Foundry Networks Switch and Router, Installation And Configuration Manual

Page: 273 / 1070

Configuring Basic Features
December 2000 10 - 15
• Warnings
• Notifications
• Informational
• Debugging
The device writes the messages to a local buffer that can hold up to 100 messages. You also can specify the IP
address or host name of up to six SyslogD servers. When you specify a SyslogD server, the Foundry device
writes the messages both to the system log and to the SyslogD server.
Using a SyslogD server ensures that the messages remain available even after a system reload. The Foundry
device’s local Syslog buffer is cleared during a system reload or reboot, but the Syslog messages sent to the
SyslogD server remain on the server.
The SyslogD service on a Syslog server receives logging messages from applications on the local host or from
devices such as a router or switch. SyslogD adds a time stamp to each received message and directs messages
to a log file. Most Unix workstations come with SyslogD configured. Some third party vendor products also
provide SyslogD running on NT.
SyslogD uses UDP port 514 and each SyslogD message thus is sent with destination port 514. Each SyslogD
message is one line with syslogd message format. The message is embedded in the text portion of the SyslogD
format. There are several subfields in the format. Keywords are used to identify each subfield, and commas are
delimiters. The subfield order is insensitive except that the text subfield should be the last field in the message.
All the subfields are optional.
Displaying Syslog Messages
To display the Syslog messages in the buffer, enter the following command at any level of the CLI:
BigIron> show logging
Syslog logging: enabled (0 messages dropped, 0 flushes, 0 overruns)
Buffer logging: level ACDMEINW, 3 messages logged
level code: A=alert C=critical D=debugging M=emergency E=error
I=informational N=notification W=warning
Static Log Buffer:
Dec 15 19:04:14:A:Fan 1, fan on right connector, failed
Dynamic Log Buffer (50 entries):
Dec 15 18:46:17:I:Interface ethernet4, state up
Dec 15 18:45:21:I:Bridge topology change, vlan 4095, interface 4, changed
state to forwarding
Dec 15 18:45:15:I:Warm start
For a list of the Syslog messages, see the “show logging” section of the “Show Commands” chapter in the
Foundry Switch and Router Command Line Interface Reference .
For information about the Syslog configuration information, time stamps, and dynamic and static buffers, see
“Displaying the Syslog Configuration” on page 10-17.
Disabling or Re-Enabling Syslog
Syslog is enabled by default. To disable or re-enable it, use one of the following methods.
USING THE CLI
To disable it, enter the following command at the global CONFIG level:
BigIron(config)# logging off
Syntax: logging on | off
To re-enable logging, enter the following command:
BigIron(config)# logging on