Default route to 2 different ISPs on Cisco ASA

[carl_townshend]

Hi All

I would like to do some equal cost load sharing with default routes to 2 different ISPs on my Cisco ASA, these will go out of 2 different interfaces.

Is this possible?

Would I just create 2 NATs, one for each interface?

Cheers

[Rob Ingram · Accepted solution]

@carl_townshend you would need to create ECMP traffic zones to load balance over both interfaces (and the NAT).

https://www.cisco.com/c/en/us/td/docs/security/asa/asa920/configuration/general/asa-920-general-config/interface-zones.html

https://integratingit.wordpress.com/2022/05/01/asa-traffic-zones/https://integratingit.wordpress.com/2024/03/10/ftd-traffic-zones-ecmp/