Nagios Support Forum

I am on Nagios 5.25

Here is my Cisco config:
logging source-interface loopback0
logging trap notifications
ip access-list standard NMS_ACL
permit 172.30.30.161
snmp-server group NMS-GROUP v3 priv notify nms access NMS_ACL
snmp-server user nms NMS-GROUP v3 auth sha <REDACTED> priv aes 256 <REDACTED>
snmp-server view nms iso included
snmp-server ifindex persist
snmp-server enable traps entity-sensor threshold
snmp-server enable traps envmon
snmp-server enable traps config
snmp-server enable traps syslog
snmp-server host 172.30.30.161 version 3 priv nms
snmp-server host 172.30.30.161 informs version 3 noauth remoteuser config
logging host 172.30.30.160

Here are the Cisco debugs:
process_mgmt_req_int: UDP packet being de-queued

Mar 16 19:49:31.358 UTC: SNMP: Packet received via UDP from 172.30.30.161 on GigabitEthernet0/0SrParseV3SnmpMessage: No matching Engine ID.
SrParseV3SnmpMessage: Failed.
SrDoSnmp: authentication failure, Unknown Engine ID

Mar 16 19:49:31.358 UTC: SNMP: Report, reqid 28093, errstat 0, erridx 0
internet.6.3.15.1.1.4.0 = 4
Mar 16 19:49:31.358 UTC: SNMP: Packet sent via UDP to 172.30.30.161
process_mgmt_req_int: UDP packet being de-queued

Mar 16 19:49:31.426 UTC: SNMP: Packet received via UDP from 172.30.30.161 on GigabitEthernet0/0SrParseV3SnmpMessage: not in lifetime failure
SrParseV3SnmpMessage: Failed.
SrDoSnmp: Packet not in Time Window

Mar 16 19:49:31.426 UTC: SNMP: Report, reqid 2147483647, errstat 0, erridx 0
internet.6.3.15.1.1.2.0 = 4
Mar 16 19:49:31.426 UTC: SNMP: Packet sent via UDP to 172.30.30.161
process_mgmt_req_int: UDP packet being de-queued

Mar 16 19:49:31.478 UTC: SNMP: Packet received via UDP from 172.30.30.161 on GigabitEthernet0/0no such type in ParseType (251) (0xFB)
ParseSequence, Unexpected type: FFFFFFFF
SrParseV3SnmpMessage: ParseSequence:
SrParseV3SnmpMessage: Failed.
SrDoSnmp: ASN Parse Error

process_mgmt_req_int: UDP packet being de-queued

Mar 16 19:49:36.486 UTC: SNMP: Packet received via UDP from 172.30.30.161 on GigabitEthernet0/0no such type in ParseType (231) (0xE7)
ParseSequence, Unexpected type: FFFFFFFF
SrParseV3SnmpMessage: ParseSequence:
SrParseV3SnmpMessage: Failed.
SrDoSnmp: ASN Parse Error

There is a valid engine ID.....
PARIS-01#show snmp engineID
Local SNMP engineID: 80000009030088F031E79A00
Remote Engine ID IP-addr Port

Are you able to run a SNMP walk against the router from the XI CLI? Can you post the full input/output?

I see you have created a ticket for this, we like to address the issue at one place only. With that said, I'm going to close this out so we can resume there.