User Guide

Chapter : BGP4 Configure Commands 51
Router User Guide
configure router bgp aggregate_address
This command is used to aggregate routes.
parameter definition
syntax:
[ no ] aggregate_address network < IP address > mask < subnet mask > [ generate_as_set
< as_set > ] [ generate_summary_only < summary_only > ] [ suppress_map < name > ]
[advertise_map < name > ] [ attribute_map < name > ]
example:
Alcatel-host/configure/router/bgp 10> aggregate_address 100.3.0.0 255.255.0.0
network Network IP address in dotted notation
mask Network subnet mask address in dotted notation
generate_as_set
as_set
Generates AS path information
Form a verbose aggregate, whose AS path contains a leading AS sequence
representing the common leading sequence of all contributing routes, and whose AS
path contains a trailing AS set representing all ASes in all contributing paths that could
not be included in the AS sequence. By default, this feature is off, and the AS path is
truncated when the aggregate is formed.
generate_summary_only
summary_only
Filters more specific routes from updates
Suppresses transmission of any contributing routes if an aggregate exists. Note that the
contributing route will not be sent even if an outgoing route_map blocks the sending
of the aggregate itself. This cannot be combined with the suppress_map parameter.
suppress_map Name of the route map to suppress
Uses the named route_map to suppress the transmission of selected contributing
routes. Contributing routes that do not match the route_map will not be suppressed.
This cannot be combined with the summary_only parameter.
advertise_map Name of route map to control attribute advertisement
Selects the routes that contribute to the aggregate. The aggregate will only be formed
if matching routes exist. Only the matching routes will be suppressed if summary_only
or suppress_map are configured.
attribute_map Name of route map for setting attributes
Specifies attributes to be set on the aggregate when it is transmitted.