Cisco Catalyst 250 Series Command Reference

link state group
To configure an interface as a member of a link-state group, use the link state group command in interface
configuration mode. Use the no form of this command to remove an interface from a link-state group.
link state group [number]{downstream| upstream}
no link state group [number]{downstream| upstream}
Syntax Description
(Optional) Specifies the number of the link-state group. The range
is 1 to 2. The default group number is 1.
number
Configures a interface as a downstream interface in the group.downstream
Configures the interface as an upstream interface in the group.upstream
Command Default
No link-state group is configured.
Command Modes
Interface configuration
Command History
ModificationRelease
This command was introduced.Cisco IOS 15.0(2)EX
Usage Guidelines
This command is supported only on the LAN Base image.
Add upstream interfaces to the link-state group before adding downstream interfaces, otherwise, the downstream
interfaces move into error-disable mode. These are the limitations:
•
An interface can be an upstream interface or a downstream interface.
•
An interface can belong to only one link-state group.
•
Only two link-state groups can be configured on a switch.
Examples
This example shows how to configure the interfaces as upstream in group 2:
Switch# configure terminal
Switch(config)# interface range gigabitethernet2/0/1 -2
Switch(config-if-range)# link state group 2 upstream
Switch(config-if-range)# end
Catalyst 2960-X Switch Layer 2 Command Reference, Cisco IOS Release 15.0(2)EX
OL-29043 -01 47
Layer 2 Commands
link state group

Cisco Catalyst 250 Series Specifications

General

Brand	Cisco
Model	Catalyst 250 Series
Category	Switch
Language	English