Symptom

Section under the title "Vlans in spanning tree forwarding state and not pruned" in output of sh int trunk on n5600/6k is always empty. STP is forwarding and pings work but nothing appears under the mentioned section. This is misleading during troubleshooting as one might end up thinking vlans in question are pruned. cglcore01# sh int po1 trunk -------------------------------------------------------------------------------- Port Native Status Port Vlan Channel -------------------------------------------------------------------------------- Po1 1 trunking -- -------------------------------------------------------------------------------- Port Vlans Allowed on Trunk -------------------------------------------------------------------------------- Po1 1,10,16-17,20,30,100-102,267-268,300,401,404,666,1012,1022,1025-10 26,1100,1120,1632,2020 -------------------------------------------------------------------------------- Port Vlans Err-disabled on Trunk -------------------------------------------------------------------------------- Po1 none -------------------------------------------------------------------------------- Port STP Forwarding -------------------------------------------------------------------------------- Po1 1,10,16-17,20,30,100-102,267-268,300,401,404,666,1012,1022,1025-10 26,1100,1120,1632,2020 -------------------------------------------------------------------------------- Port Vlans in spanning tree forwarding state and not pruned -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Port Vlans Forwarding on FabricPath --------------------------------------------------------------------------------

Conditions

NA

Workaround

Further Problem Description