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Webcast-Catalyst9k
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3750X Rolling stack upgrade Ip connectivity

Currently have two 3750x stacked with 15.1.SE1 code. When doing a rolling stack upgrade, we lose ip connectivity to the VLAN layer 3 interfaces on the stack for about 20-40 seconds after the 1st switch restores and takes over master. Stack has dual trunks(one to each switch) to a router with EIGRP. Is this normal behavior during rsu upgrade?

One note...in the logs after the reload, I can see where the VLAN interfaces go down and recover. Code is doing a micro code/firmware update, not sure if that has any effect.

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