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-
- Network Working Group T J Dimitri
- Internet Draft Microsoft
- expires in six months Sept 1993
-
-
- The PPP NetBIOS Frames Control Protocol (NBFCP)
-
-
-
- Status of this Memo
-
- This document is the product of the Point-to-Point Protocol Working
- Group of the Internet Engineering Task Force (IETF). Comments should
- be submitted to the ietf-ppp@ucdavis.edu mailing list.
-
- Distribution of this memo is unlimited.
-
- This document is an Internet Draft. Internet Drafts are working
- documents of the Internet Engineering Task Force (IETF), its Areas,
- and its Working Groups. Note that other groups may also distribute
- working documents as Internet Drafts.
-
- Internet Drafts are draft documents valid for a maximum of six
- months. Internet Drafts may be updated, replaced, or obsoleted by
- other documents at any time. It is not appropriate to use Internet
- Drafts as reference material or to cite them other than as a
- ``working draft'' or ``work in progress.''
-
- Please check the 1id-abstracts.txt listing contained in the
- internet-drafts Shadow Directories on nic.ddn.mil, nnsc.nsf.net,
- nic.nordu.net, ftp.nisc.sri.com, or munnari.oz.au to learn the
- current status of any Internet Draft.
-
- Abstract
-
- The Point-to-Point Protocol (PPP) [1] provides a method for
- transmitting multi-protocol datagrams over point-to-point links. PPP
- defines an extensible Link Control Protocol, and proposes a family of
- Network Control Protocols for establishing and configuring different
- network-layer protocols.
-
- The NBF protocol was originally called the NetBEUI protocol and
- was used in versions of DOS and OS/2 LAN Manager. It is now used
- in Microsoft Windows NT and Microsoft Windows for Workgroups. This
- document defines the Network Control Protocol for establishing and
- configuring the NBF protocol over PPP.
-
-
-
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-
- 1. Introduction
-
- PPP has three main components:
-
- 1. A method for encapsulating multi-protocol datagrams.
-
- 2. A Link Control Protocol (LCP) for establishing, configuring,
- and testing the data-link connection.
-
- 3. A family of Network Control Protocols for establishing and
- configuring different network-layer protocols.
-
- In order to establish communications over a point-to-point link, each
- end of the PPP link must first send LCP packets to configure and test
- the data link. After the link has been established and optional
- facilities have been negotiated as needed by the LCP, PPP must send
- NBFCP packets to choose and configure the NBF network-layer protocol.
- Once NBFCP has reached the Opened state, NBF datagrams can be sent
- over the link.
-
- The link will remain configured for communications until explicit LCP
- or NBFCP packets close the link down, or until some external event
- occurs (an inactivity timer expires or network administrator
- intervention).
-
-
- 1.1. Specification of Requirements
-
- In this document, several words are used to signify the requirements
- of the specification. These words are often capitalized.
-
- MUST This word, or the adjective "required", means that the
- definition is an absolute requirement of the specification.
-
- MUST NOT This phrase means that the definition is an absolute
- prohibition of the specification.
-
- SHOULD This word, or the adjective "recommended", means that there
- may exist valid reasons in particular circumstances to
- ignore this item, but the full implications should be
- understood and carefully weighed before choosing a
- different course.
-
- MAY This word, or the adjective "optional", means that this
- item is one of an allowed set of alternatives. An
- implementation which does not include this option MUST be
- prepared to interoperate with another implementation which
- does include the option.
-
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- 1.2. Terminology
-
- This document frequently uses the following terms:
-
- peer The other end of the point-to-point link.
-
- silently discard
- This means the implementation discards the packet without
- further processing. The implementation SHOULD provide the
- capability of logging the error, including the contents of
- the silently discarded packet, and SHOULD record the event
- in a statistics counter.
-
- end-system A user's machine. It only sends packets to servers and
- other end-systems. It doesn't pass any packets through
- itself.
-
- router Allows packets to pass through, usually from one ethernet
- segment to another. Sometimes these are called
- "intermediate-systems".
-
- bridge Allows packets to pass through with the data field
- unmodified. Usually from one ethernet segment to another
- or from one ethernet segment to a token-ring segment.
-
- gateway Allows packets to be sent from one network protocol to
- the same or different network protocol. For example,
- NetBIOS packets from an NBF network to a TCP/IP network
- which has implemented RFC 1001 and RFC 1002.
-
-
- 2. A PPP Network Control Protocol for NBF
-
- The NBF Control Protocol (NBFCP) is responsible for configuring,
- enabling, and disabling the NBF protocol modules on both ends of the
- point-to-point link. NBFCP uses the same packet exchange mechanism
- as the Link Control Protocol. NBFCP packets may not be exchanged
- until PPP has reached the Network-Layer Protocol phase. NBFCP
- packets received before this phase is reached should be silently
- discarded.
-
- The NBF Control Protocol is exactly the same as the Link Control
- Protocol [1] with the following exceptions:
-
- Frame Modifications
-
- The packet may utilize any modifications to the basic frame format
- which have been negotiated during the Link Establishment phase.
