SNR S2940-8G-v2 Switch Configuration Guide
Basic Switch Configuration
Switch(config)#snmp-server
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 permis-
sion, 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 commu-
nity 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
2.4.6 SNMP Troubleshooting
When users configure the SNMP, the SNMP server may fail to run properly due to physical con-
nection 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.
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