Re: router with 2 redundant inferfaces

[Chris Myers <clmmacunix () charter net>]

Well, you really cannot get away from the single point of failure if  
the leased lines are from the same ISP, unless they are offering you 2  
different POP's on different grids. If it is two different ISP's, I  
would still be surprised if they are not on the same power grid, but  
better scenario. The two WIC modules reduce the cost and the point in  
getting two leased lines. Your more common points of failure are going  
to be an ISP, which the two WIC's work, Local Power, which two WIC's  
or Two routers don't work and does not matter, Hardware Failure, most  
common and now nothing works. If a router, module, fan, etc fails it  
is better to have a backup. You will have to run a routing protocol to  
get real redundancy, having weighted static routes to switch traffic  
to the backup ISP, or put a manual route change in to work when you  
need the backup for the two ISP scenario. Always give yourself as much  
redundancy as you can afford.

Thank You,


Chris Myers
clmmacunix () charter net

John 1:17
For the Law was given through Moses; grace and truth were realized  
through Jesus Christ.

   Go Vols!!!!

On Apr 13, 2008, at 3:18 PM, shadow floating wrote:

> Hi guys,
> my company is having 2 leased lines internet connections and they were
> about to buy two routers to make them standby to each other, each with
> one of the internet connections, as they were discussing with some
> network consultant...he convinced them to reduce cost and put 2 wics
> in one router only each connected to the each internet connection
> instead of buying 2 routers....is that appropriate??
>
> thanks alot
>
> Nad
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