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so today we have been able to reproduce the issue by just rebooting switch-223, from the moment we trigger a ring failure making the uplink between switch-223 and switch-224 forwarding again, switch-224 immediately starts learning all mac addresses again in the native vlan 300 unfortunately our packet ...

hi Eduard, thanks for your fast reply!! based on your input I have just verified the entire ring again: we have vtp version 3 configured, double checked and vlan database is ok all port configuration on the ring (gi1/1 and gi1/2) are identical sh int g1/x trunk output is exact the same rep admin ...

Dears, We notice intermittent client (connected on a 5800 port) outages and have been able to trace down the issue to the fact that the client's mac address in the neighbouring switch shows up in the wrong vlan. This vlan happens to be the native vlan on the connection in between both switches. Switches ...