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zhall
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BGP; best practices in accepting and announcing routes

Mon Dec 10, 2012 10:19 pm

Hi, I'm fairly new to all of this so I was just mostly hoping someone could point me in the direction I need to start out in.

I currently have BGP running at our edge, announcing routes and so forth with our backbone providers. All the way on the other side of my network is a client who also wishes to announce BGP routes.

What's the best setup for making this happen? Currently I don't have any dynamic routing setup but I can implement that if it's the best way to get it done. I.e. do I tunnel the client back to our edge BGP router? Do I setup some sort of dynamic routing that picks up the routes from a BGP router setup infront of the client?
 
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wulfgard
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Re: BGP; best practices in accepting and announcing routes

Mon Dec 10, 2012 11:54 pm

setup a router in front of your customer for BGP ( it becomes an edge router )
apply filters on:

1) outbounf AS prefix so you only announce your AS and the one of your customer ( remember it can prepend )
2) outbound prefix must be filtered so you announce your IPV4 / IPV6 prefix and the ones from your customer

be aware that upstreams may base their own filter rules upon the ARIN / RIPE informations that
you and your customer are providing

any way you must also filter AS and prefix announced by your customer or you may experience routing issues

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