Eric Stewart: Running Off At The Mouth

Tag: snmp

DPDiscover 1.51: Cacti Plugin

by on Nov.14, 2013, under Networking, Technology

I wrote a Cacti plugin I called DPDiscover – Discovery Protocol Discover, which uses LLDP, CDP, and FDP information pulled from SNMP to ‘spider’ a network and attempt to automatically add equipment to Cacti. It is heavily based off of the original “Auto Discovery” plugin that would sweep IP ranges.




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Perl’s Net::SNMP and get_table() – Bulk vs Next Request

by on Sep.27, 2013, under Networking, Technology

An attempt to communicate an issue (and the solution) I ran into with Perl’s Net::SNMP function “get_table”, that would result in a “The message size exceeded the buffer maxMsgSize of 1452” error. It took a couple of packet captures and Googling to figure out why this problem was occurring and implement a fix.







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