iBGP Scaling

isabel dias isabeldias1 at yahoo.com
Sat Mar 28 16:43:20 CDT 2009


Dave,

Your netblock might be a standard /19 or just a modest /30 :-) or you are just deploying IPv6 and therefore applied for one of the most recent RIPE assigments. 
Do you have different AS private/public numbers running on your network? 
filtering IGP routes ....part pf the OSPF design would be to find out how many areas you need to have LSA types ...or just one area O all part of your routing policy or LCR policy in place. Or just go for ISIS ....and then you have to think about L2/L1 bounderies. 

Can you be more specific on the question?

.//ID

--- On Sat, 3/28/09, tt tt <tt_745 at yahoo.co.uk> wrote:
> From: tt tt <tt_745 at yahoo.co.uk>
> Subject: iBGP Scaling
> To: nanog at nanog.org
> Date: Saturday, March 28, 2009, 6:13 PM
> Hi List,
> 
> We are looking to move our non infrastructure routes into
> iBGP to help with our IGP scalability (OSPF).  We already
> run full BGP tables on our core where we connect to multiple
> upstream and downstream customers.  Most of our aggregation
> and edge routers cannot hold full tables and it's
> certainly not possible to upgrade them. Is there any reason
> why we shouldn't filter iBGP routes between our core and
> aggregation layers (we plan to use route reflectors) or
> should we be look at using a private AS number per POP?
> 
> Thanks
> 
> Dave


      




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