Reliable GRE backup interface lab
I'm going through the reliable backup int lab for GRE, which I see was updated 7/7.
Here is what I'm getting caught up on.
- Configure IPv4 static routes on R5 for R4’s Loopback0 interface via both the DMVPN cloud and Tunnel45.
- Configure IPv4 static routes on R4 for R5’s Loopback0 interface via both the DMVPN cloud and Tunnel45.
- The static routes on R4 and R5 via the DMVPN cloud should have a higher administrative distance than those on Tunnel45.
Ok. So I make the route to 126.96.36.199 & 4 (dmvpn links) metric 2, giving routes to 188.8.131.52 & 4 default metric of 1
- Configure the backup interface feature on R4 and R5 so that if the Tunnel100 goes down, Tunnel45 is activated.
Here is where things get wonky. Now that I'm making tun45 the backup it goes into standby mode, thus giving the route to the DMVPN link, not tun100.
Am I missing something or is there a line in the lab missing about putting in a route for tun100?
Looking at the lab config, the metrics are set to 10 and 20, but I dont think that matters, because there is no route for tun100, so the metrics could be 1000 and 2000, it would still drop the route for tun45 once it goes into standby mode to become the backup interface of tun100, giving the route to the DMVPN link, not tun100.
OK, I just verified what I was questioning. I config replaced back to Basic IP Addressing, flat out copied, pasted the config from the workbook, still the same results.
R5(config)#do sh ip cef 184.108.40.206
nexthop 220.127.116.11 Tunnel0