Operation Manual – Routing ProtocolH3C S9500 Series Routing Switches Chapter 4 OSPF Configuration4-14Note:z The filter-policy import command only filters the OSPF routes of this processreceived from the neighbors, and routes that cannot pass the filter will not be addedto the routing table. This command only takes effect on ABR.z The filter-policy export command only takes effect on the routes imported by theimport-route command. If you configure the switch with only the filter-policyexport command, but without configuring the import-route command to importother external routes (including OSPF routes of different process), then thefilter-policy export command does not take effect.z If the filter-policy export command does not specify which type of route is to befiltered, it takes effect on all routes imported by the local device using theimport-route command.III. Configuring filtering of received Type-3 LSAsUse the following command to configure route filtering between OSPF areas.Table 4-12 Configure filtering of received Type-3 LSAsOperation CommandEnable an OSPF area to filterreceived Type-3 LSAsfilter-policy { acl-number | ip-prefixip-prefix-name } importDisable an OSPF area from filteringreceived Type-3 LSAsundo filter-policy { acl-number | ip-prefixip-prefix-name } importBy default, the OSPF area does not filter received Type-3 LSAs.IV. Configuring filtering of Type-3 LSAs advertised to other areasTable 4-13 Configure filtering of Type-3 LSAs advertised to other areasOperation CommandEnable an OSPF area to filterType-3 LSAs advertised to otherareasfilter-policy { acl-number | ip-prefixip-prefix-name } exportDisable an OSPF area fromfiltering Type-3 LSAs advertisedto other areasundo filter-policy { acl-number | ip-prefixip-prefix-name } exportBy default, an OSPF area does not filter Type-3 LSAs advertised to other areas.
