Reliability and load are dynamically calculated. They change frequently. Their changes could cause the routing table to change too, maybe more than you would want. Delay and bandwidth are not dynamically calculated.
Priscilla At 10:28 PM 4/20/02, Michael L. Williams wrote: >Well, reason I ask is that I was looking over a study sheet that lists the >routing protocols, their type (link-state/distance-vector), their metric, >etc, and it listed Bandwidth, Delay, Load, and Reliability as the components >for (E)IGRP metric calculation, but something in the back of mind was going >"Where's MTU?". So I started digging around Cisco's site, and found >documents showing the formula for calculation (only using the 4 components >listed above) but then found all of the other things regarding >redistribution and default metrics that tell you to use all five (the four >above plus MTU). > >But yes, I've often read that it's best to leave K1 = K3 = 1 and K2 = K4 = >K5 = 0. However, I can't see why changing these values would result in >frequent recalculation of the topology table. Wouldn't the topology table >only change when there are changes to the topology? (Which it seems to me >wouldn't have anything to do with the values of K1-K5 used in the metric >calculation). > >Mike W. > >"Steve Watson" wrote in message >[EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > Good question!! Not sure this is what you're looking for but it also > > says that it is based on five criteria, bandwidth and delay are the > > default criteria; reliability, loading and MTU are additional criteria > > are NOT RECOMMENDED FOR USE because they result in frequent > > recalculation of the topology table. > > > > Steve ________________________ Priscilla Oppenheimer http://www.priscilla.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=42110&t=42103 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
