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Knowledge Base

Configure SNMPv3 for ESXi 6.5 (54490)

Last Updated: 8/6/2020Categories: InformationalTotal Views: 8349Language:
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Purpose

This article provides steps with example to configure SNMPv3 for ESXi 6.5.

Resolution

Example:

SNMP Server x.x.x.x
Port: 161
MAC: 00-50-56-89-30-1B (00505689301B)
user: vmawaremon
SHA1: f!zgFB1dw#WXsqRh
AES128: XebZxLOuDdoDjzxs

1 . esxcli system snmp set -E=00505689301B ( Engine ID Can also be MAC ID of target )
or
esxcli system snmp set --engineid id

2 . Command with the --authentication option to configure authentication.
esxcli system snmp set -x=SHA1
or
esxcli system snmp set --authentication SHA1

3 . Command with the --privacy option to configure privacy.
esxcli system snmp set -a=AES128
or
esxcli system snmp set --privacy AES128

4 . If you are using authentication or privacy, get the authentication and privacy hash values for the user by running the esxcli system snmp hash command with the --auth-hash and --priv-hash flags.

esxcli system snmp hash --auth-hash /tmp/secret1 --priv-hash /tmp/secret2
Example output below :-
Authhash: 9f2dcc4761a6c3f26544934a29c60cfd52ef389b
Privhash: a8fc564e9190d84998822404190b534bdc278f4f

secret1 is the path to the file containing the user's authentication password and secret2 is the path to the file containing the user's privacy password

5 . Configure the SNMP user by running the esxcli system snmp set command with the --users flag
esxcli system snmp set --users userid/authhash/privhash/security

For example, run the following command to configure vmwaresnmp for access with authentication and privacy: -
esxcli system snmp set --users vmwaresnmp/9f2dcc4761a6c3f26544934a29c60cfd52ef389b/a8fc564e9190d84998822404190b534bdc278f4f/priv

6 . Test the user configuration by running the following command: -

esxcli system snmp test --user vmwaresnmp --auth-hash /tmp/secret1 --priv-hash /tmp/secret2
Comments: Testing SNMPv3 user 'vmwaresnmp', User validated correctly for given engine id and security level: authPriv

If the configuration is correct, this command returns the following message: "User username validated correctly using engine id and security level: protocols". Here, protocols indicates the security protocols configured.

7 .  If you are configuring informs, configure the remote users by running the esxcli system snmp set command with the --remote-users option.
esxcli system snmp set --remote-users userid/auth-protocol/auth-hash/priv-protocol/priv-hash/engine-id

Ex:-  esxcli system snmp set --remote-users vmwaresnmpSHA1/9f2dcc4761a6c3f26544934a29c60cfd52ef389b/AES128/a8fc564e9190d84998822404190b534bdc278f4f/00505689301B

8 . Configure SNMP v3 Targets
esxcli system snmp set --v3targets hostname@port/userid/secLevel/message-type
Ex:- esxcli system snmp set --v3targets x.x.x.x@161/vmwaresnmp/priv/trap

9 .  To check the SNMP configuration :- esxcli system snmp get
Authentication: SHA1
Communities:
Enable: true
Engineid: 00505689301B
Hwsrc: indications
Largestorage: true
Loglevel: debug
Notraps:
Port: 161
Privacy: AES128
Remoteusers: vmwaresnmp/SHA1/9f2dcc4761a6c3f26544934a29c60cfd52ef389b/AES128/a8fc564e9190d84998822404190b534bdc278f4f/00505689301B/
Syscontact:
Syslocation:
Targets:
Users: vmwaresnmp/9f2dcc4761a6c3f26544934a29c60cfd52ef389b/a8fc564e9190d84998822404190b534bdc278f4f/priv
V3targets: x.x.x.x@161 vmwaresnmp priv trap

9 . If the ESXi SNMP agent is not enabled, run the following command:
esxcli system snmp set --enable true
Restart snmpd service :- /etc/init.d/snmpd restart

10 . Send a test notification to verify that the agent is configured correctly
esxcli system snmp test
Comments: There is 1 target configured, send warmStart requested, test completed normally.

Related Information

https://kb.vmware.com/s/article/2148987 ( SNMP issue)

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