
configure terminal
Enter global configuration mode.
Step 2
link state track
number
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.
Step 3
interface
interface-id
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.
Step 4
link state group
[
number
] {
upstream
|
downstream
}
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.
Step 5
end
Return to privileged EXEC mode.
Step 6
show running-config
Verify your entries.
Step 7
copy running-config startup-config
(Optional) Save your entries in the configuration file.
