I want to combine 2 office by using gre tunnel between cisco routers. In both offices the provider gives you a /30, i.e. I is given in the first office 18.104.22.168 22.214.171.124 gateway, with the gateway 126.96.36.199 188.8.131.52 in the second. I want to put both sides of 2 Cisco 881, which address 184.108.40.206 and 220.127.116.11 reserved by using HSRP. In the first office on the interfaces hang addresses: 18.104.22.168, 22.214.171.124, 126.96.36.199 HSRP saying in General. In the second, respectively: 188.8.131.52, 184.108.40.206, in HSRP 220.127.116.11 — General. In this configuration, the cat is to initiate a connection with invalid provider address 18.104.22.168(22.214.171.124) and don't see each other, while happily answering HSRP shny address if the request comes from any other host on the Internet.
Well and itself I will answer. The problem was not that the tunnel was not working and that inside of it is not running traffic. all was resolved by replacing ip unnumbered FastEthernet4 at ip address 192.168.1.1 255.255.255.252 on the one hand, and ip address 192.168.1.2 255.255.255.252 on the other