Configuring Aggregate Addresses - Motorola BSR 2000 Configuration And Management Manual

Release 1.0

Configuring Aggregate Addresses

Using CIDR addressing, you can combine routes so that multiple routes are advertised
as a single route. CIDR replaces the concept of classes (such as Class A, Class B, and
Class C) with the concept of IP prefixes. An IP prefix is a network address that
indicates the number of bits that comprise the network number.
Use the following options to configure aggregate addresses:
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Use the aggregate-address command in Router Configuration mode to combine
multiple routes:
MOT(config-bgp)#aggregate-address {<A.B.C.D> <A.B.C.D>}
where:
A.B.C.D is the aggregate IP address.
A.B.C.D is the aggregate IP subnetwork mask.
Use the aggregate-address advertise-map command in Router Configuration
mode to identify the route map for selecting routes to be aggregated:
MOT(config-bgp)#aggregate-address {<A.B.C.D> <A.B.C.D>}
advertise-map <WORD>
where:
A.B.C.D is the aggregate IP address.
A.B.C.D is the aggregate IP subnetwork mask.
WORD is the route map name.
Use the aggregate-address as-set command in Router Configuration mode to
generate autonomous system path information for the aggregate IP address based
on the routes selected for aggregaton:
MOT(config-bgp)#aggregate-address {<A.B.C.D> <A.B.C.D>} as-set
where:
A.B.C.D is the aggregate IP address.
A.B.C.D is the aggregate IP mask.
Use the aggregate-address attribute-map command in Router Configuration
mode to identify the route map for manipulating the attributes of the aggregate
route:
MGBI
Configuring BGP
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