HP 6125G HP 6125G & 6125G/XG Blade Switches Layer 3 - IP Routing Confi - Page 152

Configuring the default local preference The local preference is used to determine the best route for traffic leaving the local AS. When a BGP router obtains from several IBGP peers multiple routes to the same destination but with different next hops, it considers the route with the highest local preference as the best route. This task allows you to specify the default local preference for routes sent to IBGP peers. To specify the default local preference: Step 1. Enter system view. 2. Enter BGP view. Command system-view bgp as-number 3. Configure the default local preference. default local-preference value Remarks N/A N/A Optional. 100 by default. Configuring the MED attribute MED is used to determine the best route for traffic going into an AS. When a BGP router obtains from EBGP peers multiple routes to the same destination but with different next hops, it considers the route with the smallest MED value as the best route if other conditions are the same. Configuring the default MED value Step 1. Enter system view. 2. Enter BGP view. 3. Configure the default MED value. Command system-view bgp as-number default med med-value Enabling the comparison of MED of routes from different ASs Remarks N/A N/A Optional. 0 by default. Step 1. Enter system view. 2. Enter BGP view. 3. Enable the comparison of MED of routes from different ASs. Command system-view bgp as-number compare-different-as-med Enabling the comparison of MED of routes from each AS Route learning sequence may affect optimal route selection. Remarks N/A N/A Not enabled by default. 142