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Table Of Contents  The TCP/IP Guide
 9  TCP/IP Application Layer Protocols, Services and Applications (OSI Layers 5, 6 and 7)
      9  TCP/IP Network Configuration and Management Protocols (BOOTP, DHCP, SNMP and RMON)
           9  TCP/IP Network Management Framework and Protocols (SNMP and RMON)
                9  TCP/IP Structure of Management Information (SMI) and Management Information Bases (MIBs)

Previous Topic/Section
TCP/IP MIB Object Descriptors and Identifiers and the Object Name Hierarchy and Name Notation
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1
2
34
Next Page
TCP/IP Simple Network Management Protocol (SNMP) Protocol
Next Topic/Section

TCP/IP MIB Modules and Object Groups
(Page 2 of 4)

Generic MIB Object Groups

Table 208 shows the eight generic SNMP groups defined in RFC 1158 along with their codes, names and numbers.


Table 208: SNMP Generic MIB Object Groups

Group Name

Group Code

Group Number

Full Group Identifier

Description

system

sys

1

1.3.6.1.2.1.1

General objects of relevance to all or most devices. For example, a general description of the device is an object in this group, as is the identifier of the object. Later MIB versions greatly expanded the number of variables in this group.

Interfaces

if

2

1.3.6.1.2.1.2

Objects related to the IP interfaces between this device and the internetwork; recall that a regular host normally has one interface while a router has two or more.

at (address translation)

at

3

1.3.6.1.2.1.3

Objects used for IP address translation. (No longer used.)

ip

ip

4

1.3.6.1.2.1.4

Objects related to the IP layer of the device as a whole (as opposed to interface-specific information in the if group.)

icmp

icmp

5

1.3.6.1.2.1.5

Objects related to the operation of the Internet Control Message Protocol.

tcp

tcp

6

1.3.6.1.2.1.6

Objects related to the operation of the Transmission Control Protocol.

udp

udp

7

1.3.6.1.2.1.7

Objects related to the operation of the User Datagram Protocol.

egp

egp

8

1.3.6.1.2.1.8

Objects related to the operation of the Exterior Gateway Protocol.

cmot

cmot

9

1.3.6.1.2.1.9

Objects related to running the CMIP protocol over TCP (historical, not used.)

transmission

trans

10

1.3.6.1.2.1.10

Objects related to the specific method of information transmission used by each interface on the system.

snmp

snmp

11

1.3.6.1.2.1.11

Objects used to manage SNMP itself.


All of the groups in this table are fairly generic, and with the exception of the one about EGP, apply to pretty much every TCP/IP system using SNMP. The first five groups and the last one are “mandatory” for all systems; the others are used only by devices that use the indicated protocols or functions. The mention of EGP, a routing protocol now considered obsolete, shows the age of this list.


Previous Topic/Section
TCP/IP MIB Object Descriptors and Identifiers and the Object Name Hierarchy and Name Notation
Previous Page
Pages in Current Topic/Section
1
2
34
Next Page
TCP/IP Simple Network Management Protocol (SNMP) Protocol
Next Topic/Section

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Version 3.0 - Version Date: September 20, 2005

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