The general guidance for EIGRP is less than 30 neighbors, and, within my organizations, we try to limit to 25/26. The issues are numerous and, of course, specific to your network, but EIGRP is a very active protocol when something fails. The CPU, memory and bandwidth required to resolve the new topology can be significant. Having said that, I have seen networks in the 100-125 neighbor range that worked for a while. I think all of them have now broken things up into smaller areas.
You may want to look at ODR, statics, RIP v2 and other methodologies before accepting this customer demand. You may also want to send the 'reason' the customer is asking for this - VLSM, rest of net is EIGRP, operational experience, Cisco marketing... Good luck. --- MADMAN wrote: > I don't think you'll find a hard doc as there are > too mny variables. > In what you are describing I would feel fine using > EIGRP, just make sure > you have a decent router with plenty, i.e. not the > minimum recommended, > memory. > > my gut feeling... > > Dave > > > "Robertson, Douglas" wrote: > > > > This is actually for a practical issue, I have a > customer that wants to > > implement +-400 remote sites connected with > redundancy to two core routers. > > Each router will have three T1's and the 400 sites > will be split between > the > > three T1's. This still brings the EIGRP to +-133 > EIGRP neighbors per > > interface and 400 neighbors per router. The > customer wants to run EIGRP. I > > am asking this question to determine if this will > be an issue and to find > > documentation to back this up. The alternative > would be to run OSPF or BGP > > but I need backup info to get the customer to > change. > > > > Thanks Doug > > > > -----Original Message----- > > From: MADMAN [mailto:[EMAIL PROTECTED]] > > Sent: Tuesday, January 15, 2002 4:49 PM > > To: [EMAIL PROTECTED] > > Subject: Re: EIGRP neighbor limitations [7:32058] > > > > I don't know about a hard limit but me thinks > you'll hit the practical > > limit first anyway:) Is this an acedemic > question??? > > > > Dave > > > > "Robertson, Douglas" wrote: > > > > > > Does anyone know of limitation in the amount of > EIGRP neighbors on a > > router. > > > If there is, is this a limitation per physical > interface or a limitation > > > per router. I found a document on CCO a couple > of months ago that > > mentioned > > > these limits but I have now searched and > searched but cannot find that > > > document again. > > > > > > Appreciate any input > > > > > > D. Robertson > > -- > > David Madland > > Sr. Network Engineer > > CCIE# 2016 > > Qwest Communications Int. Inc. > > [EMAIL PROTECTED] > > 612-664-3367 > > > > "Emotion should reflect reason not guide it" > -- > David Madland > Sr. Network Engineer > CCIE# 2016 > Qwest Communications Int. Inc. > [EMAIL PROTECTED] > 612-664-3367 > > "Emotion should reflect reason not guide it" [EMAIL PROTECTED] ===== Robert Padjen __________________________________________________ Do You Yahoo!? Send FREE video emails in Yahoo! Mail! http://promo.yahoo.com/videomail/ Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=32324&t=32058 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
