[nsp] Is 128MB enough for a full BGP table on a 7206VXR?

[Streiner, Justin]

On Tue, 24 Feb 2004, Beprojects.com wrote:

> Interestingly enough, I have a 3640 with 128M and 2 full feeds and it has
> plenty of free DRAM (~ 18M).  However, I have a 7500 with 2 full feeds and
> 256M and it only has about 80M free.

You can tweak your shared-memory pools on a 3640 to allocate less of
the memory to I/O, which frees up more for processor tasks like BGP.  I've
had to do this more than once...  Also, the 3600 images are often have a
smaller memory footprint than a comparable 7200 image.

jms

> ----- Original Message -----
> From: "Dave O'Shea" <daveoshea at sbcglobal.net>
> To: "Vincent De Keyzer" <vincent at dekeyzer.net>; <cisco-nsp at puck.nether.net>
> Sent: Tuesday, February 24, 2004 9:42 AM
> Subject: Re: [nsp] Is 128MB enough for a full BGP table on a 7206VXR?
>
>
> > Barely. Looking at a 7206 that has one full and one
> > partial BGP feed, cef but no netflow or accounting, I
> > see 114mb used, running 12.2(15)something-or-other.
> >
> > With a carefully selected release from somewhere
> > around 12.0(5) or so, you might be able to get away
> > with it. but if you can scrounge the extra money, I
> > would really recommend 256mb.
> >
> > --- Vincent De Keyzer <vincent at dekeyzer.net> wrote:
> > > Hello,
> > >
> > > I have just loaded a full BGP table on a Cisco
> > > 7206VXR (NPE-300) with 128MB
> > > RAM.
> > >
> > > However, I would like your opinion before bringing
> > > it into the prod network:
> > > is it enough to avoid problems?
> > >
> > > And BTW, what is this "I/O-2" memory that I see down
> > > there?
> > >
> > > Vincent
> > >
> > > __________________________________
> > >
> > > Router#sh memory
> > >                 Head    Total(b)     Used(b)
> > > Free(b)   Lowest(b)
> > > Largest(b)
> > > Processor   61D4AC00    95114240    73125232
> > > 21989008    21971088
> > > 21965068
> > >       I/O   20000000    33554452      227740
> > > 33326712    33326712
> > > 33325532
> > >     I/O-2    7800000     8388620     7926532
> > > 462088      462088
> > > 461756
> > >
> > >
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