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branch offices ...

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  • 06-02-2003 2:00pm
    #1
    zenith
    Registered Users Posts: 785 ✭✭✭


    Hi,

    I need to connect three branch offices to a head office using the same kit in each, over ISDN.

    Anybody got any suggestions as to what's worked for them, in the head office and in the branch office?

    Budget is miniscule, but these branch offices are zillions of miles away so needs to be really hands-off.

    I'm thinking ISDN router in branch office, with built-in hub, but I'm drawing a blank on what should go in the head office: what's the smallest, neatest remote access server you lot know about that supports 2BRI (ie, 4 channel) connections?

    best,
    ruairi


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    #2
    sirlinux
    Registered Users Posts: 651 ✭✭✭sirlinux


    if you have server you could just put however many isdn cards you need into it and let the branch offices dial into it. Def go with the isdn routers, if budget is very small dlink will do the job, if it's miniscule a (very) old pc, a p75 or even a high end 486 with a network card and an ISDN card will act a a very good on demand router with linux on it. Finally ever considered ADSL fixed cost every month and it's much easier, though proabably not available everywhere. The cost of the ISDN calls is going to hurt.


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    #3
    Rew
    Moderators, Sports Moderators Posts: 8,679 Mod ✭✭✭✭Rew


    Each office goes on a seperate subnet

    eg

    Home office 192.168.0.0
    office 1 192.168.1.0
    office 2 192.168.2.0
    office 3 192.168.3.0

    Now for the tricky bit:

    Each ISDN router in the offices is set to auto dial the home office ISDN router and thats their default route. The home router has all the routing tables and multiple ISDN interfaces so it knows which office's router to dial to send the packets.

    This means that the links are only up when there is trafic.

    For office 1 to tak to office 2 they go through the home office router. U could stop one office contacing another directly if u wanted.

    Cisco gear will do all of this as will Linux


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