On Sat, 1 Mar 2003, Cisco Nuts wrote: > Hello,If the clock rate has been configured for 64000 on one side of the > link (home lab), does that mean that the bandwidth needs to be set to > 64000 on both sides of the link using the bandwidth command so that > routing protocols like Ospf correctly compute the metrics? After all, > isn't the default bandwidth (1.544M) cosmetic inspite of the link having > been configured with clock rate = 64000?Thanks for the > clarification.Sincerely,CN
Yes, you're correct. Clocking (on the DCE side) specifies the bandwidth of a link while the 'bandwidth' statement is used for calculating routing netrics, the 'show int' load counter, etc. I can think of a few reasons why IOS doesn't just use the clocked amount as the bandwidth statement: - some interfaces (namely subinterfaces - ATM VCs, Frame VCs, etc) don't get a clock per se, but still need a concept of bandwidth. - A dodgy hack to allow people to easily modify routing metrics. - The DCE device may provide a clock that is higher than the actual link speed. A good example is an Async interface with a modem - the speed between the router and modem is 115Kbit, but the modem may only connect at 56Kbit. Rgds, - I. -- Ian Henderson CCNA, CCNP Senior Network Engineer, Chime Communications Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=64159&t=64147 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
