show ip ospf statistics

This command displays information about recent Shortest Path First (SPF) calculations for the specified virtual router. If no router is specified, it displays information for the default router. The SPF is the OSPF routing table calculation. The output lists the number of times the SPF has run for each OSPF area. A table follows this information. For each of the 15 most recent SPF runs, the command shows statistics for how long ago the SPF ran, how long the SPF took, the reasons why the SPF was scheduled, the individual components of the routing table calculation time and to show the RIB update time. The most recent statistics are displayed at the end of the table.

Format	`show ip ospf statistics [vrf vrf-name]`
Mode	Privileged EXEC

Term	Definition
Delta T	The time since the routing table was computed. The time is in the format hours, minutes, and seconds hh:mm:ss).
Intra	The time taken to compute intra-area routes, in milliseconds.
Summ	The time taken to compute inter-area routes, in milliseconds.
Ext	The time taken to compute external routes, in milliseconds.
SPF Total	The total time to compute routes, in milliseconds. The total may exceed the sum of the Intra, Summ, and Ext times.
RIB Update	The time from the completion of the routing table calculation until all changes have been made in the common routing table [the Routing Information Base (RIB)], in milliseconds.
Reason	The event or events that triggered the SPF. Reason codes are as follows: R – new router LSA N – new network LSA SN – new network summary LSA SA – new ASBR summary LSA X – new external LSA

Example: The following shows example CLI display output for the command.

(Router) #show ip ospf statistics

 Area 0.0.0.0: SPF algorithm executed 15 times

Delta T         Intra       Summ        Ext         SPF Total       RIB Update   Reason

00:05:33            0          0          0                 0                0   R
00:05:30            0          0          0                 0                0   R
00:05:19            0          0          0                 0                0   N, SN
00:05:15            0         10          0                10                0   R, N, SN
00:05:11            0          0          0                 0                0   R
00:04:50            0         60          0                60              460   R, N
00:04:46            0         90          0               100               60   R, N
00:03:42            0         70         10                90              160   R
00:03:39            0         70         40               120              240   X
00:03:36            0         60         60               130              160   X
00:01:28            0         60         50               130              240   X
00:01:25            0         30         50               110              310   SN
00:01:22            0          0         40                50              260   SN
00:01:19            0          0         20                20              190   X
00:01:16            0          0          0                 0              110   R, X