Cisco Systems OL-4580-01 manual Showing Link-State Databases

Chapter 3 Configuring Open Shortest Path First (OSPF)

Showing OSPF Information

Table 3-5 Field Descriptions for show ospf interfaces Command (continued)

Field	Description
Transit Delay	The number of seconds to transmit a Link State Update
	packet over an interface. LSAs contained in the Link State
	Update packet have their age incremented by this amount
	before transmission. This value should take into account
	transmission and propagation delays; the value must be
	greater than zero.
Retransmit	The number of seconds between LSA retransmissions for
	adjacencies belonging to an interface. Also, the interval is
	used when retransmitting Database Description and Link
	State Request packets.
Cost	The cost of sending a data packet on the interface,
	expressed in the link-state metric. The cost of sending a
	packet is advertised as the link cost for the interface in the
	router LSA. The cost of an interface must be greater than
	zero.

Showing Link-State Databases

You can show the entire OSPF link-state database (LSDB) or its specific entry types with the show ospf lsdb command. The options for the show ospf lsdb command are as follows:

•show ospf lsdb router - Displays router LSAs that describe the states of the router interfaces

•show ospf lsdb network - Displays network LSAs that describe the set of routers attached to the network

•show ospf lsdb external - Displays AS-external LSAs that describe routes to destinations external to the AS

•show ospf lsdb summary - Displays summary LSAs that describe summarized routes to the network

•show ospf lsdb asbr_summ - Displays summary LSAs that describe routes to AS boundary routers

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