[c-nsp] 2821 for BGP?

[Brian Desmond]

I have 2821s with a full table and partial routes from ISPs in them -
almost 300K routes. They're fine. They get CPU bound if you try to
provide more than one full view from them I've found. 

Thanks,
Brian Desmond
brian at briandesmond.com

c - 312.731.3132


> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-
> bounces at puck.nether.net] On Behalf Of Justin M. Streiner
> Sent: Monday, January 15, 2007 3:16 PM
> To: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] 2821 for BGP?
> 
> On Mon, 15 Jan 2007, miguel wrote:
> 
> > Hi all...
> >
> >    I know that the 38xx is the default router recommended for BGP
> > applications. However, I was wondering if any of you have been
> working
> > with the 2821 (or 2811) with BGP. I'm worry about CPU usage.
> > So this is the general config.
> 
> If you plan on doing just an active/standby setup with your upstream
> providers, you only need to take a default route via BGP from each of
> them.  I have (almost) exactly this configuration running at a number
> of
> client sites on a variety of routers.  A 2801 will handle this with no
> problems.
> 
> Rather than having I'm assuming static default routes internally, run
> IBGP
> between your two EBGP speaking routers.  Static routes can get messy.
> 
> Since you're only talking about a small handful of BGP routes, a small
> router like a 2800 series should work just fine.  Would I try to cram
a
> full Internet routing table into a 2800?  No.
> 
> jms
> 
> >
> > link1                            link2
> > |                                        |
> > |                                        |
> > R1 ----(HSRP)-----------R2
> > |                                        |
> > -------------LAN---------
> >
> >
> > Each router will have a BGP default route to link 1, and an
> alternative
> > route to link 2.
> > The maximum throughput will be 5-6Mbps
> >
> > Now, has anybody work with something like this (or similar) with
this
> > type of routers?
> >
> > PS: I'm not worry about memory, cos' I can upgrade it to 512.
> >
> >
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