Cisco Dual WAN failover config on Single Router
Posted on 2005-03-22
From the answers that I have seen I am positive someone can help me with this question.
I have an IP Base Cisco 2811 Router with one HWIC-4ESW and two Internet connections from different providers. My internet connections (Wireless and T1) come in through FastEthernet0/0 and FastEthernet0/1 respectively. My LAN side attaches through VLAN1 via FastEthernet0/0/0.
We use the Wireless as our primary connection to the internet for all LAN users, and also host internet servers through NAT. I currently have NAT entries duplicated for both Internet links to the internal servers.
We have a Dynamic DNS provider that checks every 2 minutes for a failure on our Wireless IP and if detected, switches all records over to our T1.
Wireless FastEthernet0/0 NAT OUTSIDE
Frac T1 FastEthernet0/1 NAT OUTSIDE
LAN FastEthernet0/0/0 as VLAN1 NAT INSIDE
Interface IPS (examples only)
Wireless 220.127.116.11 Gateway to ISP
1.1.1.(2-6) Wireless IP's
Frac T1 18.104.22.168 Gateway to ISP
2.2.2.(2-6) T1 IP's
192.168.1.2 - 192.168.1.254
ip nat inside source list 1 interface FastEthernet0/0 overload
ip nat inside source list 2 interface FastEthernet0/1 overload
ip nat inside source static tcp 192.168.1.3 25 22.214.171.124 25 extendable
ip nat inside source static tcp 192.168.1.3 25 126.96.36.199 25 extendable
access-list 1 permit 192.168.1.0 0.0.0.255
access-list 2 permit 192.168.1.0 0.0.0.255
ip route 0.0.0.0 0.0.0.0 188.8.131.52
ip route 0.0.0.0 0.0.0.0 184.108.40.206 20
What would be the configuration for the router. I have most of the pieces together, but something is just not working, besides my brain.
Thank you in advance!!!