3Com Switch 8800 Configuration Guide Chapter 21 BGP Configuration21-14IV. Configuring route filtering policy based on address prefix list for a peer(group)Table 21-21 Configure route filtering policy based on address prefix list for a peer(group)Operation CommandConfigure the ingress route filtering policybased on address prefix list for a peer (group)peer { peer-address |group-name } ip-prefix prefixnameimportRemove the ingress route filtering policybased on address prefix list of a peer (group)undo peer { peer-address |group-name } ip-prefix prefixnameimportConfigure the egress route filtering policybased on address prefix list for a peer grouppeer group-name ip-prefixprefixname exportRemove the egress route filtering policybased on address prefix list for a peer groupundo peer group-name ip-prefixprefixname exportBy default, route filtering based on address prefix list for a peer (group) is disabled.21.2.5 Configuring Network Routes for BGP DistributionPerform the following configuration in BGP view.Table 21-22 Configure network routes for BGP distributionOperation CommandConfigure the local network routefor BGP distributionnetwork ip-address address-mask[ route-policy route-policy-name ]Remove the local network routefor BGP distributionundo network ip-address address-mask[ route-policy route-policy-name ]By default, no network route is configured for BGP distribution.21.2.6 Configuring the Interaction Between BGP and IGPI. Importing IGP routesBGP can transmit the internal network information of local AS to other AS. To reachsuch objective, the network information about the internal system learned by the localrouter via IGP routing protocol can be transmitted.Perform the following configuration in BGP view.