10-22-2005 12:15 PM - edited 03-03-2019 10:47 AM
Hi
I have a problem with GRE configuration. between router A and B there is 1 more router. all 3 router area under same ospf domain. after configure as belows, tunnel interface is keep flapping with error message "routing loop ...". can i fix this problem?
A.
int loopback 0
ip address 1.1.1.1 255.255.255.0
int seial 0/0
ip address 2.2.12.1 255.255.255.0
Tunnel 10
ip unnumbered s0/0
tunnel source lo0
tunnel destination 2.2.2.2
router ospf 1
passive interface tunnel 10
.....
B.
int loopback 0
ip address 2.2.2.2 255.255.255.0
int seial 0/0
ip address 2.2.54.1 255.255.255.0
Tunnel 10
ip unnumbered s0/0
tunnel source lo0
tunnel destination 1.1.1.1
router ospf 1
passive interface tunnel 10
.....
10-22-2005 11:48 PM
Hello,
what does the error say exactly, does it mention something about recursive routing ? Try and add a static route on your router A:
ip route 2.2.2.2 255.255.255.255 Serial0/0
and on Router B:
ip route 1.1.1.1 255.255.255.255 Serial0/0
If that does not help, can you post the full configuration of both routers ?
Regards,
GP
10-23-2005 01:45 AM
Hi GP
thanks for answering.
actually, i already solve this with puting the ip ospf cost 9999 in the tunnel interface. but i think your solution is interesting one. i will try next time.
thanks again
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