6 Replies Latest reply on Jun 8, 2017 10:37 AM by cvenom96

    SNMPv3 for HP Laserjet printer

    cvenom96

      Despite searching all around the internet and on thwack, I can't find an answer for this. We want to import our printers using SNMPv3. We've tried this on a couple of different HPs but no luck. We specify the username, Context, authentication and privacy information as specified in the printer but testing continues to fail. We use manage engine for asset management and can't get it to work with the printers either. Is there something specific in how the printer or Solarwinds needs to be configured for this to work?

        • Re: SNMPv3 for HP Laserjet printer
          d09h

          If you do SNMPv2 does it work for you?  I'm suggesting a test that you perform quickly and then reconfigure for v3.  This could help validate SNMP connectivity end-to-end.

            • Re: SNMPv3 for HP Laserjet printer
              cvenom96

              d09h, tested SNPMv2 and it works just fine. I've read some info suggesting that it may need to be a 16bit hexadecimal value but not clear if that should be set on the printer or what I would supply in Solarwinds. I don't feel it's an issue with Solarwinds but with how SNMPv3 is handled on the printer. I know you're supposed to be able to use it with the HP Web Jetadmin application but it would be rather convoluted that that protocol can't be used by anything other than their own application.

                • Re: SNMPv3 for HP Laserjet printer
                  d09h

                  Can you successfully SNMPwalk the device with SNMPv3 credentials?  SolarWinds has been installing an SNMPwalk utility during NPM install for years...you probably have the snmpwalk.exe tool on your pollers.

                  • Re: SNMPv3 for HP Laserjet printer
                    d09h

                    There were some devices I had to monitor that would fail the process to add them via Network Sonar Discovery or even adding one at a time with SNMPv3.  I was able to add them as ICMP or external and then convert to SNMPv3 despite the credentials not working.  NPM was able to monitor, but the impression during the process to add the node was that it was pointless.  Custom MIB polling those devices worked for me though, even though the test SNMP button gave the impression it would not. I mention this on the off chance that your devices act this way.

                • Re: SNMPv3 for HP Laserjet printer
                  Jeff Catlin

                  Not sure how to help, but I found this and figured I would share it just in case it is part of the problem you are running into:

                   

                  Assisting a customer with SNMPv3, we run into persistent problems trying

                  to configure SNMPv3 on some HP printers and accessing the device over

                  SNMPv3.

                   

                  The printer comes with a device configuration web page where you have to

                  fill in a "Authentication Key". This key should be a "16byte hexadecimal

                  value" (32 characters), otherwise you get an error message.

                   

                  No matter what configuration we tried (and trying to figure out how to

                  convert the HP "Authentication Key" to our Authentication password),

                  each SNMPv3 request we sent, returned an usmStatsWrongDigests error.

                  Searching the web, including some HP forums, it turns out that no one

                  from HP ever replies or knows the answer.

                   

                   

                  The customer has found the problem and reported back that two issues are

                  involved:

                   

                  1. The device configuration page doesn't work. You must use the HP

                  WebJetAdmin program.

                   

                  2. There's a pervasive error in HP's own documentation. They repeatedly

                  assert that the context name is "jetDirect". It is not. It is

                  "Jetdirect". After this was discovered on a trial and error basis, it

                  was found correct on the manual for one of their large colour printers.

                    • Re: SNMPv3 for HP Laserjet printer
                      cvenom96

                      This key should be a "16byte hexadecimal

                      value" (32 characters), otherwise you get an error message.

                       

                      Turns out this was the problem. Once I gave it a 32 character authentication and privacy passphrase/password, it worked fine with the MD5/DES security settings. Oddly enough, on our newest printers, they have options for SHA1 and AES-128 which did not need this long of a passphrase.

                       

                      Thank you everyone for your help!