I wanted to post out my notes on getting SNMP and sFlow enabled on my Unifi USW Enterprise switch. First of all, you make sure that SNMPv3 is enabled.
However, I had issues just enabling this and assuming it worked on my switch. I could never get my SNMPv3 monitor to connect. So, I dove into the CLI. If you want to know how to get to the CLI in Unifi USW switches, see my other forum post here: CLI enable on Unifi USW.
Configure the switch side SNMP
View your current configuration:
show snmp show snmp engineID show snmp group show snmp user
Now, here are the commands that worked for me:
configure snmp-server v3-host 10.1.149.51 yoursnmpuser traps priv exit write memory
Configure the switch side sFlow
configure sflow receiver 1 owner mysnmpname 10.1.149.51 6343 2000000 2
This sets up an sflow receiver with in slot 1, owner is a friendly name you can set, IP is the SNMP monitoring server, port 6343, max datagram size is 2000000, timeout is 2.
Set the ports that will be enabled for sflow
sflow source-interface network interface 0/1-0/52 sflow sampler 1 sflow sampler rate 4096 sflow poller 1 sflow poller interval 20 exit ##Save configuration## exit write memory ## Verify show sflow receivers show sflow samplers show sflow pollers show sflow agent
Important notes on the SNMP version
In the "new" UI in the Unifi network application, they don't show you what the encryption and authentication methods are. However, I can confirm those are the following:
- SNMP Version: v3 - Authentication Method: SHA (not MD5!) - Encryption Type: AES (not DES)
Hopefully, these notes will help anyone else who is struggling to get SNMPv3 up and working on a Unifi USW enterprise network switch.