Like you said, if both circuits are the same bandwidth then load balancing will work. If they are not the same bandwidth, you can still load balance by manipulating the cost so that it is the same for both circuits, but once you reach the maximum bandwidth on the lower bandwidth circuit, the router is still going to try to load balance accross them even though one of the circuits is at maximum utilization. If the circuits are not the same bandwidth, then the primary/backup, with the primary being the higher bandwidth circuit, is your best bet.
-----Original Message----- From: Kerry Ogedegbe [ MTN - Portharcourt ] [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 19, 2003 7:53 AM To: [EMAIL PROTECTED] Subject: Load balancing / Backup Links with OSPF [7:63342] Hello People, We are deploying additional links as backups, and Load Balancing in my organization. One of the links is on our SDH backbone, and the second link is via Frame-Relay through a service provider We are running OSPF routing protocol. We are looking at 2 scenarios: 1 ) SDH Link as primary link, and the frame-relay link as a backup 2) Use both links for load balancing >From my investigations, in other to achieve Load balancing, with OSPF running, the bandwidth on both links has to be the same. And for Backup links, the OSPF cost has to be lower on the primary link, in order to force traffic over the primary link Any suggestions on how to solve this Cheers ___________________ Kerry Ogedegbe (Network Group) MTN-Nigeria Mobile: 0803 200 2399 Email: [EMAIL PROTECTED] [GroupStudy removed an attachment of type image/jpeg which had a name of Clear Day Bkgrd.JPG] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=63363&t=63342 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
