Brocade Virtual ADX Switch and Router Guide (Supporting ADX v03.1.00) User Manual

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Brocade Virtual ADX Switch and Router Guide

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Displaying BGP4+ information

9

For example, to display details about routes received from neighbor 2001:db8:2000:1:1::1, enter
the following command at any level of the CLI.

Weight

The value that this Virtual ADX associates with routes from a specific neighbor.
For example, if the Virtual ADX receives routes to the same destination from
two BGP4+ neighbors, the Virtual ADX refers the route from the neighbor with
the larger weight.

Status

The advertised 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.
b – NOT-INSTALLED-BEST – BGP4+ has determined that this is the optimal
route to the destination but did not install it in the IPv6 route table because the
Virtual ADX device received better routes from other sources (such as OSPFv3
or static IPv6 routes).
D – DAMPED. This route has been dampened (by the route dampening
feature), and is currently unusable.
E – EBGP. The route was learned through a device in another AS.
H – HISTORY. Route dampening is configured for this route, and the route has a
history of flapping and is unreachable now.
I – IBGP. The route was learned through a device in the same AS.
L – LOCAL. The route originated on this Virtual ADX device.
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 IPv6 route table.

S – SUPPRESSED. This route was suppressed during aggregation and thus is
not advertised to neighbors.
F – FILTERED. This route was filtered out by BGP4+ route policies on the Virtual
ADX device, but the Virtual ADX saved updates containing the filtered routes.

TABLE 15

Summary of route information received from a BGP4+ neighbor (Continued)

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