<![CDATA[Count SNMP walk results]]>Hi,

As a new user to NetXMS I still cannot believe just how easy it is to use.  I have been looking for a replacement to the old RRD based systems for a while and this is blowing everything else away.  I just have a couple of things I am struggling to get worked out (custom scripting seems the way to go with these) that I would like to iron out before I add it to my production.  I have split them in to two posts to keep it simpler.

This topic is an SNMP Walk query.  I am trying to work out how I can count the lines in a SNMP Walk.  For example, I might want to count the number of Arp entries where no SNMP OID exists.  I would like to be able to get just a count as an integer from walking 1.3.6.1.2.1.4.22.1.2.  Is this possible?

Many thanks.

]]>https://forum.netxms.org/topic/4511/count-snmp-walk-resultsRSS for NodeFri, 13 Nov 2026 18:38:19 GMTTue, 07 Jun 2016 19:50:53 GMT60<![CDATA[Reply to Count SNMP walk results on Tue, 07 Jun 2016 21:00:59 GMT]]>Thanks, Tomas.  Works perfectly  🙂

]]>https://forum.netxms.org/post/20060https://forum.netxms.org/post/20060Tue, 07 Jun 2016 21:00:59 GMT<![CDATA[Reply to Count SNMP walk results on Tue, 07 Jun 2016 20:05:27 GMT]]>Very easy with a "Script" type DCI.

Just create a script named "count_ARP_entries" in the script library, and used that for the DCI parameter.
(DCI origin will of course be "Script")

For the script, you can do this:

walk_oid = "1.3.6.1.2.1.4.22.1.2";

tube = CreateSNMPTransport($node);
if (tube == null)
  return null;

varbinds = SNMPWalk(tube, walk_oid);
if (varbinds == null)
  return null;

return varbinds->size;

Refferences:
https://wiki.netxms.org/wiki/NXSL_Function_Reference
https://wiki.netxms.org/wiki/SG:Script_Examples

]]>https://forum.netxms.org/post/20057https://forum.netxms.org/post/20057Tue, 07 Jun 2016 20:05:27 GMT