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Bảng tham khảo tính tương thích giữa các OSPF network type trên frame-relay

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  • Bảng tham khảo tính tương thích giữa các OSPF network type trên frame-relay

    I updated your OSPF neighbor chart and added some notes below.

    Side A Side B Works Remedy Needed

    P2P P2P yes none
    P2M P2M yes none
    Broadcast BC yes none
    Non-broadcast non-BC yes neighbor command
    Broadcast non-BC yes adjust hello and/or dead
    timers
    P2P P2M yes adjust hello
    and/or dead timers
    P2P non-BC no no remedy
    P2M non-BC no no remedy
    P2P BC no no remedy
    P2M BC no no remedy

    Note: Possible issues with DR election with broadcast and non-broadcast network types in a hub and spoke environment. Set the spokes to have an OSPF priority of "0".

    Note: Only use the neighbor command on the hub if using non-broadcast network type (default for physical interfaces and multipoint subinterfaces).

    Note: If using P2P in a hub and spoke environment the hub will have to be P2M if there is more than one neighbor off the hub's interface. P2P and P2M will neighbor as long as the hello and dead timers match.

    Brian Dennis, CCIE #2210 (R&S/ISP Dial/Security) brian@labforge.com http://www.labforge.com



    -----Original Message-----
    From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Suy, Syson
    Sent: Monday, March 03, 2003 1:08 PM
    To: ccielab@groupstudy.com
    Subject: OSPF Question ..... OSPF types on Frame Relay (NBMA) .... summary ....

    Hi guys!

    OSPF network types on Frame Relay (NBMA) .... summary ....

    Side A Side B Works remedy needed

    point to point PtP yes none

    non-broadcast non-BC yes neighbor command
    broadcast non-BC yes ? neighbor
    command ?
    point to multipoint non-BC no no remedy
    PtP non-BC no no
    remedy

    point to multipoint BC yes ? neighbor
    command
    broadcast BC yes
    none
    PtP BC no
    no remedy

    does everybody agree to this?

    does this apply to HDLC, & other PtP WAN links ....?

    thanks in advance!





    Syson Suy
    EDS Leveraged Platform Solution Center, Xerox Telecom
    Syson.Suy@CAN.XEROX.COM
    If Life is a Game, These are the Rules:
    "They say that life is a lot like golf --don't believe them. Golf is a lot more complicated." -- Gardner Dickinson
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