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 <[EMAIL PROTECTED]> 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 <[EMAIL PROTECTED]> 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 <[EMAIL PROTECTED]> 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. > > >>> > > >>> -------------------------------------------------------------------- > > >>> ---- > > >>> > > >>> _______________________________________________ > > >>> cisco-nsp mailing list [email protected] > > >>> https://puck.nether.net/mailman/listinfo/cisco-nsp > > >>> archive at http://puck.nether.net/pipermail/cisco-nsp/ > > >> > > >> _______________________________________________ > > >> cisco-nsp mailing list [email protected] > > >> https://puck.nether.net/mailman/listinfo/cisco-nsp > > >> archive at http://puck.nether.net/pipermail/cisco-nsp/ > > >> > > > > > > > > > > > > -- > > > === > > > Support www.gawadkalinga.org > > > _______________________________________________ > > > cisco-nsp mailing list [email protected] > > > https://puck.nether.net/mailman/listinfo/cisco-nsp > > > archive at http://puck.nether.net/pipermail/cisco-nsp/ > > > > > > > -- > === > Support www.gawadkalinga.org > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ > -- Raymond Macharia _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
