There are several things in the configs that do not seem right. Perhaps when they are straightened out it will work.
Right now the biggest problem is that if you are on the local router and attempt to ping the Ethernet 0 of the remote router, the local router will believe that 10.10.10.12 is reachable through the connected subnet on Ethernet 0 and will not try anything else. You will need to correct this.
The local router tunnel is in subnet 20.20.20 while the remote router tunnel is in subnet 10.10.10 (unnumbered from Eth 0). Why are the two ends in different networks?
Both Ethernet 0 interfaces are in subnet 10.10.10 which would make sense if they are actually connected. Are they connected through these interfaces? If they are not connected then one of them needs to be configured in a different subnet (or perhaps a different network).
Both Ethernet 1 interfaces are in 192.168.115 and since this is what the tunnel destinations point at it looks like the routers are connected to each other by this interface. Is that correct?
The local router has two static routes configured:
ip route 10.10.10.0 255.255.255.0 Tunnel0
ip route 10.10.10.0 255.255.255.0 10.10.10.12
It does not make much sense to have two static routes for the same network pointing different ways. And since the 10.10.10.0 network is a connected network (connected on Ethernet 0) the static routes will not be used anyway. You should remove these routes or put in static routes that make sense.
The remote router has no static routes. Did you intend to have static routes there?
You can make this situation work with static routes or with dynamic routing protocol. You need to decide which way you want it to work and then configure that.
HTH
Rick
HTH
Rick
