attribute-mapmap-name(OPTIONAL) Enter the keywords attribute-map followed by thename 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 onlythe aggregate address. Specific routes will not be advertised.suppress-mapmap-name(OPTIONAL) Enter the keywords suppress-map followed by thename of a configured route map to identify which more-specificroutes in the aggregate are suppressed.Defaults Not configured.Command Modes CONFIGURATION-ROUTER-BGPV6-ADDRESS FAMILYCommand History Version 8.2.1.0 Introduced on the E-Series ExaScale.Version 7.4.1.0 IntroducedUsageInformationAt least one of the routes included in the aggregate address must be in the BGP routing tablefor the configured aggregate to become active.Do not add the as-set parameter to the aggregate if routes within the aggregate areconstantly 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 arenot suppress; in other words, they are allowed. The opposite is true: routes meeting thepermit clause are suppressed.If the route is injected via the network command, that route still appears in the routing table ifthe summary-only parameter is configured in the aggregate-address command.The summary-only parameter suppresses all advertisements. If you want to suppressadvertisements to only specific neighbors, use the neighbor distribute-listcommand.In the show ip bgp command, aggregates contain an ‘a’ in the first column and routessuppressed by the aggregate contain an ‘s’ in the first column.bgp always-compare-medAllows you to enable comparison of the MULTI_EXIT_DISC (MED) attributes in the paths from different external ASs.C-Series, E-SeriesSyntax bgp always-compare-medTo disable comparison of MED, use the no bgp always-compare-med command.Defaults Disabled (that is, the software only compares MEDs from neighbors within the same AS).Command Modes ROUTER BGPCommand History Version 8.2.1.0 Introduced on the E-Series ExaScale.Version 7.4.1.0 Introduced455
