We recently changed the way we access the internet from a single location shared between 3 sites with the DNS server located at the main site to local internet access at each site. At one of the locations the local internet has been installed and I need to route traffic over the new connection and not over the WAN.
I tried changing the Gateway of last resort to the internal IP address of the local firewall. but when I do that I lose all internet connectivity. I can still access the network and see the servers over the WAN but I can not access the Internet and a DNS query to our DNS server located at the main location comes back rejected. ( it currently works)
I would appreciate any suggestions on what else I need to do to do to route the Internet traffic out the local connection and be able to query our DNS server at the main location.
Below is the IP Routing table. I changed the gateway of last resort to 192.168.110.21 which is the internal IP address of the firewall on site. The DNS server I am trying to utilize is 22.214.171.124 and the IP address on the router at the main location is 192.168.12.5.
Router_2#show ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route
Gateway of last resort is 192.168.12.5 to network 0.0.0.0
C 192.168.110.0/24 is directly connected, FastEthernet0/0
172.31.0.0/24 is subnetted, 3 subnets
C 172.31.3.0 is directly connected, FastEthernet0/1
D 172.31.2.0 [90/4359680] via 192.168.12.5, 01:20:31, Serial0/0/0.1
D 172.31.1.0 [90/3847680] via 192.168.12.5, 1w0d, Serial0/0/0.1
126.96.36.199/24 is subnetted, 1 subnets
D 188.8.131.52 [90/4359680] via 192.168.12.5, 01:20:31, Serial0/0/0.1
184.108.40.206/24 is subnetted, 1 subnets
D 220.127.116.11 [90/3847680] via 192.168.12.5, 1w0d, Serial0/0/0.1
192.168.11.0/30 is subnetted, 1 subnets
D 192.168.11.12 [90/4357120] via 192.168.12.5, 01:20:32, Serial0/0/0.1
192.168.12.0/30 is subnetted, 1 subnets
C 192.168.12.4 is directly connected, Serial0/0/0.1
S* 0.0.0.0/0 [1/0] via 192.168.12.5
Thanks for any suggestions.