Cisco Cisco Gigabit Ethernet Switch Module (CGESM) for HP Technical References
2-141
Cisco Gigabit Ethernet Switch Module for the HP p-Class BladeSystem Command Reference Guide
380265-002
Chapter 2 CGESM Switch Cisco IOS Commands
link state group
link state group
Use the link state group interface configuration command to configure a port as a member of a link-state
group. Use the no form of this command to remove the port from the link-state group.
group. Use the no form of this command to remove the port from the link-state group.
link state group [number] {upstream | downstream}
no link state group [number] {upstream | downstream}
Syntax Description
Defaults
The default group is group 1.
Command Modes
Interface configuration
Command History
Usage Guidelines
Use the link state group interface configuration command to configure a port as an upstream or
downstream port for a specific link-state group. If the group number is omitted, the default group is
assumed.
downstream port for a specific link-state group. If the group number is omitted, the default group is
assumed.
An interface can be an aggregation of ports (an EtherChannel) or a single physical port in access or trunk
mode. Each downstream interface can be associated with one or more upstream interfaces. Upstream
interfaces can be bundled, and each downstream interface can be associated with a single group
consisting of multiple upstream interfaces. These groups are referred to as link-state groups.
mode. Each downstream interface can be associated with one or more upstream interfaces. Upstream
interfaces can be bundled, and each downstream interface can be associated with a single group
consisting of multiple upstream interfaces. These groups are referred to as link-state groups.
The link state of the downstream interfaces depend on the link state of the upstream interfaces in the
associated link-state group. If all of the upstream interfaces in a link-state group are in a link-down state,
the associated downstream interfaces are forced into a link-down state. If any one of the upstream
interfaces in the link-state group is in a link-up state, the associated downstream interfaces are allowed
to change to, or remain in, a link-up state.
associated link-state group. If all of the upstream interfaces in a link-state group are in a link-down state,
the associated downstream interfaces are forced into a link-down state. If any one of the upstream
interfaces in the link-state group is in a link-up state, the associated downstream interfaces are allowed
to change to, or remain in, a link-up state.
Follow these guidelines to avoid configuration problems:
•
Do not configure an internal management module interface (gi0/17 or gi0/18) as a member of a
link-state group.
link-state group.
•
Do not configure an EtherChannel as a downstream interface.
•
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.
interface in the same or a different link-state group. The reverse is also true.
•
You can configure only two link-state groups per switch.
number
(Optional) Specify the link-state group number. The default is 1.
upstream
Configure a port as an upstream port for a specific link-state group.
downstream
Configure a port as a downstream port for a specific link-state group.
Release
Modification
12.2(25)SED
This command was introduced.