Hi, I would like to know what route should i accept from internet full or partial? if Partial then what routes should i accept? and how many route does my router have if i will go for Partial routing table? actually I am trying to understand it by concept... my organization is small but I want to know if it is large organization or small provider then what kind of routes do i need in my routing table? regards Devang Patel
Hi,
I would like to know what route should i accept from internet full or partial? if Partial then what routes should i accept? and how many route does my router have if i will go for Partial routing table?
actually I am trying to understand it by concept... my organization is small but I want to know if it is large organization or small provider then what kind of routes do i need in my routing table?
If you don't know, then you should probably ask your upstream to send you a default and leave it at that. Full routes means that you get a routing entry for every network connected to the Internet. There's some two hundred thousand (plus) of them. This can be stressful on both routers and inexperienced administrators, and is probably not all that useful unless you have multiple connections to the Internet. A default gets you just about the same thing. "Partial" doesn't make too much sense, unless you really don't want to talk to certain parts of the Internet, or you're supplementing it with a default route. You could potentially do this if you had, for example, a T1 to two different providers, and wanted some outgoing traffic to go over each link. In that case, most people would prefer to get full tables from each upstream and make local decisions. This requires properly resourcing your router; the "Cidr Report" that is frequently posted here will give you an idea about /current/ requirements in terms of table size, but it is not unreasonable to look for something that can handle 30-50% growth, plus IPv6 concerns. If you've got an existing router that can't hack it, but still need to balance over two connections, that's one scenario for "partial" routes. By definition, partial would be any number between 1 and the current number of available route prefixes, and would be determined by your choice of configurations. There are some really quite excellent books on routing on the Internet available, as well as extensive information in this list's archive. Avi also has some historical documents that are probably still good. Look around http://www.freedman.net/ ... JG -- Joe Greco - sol.net Network Services - Milwaukee, WI - http://www.sol.net "We call it the 'one bite at the apple' rule. Give me one chance [and] then I won't contact you again." - Direct Marketing Ass'n position on e-mail spam(CNN) With 24 million small businesses in the US alone, that's way too many apples.
devang patel wrote:
Hi,
I would like to know what route should i accept from internet full or partial? if Partial then what routes should i accept? and how many route does my router have if i will go for Partial routing table?
actually I am trying to understand it by concept... my organization is small but I want to know if it is large organization or small provider then what kind of routes do i need in my routing table?
regards Devang Patel
For small companies, I advise asking for "customer" routes. These are people directly connected to the upstream. Other than that, the default suffices. Roy
Your questions depend on several details specific to your organization, which you haven't really devulged. There are several decent books on the subject which I recommend that you invest in. see: * ISBN-10:* 0321127005 *ISBN-10:* 0596002548 http://www.oreilly.com/catalog/bgp/chapter/ch06.html -- this is a chapter from the second book which should wet your appetite a bit. Regards, --Justin devang patel wrote:
Hi,
I would like to know what route should i accept from internet full or partial? if Partial then what routes should i accept? and how many route does my router have if i will go for Partial routing table?
actually I am trying to understand it by concept... my organization is small but I want to know if it is large organization or small provider then what kind of routes do i need in my routing table?
regards Devang Patel _______________________________________________ NANOG mailing list NANOG@nanog.org http://mailman.nanog.org/mailman/listinfo/nanog
Hi,
I would like to know what route should i accept from internet full or partial? if Partial then what routes should i accept? and how many route does my router have if i will go for Partial routing table?
actually I am trying to understand it by concept... my organization is small but I want to know if it is large organization or small provider then what kind of routes do i need in my routing table?
Hi, If its only 1 provider, then probably taking just "default route" is necessary. If you have 2, then it depends on your setup. I prefer to always take full routes from upstreams, as long as there are good communities within that feed. This way I can vary what I accept or don't accept without the need to constantly contact the upstream. If not, then I have to fiddle more on my end, but I always keep the control. I personally run 2 routers (Ok, switches with routing code, so my memory footprint is severely limited) each with a link to a provider. I ask for full routes PLUS default route. Internally, I discard /24's on both links, and pref up the communities like customer and send them over to the other router with the default route. Saves me alot of memory, plus gives me alot of control. Tuc/TBOH
The nice thing about NANOG is that we have YEARS of on-line Video training to help you get up to speed. 1. Go to http://www.nanog.org/subjects.html (Index of Talks) 2. Look for materials on BGP. 3. Have fun learning from the best. My suggestion would be to watch last NANOG's BGP Tutorial. The nice thing about this is that you can E-mail the speaker to get clarifications. TO NANOG Community - We should really be pointed these FAQs to the resources/tools we've invested in building. I don't know whose idea it was to VOD everything, but it is an vast untapped store house of knowledge.
-----Original Message----- From: devang patel [mailto:devangnp@gmail.com] Sent: Friday, May 16, 2008 7:16 AM To: nanog@merit.edu Subject: [NANOG] Routing table for BGP
Hi,
I would like to know what route should i accept from internet full or partial? if Partial then what routes should i accept? and how many route does my router have if i will go for Partial routing table?
actually I am trying to understand it by concept... my organization is small but I want to know if it is large organization or small provider then what kind of routes do i need in my routing table?
regards Devang Patel _______________________________________________ NANOG mailing list NANOG@nanog.org http://mailman.nanog.org/mailman/listinfo/nanog
On Fri, May 16, 2008 at 11:00 AM, Barry Raveendran Greene <bgreene@senki.org> wrote:
The nice thing about NANOG is that we have YEARS of on-line Video training to help you get up to speed.
1. Go to http://www.nanog.org/subjects.html (Index of Talks)
2. Look for materials on BGP.
3. Have fun learning from the best.
My suggestion would be to watch last NANOG's BGP Tutorial. The nice thing about this is that you can E-mail the speaker to get clarifications.
TO NANOG Community - We should really be pointed these FAQs to the resources/tools we've invested in building. I don't know whose idea it was to VOD everything, but it is an vast untapped store house of knowledge.
I think there is a nanog-wiki that Lynda was poking at last even?? Maybe making sure there's a searchable form thingy there for the VOD catalog? -Chris
hello All, Yeah NANOG knowledge base is really great... thanks to all of you for your help... regards Devang Patel On Fri, May 16, 2008 at 10:25 AM, Christopher Morrow < morrowc.lists@gmail.com> wrote:
On Fri, May 16, 2008 at 11:00 AM, Barry Raveendran Greene <bgreene@senki.org> wrote:
The nice thing about NANOG is that we have YEARS of on-line Video
training
to help you get up to speed.
1. Go to http://www.nanog.org/subjects.html (Index of Talks)
2. Look for materials on BGP.
3. Have fun learning from the best.
My suggestion would be to watch last NANOG's BGP Tutorial. The nice thing about this is that you can E-mail the speaker to get clarifications.
TO NANOG Community - We should really be pointed these FAQs to the resources/tools we've invested in building. I don't know whose idea it was to VOD everything, but it is an vast untapped store house of knowledge.
I think there is a nanog-wiki that Lynda was poking at last even?? Maybe making sure there's a searchable form thingy there for the VOD catalog?
-Chris
participants (7)
-
Barry Raveendran Greene -
Christopher Morrow -
devang patel -
Joe Greco -
Justin Sharp -
Roy -
Tuc at T-B-O-H