I have made a mistake.My fault, I am sorry for not explaining the question properly on this wide-distribution. I knew it's not the Juniper/Cisco/Nortel, it is OSPF which by design don't support Unequal-cost load-balance. I only wanted to know the best practices if ever on juniper products for dealing/bring the traffic on unequal-cost links somthing like route-taging/policies etc etc Kindly, I am asking for plain OSPF, no MPLS/other stuff :)
Regards Iftikhar Ahmed On Sun, Nov 23, 2008 at 1:56 AM, Arda Balkanay <[EMAIL PROTECTED]>wrote: > OSPF only supports ECMP by design (Equal cost multipath). > > If you need unequal cost load balancing without EIGRP you will need an MPLS > TE solution. > All Juniper boxes running Junos perfectly support MPLS TE with load > balancing. > use several LSP's from the same source to the same destination with > different bandwidths then see the loadbalance based on bandwith ratios that > you've specified. > > > > > On Thu, Nov 20, 2008 at 12:37 PM, Masood Ahmad Shah > <[EMAIL PROTECTED]>wrote: > > > OSPFv2 does not support unequal-cost load balancing. > > > > Well, there is a way to do that; For example A customer have three E1's > to > > a > > remote site. Two are p-t-p and the other channel off of a E3. When you > > add > > E3; EIGRP choose E3, ignoring the other two E1's. Using the variance > > command you force EIGRP (Cisco) to utilize all three E1's. > > > > And now you could tune the OSPF metrics so that three paths would appear > > equal (as Farhan 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. > > > > Regards, > > Masood > > > > > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of Farhan Jaffer > > Sent: Thursday, November 20, 2008 12:59 PM > > To: Iftikhar Ahmed > > Cc: juniper-nsp@puck.nether.net > > Subject: Re: [j-nsp] Unequal-Cost Load Balancing for OSPF > > > > No. And it's not Juniper, It is OSPF which does not support unequal cost > > load balancing. > > > > EIGRP supports this behavior by variance factor. > > > > If EIGRP is open atandard (not Cisco proprietry) then Juniper will also > > support the same feature for EIGRP. > > > > However you can use some tricks to justify your scenario. > > > > > > Farhan > > > > > > > > On Thu, Nov 20, 2008 at 12:44 PM, Iftikhar Ahmed > > <[EMAIL PROTECTED]>wrote: > > > > > Hi, > > > > > > > > > Does Juniper support Unequal-Cost Load Balancing for OSPF, like the way > > > cisco do for EIGRP with commands like variance & maximum-paths etc > stuff? > > > > > > > > > > > > > > > Regards > > > Iftikhar Ahmed > > > _______________________________________________ > > > juniper-nsp mailing list juniper-nsp@puck.nether.net > > > https://puck.nether.net/mailman/listinfo/juniper-nsp > > > > > _______________________________________________ > > juniper-nsp mailing list juniper-nsp@puck.nether.net > > https://puck.nether.net/mailman/listinfo/juniper-nsp > > > > _______________________________________________ > > juniper-nsp mailing list juniper-nsp@puck.nether.net > > https://puck.nether.net/mailman/listinfo/juniper-nsp > > > _______________________________________________ > juniper-nsp mailing list juniper-nsp@puck.nether.net > https://puck.nether.net/mailman/listinfo/juniper-nsp > _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp
