The SNMP Tool Screen

Token Errors

4

A Token Error may indicate that an active monitor either has detected a recirculating frame or token, or has found that its Timer Valid Transmission (TVX) time has expired before any token has been detected circulating on the ring (i.e.: a lost frame error has occurred). The active monitor is responsible for purging the ring and issuing new tokens in response to these errors.

Frequency Errors

5

A Frequency Error may indicate that the frequency of the incoming signal deviates excessively from that of the reporting station’s onboard crystal oscillator. When frequency errors are detected, the ring enters the monitor contention process to establish a new active monitor.

5.9 The SNMP Tool Screen

Access the SNMP Tool screen (Figure 5-14) from the Main Menu.

STHI LOCAL MANAGEMENT

 

Flash Image Version: 1.00.00

 

 

 

 

SNMP TOOLS

 

 

 

COMMUNITY NAME: public

 

 

 

 

OID PREPEND: 1.3.6.1

 

GET

SET

GETNEXT

WALK

RECALL OID

STEP CYCLES REPEAT

F6

F7

F8

 

F9

 

RETURN

F10

Figure 5-14. SNMP Tool Screen

Through the SNMP Tool screen, the user can access information stored in the STHI hub’s Management Information Base (MIB). MIBs and their objects are logically arranged as trees with subsequent branches and leaves; each leaf is a MIB object. One leaf, for example, contains the hub’s

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Cabletron Systems STHI manual Snmp Tool Screen, Token Errors, Frequency Errors