I have to verify the correct working of UDLD protocol on copper interfaces.
In my lab two 6509 Catalysts are connected betweeen them with 4x10/100/1000 links, taken form a WS-X6148A-GE-TX port adapter. An Etherchannel is used to combine these links into one logical channel. Autonegotiation is already enabled on the involved interfaces and Rapid Spanning Tree is configured.
I'm planning to enable aggressive UDLD on all these interfaces with the "udld port aggressive" command; I'm looking a way to test if it works. I think the most critical point would be how to simulate an unidirectional link.
Any idea how to implement it? I''ve read on a forum about one possible strategy: to put a non-Cisco L2 device between the two Catalysts and unplug one side after the UDLD peers have been created.
Has anyone tested it successfully? Any other suggestion about alternative ways to have an unidirectional link on copper interfaces?