3Com 5500G-EI Command Reference Guide - Page 201

OSPF Configuration Commands 201 Table 38 Output Description of the display ospf vlink Command Cost Type Transit Area Timers Route cost of the interface Type: virtual link ID of transit area tha the virtual link passes, and it cannot be backbone area, Stub area, or NSSA area OSPF timers: ■ Hello - Interval of hello packets ■ Dead - Interval of dead neighbors ■ Poll - Interval of poll ■ Retransmit - Interval of retransmitting LSA ■ Transmit delay - Delay time of transmitting LSA filter-policy export Syntax filter-policy { acl_number | gateway gateway-ip | ip-prefix ip_prefix_name } export [ routing_protocol ] undo filter-policy {acl_number | gateway gateway-ip | ip-prefix ip_prefix-name } export [ routing_protocol ] View OSPF View Parameter acl_number Enter an access control list number. ip_prefix_name: Enter the name of the address prefix list. routing_protocol Enter the protocol advertising the routing information. This can be one of the following: direct, rip and static. Description Using the filter-policy export command, you can configure how OSPF filters the advertised routing information. Only the routing information that meets these conditions is advertised. Using the undo filter-policy export command, you can cancel the filtering rules. By default, no filtering of the distributed routing information is performed. Related commands: acl, ip ip-prefix. Example To configure OSPF to only advertise the routing information permitted by acl 2000, enter the following commands: system-view System View: return to User View with Ctrl+Z. [SW5500]acl number 2000 [SW5500-acl-basic-2000]rule permit source 11.0.0.0 [SW5500-acl-basic-2000]rule deny source any [SW5500-acl-basic-2000]quit [SW5500]router id 1.1.1.1 [SW5500]ospf 0.255.255.255