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Hi All,

I am testing SNMPv3 before I roll out across a production network.

I am using Cisco DNA to push the configuration out to the seed device.

The software we use to monitor the devices are PRTG and is working fine with the seed device.

Everything appears to be working as I like. My question is does anybody know why the Unknown community name increases.

I have attached configuration for reference.


#sh snmp
7059 SNMP packets input
0 Bad SNMP version errors
712 Unknown community name
0 Illegal operation for community name supplied
0 Encoding errors
24493 Number of requested variables
0 Number of altered variables
1204 Get-request PDUs
3935 Get-next PDUs
0 Set-request PDUs
0 Input queue packet drops (Maximum queue size 1000)
7622 SNMP packets output
0 Too big errors (Maximum packet size 1500)
0 No such name errors
0 Bad values errors
0 General errors
0 Response PDUs
1275 Trap PDUs
Packets currently in SNMP process input queue: 0
SNMP global trap: enabled

SNMP logging: enabled
Logging to, 0/10, 443 sent, 0 dropped.


#sh run | s snmp
snmp-server group default v3 priv
snmp-server tftp-server-list SNMPMANAGEMENT

snmp-server host version 3 priv test1

Traps removed for brevity


#sh snmp user

User name: test1
Engine ID: 8000000903000CD0F8DC2100
storage-type: nonvolatile active
Authentication Protocol: SHA
Privacy Protocol: AES128
Group-name: default


#sh snmp group
groupname: default security model:v3 priv
contextname: <no context specified> storage-type: nonvolatile
readview : v1default writeview: <no writeview specified>
row status: active


#sh ip access SNMPMANAGEMENT
Standard IP access list SNMPMANAGEMENT
10 permit
20 permit
30 permit
40 permit, wildcard bits
50 deny any log

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