Dell Force10 Z9000 FTOS Configuration Guide for Z9000 System - Page 220

www.dell.com | support.dell.com To view which routes are dampened (non-active), use the show ip bgp dampened-routes command in EXEC Privilege mode. Use the following command in EXEC Privilege mode to clear information on route dampening and return suppressed routes to active state. Command Syntax clear ip bgp dampening [ip-address mask] Command Mode Purpose EXEC Privilege Clear all information or only information on a specific route. Use the following command in EXEC and EXEC Privilege mode to view statistics on route flapping. Command Syntax show ip bgp flap-statistics [ip-address [mask]] [filter-list as-path-name] [regexp regular-expression] Command Mode Purpose EXEC EXEC Privilege View all flap statistics or for specific routes meeting the following criteria: • ip-address [mask]: enter the IP address and mask • filter-list as-path-name: enter the name of an AS-PATH ACL. • regexp regular-expression: enter a regular express to match on. By default, the path selection in FTOS is deterministic, that is, paths are compared irrespective of the order of their arrival. You can change the path selection method to non-deterministic, that is, paths are compared in the order in which they arrived (starting with the most recent). Furthermore, in non-deterministic mode, the software may not compare MED attributes though the paths are from the same AS. Use the following command in CONFIGURATION ROUTER BGP mode to change the path selection from the default mode (deterministic) to non-deterministic. Command Syntax bgp non-deterministic-med Command Mode Purpose CONFIG-ROUTER-BGP Change the best path selection method to non-deterministic. Note: When you change the best path selection method, path selection for existing paths remains unchanged until you reset it by entering the clear ip bgp command in EXEC Privilege mode. 220 | Border Gateway Protocol