Configure single ISP 2 POP link auto-failover

[Tharaka4747]

Hi

I need to configure auto-failover for a link. That link provided by single ISP but via 2 POPs as primary and secondary link.

So if Primary POP link  went down, the traffic should pass to the secondary link. I don't know the exact configurations to configure this.

The network topology is like below.

I NEED TO CONFIGURE THIS AS AUTO FAILOVER, USING IP SLA.

Can any one help me to conigure this ? PLEASE SEE the attach graph for the network topology.

I would be glad anyone can help me

[Tharaka4747]

Hi

I have tested mentioned configuration in a simulation envirnment and worked finly.

But if i trace desination ip form customer LAN, in the NAT table it shows only one link NAT Translation only. It is not shows the both path NAT translations. But if i drop one link, then onward in the NAT table it shows other link NAT translation.

I want to know without any link drop, why in NAT table shows only one NAT translation ?.

Or can you tell me how can i check both link work together while i am sendinf traffic to destination !.

[Tharaka4747]

Hi ,

Can i do load balancing for this 2 links using BGP. ? Because ip-sla is not working as load balancing. If i ping to destination ip by adding high pacet size continusely. but under ip-sla configuration traffic goes via one link.

So i think it is better to implement it using BGP, but i have some confusion with implement it. Have you got any idea to implemet load balancing in simply way.

[cadet alain]

Hi,

The router will do load-sharing per src-dst ip pair whether the routes are installed with a static route or via BGP, this is the switching process which is in charge of the forwarding.

Regards.

Alain

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