846 BigIron RX Series Configuration Guide
53-1002253-01
Displaying BGP4 information
26
These displays show the following information.
TABLE 130 BGP4 route information
This field... Displays...
Total number of BGP Routes The number of BGP4 routes.
Status codes A list of the characters the display uses to indicate the route’s 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’s output.
Prefix The network prefix and mask length.
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.
NOTE: B – BEST. BGP4 has determined that this is the optimal route to
the destination.
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 device
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 device.
NOTE: 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”.
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.
Age The last time an update occurred.
Next_Hop The next-hop router for reaching the network from the device.
Learned from Peer The IP address of the neighbor that sent this route.
Local_Pref 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 – 4294967295.
MED The route’s metric. If the route does not have a metric, this field is
blank.
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