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CONTENTS
• IETF / SNMP INTRO
• SNMP version 2
• COMPARISON TO CMIP / CMOL
• MIBs
• RMON
• NEW DEVELOPMENTS
• FURTHER INFORMATION
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IETF STANDARDIZATION
WORKINGDOCUMENT
PROPOSEDSTANDARD
FULLSTANDARD
HISTORICAL
HISTORICAL
implementationexperience
after a maximum
after a maximumof 4 years
of 2 years
several independentimplementationsmust interwork
must be obtained
DRAFTSTANDARD
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HISTORY IETF
1987
1988
1989
1990
1991
1992
1993
HEMS/HEMP SGMP CMOT
SNMPv2
SNMPdraft
standard
SNMP security
proposedstandard
1994
1995
fullstandard
SMP
proposedstandard
draftstandard
implementationexperience
1996
majorchanges
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SNMPv1 STRUCTURE
MIB
MANAGEMENT
APPLICATION
TRANSPORT SERVICE
manager agent
SET
GET / GET-NEXT
TRAP
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SNMPv1 MESSAGE & PDU STRUCTURE
NAME 1 VALUE 1 NAME 2 VALUE 2 ••• ••• NAME n VALUE n
PDU TYPE* ERROR
VARIABLE BINDINGSSTATUSREQUEST
IDERRORINDEX
VERSION COMMUNITY SNMP PDU
variable bindings:
SNMP PDU:
SNMP message:
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PROXY MANAGEMENT
MANAGER PROXY AGENT NON-SNMP AGENT
SNMPPROPRIETARY
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SNMPv2
APRIL 1993:• PROPOSED STANDARD
• RFC 1441 - RFC1452• PARTY BASED SECURITY MODEL
JUNE 1995:• PARTY BASED MODEL REJECTED
• NEW PROPOSALS APPEARED
JANUARY 1996:• SNMPv2C BECAME DRAFT STANDARD
• RFC 1901 - RFC 1908• COMMUNITY BASED SECURITY MODEL
SECURITY:• SNMPv2 USER SECURITY MODEL (USEC)
• SNMPv2*
MANAGEMENT HIERARCHY:• DISMAN WORKING GROUP
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SNMPv2 GOALS
IMPROVED PERFORMANCE• GET-BULK PDU
SECURITY• AUTHENTICATION
• ENCRYPTION• ACCESS CONTROL
MANAGEMENT HIERARCHY• MANAGER TO MANAGER COMMUNICATION
OTHER IMPROVEMENTS
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OTHER IMPROVEMENTS
• DEFINITION OF ADDITIONAL DATA TYPESAND FORMALISMS
BASED ON IMPLEMENTATION EXPERIENCE
• TRANSPORT SERVICE INDEPENDENCE:MAPPINGS FOR SNMPV2
OVER SEVERAL TRANSPORTS ARE DEFINED
• RECORDING THE UNWRITTEN RULES OF SNMP- ROW STATUS PLUS OTHER TEXTUAL CONVENTIONS
• REDEFINED TRAP PDU- HAS SAME PDU FORMAT AS OTHER PDUs