High end network routing,

From: Brian D. McGrew (brian_at_doubledimension.com)
Date: 10/31/04

  • Next message: Alejandro Calbazana: "Samba Printing" 
    To: Redhat Support <redhat-list@redhat.com>
Date: Sun, 31 Oct 2004 13:59:47 -0800

    A couple of quick questions and a sanity check ... I have a very large
    network that i need to subnet and seperate out into VLANS and I want to
    use Linux.

    Right now, what I have are three Cisco Catalyst WS3548-XL switches. I
    need to create four VLANS, Admin/Sales, Engineering, Software and
    Manufacturing. I have a Cisco 2610 behind a Checkpoint firewall, load
    balancing two T1's out to the world.

    What I'm thinking about doing is setting up a Linux box (Fedora Core 2)
    with five ethernet interfaces in it. The existing switches will not do
    Layer 3 routing but they will share the VLAN segments.

    So, if I were to have the four VLANS, set the Linux box as the router
    for all four and then make the fifth interface in the box my connection
    to the outside world, would this work? How would I go about
    configuring routing on the Linux host so that all the networks can
    talk? And lastly, assuming that I'm going to be using a 100MB
    connections between everything (as opposed to gig), what kind of speed
    constraints am I looking at? A consultant trying to sell me a $17k
    Foundry switch is telling me that the new switch will route at 'wire'
    speed but I was under the impression that a Linux box would do the same
    thing?

    Any help would be great here, I really don't have the luxury of
    spending $17k on a new switch right now but I need to revive a failing
    network.

    Thanks,

    -brian

    Brian D. McGrew { brian@doubledimension.com ||
    pacemakertaker@yahoo.com } 

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