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I am using IPSET to define the interested IP range.

I want to direct packets to one out of two WAN connections according to an IP range. Here are my conditions.

  1. A specific IP range. It is defined by using IPSET command to modify the underlying object for the network-group function.
  2. WAN connection, using DHCP, on eth4.
  3. Another WAN connection, using DHCP, on eth3.
  4. ER-X router, v2.09

By default, IP packets should use eth3 wan connection unless the destination IP address lied in the interested IP range. If so, packets should use eth4.

I have tried the following way, but it does not work. All packets always use eth3 unless I pulled out the eth3 connector.

First, create a network-group named "specialroute" and then use IPSET to import the interested IP range (for packets destination addresses to match).

Then create a static route table, representing where matched packets should go.

set protocols static table 13 interface-route 0.0.0.0/0 next-hop-interface eth4

Then mark eth4 with the failover-only flag to direct packets to eth3 by default.

However, some packets with the destination in the pre-defined IP range should go to eth4. So, I tried using Policy-Based-Routing to achieve the goal.

set firewall modify PBR rule 90 action modify
set firewall modify PBR rule 90 description specialroute
set firewall modify PBR rule 90 destination group network-group specialroute
set firewall modify PBR rule 90 modify table 13

It did not work as the failover-only flag might prevail PBR rules, and the router never sent packets from eth4.

What should I do? I want to let packets use one WAN connection by default unless the destination address belongs to the pre-defined IP ranges.

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  • Can you post gui pictures of your config?. Jul 4 at 4:14
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I think you have configure Both the Routes in the main routing table as well as in table 13 and configure the PBR policy on the LAN interface in "IN" Direction

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