📄 rfc1001.txt
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Network Working Group
Request for Comments: 1001 March, 1987
PROTOCOL STANDARD FOR A NetBIOS SERVICE
ON A TCP/UDP TRANSPORT:
CONCEPTS AND METHODS
ABSTRACT
This RFC defines a proposed standard protocol to support NetBIOS
services in a TCP/IP environment. Both local network and internet
operation are supported. Various node types are defined to accommodate
local and internet topologies and to allow operation with or without the
use of IP broadcast.
This RFC describes the NetBIOS-over-TCP protocols in a general manner,
emphasizing the underlying ideas and techniques. Detailed
specifications are found in a companion RFC, "Protocol Standard For a
NetBIOS Service on a TCP/UDP Transport: Detailed Specifications".
NetBIOS Working Group [Page 1]
RFC 1001 March 1987
SUMMARY OF CONTENTS
1. STATUS OF THIS MEMO 6
2. ACKNOWLEDGEMENTS 6
3. INTRODUCTION 7
4. DESIGN PRINCIPLES 7
5. OVERVIEW OF NetBIOS 10
6. NetBIOS FACILITIES SUPPORTED BY THIS STANDARD 15
7. REQUIRED SUPPORTING SERVICE INTERFACES AND DEFINITIONS 15
8. RELATED PROTOCOLS AND SERVICES 16
9. NetBIOS SCOPE 16
10. NetBIOS END-NODES 16
11. NetBIOS SUPPORT SERVERS 18
12. TOPOLOGIES 20
13. GENERAL METHODS 23
14. REPRESENTATION OF NETBIOS NAMES 25
15. NetBIOS NAME SERVICE 27
16. NetBIOS SESSION SERVICE 48
17. NETBIOS DATAGRAM SERVICE 55
18. NODE CONFIGURATION PARAMETERS 58
19. MINIMAL CONFORMANCE 59
REFERENCES 60
APPENDIX A - INTEGRATION WITH INTERNET GROUP MULTICASTING 61
APPENDIX B - IMPLEMENTATION CONSIDERATIONS 62
NetBIOS Working Group [Page 2]
RFC 1001 March 1987
TABLE OF CONTENTS
1. STATUS OF THIS MEMO 6
2. ACKNOWLEDGEMENTS 6
3. INTRODUCTION 7
4. DESIGN PRINCIPLES 8
4.1 PRESERVE NetBIOS SERVICES 8
4.2 USE EXISTING STANDARDS 8
4.3 MINIMIZE OPTIONS 8
4.4 TOLERATE ERRORS AND DISRUPTIONS 8
4.5 DO NOT REQUIRE CENTRAL MANAGEMENT 9
4.6 ALLOW INTERNET OPERATION 9
4.7 MINIMIZE BROADCAST ACTIVITY 9
4.8 PERMIT IMPLEMENTATION ON EXISTING SYSTEMS 9
4.9 REQUIRE ONLY THE MINIMUM NECESSARY TO OPERATE 9
4.10 MAXIMIZE EFFICIENCY 10
4.11 MINIMIZE NEW INVENTIONS 10
5. OVERVIEW OF NetBIOS 10
5.1 INTERFACE TO APPLICATION PROGRAMS 10
5.2 NAME SERVICE 11
5.3 SESSION SERVICE 12
5.4 DATAGRAM SERVICE 13
5.5 MISCELLANEOUS FUNCTIONS 14
5.6 NON-STANDARD EXTENSIONS 15
6. NetBIOS FACILITIES SUPPORTED BY THIS STANDARD 15
7. REQUIRED SUPPORTING SERVICE INTERFACES AND DEFINITIONS 15
8. RELATED PROTOCOLS AND SERVICES 16
9. NetBIOS SCOPE 16
10. NetBIOS END-NODES 16
10.1 BROADCAST (B) NODES 16
10.2 POINT-TO-POINT (P) NODES 16
10.3 MIXED MODE (M) NODES 16
11. NetBIOS SUPPORT SERVERS 18
11.1 NetBIOS NAME SERVER (NBNS) NODES 18
11.1.1 RELATIONSHIP OF THE NBNS TO THE DOMAIN NAME SYSTEM 19
11.2 NetBIOS DATAGRAM DISTRIBUTION SERVER (NBDD) NODES 19
11.3 RELATIONSHIP OF NBNS AND NBDD NODES 20
11.4 RELATIONSHIP OF NetBIOS SUPPORT SERVERS AND B NODES 20
12. TOPOLOGIES 20
12.1 LOCAL 20
NetBIOS Working Group [Page 3]
RFC 1001 March 1987
12.1.1 B NODES ONLY 21
12.1.2 P NODES ONLY 21
12.1.3 MIXED B AND P NODES 21
12.2 INTERNET 22
12.2.1 P NODES ONLY 22
12.2.2 MIXED M AND P NODES 23
13. GENERAL METHODS 23
13.1 REQUEST/RESPONSE INTERACTION STYLE 23
13.1.1 RETRANSMISSION OF REQUESTS 24
13.1.2 REQUESTS WITHOUT RESPONSES: DEMANDS 24
13.2 TRANSACTIONS 25
13.2.1 TRANSACTION ID 25
13.3 TCP AND UDP FOUNDATIONS 25
14. REPRESENTATION OF NETBIOS NAMES 25
14.1 FIRST LEVEL ENCODING 26
14.2 SECOND LEVEL ENCODING 27
15. NetBIOS NAME SERVICE 27
15.1 OVERVIEW OF NetBIOS NAME SERVICE 27
15.1.1 NAME REGISTRATION (CLAIM) 27
15.1.2 NAME QUERY (DISCOVERY) 28
15.1.3 NAME RELEASE 28
15.1.3.1 EXPLICIT RELEASE 28
