ExhibitYou are troubleshooting an issue where traffic to 192.

The exhibit shows the output of the command  show ip bgp , which displays information about the BGP routes in the routing table 1 . The output shows two routes for the destination 192.168.10.0/24, one from R1 and one from R2.

The route from R1 has a local preference of 200, while the route from R2 has a local preference of 100.  Local preference is a BGP attribute that indicates the degree of preference for a route within an autonomous system (AS) 2 .  A higher local preference means a more preferred route 2 .

BGP uses a best path selection algorithm to choose the best route for each destination among multiple paths.  The algorithm compares different attributes of the routes in a specific order of precedence 3 .  The first attribute that is compared is weight, which is a Cisco-specific attribute that is local to the router 3 .  If the weight is equal or not set, the next attribute that is compared is local preference 3 .

In this case, both routes have the same weight of 0, which means that they are learned from external BGP (eBGP) peers 3 . Therefore, the next attribute that is compared is local preference.  Since R1’s route has a higher local preference than R2’s route, it is chosen as the best path and installed in the routing table 3 . The other attributes, such as origin code and AS path, are not considered in this case.