I have two routers, Router-A directly connected Router-B if I given shutdown to an interface in Router-A which is going to connect Router-B, now what will happen, if I issue show interface on Router-B whats output would I see on the interface that is connected Router-A.
If these routers are connected directly by a back-to-back DTE-DCE cable (just like we do in the lab), when you shotdown the interface in one end, the other end will goto down/down state because it cannot detect DCD carrier and layer2 keepalive message form the other end.
If these routers are connected by a pairs of DSU/CSUs (like in the real life senario), shutting down the interface in one end will cause the other end goto up/down state because it will not receive layer2 keepalive from the other end, but it still can receive the DCD signal from CSU/DSU.
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Introduction The purpose of this document is to demonstrate the Open
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