Command Reference Guide

3Com Router 3000 Ethernet Family
Command Reference Guide
Chapter 5 BGP Configuration Commands
3Com Corporation
5-2
Description
Use the aggregate command to establish an aggregated record in the BGP routing
table.
Use the undo aggregate command to cancel the function.
By default, there is no route aggregation.
The keywords are explained as follows:
Table 5-1 Functions of the keywords
Keywords Function
as-set
Used to create an aggregated route,
whose AS path information includes
individual routes. Use this keyword
carefully when many AS paths need to
be aggregated, for the frequent change
of individual routes may lead to route
vibration.
detail-suppressed
This keyword does not suppress any
aggregated route, but it suppresses the
advertisement of all the individual
routes. If only some individual routes are
to be suppressed, use the peer
filter-policy command.
suppress-policy
Used to create an aggregated route and
suppress the advertisement of the
specified route. If you want to suppress
some specific routes selectively and
leave other routes still being advertised,
use the if-match clause of the
route-policy command.
origin-policy
Selects only the individual 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.
Example
# Establish an aggregated record in the BGP routing table.
[3Com -bgp] aggregate 192.213.0.0 255.255.0.0
5.1.2 balance
Syntax
balance num