📄 rfc1759.txt
字号:
Network Working Group R. Smith
Request for Comments: 1759 Texas Instruments
Category: Standards Track F. Wright
Lexmark International
T. Hastings
Xerox Corporation
S. Zilles
Adobe Systems, Inc.
J. Gyllenskog
Hewlett-Packard Company
March 1995
Printer MIB
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 ................................................ 3
1.1 Network Printing Environment ............................... 3
1.2 Printer Device Overview .................................... 4
1.3 Categories of Printer Information .......................... 5
1.3.1 Descriptions ............................................. 5
1.3.2 Status ................................................... 5
1.3.3 Alerts ................................................... 5
2. Printer Model ............................................... 6
2.1 Overview of the Printer Model .............................. 8
2.2 Printer Sub-Units .......................................... 8
2.2.1 General Printer .......................................... 8
2.2.2 Inputs ................................................... 9
2.2.3 Media .................................................... 9
2.2.4 Outputs .................................................. 9
2.2.5 Finishers ................................................ 10
2.2.6 Markers .................................................. 10
2.2.7 Media Paths .............................................. 11
2.2.8 System Controller ........................................ 11
2.2.9 Interfaces ............................................... 11
2.2.10 Channels ................................................ 12
2.2.11 Interpreters ............................................ 12
2.2.12 Console ................................................. 12
2.2.13 Alerts .................................................. 13
2.2.13.1 Status and Alerts ..................................... 13
Smith, Wright, Hastings, Zilles & Gyllenskog [Page 1]
RFC 1759 Printer MIB March 1995
2.2.13.2 Overall Printer Status ................................ 13
2.2.13.2.1 Host MIB Printer Status ............................. 15
2.2.13.2.2 Sub-unit Status ..................................... 17
2.2.13.3 Alert Tables .......................................... 18
2.2.13.4 Alert Table Management ................................ 19
2.3 Read-Write Objects ......................................... 20
2.4 Enumerations ............................................... 22
2.4.1 Registering Additional Enumerated Values ................. 22
3. Objects from other MIB Specifications ....................... 22
3.1 System Group objects ....................................... 22
3.2 System Controller .......................................... 23
3.3 Interface Group objects .................................... 23
4. Textual Conventions ......................................... 23
5. The General Printer Group ................................... 27
5.1 The Cover Table ............................................ 30
5.2 The Localization Table ..................................... 31
5.3 The System Resources Tables ................................ 33
6. The Responsible Party group ................................. 35
7. The Input Group ............................................. 35
8. The Extended Input Group .................................... 41
9. The Input Media Group ....................................... 42
10. The Output Group ........................................... 44
11. The Extended Output Group .................................. 48
12. The Output Dimensions Group ................................ 49
13. The Output Features Group .................................. 51
14. The Marker Group ........................................... 52
15. The Marker Supplies Group .................................. 58
16. The Marker Colorant Group .................................. 62
17. The Media Path Group ....................................... 64
18. The Channel Group .......................................... 68
18.1 The Channel Table and its underlying structure ............ 69
18.2 The Channel Table ......................................... 70
19. The Interpreter Group ...................................... 73
20. The Console Group .......................................... 81
20.1 The Display Buffer Table .................................. 82
20.2 The Console Light Table ................................... 83
21. The Alerts Group ........................................... 85
21.1 The Alert Time Group ...................................... 92
22. Appendix A - Glossary of Terms ............................. 98
23. Appendix B - Media Size Names .............................. 101
24. Appendix C - Media Names ................................... 103
25. Appendix D - Roles of Users ................................ 107
26. Appendix E - Participants .................................. 111
27. Security Considerations .................................... 113
28. Authors' Addresses ......................................... 113
Smith, Wright, Hastings, Zilles & Gyllenskog [Page 2]
RFC 1759 Printer MIB March 1995
1. Introduction
1.1. Network Printing Environment
The management of producing a printed document, in any computer
environment, is a complex subject. Basically, the task can be divided
into two overlapping pieces, the management of printing and the
management of the printer. Printing encompasses the entire process of
producing a printed document from generation of the file to be
printed, selection of a printer, choosing printing properties,
routing, queuing, resource management, scheduling, and final printing
including notifying the user. Most of the printing process is outside
the scope of the model presented here; only the management of the
printer is covered.
