Reference Guide

Border Gateway Protocol IPv4 (BGPv4) | 297
Command Modes
ROUTER BGP
Command
History
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aggregate-address
c e s
Summarize a range of prefixes to minimize the number of entries in the routing table.
Syntax
aggregate-address ip-address mask [advertise-map map-name] [as-set] [attribute-map
map-name] [summary-only] [suppress-map map-name]
Parameters
Defaults
Not configured.
Command Modes
ROUTER BGP ADDRESS FAMILY
ROUTER BGP ADDRESS FAMILY IPv6
Usage
Information
At least one of the routes included in the aggregate address must be in the BGP routing table
for the configured aggregate to become active.
Do not add the
as-set parameter to the aggregate, if routes within the aggregate are constantly
changing as the aggregate will flap to keep track of the changes in the AS_PATH.
In route maps used in the
suppress-map parameter, routes meeting the deny clause are not
suppress; in other words, they are allowed. The opposite is true: routes meeting the
permit
clause are suppressed.
Version 8.3.7.0 Introduced on the S4810.
Version 6.5.1.0 Introduced
ip-address mask
Enter the IP address and mask of the route to be the aggregate address.
Enter the IP address in dotted decimal format (A.B.C.D) and mask in /
prefix format (/x).
advertise-map
map-name
(OPTIONAL) Enter the keywords advertise-map followed by the name of
a configured route map to set filters for advertising an aggregate route.
as-set
(OPTIONAL) Enter the keyword as-set to generate path attribute
information and include it in the aggregate.
AS_SET includes AS_PATH and community information from the routes
included in the aggregated route.
attribute-map
map-name
(OPTIONAL) Enter the keywords attribute-map followed by the name of a
configured route map to modify attributes of the aggregate, excluding
AS_PATH and NEXT_HOP attributes.
summary-only (OPTIONAL) Enter the keyword summary-only to advertise only the
aggregate address. Specific routes will not be advertised.
suppress-map
map-name
(OPTIONAL) Enter the keywords suppress-map followed by the name of
a configured route map to identify which more-specific routes in the
aggregate are suppressed.