BigIron RX Series Configuration Guide 86153-1001810-01Displaying MBGP information 27Aggregating routes advertised to BGP4 neighborsBy default, the device advertises individual MBGP routes for all the multicast networks. Theaggregation feature allows you to configure the device to aggregate routes in a range of networksinto a single CIDR number. For example, without aggregation, the device will individually advertiseroutes for networks 207.95.10.0/24, 207.95.20.0/24, and 207.95.30.0/24. You can configure thedevice to instead send a single, aggregate route for the networks. The aggregate route would beadvertised as 207.95.0.0/16.To aggregate MBGP routes for 207.95.10.0/24, 207.95.20.0/24, and 207.95.30.0/24, enter thefollowing command.BigIron RX(config-bgp-router)# aggregate-address 207.95.0.0 255.255.0.0Syntax: aggregate-address [as-set] [summary-only] [suppress-map] [advertise-map ] [attribute-map ]The and parameters specify the aggregate value for the networks.The as-set parameter causes the router to aggregate AS-path information for all the routes in theaggregate address into a single AS-path.The summary-only parameter prevents the router from advertising more specific routes containedwithin the aggregate route.The suppress-map parameter prevents the more specific routes contained in thespecified route map from being advertised.The advertise-map parameter configures the device to advertise the more specificroutes in the specified route map.The attribute-map parameter configures the device to set attributes for theaggregate routes based on the specified route map.NOTEFor the suppress-map, advertise-map, and attribute-map parameters, the route map must alreadybe defined.Displaying MBGP informationAll of the BGP show commands have MBGP equivalents. Use mbgp instead of bgp in the commandsyntax. For example, to display the MBGP route table, enter the show ip mbgp routes commandinstead of the show ip bgp routes command. Table 128 lists the MBGP show commands anddescribes their output. For information about a command, refer to Chapter 26, “Configuring BGP4(IPv4 and IPv6)”.TABLE 128 MBGP Show commandsCommand Descriptionshow ip mbgp summary Displays summary configuration information and statistics.show ip mbgp config Shows the configuration commands in the running-config.show ip mbgp neighbors Displays information about MBGP neighbors.show ip mbgp peer-group Displays information about MBGP peer groups.show ip mbgp routes Displays MBGP routes.
