in no particular order of importance, and for no particular reason. 1) redistributing classful protocols into classless protocols and visa versa a) getting smaller subnets to match a longer boundary ( subnets with longer prefixes ) b) dealing with larger subnets than the classless boundary permits ( dealing with shorter prefixes )
2) filtering can be accomplished by: a) distribute-lists b) route-maps c) limiting advertisements to certain interfaces d) limiting advertisements to certain neighbors 3) distribute-lists can reference: a) access-lists b) particular neighbors ( gateways ) c) ip prefix-lists 4) route-maps can: a) reference access-lists b) reference interfaces c) reference ip prefix-lists d) reference metric values ( intriguing - have to look into this ) e) route tags 5) additionally, different protocols have their bells a) ospf - summary-address ( to summarize the routes redistributed into ospf ) b) others - match ospf metrics, route types e.g. E1, E2 c) others - match IS-IS route level types e.g. level-1, level-2 just some idle thoughts -- www.chuckslongroad.info like my web site? take the survey! Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=55748&t=55748 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]