Seamless Decoding Of Normal And OID Compressed SNMP PDUs -An Enhancement To Wireshark
Premini.F, Hari T S Narayanan · Procedia Engineering · 2012
Networking has become critical in every aspect of today's world. As demands increase, networks have become larger, more complex, and more heterogeneous and are widely distributed throughout the world. In order to manage the resources on the network, Simple Network Management Protocol (SNMP), a set of standards for network management was developed. The requests and response for retrieving and setting, fault and configuration information about the resources use a fully distinguished Object Identifier (OID) of the resources. These OIDs have redundant information in them. There are a number of OID compression techniques to reduce this redundancy in order to save bandwidth and processing time. Wireshark and other packet analyzer tools do not decode these compressed OIDs yet. This paper demonstrates an enhancement to Wireshark to successfully recognize and decode an optimized SNMP (Protocol Data Units) PDUs and non-optimized SNMP PDUs seamlessly as a proof of concept. In future these decoding can be ported to other packet analyzer tools and other optimized PDUS.