334To do… Use the command… RemarksEnable route redistribution from anotherrouting protocolimport-route protocol [ process-id [ medmed-value | route-policy route-policy-name ]* ]RequiredNot enabled bydefault.NOTE:If the default-route imported command is not configured, using the import-route command cannotredistribute any IGP default route.Configuring IPv6 BGP route summarizationTo reduce the routing table size on medium and large BGP networks, configure route summarization onBGP routers. BGP supports only manual summarization of IPv6 routes.Follow these steps to configure IPv6 BGP route summarization:To do… Use the command… RemarksEnter system view system-view —Enter BGP view bgp as-number —Enter IPv6 address familyview ipv6-family —Configure manual routesummarizationaggregate ipv6-address prefix-length [ as-set |attribute-policy route-policy-name |detail-suppressed | origin-policy route-policy-name| suppress-policy route-policy-name ] *RequiredNot configured bydefault.Advertising a default route to an IPv6 peer or peer groupFollow these steps to advertise a default route to an IPv6 peer or peer group:To do… Use the command… RemarksEnter system view system-view —Enter BGP view bgp as-number —Enter IPv6 address family view ipv6-family —Advertise a default route to anIPv6 peer or peer grouppeer { ipv6-group-name | ipv6-address }default-route-advertise [ route-policyroute-policy-name ]RequiredNot advertised bydefault.NOTE:With the peer default-route-advertise command executed, the local router advertises a default route withitself as the next hop to the specified IPv6 peer or peer group, regardless of whether the default route isavailable in the routing table.Configuring outbound route filteringFollow these steps to configure outbound route filtering: