Multiple Frame Relay Access Circuits

Discussion in 'Cisco' started by joel_anita@yahoo.com, Dec 22, 2004.

  1. Guest

    Is it possible to have two cisco routers at one site (configured with
    HSRP) each with a T1 access circuit to a single carrier's frame network
    to provide failover between the two circuits. Assume the remote site
    is configured the same with four PVC's in the clouds between each frame
    port like a bowtie.
    , Dec 22, 2004
    #1
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  2. <> wrote in message
    news:...
    > Is it possible to have two cisco routers at one site (configured with
    > HSRP) each with a T1 access circuit to a single carrier's frame network
    > to provide failover between the two circuits. Assume the remote site
    > is configured the same with four PVC's in the clouds between each frame
    > port like a bowtie.
    >

    Yes!

    :eek:)
    Buzz Lightbeer, Dec 22, 2004
    #2
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  3. PES Guest

    wrote:
    > Is it possible to have two cisco routers at one site (configured with
    > HSRP) each with a T1 access circuit to a single carrier's frame network
    > to provide failover between the two circuits. Assume the remote site
    > is configured the same with four PVC's in the clouds between each frame
    > port like a bowtie.
    >


    Yes, but hsrp is just mostly so that the default gateway on the lan is
    maintained in light of a router failure. All hosts where the two
    routers are point to the hsrp address as their default gateway. You
    will also need to run a dynamic routing protocol for the routers (eigrp,
    ospf, etc..). Also, you need to request engineering documents from the
    telcos (frame and local loop providers). If you aren't careful, you
    will still be relying on one frame switch, one binder group, and one
    physical path into your building. End result several single points of
    failure that will still take both links down. For example a car hits
    the telephone pole and destroys the 50 pair run into your building, both
    links are down. This solution may still provide you with enough
    redundancy to be attractive, but don't oversell it to yourself or the
    higher ups.

    --
    -------------------------
    Paul Stewart
    Lexnet Inc.
    Email address is in ROT13
    PES, Dec 22, 2004
    #3
  4. Guest

    Paul and Buzz - thanks for the input.
    , Dec 23, 2004
    #4
  5. Guest

    , Dec 24, 2004
    #5
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