North American Network Operators Group

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Re: Multiple BGP sessions between the same router pairs at IXPs

Alex Bligh wrote:

> then only one peering session will come up, as routers only
> support one BGP session with any given router ID.

You can get both sessions up, but you'll only use one set of
routes, which if you don't toy with any knobs, will be the
one with the lower router ID.  However, you can use BGP max
paths and set it to 2, and both routes will be sent to 
the route table.  Or you could use eBGP multihop.

/Sean Butler