John, First off I noticed many errors in my lame schematic. I was able to ping both 80.1 and 80.33. These are the 2 loops on R1 (OSPF router). There weren't 2 tunnels, there were two secondary address instead (sorry, but I was trying to remember from Sat). Need a secondary for each /28 subnet that you want to see on R1 (even tho R1 has /27's). Secondary addresses were inside the 80 subnet (not the tunnel source and dest as I said. Shows how bad my memory really is). I added R5 just to make sure that the advertisements would go beyond the tunnel (to prove that it's really an IGRP route). I don't see the stability prob that you have spoken of. Here is the important stuff :
On R3 interface Tunnel0 ip address 172.16.80.3 255.255.255.240 secondary ip address 172.16.80.34 255.255.255.240 secondary ip address 172.16.1.33 255.255.255.240 tunnel source Serial1 tunnel destination 172.16.20.4 Works fine. I really wish someone would verify it for me. I'm a little leery after seeing Chuck's post. Can send you the complete configs of all 4 routers if you'd like. Gregg ""John Neiberger"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Why did you need two tunnels? It seems that you need one tunnel for > each mask length but you mention two tunnels for two /28 prefixes. How > did that work out? > > thanks, > John > > >>> "Gregg Malcolm" 12/19/01 11:26:29 AM >>> > I was able to get tunnels with secondary addresses to work. Config > looked > like this : > > lo0 > 172.16.80.1/27 --R1--162.16.1.x/27 --R3--172.16.20.x/28 > --R4--172.16.50.x/28 > --R5--E0 172.16.100.5/28 > lo1 172.16.80.33/27--R1-- .... > > IGRP/OSPF Redist was at R3. 2 tunnels between R3 and R4 for the 2 .80 > subnets on R1 with /28 mask. Tunnel source and dest inside the .80 > subnet. > Works great; can ping from R5 to both 80.1 and 80.5. IGRP routes > appear as > they should on R5. > > Found a good reference on CCO re: split horizon and IGRP/RIP w/ > secondary > addresses. > > http://www.cisco.com/warp/public/105/41.html > > Regards, Gregg Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=29670&t=29659 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
