The memory is needed to store and be able to retrieve
from the routing table as fast as possible.  Since
with BGP you get all the routes on the net (which is
quite elarge) they recommend 128MB.  

Now if you want to use less RAM you can.  That is, if
you have the ISP limit the numner of routers they are
advertising to you.  If you limit this to just a
default route advertisment from the ISP you can run
this on a 2600 with less than 64MB (this could give
you the ISP redundancy that you may be looking for.)

However I would suggest getting a 3600 series router
(or better yet 2 of them for redundancy) and getting
full routes so you can control things you may want
with BGP.

Moe Tavakoli

--- suaveguru <[EMAIL PROTECTED]> wrote:
> Is 64mb enough?
> 
> 
> regards,
> 
> suaveguru
> --- John Neiberger <[EMAIL PROTECTED]> wrote:
> > why not a 3640?  I've got BGP running on a 3640
> and
> > the router barely knows
> > that it's turned on most of the time.  The
> processor
> > usage is very low and
> > I've had zero problems so far.  I do have 128 MB
> of
> > DRAM, though.  That is
> > necessary.
> > 
> > >  >From: "John Gesualdi" <[EMAIL PROTECTED]>
> > >  >Reply-To: "John Gesualdi" <[EMAIL PROTECTED]>
> > >  >To: "[EMAIL PROTECTED]"
> > <[EMAIL PROTECTED]>
> > >  >Subject: Which Router for BGP4 ??
> > >  >Date: Tue, 16 Jan 2001 10:40:18 +0000
> > >  >
> > >  >     I need to run BGP4 with my ISP. Which
> > router would you recommend I
> > >  >purchase? Should I go with a 3620,3640 or a
> > 2650,2651?  Thanks.
> > >  
> > >  None of the above, unless you want to filter
> just
> > about everything that's
> > 
> > >  useful.  You'll need about 128Meg for the full
> > table IIRC.
> > >  
> > >  
> > >  Why do you *need* to run BGP4?
> > >  
> > >  Rob./
> > >  
> > >  >
> > >  >--
> > >  >
> > >  >
> > >  >John A. Gesualdi,    CCNP, CCDP
> > >  >[EMAIL PROTECTED]
> > >  >The Providence Journal Company
> > >  >Phone (401)277-8133
> > >  >Pager (401)785-6938
> > >  >
> > >  >
> > >  >_________________________________
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> > >  
> > > 
> >
>
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=====
_____________________________________________
Moe

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