HP ProCurve 1600M, Management And Configuration Manual

Page: 623 / 690

Troubleshooting
Debug and Syslog Messaging Operation
Syslog Operation
Syslog is a client-server logging tool that allows a client switch to send event
notification messages to a networked device operating with Syslog server
software. Messages sent to a Syslog server can be stored to a file for later
debugging analysis. Use of Syslog requires that you set up a Syslog server
application on a networked host accessible to the switch. (Refer to the
documentation for the Syslog server application you select.) Except as
described below, you must use the
debug command to specify the message
types the switch sends to the configured Syslog server(s).
Syntax: [no] logging < syslog-ip-addr >
Enables or disables Syslog messaging to the specified IP
address. You can configure up to six addresses. If you config­
ure an address when none are already configured, this com­
mand enables destination logging (Syslog) and the Event
debug type. Thus, at a minimum, the switch begins sending
Event Log messages to the configured Syslog server(s). The
ACL, IP-OSPF, and/or IP-RIP message types will also be sent
to the Syslog server(s) if they are currently enabled debug types.
(Refer to
“Debug Types” on page C-36 .)
no logging removes all currently configured Syslog logging
destinations from the switch.
no logging < syslog-ip-address >
removes only the specified Syslog
logging destination from the switch.
If you use the “
no
” form of the command to delete the only
remaining logging address, debug destination logging is dis­
abled on the switch, but the Event debug type is not changed
from its current setting.
To block messages to the configured Syslog server(s) from any
currently enabled debug type, use
no debug < debug-type >
. (Refer
to “Debug Types” on page C-36 .)
To disable Syslog logging on the switch without deleting the
server addresses, use
no debug destination logging
. Note that,
unlike the case where there are no Syslog servers configured,
if one or more Syslog servers are already configured, but Syslog
messaging is disabled, adding a new server address to those
already configured does not re-enable Syslog messaging. In
this case, you must use
debug destination logging
to re-enable
Syslog messaging.
C-39