User's Manual

76-5
 Outputted information from the CLI command is classified informational
 Information from the debugging of CLI command is classified debugging
Log information can be automatically sent to corresponding channels with regard to respective severity levels.
Amongst the debugging information can only be sent to the monitor. Those with the Informational level can
only be sent to current monitor terminal, such as the information from the Telnet terminal configuration
command can only be transmitted to the Telnet terminal. Warnings information can be sent to all terminal with
also saved in the SDRAM log buffer zone. And the critical information can be save both in SDRAM and the
NVRAM (if exists) besides sent to all terminals. To check the log save in SDRAM and the NVRAM, we can use
the show logging buffered command. To clear the log save in NVRAM and SDRAM log buffer zone, we can
use the clear logging command.
76.7.2 System Log Configuration
System Log Configuration Task Sequence:
1. Display and clear log buffer zone
2. Configure the log host output channel
3. Enable/disable the log executed-commands
4. Display the log source
5. Display executed-commands state
1. Display and clear log buffer zone
Command
Description
Admin Mode
show logging buffered [ level {critical |
warnings} | range <begin-index> <end-index>]
Show detailed log information in
the log buffer channel.
clear logging {sdram | nvram}
Clear log buffer zone information.
2. Configure the log host output channel
Command
Description
Global Mode
logging {<ipv4-addr> | <ipv6-addr>} [ facility
<local-number> ] [level <severity>]
no logging {<ipv4-addr> | <ipv6-addr>} [ facility
<local-number>]
Enable the output channel of the
log host. The “no” form of this
command will disable the output at
the output channel of the log host.
logging loghost sequence-number
no logging loghost sequence-number
Add the loghost sequence-number
for the log, the no command does
not include the loghost
sequence-number.