Basic Administration Protocols
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Instruction Manual - NXA-ENET8-POE+
Basic Administration Protocols
This chapter describes basic administration tasks including:
Event Logging
- Sets conditions for logging event messages to system memory or flash memory, configures conditions for
sending trap messages to remote log servers, and configures trap reporting to remote hosts using Simple Mail Transfer
Protocol (SMTP).
Link Layer Discovery Protocol (LLDP)
- Configures advertisement of basic information about the local switch, or discovery
of information about neighboring devices on the local broadcast domain.
Power over Ethernet
- Sets the priority and power budget for each port.
Simple Network Management Protocol (SNMP)
- Configures switch management through SNMPv1, SNMPv2c or SNMPv3.
Remote Monitoring (RMON)
- Configures local collection of detailed statistics or events which can be subsequently
retrieved through SNMP.
Time Range
- Sets a time range during which various functions are applied, including applied ACLs or PoE
Loopback Detection (LBD)
- Detects general loopback conditions caused by hardware problems or faulty protocol settings.
Configuring Event Logging
The switch allows you to control the logging of error messages, including the type of events that are recorded in switch memory,
logging to a remote System Log (syslog) server, and displays a list of recent event messages.
System Log Configuration
Use the Administration > Log > System (Configure Global) page to enable or disable event logging, and specify which levels are
logged to RAM or flash memory.
Severe error messages that are logged to flash memory are permanently stored in the switch to assist in troubleshooting network
problems. Up to 4096 log entries can be stored in the flash memory, with the oldest entries being overwritten first when the
available log memory (256 kilobytes) has been exceeded.
The System Logs page allows you to configure and limit system messages that are logged to flash or RAM memory. The default is
for event levels 0 to 3 to be logged to flash and levels 0 to 7 to be logged to RAM.
The following table lists the options on this page:
Administration - Log (System) Options
System Log Status
Enables/disables the logging of debug or error messages to the logging process. (Default:
Enabled)
Flash Level
Limits log messages saved to the switch's permanent flash memory for all levels up to the specified
level. For example, if level 3 is specified, all messages from level 0 to level 3 will be logged to flash.
(Range: 0-7, Default: 3)
Logging Levels are as follows:
• 7: Debug - Debugging messages
• 6: Informational - Informational messages only
• 5: Notice - Normal but significant condition, such as cold start
• 4: Warning - Warning conditions (e.g., return false, unexpected return)
• 3: Error - Error conditions (e.g., invalid input, default used)
• 2: Critical - Critical conditions (e.g., memory allocation, or free memory error - resource
exhausted)
• 1: Alert - Immediate action needed
• 0: Emergency - System unusable
NOTE:
There are only Level 2, 5 and 6 error messages for the current firmware release.
RAM Level
Limits log messages saved to the switch's temporary RAM memory for all levels up to the specified
level. For example, if level 7 is specified, all messages from level 0 to level 7 will be logged to RAM.
(Range: 0-7, Default: 7)
NOTE:
The Flash Level must be equal to or less than the RAM Level.
NOTE:
All log messages are retained in RAM and Flash after a warm restart (i.e., power is reset
through the command interface).
NOTE:
All log messages are retained in Flash and purged from RAM after a cold restart (i.e.,
power is turned off and then on through the power source).
Command Log Status
Records the commands executed from the CLI, including the execution time and information about
the CLI user including the user name, user interface (console port, telnet or SSH), and user IP
address. The severity level for this record type is 6 (a number that indicates the facility used by the
syslog server to dispatch log messages to an appropriate service.)