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TCP/IP Guide by Charles M. Kozierok

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SNMP Version 2 (SNMPv2) Message Formats

After SMNPv1 had been in use for several years, certain issues with it were noticed and areas for improvement identified. This led to the development of the original SNMPv2, which was intended to enhance SNMPv1 in many areas, including MIB object definitions, protocol operations, and security. This last area, security, led to the proliferation of SNMPv2 version variants that I described in Chapter 65.

Since there are several different SNMPv2s, there are also several message formats for SNMPv2. This is confusing, but it would be even worse without the modular nature of SNMP messages coming to the rescue. The protocol operations in SNMPv2 were changed from SNMPv1, which necessitated some modifications to the ...

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