Monitoring Logging System Events

Use the show log configuration command to display your log configuration. Use the show log data command to display system events on your screen.

You can use the output filtering feature of the show command to include or exclude lines of output based on a text string you specify. See show Commands in JunosE System Basics Configuration Guide for details.

show log configuration

Use to show the logging configuration on your system.

Example 1—Factory defaults are set

host1#show log configuration
  log destination console severity WARNING
  log destination nv-file severity CRITICAL
  no log engineering
  log fields timestamp instance no-calling-task 
  no log severity

        category            severity   verbosity   filters
-------------------------   --------   ---------   -------
NameResolverLog             ERROR      low                
aaaAtm1483Cfg               ERROR      low                
aaaEngineGeneral            ERROR      low                
aaaServerGeneral            ERROR      low                
addressServerGeneral        ERROR      low                
atm                         ERROR      low                
atm1483                     ERROR      low                
atmAal5                     ERROR      low                
bgpConnections              ERROR      low                
...
cliCommand                  NOTICE     low                
controlNetworkSlave         ERROR      low                
cops                        ERROR      low                
...
udpTraffic                  ERROR      low

Example 2—Individual log udpTraffic is set to warning

host1#(config)#log severity warning udpTraffic
host1##show log configuration
  log destination console severity WARNING
  log destination nv-file severity CRITICAL
  no log engineering
  log fields timestamp instance no-calling-task 
  no log severity

        category            severity   verbosity   filters
-------------------------   --------   ---------   -------
NameResolverLog             ERROR      low                
aaaAtm1483Cfg               ERROR      low                
aaaEngineGeneral            ERROR      low                
aaaServerGeneral            ERROR      low                
addressServerGeneral        ERROR      low                
atm                         ERROR      low                
atm1483                     ERROR      low                
atmAal5                     ERROR      low                
bgpConnections              ERROR      low                
...
cliCommand                  NOTICE     low                
controlNetworkSlave         ERROR      low                
cops                        ERROR      low                
...
udpTraffic                  WARNING*   low

* Default severity setting is overridden by the individual log severity setting.

Example 3—Log severity is set to alert

host1#(config)#log severity alert
host1#show log configuration
log destination console severity WARNING
log destination nv-file severity CRITICAL
no log engineering
log fields timestamp instance no-calling-task 
log severity ALERT

        category            severity   verbosity   filters
-------------------------   --------   ---------   -------
NameResolverLog             ALERT#     low                
aaaAtm1483Cfg               ALERT#     low                
aaaEngineGeneral            ALERT#     low                
aaaServerGeneral            ALERT#     low                
addressServerGeneral        ALERT#     low                
atm                         ALERT#     low                
atm1483                     ALERT#     low                
atmAal5                     ALERT#     low                
bgpConnections              ALERT#     low                
...
cliCommand                  ALERT#     low                
controlNetworkSlave         ALERT#     low                
cops                        ALERT#     low                
...
udpTraffic                  ALERT#     low

* Default severity setting is overridden by the system-wide severity setting.

Example 4—Individual log atm is set to severity warning

host1#(config)#log severity warning atm
host1#show log configuration
log destination console severity WARNING
log destination nv-file severity CRITICAL
no log engineering
log fields timestamp instance no-calling-task 
log severity ALERT

        category            severity   verbosity   filters
-------------------------   --------   ---------   -------
NameResolverLog             ALERT#     low                
aaaAtm1483Cfg               ALERT#     low                
aaaEngineGeneral            ALERT#     low                
aaaServerGeneral            ALERT#     low                
addressServerGeneral        ALERT#     low                
atm                         WARNING*   low                
atm1483                     ALERT#     low                
atmAal5                     ALERT#     low                
bgpConnections              ALERT#     low                
...
cliCommand                  ALERT#     low                
controlNetworkSlave         ALERT#     low                
cops                        ALERT#     low                
...
udpTraffic                  ALERT#     low

* Default severity setting is overridden by the system-wide severity setting.

* Default severity setting is overridden by the individual log severity setting.

See show log configuration.

show log data

Use to display system events.

Use keywords to select which events are displayed:

category—Limits the display to a single log event category. See the CLI online Help for available categories.
- Example
  host1#show log data category os
delta—Limits the display to events that occurred after the time set with the log baseline command.

nv-file—Displays the information that is currently logged to nonvolatile storage.

Example

host1# show log data nv-file
logFile.temp: The system cannot find the file specified.
ALERT 09/12/2000 21:29:17 os: ASSERTION FAILED: file mplsNvs2.cc, line 789
ALERT 09/20/2000 02:18:06 os: ASSERTION FAILED: file osPool.cc, line 819
ALERT 09/20/2000 02:26:35 os: ASSERTION FAILED: file osPool.cc, line 819
ALERT 09/20/2000 02:44:33 os: ASSERTION FAILED: file osPool.cc, line 819
ALERT 09/20/2000 04:56:35 os: ASSERTION FAILED: file osPool.cc, line 819
ALERT 09/27/2000 03:10:25 os: ASSERTION FAILED: file
/sw0/sc/nvs/include/../nvMapBackend.h, line 235
ALERT 10/02/2000 04:05:42 os: ASSERTION FAILED: file osHeap.cc, line 439
ALERT 10/02/2000 04:08:04 os: ASSERTION FAILED: file osMessageQueue.cc, line
42, rip1
ALERT 10/12/2000 03:43:38 os: PANIC: file osSemaphore.cc, line 54
ALERT 11/01/2000 02:03:49 os: ASSERTION FAILED: file cliCommand.cc, line 195

severity—Displays events that have a specific severity level.

Example

host1# show log data severity notice
NOTICE 01/10/2001 00:59:50 os: config -- using running
NOTICE 01/10/2001 00:59:52 os: srp application, build date: 0x3a437424 (FRI DEC 22 2000 15:32:52 UTC)
NOTICE 01/10/2001 00:59:52 os: last reset: user reboot, reason: not specified
NOTICE 01/10/2001 00:59:52 os: OsIsrRegistrar: 0xb
NOTICE 01/10/2001 00:59:52 os: OsIsrRegistrar: 0xa
NOTICE 01/10/2001 00:59:52 os: OsIsrRegistrar: 0x2

By combining keywords, you can further limit the information displayed. See the CLI online Help for information about the keywords available at each level.
host1#show log data nv-file severity alert
See show log data.