not directly related to electing DR/BDR, but i use loopbacks for management. it's the ip i associate in my hosts file for ssh access. also with loopbacks i can control the ip for easier troubleshooting since i use a numbering scheme where the 2nd octet indicates which physical location the router is in and the 3rd octet is what kind of function it serves (core vs distribution vs access); makes it a hell of a lot easier when viewing the ospf database and i wouldn't have this luxury otherwise.
luckily we don't have many ospf routers attached to ethernet links, though we do have a lot of sites spread out, so this is a fairly scalable way for me to control which router is a DR. bt ""Steven A. Ridder"" wrote in message news:[EMAIL PROTECTED].; | You can have a better numbering/identificaton process if you use loopback | numbers, rather than some arbitraty IP. | | -- | | RFC 1149 Compliant. | | | ""cclark"" wrote in message | news:[EMAIL PROTECTED].; | > In determining DR and BDR, OSPF will use the priority and the Router ID. I | > can change the Router ID by creating a loopback with a higher ID (IP | address | > right?). Why would I do this? Why would I not just change the priority of | > the router in question? If I want a specific router to be the DR, why not | > set it with a priority of 1 and set all the other routers to something | like | > 5? TIA. | > | > cc | | | | | Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=36776&t=36641 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
