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Webcast-Catalyst9k
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Slow discovery after adding new switch to cluster

I have a cluster with 1 3560 and 5 2950 switch. This is working fine for 2 years now.

For redundancy I added a second 3560 switch which I want to configure as a standby command switch.

After adding the new switch to the cluster discovery of the devices takes about 10 minutes to complete. Also I get an error when configuring the new switch as a standby command switch.

The IOS versions on my switches are:

12.2(20)SE4 - SMI on the existing 3560 switch

12.2(25)SEE4 - IP-BASE on the new switch

12.1(22)EA2 - C2950-I6Q4L2-M on the existing 2950 switches

Do I have to upgrade the IOS on my existing 3560 switch? Or is there another reason for my problem.

Lex

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