3Com 5101M-MGT installation and operation guide

Note: When you use the IP Address entry of all, you cannot use trap, read_trap, or all access.

The three “old” trap options should be used when sending traps to workstations using the 3Com MIB I variables. All the non-”old" trap options should be used when sending traps to workstations using the 3Com MIB II variables.

An EMM sends alarms to those IP addresses in the community table having either trap, read-trap,or all attributes. The EMM and all modules in the concentrator can be configured via SNMP from stations having IP addresses with either read-writeor all attributes. Finally, the EMM can be monitored from stations having IP addresses with read-only,read-write,read-trap,or all attributes.

An EMM can receive SNMP alarms from SNMP devices on the network (including itself) once the EMM's IP address and accompanying attributes have been added to the community table of the SNMP device generating the alarms, and the SET ALERT feature is enabled.

For example, if a major fault condition causes a port to be disabled, an SNMP alarm is generated and displays to the terminal or workstation. This feature enables you to analyze network information simply by accessing a single EMM instead of having to be at the network management workstation.

If you plan to manage your concentrator through an SNMP workstation, you must set the following attributes for the EMM:

❑IP Address

❑Community Table

❑Alerts

❑Subnetwork Mask

❑Trap Receive

❑Default Gateway

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