RP/0/RP0/CPU0:R1#show ospf trace all | include 192.0.2
Tue Sep 22 16:36:24.202 UTC
105  Sep 22 16:33:43.788  ospf_sham_link_check: ext_rt: 192.0.2.0/24 met: 0 ribhdl: 3
107  Sep 22 16:33:44.726  ospf_sham_link_check: ext_rt: 192.0.2.0/24 met: 0 ribhdl: 3
RP/0/RP0/CPU0:R1#show ospf trace errors
Tue Sep 22 16:36:43.498 UTC

Traces for OSPF 1 (Tue Sep 22 16:36:44)
Traces returned/requested/available:  5/8192/5
Trace buffer: errors

1    Sep 22 16:17:42.002  ospf_nsr_ev_free: Cannot free event 0x88155fc0: flags 0x0,work 0x5625c15788d0, handler 0x5625ae5e902e
2    Sep 22 16:17:42.002  ospf_nsr_ev_free:   inst 0x0, nsr_info 0x0, next 0x0
3    Sep 22 16:17:42.102  ospf_is_config_startup_done: Reading config startup done tuple failed [errno 0x40818600: 'sysdb' detected the 'warning' condition 'A SysDB client tried to access a nonexistent item or list an empty directory']
4    Sep 22 16:18:47.589  ospf_rcv_update_preprocess: Nbr 2.2.2.2 on Gi0/0/0/0 not up
5    Sep 22 16:18:47.604  ospf_rcv_update_preprocess: Nbr 2.2.2.2 on Gi0/0/0/0 not up