Advanced Configuration and Management Guide

 

Table 10.9: BGP4 Network Information (Continued)

 

 

 

This Field...

 

Displays...

 

 

 

Weight

 

The value that this router associates with routes from a specific

 

 

neighbor. For example, if the router receives routes to the same

 

 

destination from two BGP4 neighbors, the router prefers the route

 

 

from the neighbor with the larger weight.

 

 

 

Path

 

The route’s AS path.

 

 

Note: This field appears only if you do not enter the route option.

 

 

 

Origin code

 

A character the display uses to indicate the route’s origin. The origin

 

 

code appears to the right of the AS path (Path field). The origin codes

 

 

are described in the command’s output.

 

 

Note: This field appears only if you do not enter the route option.

 

 

 

Status

 

The route’s 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 routing

 

 

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 routing 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.

 

 

Note: This field appears only if you enter the route option.

 

 

 

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