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)
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.