Brocade BigIron RX Series Configuration Guide - Manual (Page 1017)

BigIron RX Series Configuration Guide 939
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Configuring MBGP
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The ve <num> parameter specifies a virtual interface.
The null0 parameter is the same as dropping the traffic.
The distance <num> parameter sets the administrative distance for the route.
The <cost> parameter specifies the cost metric of the route.
Possible values are: 1 - 6
Default value: 1
NOTE
Regardless of the administrative distances, the device always prefers directly connected routes over
other routes.
Aggregating routes advertised to BGP4 neighbors
By default, the BigIron RX advertises individual MBGP routes for all the multicast networks. The
aggregation feature allows you to configure the device to aggregate routes in a range of networks
into a single CIDR number. For example, without aggregation, the device will individually advertise
routes for networks 207.95.10.0/24, 207.95.20.0/24, and 207.95.30.0/24. You can configure the
device to instead send a single, aggregate route for the networks. The aggregate route would be
advertised as 207.95.0.0/16.
To aggregate MBGP routes for 207.95.10.0/24, 207.95.20.0/24, and 207.95.30.0/24, enter the
following command.
BigIron RX(config-bgp-router)# aggregate-address 207.95.0.0 255.255.0.0
Syntax: aggregate-address <ip-addr> <ip-mask> [as-set] [summary-only] [suppress-map
<map-name>] [advertise-map <map-name>] [attribute-map <map-name>]
The <ip-addr> and <ip-mask> parameters specify the aggregate value for the networks.
The as-set parameter causes the router to aggregate AS-path information for all the routes in the
aggregate address into a single AS-path.
The summary-only parameter prevents the router from advertising more specific routes contained
within the aggregate route.
The suppress-map <map-name> parameter prevents the more specific routes contained in the
specified route map from being advertised.
The advertise-map <map-name> parameter configures the device to advertise the more specific
routes in the specified route map.
The attribute-map <map-name> parameter configures the device to set attributes for the
aggregate routes based on the specified route map.
NOTE
For the suppress-map, advertise-map, and attribute-map parameters, the route map must already
be defined.