Query on SNMP OIDs in Classification phase

Suggy
Giga Sage

When I execute discovery for a network device, in the input payload I see something like this:

SNMP - Classify:253 OIDs

SNMP - Classify:320 OIDs

SNMP - Classify:1121 OIDs

 

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What does those numbers actually indicate?

Is there anywhere that we can see all those OID's in ServiceNow?

 

1 ACCEPTED SOLUTION

doug_schulze
ServiceNow Employee
ServiceNow Employee

Nothing really, I just used them to know that something came back. The key is what came back, you'd expect to see the sysDescr,  sysOID at a minimum.  We also use returns such as IP Forwarding and other queries to help the classification phase. Meaning, does it route, print, switch or power.  You can see these determinations at the bottom of the SNMP Classify sensor.  There was a time in my horse drawn discovery days that we relied more on the classification critera then sysOID. In todays discovery its kinda opposite. We started with just 400 SNMP SysOIDs, many of which I had to look up and load them into our OOB, now its thousands.. 🙂

 

doug_schulze_0-1757800511741.png

 

doug_schulze_1-1757800616685.png

doug_schulze_2-1757800657678.png

 

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7 REPLIES 7

hi @doug_schulze but in the payload I dont see those number of OIDs being fetched. What is the use of seeing those numbers like 253 OIDs, 245 OIDs etc? What do I do with those numbers?

doug_schulze
ServiceNow Employee
ServiceNow Employee

Nothing really, I just used them to know that something came back. The key is what came back, you'd expect to see the sysDescr,  sysOID at a minimum.  We also use returns such as IP Forwarding and other queries to help the classification phase. Meaning, does it route, print, switch or power.  You can see these determinations at the bottom of the SNMP Classify sensor.  There was a time in my horse drawn discovery days that we relied more on the classification critera then sysOID. In todays discovery its kinda opposite. We started with just 400 SNMP SysOIDs, many of which I had to look up and load them into our OOB, now its thousands.. 🙂

 

doug_schulze_0-1757800511741.png

 

doug_schulze_1-1757800616685.png

doug_schulze_2-1757800657678.png

 

Thanks for the clarification, Doug!!