LevelOne IES-1085 - Manual (Page 25)

User Manual Page 25
WARM START
COLD START
LINK UP
LINK DOWN
AUTHENTICATION FAILURE
RISING ALARM
FALLING ALARM
TOPOLOGY ALARM
MIB-II defines a set of manageable objects in various layers of the TCP/IP protocol suites.
MIB-II covers all manageable objects from layer 1 to layer 4, and, as a result, is the major
SNMP MIB supported by all vendors in the networking industry. The switch supports a
complete implementation of SNMP Agent and MIB-II.
RMON MIB (RFC 2819) and Bridge MIB (RFC 1493)
The switch provides hardware-based RMON counters in the switch chipset. The switch
manager CPU polls these counters periodically to collect the statistics in a format that
complies with the RMON MIB definition.
RMON Groups Supported
The switch supports the following RMON MIB groups defined in RFC 2819:
- RMON Statistics Group maintains utilization and error statistics for the
switch port being monitored.
- RMON History Group gathers and stores periodic statistical samples from
the previous Statistics Group.
- RMON Alarm Group allows a network administrator to define alarm
thresholds for any MIB variable. An alarm can be associated with Low
Threshold, High Threshold, or both. A trigger can trigger an alarm when the
value of a specific MIB variable exceeds a threshold, falls below a threshold,
or exceeds or falls below a threshold.
- RMON Event Group allows a network administrator to define actions
based on alarms. SNMP Traps are generated when RMON Alarms are
triggered. The action taken in the Network Management Station depends on
the specific network management application.