Brocade Virtual ADX Switch and Router Guide (Supporting ADX v03.1.00) - Manual (Page 247)

Brocade Virtual ADX Switch and Router Guide 233
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Configuring BGP4 neighbors
8
Virtual ADX(config)# router bgp
Virtual ADX(config-bgp-router)# no auto-shutdown-new-neighbors
Syntax: [no] auto-shutdown-new-neighbors
The default state for auto shutdown of BGP4 neighbors is disabled.
NOTE
When the auto-shutdown-new-neighbors value is changed, the value of the shutdown parameter for
any of the existing configured neighbors is not changed. Any new BGP4 neighbor configured after
the setting of the auto-shutdown-new-neighbors command will have the shutdown state set to the
current value of the auto-shutdown-new-neighbors command.
Using the auto shutdown of BGP4 neighbors during a configuration
To control when a newly-configured BGP4 neighbor establishes a BGP4 session, use the
auto-shutdown-new-neighbors command.
Virtual ADX(config)# router bgp
Virtual ADX(config-bgp-router)# auto-shutdown-new-neighbors
Virtual ADX(config-bgp-router)# neighbor 10.1.1.1 remote-as 200
Once all of the BGP4 neighbor configuration parameters are configured, use the following
commands to establish the BGP4 session.
Virtual ADX(config)# router bgp
Virtual ADX(config-bgp-router)# no neighbor 10.1.1.1 shutdown
Removing route dampening from suppressed routes
You can selectively unsuppress specific routes that have been suppressed due to aggregation, and
allow these routes to be advertised to a specific neighbor.
In this example, the aggregate-address command configures an aggregate address of 10.1.0.0
255.255.0.0. and the summary-only parameter prevents the device from advertising more specific
routes contained within the aggregate route.
Entering a show ip bgp route command for the aggregate address 10.1.0.0/16 shows that the
more specific routes aggregated into 10.1.0.0/16 have been suppressed. In this case, the route to
10.1.44.0/24 has been suppressed. If you enter this command, the display shows that the route is
not being advertised to the BGP4 neighbors.
Virtual ADX(config-bgp-router)# aggregate-address 10.1.0.0 255.255.0.0 summary-
Virtual ADX(config-bgp-router)# show ip bgp routes 10.1.0.0/16 longer-prefixes
Number of BGP Routes matching display condition : 2
Status A:AGGREGATE B:BEST b:NOT-INSTALLED-BEST C:CONFED_EBGP D:DAMPED
E:EBGP H:HISTORY I:IBGP L:LOCAL M:MULTIPATH S:SUPPRESSED F:FILTERED
Prefix Next Hop Metric LocPrf Weight Status
1 10.1.0.0/16 0.0.0.0 101 32768 BAL
AS_PATH:
2 10.1.44.0/24 10.2.0.1 1 101 32768 BLS
AS_PATH: