5-18information. For example, if automatic route summarization is configured, the routes 160.10.1.0/24,160.10.2.0/24, and 160.10.3.0/24 in the routing table are summarized with 160.10.0.0/16 which isadvertised instead.z Manual summarization mode, where local BGP routes are summarized. In this mode, BGPsummarizes multiple routes with one route.Note the following:z Default routes cannot be summarized in the automatic mode.z The routes injected with the network command cannot be summarized in the automatic mode.z Manual summary routes enjoy higher priority than automatic ones.Follow these steps to configure BGP route summarization:To do... Use the command... RemarksEnter system view system-view —Enter BGP view bgp as-number —Enable automatic routesummarization summaryConfigureBGP routesummarization Configure a summaryrouteaggregate ip-address mask [ as-set |attribute-policy route-policy-name |detail-suppressed | origin-policyroute-policy-name | suppress-policyroute-policy-name ] *RequiredBy default,routes are notsummarized.Enabling Default Route AdvertisingFollow these steps to enable default rout advertising:To do... Use the command... RemarksEnter system view system-view —Enter BGP view bgp as-number —Enable default routeadvertisingpeer group-namedefault-route-advertiseRequiredBy default, a BGP router doesnot send default routes to aspecified peer/peer group.With the peer default-route-advertise command executed, no matter whether the default route is inthe local routing table or not, a BGP router sends a default route, whose next hop address is the localaddress, to the specified peer or peer group.Configuring BGP Route Distribution Filtering PoliciesFollow these steps to configure BGP route distribution filtering policies:
