3Com 10014299 manual Displaying, Debugging Ospf, Filter for Ospf, Display and Debug Ospf

438CHAPTER 29: CONFIGURING OSPF

By default, the cost value is 1, and the tag value is 1. The imported route is external route Type 2, the interval of importing external route is 1 second and at most 150 external routes can be imported in each interval.

Setting Route Preference Multiple dynamic routing protocols may be executed on the router at the same time, the problem of information sharing and selection between the routing protocols can occur. The system sets a priority for every routing protocol. When several protocols find the same route, the protocol with higher priority will supercede.

Perform the following configurations in OSPF view.

Table 505 Set Route Preference

Operation	Command
Specify OSPF route preference	preference [ ase ] value
Return the default value of OSPF route	undo preference [ ase ]
preference

By default, OSPF route preference is 10. The preference of the imported external routing protocol is 150.

Configuring a Route Perform the following configurations in OSPF view.

Filter for OSPF

Configure filtering route information received by OSPF.

Table 506 Filter the Routing Information Received by OSPF

Operation	Command
Filter the routing information received	filter-policy acl-numberimport
Change or cancel filtering routing	undo filter-policy acl-numberimport
information received

By default, OSPF does not filter any route information received.

Displaying and	Table 507 Display and Debug OSPF
Debugging OSPF
	Operation	Command
	Display OSPF main information	display ospf
	Display OSPF external routing information	display ospf ase [ retranse ]
	Display OSPF statistic information	display ospf cumulative
	Display OSPF LSDB information	display ospf database [ retranse ]
	Display OSPF error information	display ospf error
	Display OSPF interface information	display ospf interface
		interface-type interface-number
	Display OSPF LSDB detailed information	display ospf lsa [ router_lsa
		net_lsa sumnet_lsa asbr_lsa
		external_lsa nssa_external_lsa
		adv_rtr self_originate ls_id ] [
		area area-id ]
	Display OSPF neighboring point	display ospf peer
	information
	Display OSPF nexthop information	display ospf nexthop