CCIE DC: Troubleshooting Fabricpath

Hey Guys

(Warning: this blog post will simply be a total mess, it's just my own observations and is really only meant to make sense to me)

Here is an error that comes up if you don't have spanning-tree using the same priority with fabricpath:


The devices that are in both the FabricPath domain and CE domain are considered to be edge devices or gateway devices. Edge ports have a FabricPath root guard-like function enabled implicitly. If a superior BPDU is received on an edge port, the port is placed in the Layer 2 Gateway inconsistent state until the condition is cleared.

%STP-2-L2GW_BACKBONE_BLOCK: L2 Gateway Backbone port inconsistency blocking port 
port-channel100 on VLAN0010. 
You will receive this because you will be given a superior BPDU when there is not really one there. 


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