[c-nsp] BGP hardware requirements

[Raymond Macharia]

In my experience 256 is the absolute minimum, but if you are planning to
receive the entire routing table please get 1GB.
BGP is more a function of memory and not link size. CPU will only come into
play if you have frequent BGP routing table updates.


On 9/6/07, Dracul <chris.garzon at gmail.com> wrote:
>
> Thanks for yout input stephen!
>
> I will be running BGP for Internet access. I need to route a /24 or /23
> public IP address to the network.
> config for bandwidth would be on one site is 2x1MB link and on another
> site
> is  1x1MB and 1x2MB link.
> both are using Cisco 2851 routers.
>
> chris
>
> On 9/2/07, Stephen Wilcox <steve.wilcox at packetrade.com> wrote:
> >
> > Hmm I have to express some concern over the summary of responses.
> >
> > The responders dont know much about your implementation, when asked
> > 'will this router run BGP' the answer was yes but that doesnt mean
> > that the router will do its job correctly.
> >
> > What isnt know is what you are trying to acheive - are you running
> > BGP for internet access or a private network, do you intend to load
> > full BGP tables or just take defaults. If you only have 2x2Mb
> > circuits what is it doing to need BGP..
> >
> > I would suggest that a 2821 is a small router and is good for low
> > bandwidth edge applications. If you are needing to multihome then I
> > would strongly suggest you take default routes and do not try to load
> > full or partial BGP tables, the reduction in functionality is minor
> > compared to the increased stability.
> >
> > Steve
> >
> > On 2 Sep 2007, at 02:55, Dracul wrote:
> >
> > > Thanks for the inputs all. 1MB and 1MB link, 2MB and 1MB  bandwidth
> > > for BGP
> > > would also
> > > not pose a problem implementing right?
> > >
> > > On 8/31/07, Hyunseog Ryu <r.hyunseog at ieee.org> wrote:
> > >>
> > >> I agree on Mark's assessment for memory upgrade.
> > >> If you are concerned about cost, you can find third party memory from
> > >> kingston or some other well-known manufacturers.
> > >> It is good idea to upgrade memory to max, so you don't have to
> > >> shutdown
> > >> the router to upgrade it again.
> > >> Also, BGP may use lots of memory with BGP prefix number increase,
> > >> and/or
> > >> sudden BGP routing leakage from public Internet.
> > >> So it's good to have memory upgrade to max when you have a chance.
> > >>
> > >> Hyun
> > >>
> > >>
> > >> Mark Tinka wrote:
> > >>> On Thursday 30 August 2007 17:51, Dracul wrote:
> > >>>
> > >>>
> > >>>> 1. My 2851 is already ok for 2x 2MB link BGP
> > >>>>
> > >>>
> > >>> Right.
> > >>>
> > >>>
> > >>>> 2. I need to upgrade my 256MB memory to 512 MB
> > >>>>
> > >>>
> > >>> I would say take the full 1GB. It's always best to max. out
> > >>> the memory on the routers so you have one less problem to
> > >>> worry about, especially if the price differential between 50%
> > >>> and 100% capacity is minimal.
> > >>>
> > >>>
> > >>>> 3. I need to replace my IOS to support a higher feature of
> > >>>> BGP possibly this:
> > >>>> ADVANCED ENTERPRISE
> > >>>> SERVICESc2800nm-adventerprisek9-mz.124-16.bin<http://tools.
> > >>>> cisco.com/ITDIT/CFN/Dispatch?act=feature&imageid=840591&plat
> > >>>> formFamily=268&featureSet=6&featureSelected=93,74,89,102&ava
> > >>>> ilSoftwares=IOS>
> > >>>>
> > >>>
> > >>> Right, would be best.
> > >>>
> > >>>
> > >>>> are my assumptions correct? By the way there would be no
> > >>>> issues if the links are transported through v.35
> > >>>> or fastethernet from the ISPs right?
> > >>>>
> > >>>
> > >>> Nope; as long as there are no link errors and the links are
> > >>> up :-).
> > >>>
> > >>> Cheers,
> > >>>
> > >>> Mark.
> > >>>
> > >>> --------------------------------------------------------------------
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-- 
Raymond Macharia