SP Lab: BGP Route Selection
Ignore IBGP routes that are not synchronized
Ignore a route if the next hop is not known
Prefer the route with the largest weight
Prefer the route with the largest local preference
Prefer the route that was locally originated via network, aggregate or redistribution from an IGP
Prefer the route with the shortest AS path; if using bgp bestpath as-path ignore then skip this step: When using the as-set option for aggregated routes then the as_set counts as 1 regardless of the number of AS entries in the set; confederation sub AS numbers are not used to determine the AS-path length
© 2008 Cisco Systems, Inc. All rights reserved.