In-consistent state

[nnn_sss22]

Hello

My statement is correct about inconsistent state?

If i do enable Root Guard feature on fa0/4 port then if this port will detect superior BPDUs then it will goes to inconsistent state. inconsistent state same like error disable state but little difference is when inconsistent state will be happen then it will be finished when it will receive higher bpdus. right? 

[Deepak Kumar]

Hi,

Yes, I agree with you (70%) but there are many types of inconsistent in STP as Loop inconsistency, Root inconsistency, EtherChannel inconsistency and Type inconsistency etc. If the port stops receiving inconsistent BPDUs, the *-inconsistent state is cleared and STP changes the port state based on normal STP operation.

For more information, please visit "Troubleshooting Spanning Tree PVID- and Type-Inconsistencies" page.

http://www.cisco.com/c/en/us/support/docs/lan-switching/spanning-tree-protocol/24063-pvid-inconsistency-24063.html

Regards,

Deepak Kumar