Configuring Multiple ISPs with Backup and NAT

Jan 28, 2008 1 Replies
Configuring Multiple ISPs with Backup and NAT open original image

Hi,



I have Multiple ISP Internet links and Multiple Valid IP ranges from each ISP.



For Example let my First Range be 20.10.10.0/24 from ISP-A let my Second Range be 30.10.10.0/24 from ISP-B. Traffic from First range will use ISP-A's Internet Link and others will use ISP-B's link.



I want to configure my CISCO 1841 Router (IOS 12.4) to use Both ISP lines using Route Maps. Also, I want to Enable Redundancy between these two links i.e. If one fails let it use the other.



System-A should be routed after NAT-ing through ISP-A. System-B should be routed after NAT-ing through ISP-B. In case of either link failure, respective system should be routed through the working link.



I am interested in outbound traffic availability only.



Can anybody help ? Thanks in advance.



Rakesh =====


hope this link answers your question

formatting link
Hi,

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required