Hi all, I was wondering how Cisco routers could detect the directly connected interface at the other end is shutdown!
there are two general possibility on my point of view: 1- the other device is sending special information before shutting down the interface. 2- there are some method of polling which is done periodically and based on the answer, the router detect the interface is up or no! As Cisco router is not able to detect the interface shutdown on the other side when connected to some other device, not Cisco like unix systems, it seems, it has some sort of protocol for detection which is number 2 of above guesses! could you please help me on this? Or provide me a scenario witch I could find out if any packet is transmitted between Cisco routers to inform the interface shutdown! _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