Smith, Wright, Hastings, Zilles & Gyllenskog [Page 3]
RFC 1759 Printer MIB March 1995
Figure 1 - One Printer's View of the Network
system printer asset user user user
manager operator manager
O O O O O O
/|\ /|\ /|\ /|\ /|\ /|\
/ \ / \ / \ / \ / \ / \
| | | | | |
+---------+ +-------+ +-------+ +-------+ +-----------+ +-----------+
|configur-| |printer| | asset | |printer| | user | | user |
|ator | |manager| |manager| |browser| |application| |application|
+---------+ +-------+ +-------+ +-------+ +-----------+ +-----------+
^ ^ ^ ^ | |
|R/W |R/W |R |R +-----------+ +-----------+
| | | | | spooler | | spooler |
| | | | +-----------+ +-----------+
| | | | | |
| | | | +-----------+ +-----------+
| | | | |supervisor | |supervisor |
| | | | +-----------+ +-----------+
| | | | ^ ^ ^ ^
| | | | |R |R/W |R |R/W
v v | | | | | |
================================================== | ===== |
| print| print|
|SNMP data| data|
+-----+ +-------+ PCL| PCL|
| MIB |<------>| agent | PostScript| PostScript|
+-----+ +-------+ NPAP| NPAP|
|unspecified etc.| etc.|
+=============+ +-----------------+ | |
| |--|channel/interface|<--+ |
| | +-----------------+ |
| PRINTER | |
| | +-----------------+ |
| |--|channel/interface|<----------------+
+=============+ +-----------------+
1.2. Printer Device Overview
A printer is the physical device that takes media from an input
source, produces marks on that media according to some page
description or page control language and puts the result in some
output destination, possibly with finishing applied. Printers are
complex devices that consume supplies, produce waste and have
mechanical problems. In the management of the physical printing
device the description, status and alert information concerning the
printer and its various subparts has to be made available to the
Smith, Wright, Hastings, Zilles & Gyllenskog [Page 4]
RFC 1759 Printer MIB March 1995
management application so that it can be reported to the end user,
key operators for the replenishment of supplies or the repair or
maintenance of the device. The information needed in the management
of the physical printer and the management of a printing job overlap
highly and many of the tasks in each management area require the same
or similar information.
1.3. Categories of Printer Information
Information about printers is classified into three basic categories,
descriptions, status and alerts.
1.3.1. Descriptions
Descriptions convey information about the configuration and
capabilities of the printer and its various sub-units. This
information is largely static information and does not generally
change during the operation of the system but may change as the
printer is repaired, reconfigured or upgraded. The descriptions are
one part of the visible state of the printer where state means the
condition of being of the printer at any point in time.
1.3.2. Status
Status is the information regarding the current operating state of
the printer and its various sub-units. Status is the rest of the
visible state of the printer. As an example of the use of status, a
management application must be able to determine if the various sub-
units are ready to print or are in some state that prevents printing
or may prevent printing in the future.
1.3.3. Alerts
An Alert is the representation of a reportable event in the printer.
An event is a change in the state of the printer. Some of those state
changes are of interest to a management application and are therefore
reportable. Typically, these are the events that affect the printer's
ability to print. Alerts usually occur asynchronously to the
operation of the computer system(s) to which the printer is attached.
For convenience below, "alert" will be used for both the event caused
by a change in the printer's state and for the representation of that
event.
Alerts can be classified into two basic categories, critical and
non-critical. A critical alert is one that is triggered by entry
into a state in which the printer is stopped and printing can not
continue until the condition that caused critical alert is
eliminated. "Out of paper", "toner empty" and "output bin full" are
Smith, Wright, Hastings, Zilles & Gyllenskog [Page 5]
RFC 1759 Printer MIB March 1995
examples of critical alerts. Non-critical alerts are triggered by
those events that enter a state in which printing is not stopped.
Such a non-critical state may, at some future time, lead to a state
in which printing may be stopped. Examples of this kind of non-
critical alerts are "input media low", "toner low" and "output bin
nearly full". Or, a non-critical alert may simply provide
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -