Decoding UDP SNMP packets

["Allison, Jason (JALLISON)" <JALLISON () arinc com>]

I am in the process on writing a sniffer for decoding SNMP packets, as our
company utilizes a NMS.  I feel I have read a good bit on SNMP, ASN.1, SMI,
the 400 RFCs on the subject, as well as having written a number of pcap
sniffing utilities for decoding my works proprietary messaging system (ip,
udp, tcp, etc), but I am feel like all my research in decoding SNMP is
running me in circles.

I am hoping there are persons on this list that can discuss decoding UDP
SNMP packets.  I chose this forum hoping to get a developers perspective as
well as the snmp-forum () cert org mailing list seems to be stalled for the
short term.  If there is a good starting point for readings on SNMP and its
UDP packet layout please point me in that direction?

Thanks in advance,

Jason Allison
Principal Engineer
ARINC Incorporated
Office:  (410) 266-2006
FAX:  (410) 573-3026

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