Designing ISP POP - pointers ?

Discussion in 'Cisco' started by ghoe, Sep 30, 2004.

  1. ghoe

    ghoe Guest

    I come from enterprise world and haven't had much experience in ISP world.
    Now, I am interested in good design of ISP POPs, when using MPLS
    functionality, dialin access, ADSL access.
    I haven't found some detailed schemes of good layout design of ISP POPs on
    Cisco site. There are lot of partial documents that only touch some part,
    but never in more detail and alltogether.
    There are lot of questions that come to mind ...
    How to separate different access roles (vlans, P-t-p links etc). Should I
    use BGP on all routers or maybe only on routers peering with other ISPs BGP
    routers, is is clever to user L3 functionality on catalyst switch if it L3,
    or use it as L2 device and leave all L3 functionality to 7200s.
    Are there any good pictures, schemes, design guides for ISP POPs.

    thanks a lot,
    ghoe, Sep 30, 2004
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  2. ghoe

    Alin Baltaru Guest

    try using BPG only on your border routers and have the 3550 configured
    as a BGP route-reflector client
    is is clever to user L3 functionality on catalyst switch if it L3,
    where I worke we use 3550 for metro routing leaving the 7200s for
    backbone traffic.
    as a said it's about practical experience. try reading some design
    guidlines from cisco site. the enterprise model is a good start.
    Alin Baltaru, Oct 1, 2004
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