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Ask the Expert- SD-WAN

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Firepower 2110 HA dual ISP

I have a customer currently running 6.2.2 FirePower code managed via FMC.

 

They have 2 separate circuits from the same ISP with different ranges and want Circuit1 connected to Primary and Circuit2 to Secondary so that, should a failover happen, they use the second circuit on the second firewall.

 

Is this possible?

If so then how might be the best way to implement it in regards to NAT/ACLS/Routes etc?

 

If not possible then how would be best to workaround so that it will work as a HA pair whilst retaining resiliency? 

 

Many thanks

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Enthusiast

Re: Firepower 2110 HA dual ISP

Hi,

So you are planning to configure the FTD 2110 on High-availability and you have 2 ISP links.

As per your requirements i don't think so that is possible because your firewalls are on HA.

On HA, even if your firewall switch-over to the second firewall also it will take the Circuit1 IP to route the traffic outside.

Why can't you utilize both the links with the help of PBR. So when one of the link goes down also it will be swithover to the second circuit and you will get a full redundant network. Below is some video links to configure PBR.

PBR Config Link 1 

PBR Config Link 2

 

Hope This Helps

Abheesh