Some Printers classifying as IP Routers?

[Paul125]

Hello, we are discovery more than 2000 printers in our environment. We recently came across an issue where some(50+) printers being discovered as IP router. We are keep on changing them back to Printers but discovery still modifying the class to IP Routers. I thought it's something to do with OIDs but when I check the OID in the input I don't any sysObjectID returned from the devices that has this issue. Below is the example. Does anyone has the same issue? Please let me know. Thanks!

OID returned:

OID not returned:

[shaunbrachmann]

Paul,

You might want to look at the classifiers.  Some printers do in fact have some routing capability so you may have to filter out where sysDescr does not contain "Canon" or some other criteria.

Regards,

Shaun Brachmann

[Paul125]

Thanks for the reply Shaun. If I add sysDescr does not contain 'Xerox' to the router classification, what it will classified as after? A Printer? Thanks!

[doug_schulze]

So first take a look at this post where I walk through the classification process for a similar issue.  Whats happening Id be (without seeing your full payload is that the devices probably showed they forwarded packets and was caught with line ~258 in the SNMP Classify Sensor

 // catch routers that have never forwarded packets - if it forwards, and it's nothing else, then it's a router...
        if (!(isHost || isPrinter || isAPC || isNetware || isRouter || isSwitch || isUPS) && (forwarder == 1))
            capabilities['routing'] = 'true';

What you might try doing since the printers are not consistent with the SysOID is put in the router classification criteria 'sysDescr' does not contain 'Xerox'

[Paul125]

Thanks for the reply Doug. If I add sysDescr does not contain 'Xerox' to the router classification, what it will classified as after? A Printer? Thanks!