llttab gabtab - Veritas Cluster Server

This is a discussion on llttab gabtab - Veritas Cluster Server ; what is the llttab & gabtab? what is the use of these two protocols. pl give the details above protocols. regards, venkat...

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  1. llttab gabtab


    what is the llttab & gabtab? what is the use of these two protocols.

    pl give the details above protocols.

    regards,
    venkat

  2. Re: llttab gabtab

    What is TCP/IP ?


    IP is the thing that makes sure the messages are delivered and TCP is
    the contents of the message.

    LLT is Low Latency Transport protocol. It makes sure that the messages
    are delivered between nodes of the cluster (for the technical among us,
    it uses DLPI layer - thus layer 2 - comms)

    GAB is Global Membership Atomic Broadcast. This is the contents of the
    cluster info being carried between nodes in the cluser. Stuff like
    (never would have guessed this, but) Membership and the state of the
    cluster on the different nodes.

    For LLT you need 2 physical links. So the /etc/llttab contains the names
    of the links, the name or number of the node in the cluster as well as
    the cluster number it belongs to. (man llttab is a good place to start -
    or for those windows people , try "man man") The /etc/gabtab file tells
    GAB how to start up (mostly contains the number of nodes needed to seed
    the cluster - man gabtab is a good place to start)



    venkat wrote:
    > what is the llttab & gabtab? what is the use of these two protocols.
    >
    > pl give the details above protocols.
    >
    > regards,
    > venkat


  3. Re: llttab gabtab


    thnaks for ur answer.

    Me wrote:
    >What is TCP/IP ?
    >
    >
    >IP is the thing that makes sure the messages are delivered and TCP is
    >the contents of the message.
    >
    >LLT is Low Latency Transport protocol. It makes sure that the messages
    >are delivered between nodes of the cluster (for the technical among us,


    >it uses DLPI layer - thus layer 2 - comms)
    >
    >GAB is Global Membership Atomic Broadcast. This is the contents of the
    >cluster info being carried between nodes in the cluser. Stuff like
    >(never would have guessed this, but) Membership and the state of the
    >cluster on the different nodes.
    >
    >For LLT you need 2 physical links. So the /etc/llttab contains the names


    >of the links, the name or number of the node in the cluster as well as
    >the cluster number it belongs to. (man llttab is a good place to start -


    >or for those windows people , try "man man") The /etc/gabtab file tells


    >GAB how to start up (mostly contains the number of nodes needed to seed


    >the cluster - man gabtab is a good place to start)
    >
    >
    >
    >venkat wrote:
    >> what is the llttab & gabtab? what is the use of these two protocols.
    >>
    >> pl give the details above protocols.
    >>
    >> regards,
    >> venkat



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