SNMP Detection

I am attempting to detect SNMP using NMAP but am not getting results I am
expecting.  I have tried this a couple different ways.

I have a target with SNMP working and I have confirmed it is responding
using snmpwalk.

When I use:

nmap -sU -p 161 --script=snmp-interfaces 10.255.22.222

I get:

Starting Nmap 7.01 ( https://nmap.org ) at 2017-03-21 11:45 CDT
Nmap scan report for testuser-pc.rhsnet.org (10.255.22.222)
Host is up (0.00053s latency).
PORT    STATE         SERVICE
161/udp open|filtered snmp





I also tried:

nmap -sU -sV -p 161 10.255.22.222

I get:

Starting Nmap 7.01 ( https://nmap.org ) at 2017-03-21 11:38 CDT
Nmap scan report for testuser-pc.rhsnet.org (10.255.22.222)
Host is up (0.00052s latency).
PORT    STATE         SERVICE VERSION
161/udp open|filtered snmp



The above was done on a Linux box but I have tried this with NMAP 7.40
on Windows and get the same results.


Is this the output I should get or should there be more information?

Tim

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