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ASA 5506-X Site to Site VPN Multiple Subnets

Mike Wagner
Level 1
Level 1

Hi,

 

We have a simple site-to-site VPN setup with two ASA 5506-X's.  We're tunneling all traffic (including internet-bound) from site A to site B.  Site A has two internal subnets in use.  I know you can't assign multiple IP's to a single interface on an ASA, so I assigned the gateway for the second subnet to the 2nd interface on the ASA, and had the on-site tech plug both "inside" interfaces into the LAN.  From what he described, it sounds like it caused a loop.  I don't understand why though, as the inside interfaces of the ASA are not switchports, and not part of a BVI.

 

Any help is greatly appreciated!

 

Thanks!

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