Need to Have both ISP to access internet/servers
I need help to configure a Cisco 2911 router, It has two ISP one as primary 216.140.140.0, and secondary for backup as 216.150.150.0.
I need to be able to access both the ISP's using the same interface Gi0/1.
Since we have servers that have to have specific IP both when accessed and when accessing the internet so I used static Nat for the servers and Dynamic for all others.
I did the following configuration but it does not work as i want it, if i unplug the Primary ISP from the unmanaged switch the secondary cant access the Internet or network.The secondary only works when the primary and secondary are both connected and have an equal cost Administrative distance, hence it is not available when the primary is down .
Even though I can use a sub-interface instead of a secondary Ip address (which worked when I used it) I need to use the same interface using a unmanaged switch to which the outside interface of the router is connected and the two ISP's.
Please Let me know what I can do to make this work.
Below is my configuration.
interface GigabitEthernet0/0
ip address 10.0.0.254 255.255.255.0
ip nat inside
ip virtual-reassembly in
duplex auto
speed auto
!
interface GigabitEthernet0/1
ip address 216.150.150.4 255.255.255.0 secondary
ip address 216.140.140.2 255.255.255.224
ip nat outside
ip virtual-reassembly in
duplex auto
speed auto
!
ip nat inside source route-map Primary interface GigabitEthernet0/1 overload
ip nat inside source route-map Secondary interface GigabitEthernet0/1 overload
ip nat inside source static 10.0.0.52 216.140.140.4 route-map Primary
ip nat inside source static 10.0.0.53 216.140.140.5 route-map Primary
ip nat inside source static 10.0.0.59 216.140.140.6 route-map Primary
ip nat inside source static 10.0.0.61 216.140.140.7 route-map Primary
ip nat inside source static 10.0.0.228 216.140.140.8 route-map Primary
ip nat inside source static 10.0.0.16 216.140.140.11 route-map Primary
ip nat inside source static 10.0.0.30 216.140.140.12 route-map Primary
ip nat inside source static 10.0.0.251 216.140.140.13 route-map Primary
ip nat inside source static 10.0.0.44 216.140.140.15 route-map Primary
ip nat inside source static 10.0.0.54 216.140.140.16 route-map Primary
ip nat inside source static 10.0.0.23 216.140.140.17 route-map Primary
ip nat inside source static 10.0.0.58 216.140.140.18 route-map Primary
ip nat inside source static 10.0.0.230 216.140.140.19 route-map Primary
ip nat inside source static 10.0.0.216 216.140.140.21 route-map Primary
ip nat inside source static 10.0.0.220 216.140.140.22 route-map Primary
ip nat inside source static 10.0.0.33 216.140.140.25 route-map Primary
ip nat inside source static 10.0.0.21 216.140.140.26 route-map Primary
ip nat inside source static 10.0.0.22 216.140.140.27 route-map Primary
ip nat inside source static 10.0.0.24 216.140.140.28 route-map Primary
ip nat inside source static 10.0.0.25 216.140.140.29 route-map Primary
ip nat inside source static 10.0.0.59 216.150.150.5 route-map secondary
ip nat inside source static 10.0.0.52 216.150.150.6 route-map secondary
ip nat inside source static 10.0.0.53 216.150.150.7 route-map secondary
ip nat inside source static 10.0.0.16 216.150.150.8 route-map secondary
ip nat inside source static 10.0.0.58 216.150.150.9 route-map secondary
ip nat inside source static 10.0.0.59 216.150.150.10 route-map secondary
ip nat inside source static 10.0.0.61 216.150.150.11 route-map secondary
ip route 0.0.0.0 0.0.0.0 216.140.140.1
ip route 0.0.0.0 0.0.0.0 216.150.150.254 10
access-list 100 permit ip 10.0.0.0 0.255.255.255 any
route-map secondary permit 10
match ip address 100
set ip next-hop 216.150.150.254
!
route-map primary permit 10
match ip address 100
set ip next-hop 216.140.140.1
ip sla 1
icmp-echo 216.140.140.1 source-ip 216.140.140.2
timeout 1000
threshold 2
frequency 3
ip sla schedule 1 life forever start-time now
track 1 ip sla 1 reachability
ip route 0.0.0.0 0.0.0.0 216.140.140.1 track 1
ip route 0.0.0.0 0.0.0.0 216.150.50..254 10
