OSPF uses a router ID in it's advertisements to other neighbors. The router id is simply the highest IP address of a loopback if you have them configured and if not then the highest IP of an active interface. I don't think it's a reachability type question - the neighbors certainly need to be able to talk to each other and learn about the topology - but the addresses they use to send traffic can be different than the IP used in the router id.
Ian http://www.ccie4u.com Rack Rentals and Lab Scenarios On 25 Mar 2003 at 4:24, XY HIEN LE wrote: > Hi all, > > Two routing protocols: OSPF and EIGRP DO need to have their own router > ID reachable by other routers to have proper network connectivity, or am > I incorrect? > > Any confirmation on this is much appreciated. > > Xy Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=66153&t=66108 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
