When a switch is replaced and the original system ID and nickname is used, you must wait
up to 20 minutes for the LSPs with the original system to age out. This is due to
duplicate system ID and nickname detection. However, you can suspend duplicate detection
on the replacement switch so that you can bring the switch into the network
immediately.
About this task
To temporarily disable duplicate detection on the replacement switch, perform the
following steps:
Procedure
-
Copy the configuration file of
the original switch to the replacement switch.
-
Power up the replacement switch
while it is not connected to the SPB network, that is, network-to-network
interface (NNI) ports are not connected.
-
Disable IS-IS on the original
switch, or remove the switch from the network.
-
On the replacement switch, enter
the following Global Configuration command to suspend duplicate detection for up
to 21 minutes:
isis
dup-detection-temp-disable
-
To check the remaining time, use
the show isis
dup-detection-temp-disable remaining time command.
-
Remove the original switch from
the network.
-
Connect the replacement switch
to the network.