-
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-
- Data Link Layer Protocol Field
-
- Exactly one NBFCP packet is encapsulated in the Information field
- of a PPP Data Link Layer frame where the Protocol field indicates
- type hex 80D5 (NBF Control Protocol).
-
- Code field
-
- Only Codes 1 through 7 (Configure-Request, Configure-Ack,
- Configure-Nak, Configure-Reject, Terminate-Request, Terminate-Ack
- and Code-Reject) are used. Other Codes should be treated as
- unrecognized and should result in Code-Rejects.
-
- Timeouts
-
- NBFCP packets may not be exchanged until PPP has reached the
- Network-Layer Protocol phase. An implementation should be
- prepared to wait for Authentication and Link Quality Determination
- to finish before timing out waiting for a Configure-Ack or other
- response. It is suggested that an implementation give up only
- after user intervention or a configurable amount of time.
-
- Configuration Option Types
-
- NBFCP has a distinct set of Configuration Options.
-
-
-
- 2.1. Sending NBF Datagrams
-
- Before any NBF packets may be communicated, PPP must reach the
- Network-Layer Protocol phase, and the NBF Control Protocol must reach
- the Opened state.
-
- Unlesss otherwise negotiated, exactly one NBF packet is encapsulated
- in the Information field of a PPP Data Link Layer frame where the
- Protocol field indicates type hex 80D5 (NBF datagram).
-
- An encapsulated NBF packet for PPP differs from the data field in
- DIX ethernet (RFC 894) because NBF packets do not contain the source,
- destination, or length fields in the datagram packet. Therefore,
- the encapsulated NBF packet contains two extra octets in the
- beginning of the PPP Information field. The most significant bit in
- the first octet indicates whether the frame is directed or multicast.
- The next 15 bits indicate the length of the rest of the NBF packet in
- the Information field.
-
-
-
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- A summary of the NBF default encapsulation format is shown below.
- The fields are transmitted from left to right.
-
- 0 1 2 3
- 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- |x| Length | Data ...
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-
- x
-
- The x field is one bit and indentifies the type of NBF
- packet. The two values for this field are assigned as follows:
-
- 0 NBF directed packet.
- 1 NBF multicast packet (IEEE 6 octet addesss 03-00-00-00-00-01).
-
- Length
-
- The Length field is 15 bits and indicates the length of
- the Data field (excluding the two octets in the x and Length
- fields). The Length field is encoded in big-endian format.
- Octets outside the range of the Length field should be treated as
- Data Link Layer padding and should be ignored upon reception.
- When a packet is received with an invalid Length field, the packet
- is silently discarded.
-
- Data
-
- The Data field is zero or more octets as indicated by the Length
- field.
-
-
- The maximum length of an NBF datagram transmitted over a PPP link is
- the same as the maximum length of the Information field of a PPP data
- link layer frame. Since there is no standard method for fragmenting
- and reassembling NBF datagrams, PPP links supporting NBF MUST allow
- at least 578 (576 + 2 for length and type) octets in the information
- field of a data link layer frame. It is recommended that an
- implementation allow 1502 (1500 + 2) octets in the information field.
-
-
- 3. NBFCP Configuration Options
-
- NBFCP Configuration Options allow modifications to the standard
- characteristics of the network-layer protocol to be negotiated. If a
- Configuration Option is not included in a Configure-Request packet,
- the default value for that Configuration Option is assumed.
-
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- NBFCP uses the same Configuration Option format defined for LCP [1],
- with a separate set of Options.
-
- Up-to-date values of the NBFCP Option Type field are specified in the
- most recent "Assigned Numbers" RFC [2]. Current values are assigned
- as follows:
-
- 1 Name-Projection
- 2 Server-Information
- 3 Auto-Disconnect-Time
- 4 Multicast-Filtering
- 5 Configuration-Complete
-
-
- 3.1. Name-Projection
-
- Description
-
- This Configuration Option provides a way to for a NetBIOS
- gateway or bridge to learn the peer's NetBIOS names, attempt to
- add all the NetBIOS names on the remote network, and report which
- NetBIOS names, if any, could not be added to the remote network.
-
- The sender of the Name-Projection Request packet states which
- NetBIOS names are to be added. If this packet is recieved, the
- peer MUST respond with a Configure-Ack, Configure-Nak, or
- Configure-Reject packet.
-
- Non NetBIOS Gateway implementations which do not care about
- the peer's NetBIOS names MUST Configure-Reject all Name-Projection
- Requests.
-
- NetBIOS Gateway implementations MUST respond with Configure-Ack
- if one or more names were added and MUST respond with
- Configure-Nak if no NetBIOS names could be added. The
- Configure-Ack packet MUST contain the list of any NetBIOS names
- which could not be added and a one octet Result field describing
- the reason why the name could not be added. The Configure-Nak
- packet MUST contain the list of all NetBIOS names send in the
- Request packet as well as the reason why each of them could not
- be added.
-
- If the Configure-Ack packet is received then the peer MAY decide
- to fail configuration depending on which NetBIOS names could not
- be added.
