Switching between ISPs in case of failure

[Zhomart Asken]

Hi all

I have a question regarding redundancy of internet connection. We have three firewalls each connected to different ISPs and all of them are connected to one central cisco router of the LAN. Now, the internet traffic is going through the firewall 1. But the problem is how could i make data go through one of the other firewalls in case of connection failure of firewall 1? Is there any technology on cisco router that will switch to another firewall if the link is down on the first provider?

Would appreciate your help

[jawad-mukhtar · Accepted solution]

at ISP end wat i think so link remans up but its down because nothing is going through that.

in that case you can enable ip sla on your router to track FW1 ISP next hope IP. if it is not reachavle it should shift route to another FW2 etc. like that..

Jawad

[Zhomart Asken]

I guess ip sla is exactly what is needed for this situation. Thanks!