Priscilla Oppenheimer wrote: > > There was a virtual link. The virtual link was from R1 over to > another > router across the Frame Relay cloud. R1 is an ABR connecting > Area 0 and > Area 1. Area 0 is the Ethernet LAN. Area 1 is the Frame Relay > cloud. For > some unknown reason, there's an Area 2 also on the other side > of Area 1. > Does that ring a bell regarding any gotchas?
Priscilla, There must be at least three areas involved in a virtual link. So I am intrigued by the phantom area 2. What area were you expecting to see on the other side of area 1? In your case, it seems as if the ABRs are directly connected. That is to say, the transit area is in essence a p-t-p connection. That isn't always necessarily the case so I don't think OSPF makes any kind of distinction. As I understand it, the virtual connection/tunnel is treated like an unnumbered one. So the network statements have to be in place for the transit area in both routers, area 0 in the backbone ABR, and the discontiguous area in the discontiguous ABR. So that is the basis for my interest in your phantom area 2. Of course, this doesn't seem to be in any way related to why you wouldn't be able to see the area 0 network across the ISDN connection. The interesting parallel is that virtual links and demand circuits are both treated the same. That is, the DNA bit is set for routes learned via either one. So is there anything in your setup not consistent with having DNA show up in the topo table? I can't imagine what but I have never tried anything like your setup. Tough one! Scott Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=34410&t=34379 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