15.1.3.2 NAME LIFETIME AND REFRESH 29
15.1.3.3 NAME CHALLENGE 29
15.1.3.4 GROUP NAME FADE-OUT 29
15.1.3.5 NAME CONFLICT 30
15.1.4 ADAPTER STATUS 31
15.1.5 END-NODE NBNS INTERACTION 31
15.1.5.1 UDP, TCP, AND TRUNCATION 31
15.1.5.2 NBNS WACK 32
15.1.5.3 NBNS REDIRECTION 32
15.1.6 SECURED VERSUS NON-SECURED NBNS 32
15.1.7 CONSISTENCY OF THE NBNS DATA BASE 32
15.1.8 NAME CACHING 34
15.2 NAME REGISTRATION TRANSACTIONS 34
15.2.1 NAME REGISTRATION BY B NODES 34
15.2.2 NAME REGISTRATION BY P NODES 35
15.2.2.1 NEW NAME, OR NEW GROUP MEMBER 35
15.2.2.2 EXISTING NAME AND OWNER IS STILL ACTIVE 36
15.2.2.3 EXISTING NAME AND OWNER IS INACTIVE 37
15.2.3 NAME REGISTRATION BY M NODES 38
15.3 NAME QUERY TRANSACTIONS 39
15.3.1 QUERY BY B NODES 39
15.3.2 QUERY BY P NODES 40
15.3.3 QUERY BY M NODES 43
15.3.4 ACQUIRE GROUP MEMBERSHIP LIST 43
15.4 NAME RELEASE TRANSACTIONS 44
15.4.1 RELEASE BY B NODES 44
NetBIOS Working Group [Page 4]
RFC 1001 March 1987
15.4.2 RELEASE BY P NODES 44
15.4.3 RELEASE BY M NODES 44
15.5 NAME MAINTENANCE TRANSACTIONS 45
15.5.1 NAME REFRESH 45
15.5.2 NAME CHALLENGE 46
15.5.3 CLEAR NAME CONFLICT 47
15.6 ADAPTER STATUS TRANSACTIONS 47
16. NetBIOS SESSION SERVICE 48
16.1 OVERVIEW OF NetBIOS SESSION SERVICE 49
16.1.1 SESSION ESTABLISHMENT PHASE OVERVIEW 49
16.1.1.1 RETRYING AFTER BEING RETARGETTED 50
16.1.1.2 SESSION ESTABLISHMENT TO A GROUP NAME 51
16.1.2 STEADY STATE PHASE OVERVIEW 51
16.1.3 SESSION TERMINATION PHASE OVERVIEW 51
16.2 SESSION ESTABLISHMENT PHASE 52
16.3 SESSION DATA TRANSFER PHASE 54
16.3.1 DATA ENCAPSULATION 54
16.3.2 SESSION KEEP-ALIVES 54
17. NETBIOS DATAGRAM SERVICE 55
17.1 OVERVIEW OF NetBIOS DATAGRAM SERVICE 55
17.1.1 UNICAST, MULTICAST, AND BROADCAST 55
17.1.2 FRAGMENTATION OF NetBIOS DATAGRAMS 55
17.2 NetBIOS DATAGRAMS BY B NODES 57
17.3 NetBIOS DATAGRAMS BY P AND M NODES 58
18. NODE CONFIGURATION PARAMETERS 58
19. MINIMAL CONFORMANCE 59
REFERENCES 60
APPENDIX A 61
INTEGRATION WITH INTERNET GROUP MULTICASTING 61
A-1. ADDITIONAL PROTOCOL REQUIRED IN B AND M NODES 61
A-2. CONSTRAINTS 61
APPENDIX B 62
IMPLEMENTATION CONSIDERATIONS 62
B-1. IMPLEMENTATION MODELS 62
B-1.1 MODEL INDEPENDENT CONSIDERATIONS 63
B-1.2 SERVICE OPERATION FOR EACH MODEL 63
B-2. CASUAL AND RESTRICTED NetBIOS APPLICATIONS 64
B-3. TCP VERSUS SESSION KEEP-ALIVES 66
B-4. RETARGET ALGORITHMS 67
B-5. NBDD SERVICE 68
B-6. APPLICATION CONSIDERATIONS 68
B-6.1 USE OF NetBIOS DATAGRAMS 68
NetBIOS Working Group [Page 5]
RFC 1001 March 1987
PROTOCOL STANDARD FOR A NetBIOS SERVICE
ON A TCP/UDP TRANSPORT:
CONCEPTS AND METHODS
1. STATUS OF THIS MEMO
This RFC specifies a proposed standard for the Internet
community. Since this topic is new to the Internet community,
discussions and suggestions are specifically requested.
Please send written comments to:
Karl Auerbach
Epilogue Technology Corporation
P.O. Box 5432
Redwood City, CA 94063
Please send online comments to:
Avnish Aggarwal
Internet: mtxinu!excelan!avnish@ucbvax.berkeley.edu
Usenet: ucbvax!mtxinu!excelan!avnish
Distribution of this document is unlimited.
2. ACKNOWLEDGEMENTS
This RFC has been developed under the auspices of the Internet
Activities Board, especially the End-to-End Services Task Force.
The following individuals have contributed to the development of
this RFC:
Avnish Aggarwal Arvind Agrawal Lorenzo Aguilar
Geoffrey Arnold Karl Auerbach K. Ramesh Babu
Keith Ball Amatzia Ben-Artzi Vint Cerf
Richard Cherry David Crocker Steve Deering
Greg Ennis Steve Holmgren Jay Israel
David Kaufman Lee LaBarre James Lau
Dan Lynch Gaylord Miyata David Stevens
Steve Thomas Ishan Wu
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