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Switch(config)#snmp-server user tester UserGroup authPriv auth md5 hellotst
Switch(config)#snmp-server group UserGroup AuthPriv read max write max notify max
Switch(config)#snmp-server view max 1 include
Scenario 4: NMS wants to receive the v3Trap messages sent by the switch.
The configuration on the switch is listed below:
Switch(config)#snmp-server enable
Switch(config)#snmp-server host 10.1.1.2 v3 authpriv tester
Switch(config)#snmp-server enable traps
Scenario 5: The IPv6 address of the NMS is 2004:1:2:3::2; the IPv6 address of the switch
(Agent) is 2004:1:2:3::1. The NMS network administrative software uses SNMP protocol to
obtain data from the switch.
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 dcstrap).
The configuration on the switch is listed below:
Switch(config)#snmp-server host 2004:1:2:3::2 v1 dcstrap
Switch(config)#snmp-server enable traps
2.4.6 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
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