x670-x440 Vrrp change master to backup, not routing

[Network_Operat1]

We have 2 stacks both stacks are 1 x460 and 1x440 and an ISC connecting. When we try to fail over to the backup, the backup takes over as master but routing of the layer 3 vlans is not happening. FW Version we are using is 21.1.5.2

Any help or ideas much will be appreciated.

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[Network_Operat1]

The backup is basically the same construct as the Master, comprised of 1 x460 and 1x440. X460 are configured with vrrp configurations

[davidj_cogliane]

If you run show vrrp detail on each stack does everything look consistent?

[davidj_cogliane]

Yes, the ISC runs between the 460 and the 440.

[Network_Operat1]

ok but did you seen the Picture i attached the way its constructed ?

[davidj_cogliane]

So its not failing over to the backup switch, just the backup stack which still has the 460 as master. That makes things more interesting.

I would still recommend replacing the 440 so that you have a backup if one of the 460s goes down.