Definitions of Managed Objects for RS-232-like Hardware Devices using SMIv2
RFC 1659
Document | Type |
RFC - Draft Standard
(July 1994; No errata)
Obsoletes RFC 1317
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Last updated | 2013-03-02 | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Stream | WG state | (None) | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 1659 (Draft Standard) | |
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | (None) | ||
Send notices to | (None) |
Network Working Group B. Stewart Request for Comments: 1659 Xyplex, Inc. Obsoletes: 1317 July 1994 Category: Standards Track Definitions of Managed Objects for RS-232-like Hardware 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 ................................................ 1 2. The SNMPv2 Network Management Framework ..................... 1 2.1 Object Definitions ......................................... 2 3. Overview .................................................... 2 3.1 Relationship to Interface MIB .............................. 3 4. Definitions ................................................. 3 5. Acknowledgements ............................................ 20 6. References .................................................. 20 7. Security Considerations ..................................... 21 8. Author's Address ............................................ 21 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 RS-232-like 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 1659 RS-232-like 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 RS-232-like Hardware Device MIB applies to interface ports that might logically support the Interface MIB, a Transmission MIB, or the Character MIB. The most common example is an RS-232 port with modem signals. The RS-232-like Hardware Device MIB is mandatory for all systems that have such a hardware port supporting services managed through some other MIB. The MIB includes multiple similar types of hardware, and as a result contains objects not applicable to all of those types. The compliance definitions herein thus have a general group for all implementations, and separate groups for the different types of ports, such as asynchronous and synchronous. The RS-232-like Hardware Port MIB includes RS-232, RS-422, RS-423, V.35, and other asynchronous or synchronous, serial physical links with a similar set of control signals. The MIB contains objects that relate to physical layer connections. Such connections may provide interesting hardware signals (other than for basic data transfer), such as RNG and DCD. Hardware ports also have such attributes as speed and bits per character. Stewart [Page 2] RFC 1659 RS-232-like MIB July 1994 The MIB comprises one base object and four tables, detailed in the following sections. The tables contain objects for all ports, asynchronous ports, and input and output control signals. 3.1. Relationship to Interface MIB The RS-232-like MIB is one of many MIBs designed for layered use as described in the Interface MIB [5]. In most implementations where it is present, it will be in the lowest interface sublayer, that is, theShow full document text