PLANET WGSW-52040 - Manual (Page 62)

The configuration on the switch is listed below:
Switch(config)#snmp-server enable
Switch(config)#snmp-server community rw private
Switch(config)#snmp-server community ro public
Switch(config)#snmp-server securityip 2004:1:2:3::2
The NMS can use private as the community string to access the switch with read-write
permission, or use public as the community string to access the switch with read-only
permission.
Scenario 6: NMS will receive Trap messages from the switch (Note: NMS may have
community string verification for the Trap messages. In this scenario, the NMS uses a Trap
verification community string of usertrap).
The configuration on the switch is listed below:
Switch(config)#snmp-server host 2004:1:2:3::2 v1 usertrap
Switch(config)#snmp-server enable traps
4.4.6 SNMP Troubleshooting
When users configure the SNMP, the SNMP server may fail to run properly due to physical
connection failure and wrong configuration, etc. Users can troubleshoot the problems by
following the guide below:

Good condition of the physical connection.
 Interface and datalink layer protocol is Up (use the “show interface” command), and the
connection between the switch and host can be verified by ping (use “ping” command).
 The switch enabled SNMP Agent server function (use “snmp-server” command)
 Secure IP for NMS (use “snmp-server securityip” command) and community string (use
“snmp-server community” command) are correctly configured, as any of them fails,
SNMP will not be able to communicate with NMS properly.
 If Trap function is required, remember to enable Trap (use “snmp-server enable traps”
command). And remember to properly configure the target host IP address and
community string for Trap (use “snmp-server host” command) to ensure Trap message
can be sent to the specified host.
 If RMON function is required, RMON must be enabled first (use “rmon enable”
command).
 Use “show snmp” command to verify sent and received SNMP messages; Use “show
snmp status” command to verify SNMP configuration information; Use “debug snmp
packet” to enable SNMP debugging function and verify debug information.
 If users still can’t solve the SNMP problems, Please contact our technical and service
center.
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