Hi everyone.. i have some trouble about those two technics. Sometimes i confused them.
What is the reason about using UDLD on a STP blocking port (port has been blocked after STP convergence) to detect the unidirectionality of the link and send errdisable msg?
I guess, the portis unidirectional since this port is on the blocking state !!!
So when it stopped receiving BPDU's, it must just get into the loop inconsistent state instead using UDLD.
Actually i don't really understand the purpose of using UDLD in the case of a blocking port not receiving BPDU's