User manual

SNMP
33002479 06 07/2008 227
ASN.1 Naming Scheme
ASN.1 Overview Abstract Syntax Notation One (ASN.1) is a formal language for abstractly describing
messages to be exchanged between distributed computer systems.
An Example Objects in a MIB are defined with the ASN.1 naming scheme that assigns each
object a long prefix that guarantees that the name will be unique. For example, an
integer that counts the number of IP datagrams that a device has received is named:
iso.org.dod.internet.mgmt.mib.ip.ipinReceives.
The following figure depicts the ASN.1 naming scheme example.
This object name is represented in an SNMP message by assigning each part an
integer. So, the above message would appear as 1.3.6.1.2.2.4.3.
Each integer has the following meaning:
z 1 = ISO (International Organization for Standardization)
iso (1)
org (3)
dod (6)
internet (1)
experimental (3)
directory (1)
mgmt (2)
mib (2)
system
(1)
interfaces
(2)
address
translation
(3)
ip (4)
ipForwarding (1)
ipDefaultTTL (2)
ipinReceives (3)