Peering best practices advice needed.

Thu Dec 9 08:55:44 UTC 2004

Rich LOL !! thanks for your input :)

>From: Richard Irving <rirving at antient.org>
>To: Rolo Tomassi <rolotomassi32 at hotmail.com>
>CC: nanog at merit.edu
>Subject: Re: Peering best practices advice needed.
>Date: Wed, 08 Dec 2004 12:56:13 -0500
>
>Rolo Tomassi wrote:
>>Hi all,
>>
>>Please forgive the simplistic nature of the query..
>>
>>Basically my company is multi-homed with 2 different providers in the UK, 
>>and advertising a /18. Now some colleaguges in another part of the world 
>>want to break that /18 into two /19's and advertise one /19 and we 
>>advertise the other. This is fine, however we are NOT running IBGP in the 
>>core, therefore the UK customers in the /19 will not be able to reach the 
>>other /19 as there would be a loop detected through EBGP.
>
>    Pardon my simplistic solution, try dropping the /18, and -only-
>advertise the corresponding /19 from each region.
>
>>Now someone mentioned that we could use AS-LOOP-IN feature which will 
>>overcome this problem and allow us to route to each other via EBGP. I 
>>really think this is a bad idea but until we get an internal link - I dont 
>>see a way forward. So... anyone doing this currently in their network or 
>>have any "best practices" way round this. I want our company to be good 
>>Netizens but still be able to pass traffic between the 2 /19's.
>
>   See above. K.I.S.S. (No offense intended ;)
>
>>
>>Any help would be greatly appreciated.
>>
>>Rolo !
>>
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