Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - IP-IPV6-IGP CONFIGURATION GUIDE 2010-10-31 Configuration Manual page 337

show ip ospf spf-log
Copyright © 2010, Juniper Networks, Inc.
Use to display how often and why the router has run a full SPF calculation.
Field descriptions
Intra SPF log—Log for SPF calculations run to compute intra-area LSAs
Inter SPF log—Log for SPF calculations run to compute interarea LSAs
External SPF log—Log for SPF calculations run to compute routes outside the OSPF
routing domain
When—Amount of time since a full SPF calculation took place, in
hours:minutes:seconds; the previous 20 calculations are logged
Duration—Number of milliseconds to complete this SPF run; the elapsed time is in
actual clock time, not CPU time
LSA Router Id—Whenever a full SPF calculation is triggered by a new LSA, the router
ID is stored in the router
Triggers—List of reasons that triggered a full SPF calculation
Example
host1#show ip ospf spf-log
Intra SPF log
When Duration
00:04:42 0.000
00:04:38 0.000
00:04:34 0.000
00:04:30 0.010
00:03:51 0.000
00:03:47 0.000
00:03:43 0.000
00:03:39 0.000
Inter SPF log
When Duration
00:04:46 0.010
00:04:42 0.000
00:04:38 0.000
00:04:34 0.000
00:03:55 0.000
00:03:51 0.000
00:03:47 0.000
00:03:43 0.000
External SPF log
When Duration
00:04:47 0.000
00:04:43 0.000
00:04:39 0.000
00:04:35 0.010
00:03:56 0.000
00:03:52 0.000
LSA Router Id Triggers
23.23.23.3 Protocol Off
23.23.23.3 LSA Add
12.12.12.2 LSA Add
23.23.23.3 LSA Update
23.23.23.3 Protocol Off
23.23.23.3 LSA Add
12.12.12.2 LSA Add
23.23.23.3 LSA Update
LSA Router Id Triggers
23.23.23.3 Protocol Off
23.23.23.3 LSA Add
12.12.12.2 LSA Add
23.23.23.3 LSA Update
23.23.23.3 Protocol Off
23.23.23.3 LSA Add
12.12.12.2 LSA Add
23.23.23.3 LSA Update
LSA Router Id Triggers
23.23.23.3 Protocol Off
23.23.23.3 LSA Add
12.12.12.2 LSA Add
23.23.23.3 LSA Update
23.23.23.3 Protocol Off
23.23.23.3 LSA Add
Chapter 5: Configuring OSPF
313