Hi John
Your idea is good. To back-up a 2Mbps line it is difficult to recommend ISDN
because of the price of a PRI, you should check the cost effectiveness in
every location. It would certainly be more cost effective to request a 2Mbps
to be delivered on SDH with dual access to your permisses, but this will not
protect you against the failure ofthe FR switch of your service provider.
At the hub site, if you go for FR, you should implement a dual access, dual
router with HSRP. Implement dual PVC's from the hub to the spokes and load
sharing accross the 2 lines. For this, many FR providers offer "shadow
PVC's" which are normal PVC's but only used in case of failure of one of the
two lines. The shadow PVC's are cheaper than the regular PVC's.
Other possibilities are IP network with MPLS.
I'm sure your service provider over there can help you in the design.
If you want some references contact me offline.
Cheers
Laurent
>From: "John Brandis" <[EMAIL PROTECTED]>
>Reply-To: "John Brandis" <[EMAIL PROTECTED]>
>To: <[EMAIL PROTECTED]>
>Subject: Internetwork Design Question
>Date: Fri, 16 Mar 2001 12:31:35 +1100
>
>HI @groupstudy members
>
>Got a question for you. I have just started at a startup network company
>and they wish to have links to about 10 different locations (some of
>them overseas). What we need is that these links come into a central
>site (home office router) and we also have some sort of redundant
>backup should one of these links fail. One of our needs is that each
>link have a bandwidth of 2MB/S.
>
>My idea was to install and configure a frame relay device in the central
>office then organize for for the remote offices to terminate the frame
>relay channel in their respective offices.
>
>Can some one pass on a comment from previous experience in regards to
>the service that I am trying to create. Any constructive information is
>much appreciated.
>
>John B
>
>[EMAIL PROTECTED]
>
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