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Black Box Hardened Managed Ethernet Switch
User’s Manual 27
- RMON History Group – gathers and stores tical samples from
the previous Statistics Group.
- RMON Alarm Group – allow
thresholds for any MIB variable.
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.
Bridge Groups Supported
The switch supports the following four groups of Bridge MIB (RFC 1493):
- The dot1dBase Group – a mandatory group that contains the objects
applicable to all types of bridges.
- The dot1dStp Group – contains objects that denote the bridge’s state with
respect to the Spanning Tree Protocol. If a node does not implement the
Spanning Tree Protocol, this group will not be implemented. This group is
applicable to any transparent only, source route, or SRT bridge that
implements the Spanning Tree Protocol.
- The dot1dTp Group – contains objects that describe the entity’s transparent
bridging status. This group is applicable to transparent operation only and
SRT bridges.
- The dot1dStatic Group – contains objects that describe the entity’s
destination-address filtering status. This group is applicable to any type of
bridge which performs destination-address filtering.
periodic statis
s a network administrator to define alarm
An alarm can be associated with Low