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.
When you delay the processing of hardware link down notifications, the higher layer routing protocols are
unaware of a link until that link is stable.
If the carrier-delay down milliseconds command is configured on a physical link that fails and cannot be
recovered, link down detection is increased, and it may take longer for the routing protocols to re-route traffic
around the failed link.
In the case of very small interface state flaps, running the carrier-delay down milliseconds command prevents
the routing protocols from experiencing a route flap.
Enter the show interface command to see the current state of the carrier-delay operation for an interface.
No carrier-delay information is displayed if carrier-delay has not been configured on an interface.
Note
Task ID
OperationsTask ID
read, writeinterface
Examples
This example shows how to delay the processing of hardware link down notifications:
RP/0/RSP0/CPU0:router(config-if)# carrier-delay down 10
The following example shows how to delay the processing of hardware link up and down notifications:
RP/0/RSP0/CPU0:router(config-if)# carrier-delay up 100 down 100
Related Commands
DescriptionCommand
Turns on event dampening.dampening, on page 499
Cisco ASR 9000 Series Aggregation Services Router Interface and Hardware Component Command Reference,
Release 5.3.x
78
Ethernet Interface Commands on the Cisco ASR 9000 Series Router
carrier-delay
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