3Com Switch 8800 Configuration Guide Chapter 31 MBGP Multicast Extension Configuration31-9Operation CommandRemove outgoing policycnfigurationundo peer group-name ip-prefix prefixnameexportBy default, a peer (group) does not perform route filtering based on the prefix list.31.2.8 Configuring MBGP Route AggregationMBGP supports the manual aggregation of routes. Manual aggregation aggregates thelocal MBGP routes. A series of parameters can be configured during manual routeaggregation.Please perform the following configurations in IPV4 multicast sub-address family view.Table 31-12 Configuring MBGP route aggregationOperation CommandConfigure theaggregation of localroutesaggregate address mask [ as-set | attribute-policyroute-policy-name | detail-suppressed | origin-policyroute-policy-name | suppress-policyroute-policy-name ]*Remove theaggregation of localroutesundo aggregate address mask [ as-set |attribute-policy route-policy-name | detail-suppressed |origin-policy route-policy-name | suppress-policyroute-policy-name ]*By default, MBGP does not aggregate local routes.31.2.9 Configuring an MBGP Route ReflectorTo ensure the interconnectivity among MBGP peers, it is necessary to establishfully-closed network among IBGP multicast peers. However, some internal MBGPmulticast networks are very large, and it costs a good sum to establish a fully-closednetwork. Route reflector solves this problem. The core is to specify a router as thefocus of the internal sessions. Multiple MBGP multicast routers can be peers of onecentral point, namely a multiple route reflector, which in turn creates peer relationshipwith other reflectors. The route reflector is the focus of other routers. The routers otherthan those reflectors are called clients. The clients are in peer with route reflects andexchange routing information with them. The route reflectors transfer (reflect)information between the clients in turn.For the details of the principles and configurations, refer to “BGP Configuration” of theRouting Protocol part.
