MS 425 stack reliability issues

[ciph3r]

Hello, 

We have a 425-32 stack that experience and odd failure and I was curious if anyone else has ran across something similar. 

2x MS-425-32 switches as "cores"

L3 being used

DHCP being used

OSPF being used

9215 Frame Size being used (VSAN traffic)

Agg Ports used for servers/distro switches (ms 250s)

12.28

Here's what happens - Randomly one of the members goes offline. The ports all become inactive and the LED turns orange. This is resolved by a simple hard reboot. Both have done this, however, it would appear lately its only SW1. 

There is no set interval for the failure as it can be 4 days or 2 months. 

Support believes its ipv6 MTU commands from a upstream ISP. We are working to filter v6 as there's no way to disable/filter it on the switch. 

[PhilipDAth]

I've used the MS425-16's quite a bit and never had an issue.

Did you try accessing the local status page when it was in the "orange" state to see what the switch report?

[ciph3r]

Yes. All the ports are dead including mgmt when its in this "zombie" state. 

[PhilipDAth]

That is most likely to be a firmware issue.  I'd try a different firmware version.

[ciph3r]

I thought the same also. The issue has followed them from 11.xx now over to 12.xx. Here's hoping 14.xx does something different.