Black Box LEH8814 ユーザーズマニュアル

- 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.

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