3Com Switch 8800 Configuration Guide Chapter 31 MBGP Multicast Extension Configuration31-331.2 MBGP Multicast Extension ConfigurationBasic configuration tasks of MBGP multicast extension include:z Enable MBGP multicast extension protocolz Specify the network routes notified by the MBGP multicast extensionAdvanced configuration tasks of MBGP multicast extension include:z Configure the MED value for an ASz Compare MED values from different AS neighbor pathsz Configure local preferencez Configure MBGP timerz Configure MBGP Peer (group)z Configure MBGP route aggregationz Configure an MBGP route reflectorz Configure the MBGP community attributesz Configure the interaction between MBGP and IGPz Define AS path list and routing policyz Configure MBGP route filteringz Reset BGP connectionsNote:Only configuration tasks in IPv4 multicast sub-address family view are detailed below.Other tasks configured in BGP or system view are only briefed. For the detailedconfiguration, refer to the BGP Configuration and IP Routing policy sections in RoutingProtocol of this manual.31.2.1 Enabling MBGP Multicast Extension ProtocolTo enable the MBGP multicast extension protocol, enter the IPv4 multicast sub-addressfamily view.A router does not start receiving MBFP connection requests instantly after the MBGPmulticast extension protocol is enabled. To activate a router to originate MBGPconnection requests to neighboring routers, refer to the neighbor configuration.Perform the following configuration in BGP view.
