Definitions of Managed Objects for Character Stream Devices using SMIv2
RFC 1658
| Document | Type |
RFC - Draft Standard
(July 1994; No errata)
Obsoletes RFC 1316
|
|
|---|---|---|---|
| Last updated | 2013-03-02 | ||
| Stream | IETF | ||
| Formats | plain text pdf html bibtex | ||
| Stream | WG state | (None) | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 1658 (Draft Standard) | |
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | (None) | ||
| Send notices to | (None) | ||
Network Working Group B. Stewart
Request for Comments: 1658 Xyplex, Inc.
Obsoletes: 1316 July 1994
Category: Standards Track
Definitions of Managed Objects for Character Stream Devices
using SMIv2
Status of this Memo
This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.
Table of Contents
1. Introduction ................................................ 2
2. The SNMPv2 Network Management Framework ..................... 2
2.1 Object Definitions ......................................... 3
3. Overview .................................................... 3
3.1 Relationship to Interface MIB .............................. 4
4. Definitions ................................................. 4
5. Acknowledgements ............................................ 17
6. References .................................................. 17
7. Security Considerations ..................................... 18
8. Author's Address ............................................ 18
1. Introduction
This memo defines an extension to the Management Information Base
(MIB) for use with network management protocols in the Internet
community. In particular, it defines objects for the management of
character stream devices.
2. The SNMPv2 Network Management Framework
The SNMPv2 Network Management Framework consists of four major
components. They are:
o RFC 1442 [1] which defines the SMI, the mechanisms used for
describing and naming objects for the purpose of management.
o STD 17, RFC 1213 [2] defines MIB-II, the core set of managed
objects for the Internet suite of protocols.
Stewart [Page 1]
RFC 1658 Character MIB July 1994
o RFC 1445 [3] which defines the administrative and other
architectural aspects of the framework.
o RFC 1448 [4] which defines the protocol used for network
access to managed objects.
The Framework permits new objects to be defined for the purpose of
experimentation and evaluation.
2.1. Object Definitions
Managed objects are accessed via a virtual information store, termed
the Management Information Base or MIB. Objects in the MIB are
defined using the subset of Abstract Syntax Notation One (ASN.1)
defined in the SMI. In particular, each object object type is named
by an OBJECT IDENTIFIER, an administratively assigned name. The
object type together with an object instance serves to uniquely
identify a specific instantiation of the object. For human
convenience, we often use a textual string, termed the descriptor, to
refer to the object type.
3. Overview
The Character MIB applies to ports that carry a character stream,
whether physical or virtual, serial or parallel, synchronous or
asynchronous. The most common example of a character stream device
is a hardware terminal port with an RS-232 interface. Another common
hardware example is a parallel printer port, say with a Centronics
interface. The concept also includes virtual terminal ports, such as
a software connection point for a remote console.
The Character MIB is mandatory for all systems that offer character
stream ports. This includes, for example, terminal servers,
general-purpose time-sharing hosts, and even such systems as a bridge
with a (virtual) console port. It may or may not include character
ports that do not support network sessions, depending on the system's
needs.
The Character MIB's central abstraction is a port. Physical ports
have a one-to-one correspondence with hardware ports. Virtual ports
are software entities analogous to physical ports, but with no
hardware connector.
Each port supports one or more sessions. A session represents a
virtual connection that carries characters between the port and some
partner. Sessions typically operate over a stack of network
protocols. A typical session, for example, uses Telnet over TCP.
Stewart [Page 2]
RFC 1658 Character MIB July 1994
Show full document text