Re: [WISPA] OSPF maximums
On Thu, 2009-10-29 at 13:06 -0500, Butch Evans wrote: > So, the short answer is: Keep the number of interfaces around (or > below) 100 or so. I should add that I DO have customers who have well over 150 ROUTERS with multiple interfaces in a single area. This limit is not a "hard limit". The other reality is that when you reach that number of routers, it is very likely that a network should be relatively easy to reconfigure into multiple areas. -- * Butch Evans * Professional Network Consultation* * http://www.butchevans.com/* Network Engineering * * http://www.wispa.org/ * Wired or Wireless Networks * * http://blog.butchevans.com/ * ImageStream, Mikrotik and MORE! * WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] OSPF maximums
On Thu, 2009-10-29 at 09:44 -0600, Kevin Neal wrote: > I'm pretty sure the limit is just CPU/Memory. We currently 112 > routing entries in one of our networks, this is on a network with 24 > OSPF routers. Number of routes is not that much of a problem. I have one customer with about 8k OSPF routes (he does pppoe). You can do BGP with nearly 300K routes without problems. -- * Butch Evans * Professional Network Consultation* * http://www.butchevans.com/* Network Engineering * * http://www.wispa.org/ * Wired or Wireless Networks * * http://blog.butchevans.com/ * ImageStream, Mikrotik and MORE! * WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] OSPF maximums
On Thu, 2009-10-29 at 10:33 -0500, Jory Privett wrote: > For all of you routing gurus out there, On MikroTiks version, > or any other brand, of OSPF what is the maximum number of routes > or routers in a single OSPF Area? Is this only limitied by CPU/Memory > or is there something else that dictates it? While there may be an actual maximum number, I cannot find that in the standard. In practice, however, I have found that keeping the number of interfaces in an area under 100 to be helpful. Realistically, that is a very large number. Also, it is important to note the difference between "interfaces" and "routers" in OSPF networks. An "OSPF Router" (which can be viewed in Mikrotik in the GUI) is a device that is participating in the OSPF network on any interface. An "OSPF interface" is what gets counted as a "hop" and is, therefore, part of the path cost calculation. So, the short answer is: Keep the number of interfaces around (or below) 100 or so. I have seen SOME people who recommend under 200 ROUTERS per AS. I have not run into any sorts of limitations in that regard, but there are only a few networks that I work on that have enough routers to even reach that number. :-) -- * Butch Evans * Professional Network Consultation* * http://www.butchevans.com/* Network Engineering * * http://www.wispa.org/ * Wired or Wireless Networks * * http://blog.butchevans.com/ * ImageStream, Mikrotik and MORE! * WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] OSPF maximums
Using StarOS we have about 480 subnet routes propagating throughout our network. This represents approximately 220 routed devices. Matt Larsen vistabeam.com Dennis Burgess wrote: > I think a good OSPF single area would be around 75 routers. Over that > you get quite a bit of traffic. Not saying that this is a hard limit, > just a rule of thumb. > > --- > Dennis Burgess, CCNA, A+, Mikrotik Certified Trainer > WISPA Board Member - wispa.org > Link Technologies, Inc -- Mikrotik & WISP Support Services > WISPA Vendor Member > Office: 314-735-0270 Website: http://www.linktechs.net > LIVE On-Line Mikrotik Training > Author of "Learn RouterOS" > > > -Original Message- > From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On > Behalf Of Jory Privett > Sent: Thursday, October 29, 2009 10:33 AM > To: wireless@wispa.org > Subject: [WISPA] OSPF maximums > > For all of you routing gurus out there, On MikroTiks version, or any > other brand, of OSPF what is the maximum number of routes or routers in > a single OSPF Area? Is this only limitied by CPU/Memory or is there > something else that dictates it? > > > Jory > > > > > WISPA Wants You! Join today! > http://signup.wispa.org/ > > > > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > > > > WISPA Wants You! Join today! > http://signup.wispa.org/ > > > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > > WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] OSPF maximums
I think a good OSPF single area would be around 75 routers. Over that you get quite a bit of traffic. Not saying that this is a hard limit, just a rule of thumb. --- Dennis Burgess, CCNA, A+, Mikrotik Certified Trainer WISPA Board Member - wispa.org Link Technologies, Inc -- Mikrotik & WISP Support Services WISPA Vendor Member Office: 314-735-0270 Website: http://www.linktechs.net LIVE On-Line Mikrotik Training Author of "Learn RouterOS" -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Jory Privett Sent: Thursday, October 29, 2009 10:33 AM To: wireless@wispa.org Subject: [WISPA] OSPF maximums For all of you routing gurus out there, On MikroTiks version, or any other brand, of OSPF what is the maximum number of routes or routers in a single OSPF Area? Is this only limitied by CPU/Memory or is there something else that dictates it? Jory WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] OSPF maximums
I'm pretty sure the limit is just CPU/Memory. We currently 112 routing entries in one of our networks, this is on a network with 24 OSPF routers. -Kevin On Thu, Oct 29, 2009 at 9:33 AM, Jory Privett wrote: > For all of you routing gurus out there, On MikroTiks version, or any other > brand, of OSPF what is the maximum number of routes or routers in a single > OSPF Area? Is this only limitied by CPU/Memory or is there something else > that dictates it? > > > Jory > > > > WISPA Wants You! Join today! > http://signup.wispa.org/ > > > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] OSPF maximums
If I understand correctly, There is no limit. But I vaguely remember something about OSPF being unstable with 500+ routers. As you start to get to much crosstalk overhead. If its a big area you would need to do like OSPF and BGP I don't remember how it went, something like transit routes with ospf and advertise the customer space with bgp... Nick Olsen Brevard Wireless (321) 205-1100 x106 From: "Jory Privett" Sent: Thursday, October 29, 2009 11:33 AM To: "wireless@wispa.org" Subject: [WISPA] OSPF maximums For all of you routing gurus out there, On MikroTiks version, or any other brand, of OSPF what is the maximum number of routes or routers in a single OSPF Area? Is this only limitied by CPU/Memory or is there something else that dictates it? Jory WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
