Re: NIC Selection

From: Martin Stone (martin.stone_at_db.com)
Date: 04/30/04

  • Next message: Alexander Dalloz: "Re: NIC Selection" 
    Date: Fri, 30 Apr 2004 11:17:12 -0400
To: For users of Fedora Core releases <fedora-list@redhat.com>

    Whoa, I just realized that I totally misread your question! Sorry if i insulted
    you with newbie info. I have no idea how the kernel would select an interface
    if both were on the same network.

    Sorry, *duh*, I'll go drink some more coffee now...

    Martin

    Martin Stone wrote:
    > That's not taken care of by Mozilla, rather by your routing setup.
    > Check out the output of:
    >
    > netstat -nr
    >
    > That's your routing table. By default, when an interface comes up on an
    > IP, an interface route is added through that interface for that IP
    > network - so if your eth0 came up on 10.0.1.2/24, you'd see a route in
    > there for 10.0.1.0/24 through eth0 - then there is the default (0.0.0.0)
    > route. That's usually the route that matches any network that is not
    > directly connected. So if you had a default route through say 10.0.1.1,
    > your internet traffic would want to be routed thru 10.0.1.1 - to get to
    > 10.0.1.1, IP knows that it has to use eth0, so the traffic goes out eth0
    > destined for 10.0.1.1.
    >
    > Or maybe you're just asking about where the NIC's get configured? That
    > info is in /etc/sysconfig/network-scripts - check out ifcfg-* in that
    > directory. Also, your default route is set by the GATEWAY entry in
    > /etc/sysconfig/network.
    >
    > Hope this helps!
    > Martin
    >
    >
    > Timothy J. Miller wrote:
    >
    >> When a system has 2 network cards that are on the same network,
    >> how does FC1 select which NIC to use? By that I mean, Mozilla starts up,
    >> what causes it to use one card, say eth1 over eth0? Anyone know?
    >>
    >> Thanks
    >>
    >> - Tim
    >>
    >>
    >
    >
    > 

    -- 
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  • Next message: Alexander Dalloz: "Re: NIC Selection"

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