Cabletron Systems ELS10-26 Mib Primitive Types, Introduction, 1 Primitive Descriptions, Size

Introduction

1.5 MIB PRIMITIVE TYPES

The MIB definitions in this document may reference the primitive types that are described in the Structure and Identification of Management Information for TCP/IP-based Internets, RFC 1155. RFC 1155 is based on the Specification of Abstract Syntax Notation One, ASN.1. The primitive types are described in Table 1-1.

Table 1-1 Primitive Descriptions

Primitive	Size	Description
		Enumerated Integer with possible true (1)
Boolean	1 byte	or false (2) values; note that the ASN.1
		BOOLEAN primitive type is not used
BridgeID	8 bytes	Priority and MAC address used to identify
		a spanning tree bridge
Counter	4 bytes max	Unsigned value
DisplayString	n X 1 byte	Array of printable ascii characters
Gauge	4 bytes	Non-negative integer
Integer	4 bytes max	Signed value
IpAddress	4 bytes	Internet address
MacAddress	6 bytes	Ethernet address
OctetString	n X 1 byte	Array of bytes
PhysAddress	n X 1 byte	Array of bytes, using the same as a MAC
		Address
PortID	2 bytes	Priority and port number used to identify a
		spanning tree port
		Max time counter with a granularity of
TimeTicks	4 bytes	1/100th of a second (also known as
		centiseconds)

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