lacp fast-switchover
To disable the wait-while timer in the LACP state machine, use the lacp fast-switchover command in interface
configuration mode. To re-enable the wait-while timer, use the no form of this command.
lacp fast-switchover
no lacp fast-switchover
Syntax Description
This command has no keywords or arguments.
Command Default
The wait-while timer in the LACP state machine is enabled.
Command Modes
Interface configuration (config-if)
Command History
ModificationRelease
This command was introduced.Release 3.9.0
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task
IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator
for assistance.
If you have 1:1 link protection enabled (you set the value of the bundle maximum-active links command to
1) on a bundle with member links running LACP, you can optionally disable the wait-while timer in the LACP
state machine. Disabling this timer causes a bundle member link in standby mode to expedite its normal state
negotiations, thereby enabling a faster switchover from a failed active link to the standby link.
Regardless of the type of switchover you are using, the default IEEE standard-based or the faster proprietary
optimized switchover, the state negotiations of the standby link is expedited. (For more information about the
switchover types, refer to the bundle maximum-active links, on page 578 command.) However, enabling the
lacp fast-switchover command provides a greater benefit if used with the IEEE standard-based switchover.
Examples
The following example shows how to disable the wait-while timer for LACP-enabled member links of
Bundle-Ether 28:
RP/0/RSP0/CPU0:router(config)# interface Bundle-Ether 28
RP/0/RSP0/CPU0:router(config-if)# lacp fast-switchover
The following example shows how to re-enable the wait-while timer for LACP-enabled member links of
Bundle-Ether 28:
RP/0/RSP0/CPU0:router(config)# interface Bundle-Ether 28
RP/0/RSP0/CPU0:router(config-if)# no lacp fast-switchover
Cisco ASR 9000 Series Aggregation Services Router Interface and Hardware Component Command Reference,
Release 5.3.x
596
Link Bundling Commands on the Cisco ASR 9000 Series Router
lacp fast-switchover
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