Dell PowerConnect B-FCXs Configuration Guide - Page 1127

Displaying BGP4 information 30 These displays show the following information. TABLE 190 BGP4 route information Field Description Total number of BGP Routes Status codes Prefix Status Age Next_Hop Learned from Peer Local_Pref MED Origin The number of BGP4 routes. A list of the characters the display uses to indicate the route status. The status code is appears in the left column of the display, to the left of each route. The status codes are described in the command output. The network prefix and mask length. The route status, which can be one or more of the following: • A - AGGREGATE. The route is an aggregate route for multiple networks. • B - BEST. BGP4 has determined that this is the optimal route to the destination. NOTE: If the "b" is shown in lowercase, the software was not able to install the route in the IP route table. • b - NOT-INSTALLED-BEST. The routes received from the neighbor are the best BGP4 routes to their destinations, but were nonetheless not installed in the IP route table because the Layer 3 Switch received better routes from other sources (such as OSPF, RIP, or static IP routes). • C - CONFED_EBGP. The route was learned from a neighbor in the same confederation and AS, but in a different sub-AS within the confederation. • D - DAMPED. This route has been dampened (by the route dampening feature), and is currently unusable. • H - HISTORY. Route dampening is configured for this route, and the route has a history of flapping and is unreachable now. • I - INTERNAL. The route was learned through BGP4. • L - LOCAL. The route originated on this Layer 3 Switch. • M - MULTIPATH. BGP4 load sharing is enabled and this route was selected as one of the best ones to the destination. The best route among the multiple paths also is marked with "B". NOTE: If the "m" is shown in lowercase, the software was not able to install the route in the IP route table. • S - SUPPRESSED. This route was suppressed during aggregation and thus is not advertised to neighbors. The last time an update occurred. The next-hop router for reaching the network from the Layer 3 Switch. The IP address of the neighbor that sent this route. The degree of preference for this route relative to other routes in the local AS. When the BGP4 algorithm compares routes on the basis of local preferences, the route with the higher local preference is chosen. The preference can have a value from 0 through 4294967295. The route metric. If the route does not have a metric, this field is blank. The source of the route information. The origin can be one of the following: • EGP - The routes with this set of attributes came to BGP through EGP. • IGP - The routes with this set of attributes came to BGP through IGP. • INCOMPLETE - The routes came from an origin other than one of the above. For example, they may have been redistributed from OSPF or RIP. When BGP4 compares multiple routes to a destination to select the best route, IGP is preferred over EGP and both are preferred over INCOMPLETE. PowerConnect B-Series FCX Configuration Guide 53-1002266-01 1085