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Router with dual ISPs

captlanman
Level 1
Level 1

Hello,

I have a router with dual ISPs and dual internal subnets. I need to configure the router so that internal subnet #1 uses ISP #1 for their internet and internal subnet #2 uses ISP#2 for their internet connectivity. Fault tolerance would also be nice but not a priority.

2 Replies 2

Hello.

Basic configuration may be found here - http://docwiki.cisco.com/wiki/NAT_failover_with_DUAL_ISP_on_a_router_Configuration_Example

Preferred channel per source may be chosen by PBR, based on track object (on ip sla per ISP).

Thanks Vasilii,

Here is my current relevant config entries:

interface FastEthernet0
 description Wireless_WAN
 ip address xxx.xxx.xxx.161 255.255.255.252
 ip nat outside
 
!
interface FastEthernet1
 description Video_WAN
 ip address xxx.xxx.xxx.125 255.255.255.252
 ip nat outside

interface Vlan119
 ip address xxx.xxx.xxx.xxx 255.255.255.0
 ip nat inside
 
!
interface Vlan120
 ip address xxx.xxx.xxx.xxx 255.255.255.0
 ip nat inside
 ip virtual-reassembly in

ip nat inside source route-map NAT1 interface FastEthernet0 overload
ip nat inside source route-map NAT2 interface FastEthernet1 overload
ip route 0.0.0.0 0.0.0.0 xxx.xxx.xxx.162
ip route 0.0.0.0 0.0.0.0 xxx.xxx.xxx.126 100


ip access-list standard VIDEO
 permit 192.168.120.0 0.0.0.255
ip access-list standard WIRELESS
 permit 192.168.119.0 0.0.0.255

route-map NAT1 permit 10
 description NAT route map for F0
 match ip address WIRELESS
 match interface FastEthernet0


route-map NAT2 permit 10
 description NAT route map for F1
 match ip address VIDEO
 match interface FastEthernet1

The Wireless segment is communicating fine but not the Video.

Is it possible that my route statements are preventing the video segment from communicating?

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