Richard, not that I doubt you ( because I have never tried this myself ) but would you mind posting the relevant configs and the results of the ping to the list so we all can see? simple cut and paste is fine.
Knowing that it works, lets see if intellectually speaking we can come up with a good explanation. 1) RFC 1812 talks about unnumbered interfaces. Without looking it up, IIRC, the unnumbered link lives and dies by using a router i.d ( RID ) to identify the end points. 2) a ways back, ( and I forget the context ) there was a discussion about multiple interfaces having the exact same ip address and how was this possible. The answer "seemed" to be ip unnumbered. again, IIRC, someone was able to provide a show ip int brief or some other output that indeed did show several interfaces with identical ip addresses. Dan Cotts - for some reason I recall you being part of that discussion. do you remember? 3) those things having been said, then one rational conclusion is that ip unnumbered associates a particular ip with the unnumbered link, and that a monitoring tool could indeed ping the interface. I might want to know a bit more about the order of things. IIRC ( and this is taking a bit on faith ) an interface in shutdown mode doesn't register as an ip endpoint. maybe if the unnumbered is configured while the interface is up, and then later if it is shutdown, the unnumbered config remains in place? Chuck ""richard dumoulin"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Peter , > > The book says clearly that the interface is pingable. Even more, I have > tried it and it really works. I just took two routers connected by > back_to_back serial cables with IP unnumbered configured on both. When I > unplugg the Lan interface of one them, this router is still reachable by the > IP address. > > Regards. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=49379&t=49347 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
