Let's say you want to run frame relay or hdlc using serial interfaces on two routers, but don't have any ip addresses to waste, you can use the ip addresses of the ethernet or token ring interfaces as the ip addresses for your serial interfaces. This stuff is easy to look up on Cisco's web site. so check for configs there. A simple example would be something like:
int s0 ip unnumbered e0 You are telling the router to use e0's address for the serial link. Now one would think that this would not work, because the ethernet interfaces on two routers usually will not have ip addresses in the same subnet (unless you are set them up on the same subnet in a practice lab). Somehow it all works, though. I need to play with it some more. I used ip unnumbered when I was trying to get ip ospf demand-circuit to work where the isdn link was a backup to a frame relay link. (Yes, this is apparently similar to a notorious ccbootcamp lab, but I didn't know that until I started noticing people posting to the lab list answers to questions I was having.) Thomas Larus "birdy"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Dear all > > can anyone tell me what is IP unnumbered ? > > Regards, birdy Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=21849&t=21794 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
