3com 8807 참조 가이드

C

HAPTER

 27: BGP C

ONFIGURATION

 C

OMMANDS

Use the aggregate command to establish an aggregated record in the BGP 
routing table.

Use the undo aggregate command to disable the function.

By default, there is no route aggregation.

The keywords are explained as follows:

# Create an aggregated record in BGP routing table.

[3Com-bgp] aggregate 168.328.0.0 255.255.0.0 

balance balance-number

BGP view

balance-number: Specifies the number of BGP equivalent routes.

Use the balance command to set the number of BGP equivalent routes currently 
supported by the system.

Use the undo balance command to restore the default number of BGP equivalent 
routes.

By default, the system supports one BGP equivalent route.

Table 69   The use of the keywords

as-set 

Used to produce an aggregated route, whose AS path information 
includes detailed routes. Use this keyword carefully when many AS paths 
need to be aggregated, for the frequent change of routes may lead to 
route vibration. 

detail-suppresse
d 

This keyword does not suppress any aggregated route, but it restrains the 
advertisement of all the specific routes. If only some specific routes are to 
be restrained, use the peer filter-policy command carefully. 

suppress-policy  Create an aggregated route with this keyword. At the same time, the 

advertisement of the specified route is restrained. If you want to restrain 
some specific routes selectively and leaves other routes still being 
advertised, use the if-match sub-statement of the route-policy 
command. 

origin-policy 

Selects only the specific routes that are in accordance with route-policy to 
create an aggregated route. 

attribute-policy  Sets aggregated route attributes. The same work can be done by using the 

peer route-policy command, etc.