V3 get command

[DrewScatterday]

Not sure if I'm missing something. I'm on WSL linux with python 3.10 in a conda env

I did the following:

• pip install pysnmp-lextudio
• pip install snmpclitools-lextudio
• snmpget.py -v3 -l authPriv -u usr-md5-des -A authkey1 -X privkey1 demo.pysnmp.com sysDescr.0

I got some error messages but was able to resolve it by changing to this:

• snmpget -v 3 -l authPriv -u usr-md5-des -A authkey1 -X privkey1 demo.pysnmp.com sysDescr.0

[DrewScatterday]

One tiny other thing I noticed was I couldn't get USM to work with just strings. For example:

user = UsmUserData('usr-md5-des', 'authkey1', 'privkey1')

I got an error message: pysnmp.error.PySnmpError: Unsupported authentication object

But changing to this seemed to solve for me

user = UsmUserData(userName='usr-md5-des', authKey='authkey1', privKey='privkey1')

Maybe this thread will help someone from Google

[lextm]

Please go through the documentation on https://pysnmp.com and the examples folder in this repo if you want to learn more about this project.

[DrewScatterday]

Hey @lextm Thank your maintaining this repo and keeping it alive!

A few misunderstandings on my part:

• I overlooked in the docs here for USM https://www.pysnmp.com/pysnmp/docs/api-reference?highlight=v3#pysnmp.hlapi.UsmUserData you have to give it the object name and not just strings.
• I got confused because I was referencing this outdated example for a v3 example https://pysnmp.readthedocs.io/en/latest/examples/hlapi/v3arch/asyncore/sync/manager/cmdgen/snmp-versions.html#snmpv3-auth-md5-privacy-des And you can see in an older version they were using UsmUserData('usr-md5-des', 'authkey1', 'privkey1')
• in terms of the snmpget.py I totally misunderstood that these cli tools https://github.com/lextudio/snmpclitools are written in pure python to mimic snmp-net commands. However after doing pip install snmpclitools-lextudio and trying to run snmpget.py -v3 -l authPriv -u usr-md5-des -A authkey1 -X privkey1 demo.pysnmp.com sysDescr.0 My linux system is not able to find snmpget.py. So not sure what I messed up there but the CLI is not applicable to my use case

Have a great day

[lextm]

"https://pysnmp.readthedocs.io" has been a pain for long, but whoever set it up isn't responsive to any inquiry to shut it down. It takes time for "https://pysnmp.com" to grow higher in search engine results and replace that obsolete site one day.

I just updated https://www.pysnmp.com/snmpclitools/ to reflect latest changes. You no longer need to add .py to execute the commands, but simply snmpget. However, this will conflict to Net-SNMP if you happen to install that on the same machine. You will need to hack system path to make sure the PySNMP command line tools are resolved before Net-SNMP executable.

[DrewScatterday]

Yeah I've been mislead by that out of date site/repo a few times

The demo.snmp agent url that "https://pysnmp.readthedocs.io/" references is no longer active so I started really getting confused when trying to poll with snmp get messages and nothing was working. So thanks for running and maintaining demo.pysnmp.com because it makes testing snippets really easy!