Source based Routing via Dual WAN links Question on MX250

[LeAnts]

Hi All,

newby on meraki..

busy setting up a MX250 with basic config as a poc.

WAN1 connected to ISP1

WAN2 connected to ISP2

Port 3 connected to LAN

WAN ports are not live yet hence cannot test.

we want certain lan subnets to connect to internet via wan1 and others via wan2 (not using sd-wan and not using load balancing at this stage)

     - Will it work if I just define 'flow preferences' for certain source networks via wan1 / wan2 ie in the  'SD WAN and traffic Shaping' section?

         192.168.10.0.24 > ANY > WAN1

         192.168.20.0.24 > ANY > WAN1

          172.16.10.0/24 > ANY > WAN2

          172.16.20.0/24 > ANY > WAN2

 It seems not to be possible to define a source based route for wan interfaces under the 'Security SD-WAN\addressing    and vlans' section, can only do this for non-WAN interfaces it looks like.

is this the correct process to follow?

thanks in adv

[LeAnts]

ok think i did the right thing according to this doc i found.

https://documentation.meraki.com/MX/Firewall_and_Traffic_Shaping/MX_Load_Balancing_and_Flow_Preferen...

[GreenMan]

Correct - as per this document, source based default routing (chosen per-VLAN) only allows two types of next-hop:

An IP directly attached via a local VLAN

A remote MX, to which the MX in question is linked via an AutoVPN tunnel.

To specify a different WAN link for each VLAN, you need to use the subnet in use on each VLAN, in the way you describe, within the SD-WAN config.

https://documentation.meraki.com/MX/Networks_and_Routing/Source_Based_Default_Routing