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barsaar
barsaar
New Member
March 17, 2019
Question

Same LAN - different routing

  • March 17, 2019
  • 1 reply
  • 2287 views

Hello guys,

 

I am having a problem with at least 2 Forti's (with the same version) that part of subnet 192.168.15.0/24 is routing to WAN1

and some to LAN2 (which is my LTE redundency). WAN2 is a different thing and is not belong to this situation. Therefore my questions are:

1. Without any static route, policy route how can part of the lan go thru WAN1 and part thru LTE?

2. How to fix it?

3. I saw it while I checked my IP thru each connection, how can I see it within the Forti.

 

1 reply

Toshi_Esumi
SuperUser
Toshi_Esumi
SuperUser
March 18, 2019

Your condition No.1 makes it impossible. Your FGT needs to differentiate traffic somehow and route it differently to WAN1 or LAN2. Policy route is the tool to do that based on the sources and other factors other than destinations, which is used for regular routing.

Besides, you seem to want to use LAN2 as a backup/failover in case WAN1 connection dies. Once you started using policy routes to split the traffic, a failover souldn't work any more.

You need to consider over those limitations and constraints, and adjust your goals accordingly.

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