Not at all.
In BGP both connections are considered active.
BGP as mentioned earlier is a distance vector EGP and so a best path based on
the AS path length is the default method for a BGP router to decide which
link it will use to send packets out of.
If the route to "Desination Network A" has a shorter path via ISP A than ISP
B then your router will send packets to ISP A.
However "Destination Network B" might have a shorter path via ISP B and so
that link will be used to send packets to that destination.
If one link fails then of course all destinations paths are shortest through
the remaining link and that's hw you achieve the circuit resiliency or
redundancy that you mentioned.
Darren
jeongwoo park wrote:
> Hellow group!!
> According to cisco press book, when company has two connections active to
> two different ISPs, BGP should be used.
> Could anybody tell me what is the result of connecting two active
> connections to two different ISPs?
> I know that one connection should be used as a backup line only while the
> other is active in order not to use BGP.
> Thanks in advance.
>
> ........................................................
> iWon.com http://www.iwon.com why wouldn't you?
> ........................................................
>
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