Dial backup and EIGRP
Posted on 2009-04-01
At our corporate office, there is a layer 3 Cisco 4506, a Cisco 2511 with a modem bank attached. We have approx 50 sites connected via MPLS and we are running EIGRP. At each remote site, there is a Cisco 1721 with an external modem hanging off of the AUX port. There is a dialer interface on each 1721 configured with a 10.64.5.x ip address. The ethernet interface on each 1721 is configured with a 10.65.x.1 ip address.
Currently, in order for dial backup to work, I have to manually add routes to the 4506 and the 2511. Once the MPLS link comes up, I have to un-do the routes I added.
Cisco 4506 - 10.64.1.1/24
Cisco 2511 - 10.64.3.254/24
On the 4506, I add the following for the remote network of 10.65.24.0/24
ip route 10.65.24.0 255.255.255.0 10.64.3.254 200
On the 2511, I add the following for the dial up link
ip route 10.65.24.0 255.255.255.0 10.64.5.162 <--- dialer interface ip on 1721 at remote site
I thought adding the weighted route on the 4506 would allow for dynamic routing once the MPLS link came back up. But it doesn't. As soon as I enter that command, I am unable to ping the remote site via the MPLS connection.
Any suggestions? If you need more info please ask. Here is the current EIGRP config:
router eigrp 1
redistribute static metric 50000 100 255 1 1500
redistribute ospf 1