This is kind of an off-the-wall question, is there a non-proprietary IGP that supports unequal-cost load balancing? Granted, you could tune the OSPF metrics so that two paths would appear equal (as others have pointed out) or you could use RIP, assuming that the hop count to reach the destination on both links is the same. In either case you still have equal cost load balancing on two unequal links, which will result in wasted bandwidth at best and a bottleneck at worst.
It seems to me that if this link is important enough that you need traffic going over both connections, then it's important enough for Ciscobreaker's organization to either purchase a second Cisco router to run EIGRP and redistribute if necessary, or it needs to upgrade or downgrade one of the WAN links to make them equal. Hal Logan Network Specialist / Adjunct Faculty Computing and Engineering Technology Manatee Community College > -----Original Message----- > From: Kane, Christopher A. [mailto:[EMAIL PROTECTED]] > Sent: Monday, November 26, 2001 11:29 AM > To: [EMAIL PROTECTED] > Subject: FW: OSPF Unequal load balancing? [7:27311] > > > I've scanned through John T. Moy's book but haven't found any > reference to > unequal load balancing. He only mentions equal-cost load > balancing. I'll > scan the RFC next. > > But, having thought about this for a minute. Wouldn't unequal > load balancing > break the idea behind OSPF? Isn't Dijkstra's Shortest Path > First algorithm > intended to find just that, the shortest path? I would think > that asking for > unequal load balancing would be in direct conflict behind the > algorithm that > is utilized for OSPF. > > Just some thoughts. > Chris > > -----Original Message----- > From: Kane, Christopher A. > Sent: Monday, November 26, 2001 11:12 AM > To: [EMAIL PROTECTED] > Subject: RE: OSPF Unequal load balancing? [7:27311] > > > You can read RFC 2328 or John T Moy's OSPF Anatomy of a > Routing Protocol to > find that answer. I'll dig through them and see if I can find > you an answer > if no one else comes up with one sooner. > > HTH, > Chris > > -----Original Message----- > From: Cisco Breaker [mailto:[EMAIL PROTECTED]] > Sent: Monday, November 26, 2001 10:08 AM > To: [EMAIL PROTECTED] > Subject: Re: OSPF Unequal load balancing? [7:27311] > > > As I said before I implemented equal load balancing on > Motorola and Cisco > what I want to know is, Is it possible to configure OSPF unequal load > balancing ? You are saying that OSPF unequal load balancing > can not be done > on cisco I know that. The reason why I asked the question is > cause I know > that cisco can not do but is it the OSPF behaviour not to > implement unequal > load balancing or is it belong to Cisco's OSPF implementation? > My guess is OSPF. > > Best regards, > > > ""Ralph Fudamak"" wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > I don't know how Motorola implements OSPF, but with Cisco's > > implementation you can not do unequal cost load balancing > with OSPF. This > > is not to say that you can't manually change the metrics on > the links to > > appear to be equal cost. Keep in mind that this load > balancing is *equal* > > then. Your slow link will get as much traffic as your fast > one, which > could > > cause a bottleneck. See if there is some command to set a > default cost on > > the link, then set them both the same. > > > > Hope this helps > > > > ""Cisco Breaker"" wrote in message > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > I implemented OSPF load balancing but never done unequal > load balancing. > > My > > > customer wants Unequal loadbalancing on Motorola routers. > As I know > > Unequal > > > load balancing cant be implemented on Cisco without > policy-map? Any > > > suggestions or any info? > > > > > > Best regards, Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=27344&t=27311 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
