Routing : How to force outgoing ethernet interface

From: Alexandre Déry/dgt/sct (Alexandre.Dery_at_sct.gouv.qc.ca)
Date: 07/29/04

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    To: sunmanagers@sunmanagers.org
Date: Thu, 29 Jul 2004 10:02:24 -0400

    Hi gurus,

    I have a machine with an interface qfe0 with ip address 192.168.2.132, and
    the default route is 192.168.2.1 (set with "route add default
    192.168.2.1"). The interface works fine, and so does the default route...
    I plumb a second interface, qfe1, with ip addresss 192.168.2.131. Now I
    have 2 interfaces on the same subnet (2.131 and 2.132). Everything is
    fine.

    The problem :

    At this point, all the traffic that goes out the default route is using
    qfe0 (192.168.2.132), because it was the first one to be plumbed.

    What I would like is a way change de default route to force the traffic to
    go out the qfe1 interface (with ip 192.168.2.131).

    I tried a few things late last night (mostly interface metrics) but it
    didn't work. I tried route with the -ifq parameter with no luck... maybe I
    had the wrong syntax though.

    So, the question is : How can I change my default route to force traffic
    to go out of the newly plumbed qfe1 (192.168.2.131) interface, instead of
    qfe0 (192.168.2.132) ?

    Thanks !

    Alexandre Dery
    Technicien, SCSA, CCNA
    Direction ginirale des technologies de l'information et des communications
    1500E, rue Jean-Talon Nord 1er itage
    Sainte-Foy (Quibec) G1N 4T6
    Tiliphone: (418) 646-9273
    Tilicopieur: (418) 528-0418
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