Reference Guide

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 keywords summary-only to advertise
only the aggregate address. Specific routes are not
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.
Defaults Not configured.
Command
Modes
CONFIGURATION-ROUTER-BGPV6-ADDRESS FAMILY
Command
History
Version 9.0(1.3) Introduced on the S5000.
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.
If the route is injected using the network command, that route still appears in the
routing table if you configure the
summary-only parameter in the aggregate-
address command.
The summary-only parameter suppresses all advertisements. If you want to
suppress advertisements to only specific neighbors, use the
neighbor
distribute-list command.
In the show ip bgp ipv6 unicast command, aggregates contain an ‘a’ in the
first column and routes suppressed by the aggregate contain an ‘s’ in the first
column.
bgp always-compare-med
Allows you to enable comparison of the MULTI_EXIT_DISC (MED) attributes in the paths from different
external ASs.
S5000
Syntax
bgp always-compare-med
700
IPv6 Border Gateway Protocol (IPv6 BGP)