1. SNMP Books or Articles
http://www.faqs.org/faqs/snmp-faq/part1/
http://www.faqs.org/faqs/snmp-faq/part2/
http://www.snmplink.org/
http://www.simple-times.org/
http://docstore.mik.ua/orelly/networking_2ndEd/snmp/index.htm

2. RFC-SNMP
RFC1155，1212，1215
SMIv1
RFC2578，2579，2580
SMIv2
RFC1156，1213
MIB，MIBII
RFC1157
SNMPv1
RFC1901，3416，3417
SNMPv2c
RFC3417，3412，3414
SNMPv3

3. RFC-MIB
MIB II (RFC 1213)
Host Resources MIB (RFC 2790)
ATM MIB (RFC 2515)
Frame Relay DTE Interface Type MIB (RFC 2115)
BGP Version 4 MIB (RFC 1657)
RDBMS MIB (RFC 1697)
RADIUS Authentication Server MIB (RFC 2619)
Mail Monitoring MIB (RFC 2249)
DNS Server MIB (RFC 1611)
……

http://www.rfc-editor.org/

RFC1155 Structure and Identification of Management Information for TCP/IP-based Internets
RFC1156 Management Information Base for Network Management of TCP/IP-based internets
RFC1157 A Simple Network Management Protocol (SNMP)
RFC1187 Bulk Table Retrieval with the SNMP
RFC1213 Management Information Base for Network Management of TCP/IP-based internets:MIB-II
RFC1214 OSI Internet Management: Management Information Base
RFC1215 A Convention for Defining Traps for use with the SNMP
RFC1514 Host Resources MIB
RFC1628 UPS Management Information Base
RFC1901 Introduction to Community-based SNMPv2
RFC1909 An Administrative Infrastructure for SNMPv2
RFC1910 User-based Security Model for SNMPv2
RFC2567 Coexistence between Version 1, Version 2, and Version 3 of the Internet-standard Network Management Frameworkrr
RFC3411 An Architecture for Describing Simple Network Management Protocol (SNMP) Management Frameworks
RFC3412 Message Processing and Dispatching for the Simple Network Management Protocol (SNMP)
RFC3413 Simple Network Management Protocol (SNMP) Applications
RFC3414 User-based Security Model (USM) for version 3 of the Simple Network Management Protocol (SNMPv3)
RFC3415 View-based Access Control Model (VACM) for the Simple Network Management Protocol (SNMP)
RFC3416 Version 2 of the Protocol Operations for the Simple Network Management Protocol (SNMP)
RFC3417 Transport Mappings for the Simple Network Management Protocol (SNMP)
RFC3418 Management Information Base (MIB) for the Simple Network Management Protocol (SNMP)
RFC3434 Remote Monitoring MIB Extensions for High Capacity Alarms
RFC5424 The Syslog Protocol

SNMP相关的RFC建议和链接