Management information base for version 2 of the simple network management protocol
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Management Information Base for Version 2 of the Simple Network Management Protocol. (MIB for SNMPv2). Presented by Zhou Ji. By SNMPv2 Working Group. 1. What is MIB?. Management Information Base (MIB) is the set of variables (database) that a router running SNMP maintains.

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Management information base for version 2 of the simple network management protocol l.jpg

Management Information Base for Version 2 of the Simple Network Management Protocol

(MIB for SNMPv2)

Presented by Zhou Ji

By SNMPv2 Working Group


1 what is mib l.jpg
1. What is MIB? Network Management Protocol

  • Management Information Base (MIB) is the set of variables (database) that a router running SNMP maintains.

  • MIB specifies the data items a host or router must keep and the operations allowed on each.


2 what is the relation between mib and snmp l.jpg
2. What is the relation between MIB and SNMP? Network Management Protocol

  • SNMP does not specify exactly which data can be accessed.

  • MIB is a separated standard dealing with that.

  • Keeping MIB definition independent of network management protocol (SNMP) has advantages for both vendors and users.


3 what kind of information is in mib l.jpg

Categories Network Management Protocol

System

interface

add.trans

ip

icmp

tcp

udp

egp

3. What kind of information is in MIB?


Examples of mib variables l.jpg
Examples of MIB variables Network Management Protocol


4 how are variables in mib defined l.jpg
4. How are variables in MIB defined? Network Management Protocol

  • The rules: Structure of Management Information (SMI)

  • The notation: Abstract Syntax Notation 1 (ASN.1)

  • The names: object identifier name space


What does smi do l.jpg
What does SMI do? Network Management Protocol

  • Place restriction on the types of variables allowed in MIB;

  • Specify the rules for naming those variables;

  • create rules for defining variable type.


What is the good of asn 1 l.jpg
What is the good of ASN.1? Network Management Protocol

  • Keep standards documents unambiguous

  • simplify the implementation of network management protocols

  • guarantee interoperability


Object identifier namespace l.jpg
Object identifier namespace Network Management Protocol

  • Object identifier namespace is absolute (global)

  • the object identifier hierarchy and the authority hierarchy

  • both short strings and integers to identify them


Hierarchy l.jpg
hierarchy Network Management Protocol


5 what are in rfc 1907 l.jpg
5. What are in RFC 1907? Network Management Protocol

  • MIB for SNMP

  • category

  • module

  • import modules

  • example


Hierarchy in rfc 1907 l.jpg
Hierarchy in RFC 1907 Network Management Protocol


Example variable l.jpg
Example variable Network Management Protocol

sysUpTime OBJECT-TYPE

SYNTAX TimeTicks

MAX-ACCESS read-only

STATUS current

DESCRIPTION

"The time (in hundredths of a second) since the network

management portion of the system was last re-initialized."

::= { system 3 }


Summary l.jpg
Summary Network Management Protocol

  • SNMP (Simple Network Management Protocol)

  • MIB (Management Information Base)

  • SMI (Structure of Management Information)

  • ASN.1 (Abstract Syntax Notation 1)


References l.jpg
References Network Management Protocol

  • RFC 1450, 1907 (MIB for SNMPv2)

  • RFC 1441 (Introduction to SNMpv2)

  • RFC 1442, 1902 SMI for SNMPv2

  • Specification of ASN.1, ISO


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