-
- If the Configure-Nak packet is received then the peer MUST fail
- configuration.
-
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- If the Configure-Reject packet is received then the peer MAY
- decide to fail configuration.
-
-
- A summary of the Name-Projection Configuration Option format is
- shown below. The fields are transmitted from left to right.
-
- 0 1 2 3
- 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | Type | Length | 1st NetBIOS-Name
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | 1st NetBIOS-Name (cont.)
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | 1st NetBIOS-Name (cont.)
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | 1st NetBIOS-Name (cont.)
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | 1st NetBIOS-Name (cont.) | Added |2nd NetBIOS Name...
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-
-
- Type
-
- 1
-
- Length
-
- 2 + (Number of NetBIOS names * 17)
-
- NetBIOS-Names
-
- This group of zero or more sixteen octet NetBIOS-Name fields
- contains a list of all the NetBIOS names the peer wishes to add to
- the remote network if the packet is Configure-Request. If the
- packet is Configure-Reject, the peer does not support this
- configuration option and it can be assumed that no NetBIOS names
- were added.
-
- Because the length field is only one octet only 14 NetBIOS names
- can be added per Configure-Request packet. If more than 14
- NetBIOS names should be added, more than one Name-Projection
- Request packet will have to be sent.
-
-
-
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- Added
-
- This is a one octet field which plays a dual role. The Added
- field in the Name-Projection Request packet contains the type of
- NetBIOS name added. A summary of name types is listed below.
-
- 01 Unique Name.
- 02 Group Name.
-
- If the packet is NOT a Configure-Request the Added field contains
- the NetBIOS return code for the NetBIOS Add Name or NetBIOS Add
- Group Name command as defined in the NetBIOS 3.0 specification
- [3]. A summary of common result codes is listed below in type
- hex.
-
- 0D Duplicate name in local name table.
- 0E Name table full.
- 15 Name not found or cannot specify "*" or null.
- 16 Name in use on remote NetBIOS.
- 19 Name conflict detected.
- 30 Name defined by another environment.
- 35 Required system resources exhausted.
-
- 3.2. Server-Information
-
- Description
-
- This Configuration Option provides a way to obtain information
- about the communications server providing the remote side of the
- PPP connection.
-
- The nature of this option is advisory only. It is provided as a
- means of improving an end system's ability to provide information
- to the peer about the remote side of the PPP connection for
- User Interface or Logging purposes.
-
-
-
-
-
-
-
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-
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- A summary of the Server-Information Option format is shown
- below. The fields are transmitted from left to right.
-
- 0 1 2 3
- 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | Type | Length | Server-class |
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | Server-version (major) | Server-version (minor) |
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | Server-name
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | Server-name (cont.)
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | Server-name (cont.)
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | Server-name (cont.) |
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-
-
- Type
-
- 2
-
- Length
-
- >=6
-
- Server-class
-
- The server-class field is two octets and indicates the class of
- the communication server providing the remote end of the PPP
- connection. This two octet quantity represents a 16 bit unsigned
- number sent in big-endian fashion (most significant octet first).
-
-
-
-
-
-
-
-
-
-
-
-
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- Initial values are assigned as follows:
-
- Value Class
-
- 1 Microsoft PPP NetBIOS Gateway Dial-In Server.
-
- 2 Generic PPP NetBIOS Gateway Dial-In Server.
-
- 3 Microsoft PPP Local Access Only Server.
-
- 4 Generic PPP Local Access Only Server.
-
- 5 Reserved.
-
- 6 Generic PPP NBF bridge.
-
- Server-version
-
- The Server-version field is four octets and indicates the version
- of the communication server providing the remote end of the PPP
- connection. The first two octets are the major version number
- and the last two octets are the minor version number. The major
- and minor version represent a 16 bit unsigned number sent in
- big-endian fashion (most significant octet first).
-
- Server-name
-
- The 16-octet NetBIOS name of the server. If the length field
- is 6, no server name is provided.
-
- 3.3. Auto-Disconnect-Timeout
-
- Description
-
- This Configuration Option provides a way to negotiate the use of
- an auto disconnect timeout. It allows the sender of the
- Configure-Request to state which value for the
- Auto-Disconnect-Timeout is desired, or to request that the peer
- provide the information. The peer can provide this information
- by NAKing the option, and returning a valid
- Auto-Disconnect-Timeout.
-
- If negotiation about the remote Auto-Disconnect-Timeout is
- required, and the peer did not provide the option in its
- Configure-Request, the option SHOULD be appended to a
- Configure-Nak.
-
-
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- By default, the peer is pre-configured to an administrator
- assigned Auto-Disconnect-Timeout. A timeout value specified
- as zero in a Configure-Request shall be interpreted as requesting
- the remote end to specify a value via Configure-Nak. A timeout
- value specified as zero in Configure-Nak shall be interpreted
- as agreement that no value exists.
-
- An implementation which cannot change its Auto-Disconnect-Timeout
- MUST Configure-Nak all Auto-Disconnect-Timeout Requests and
- return the Auto-Disconnect-Timeout value in the Configure-Nak
- packet.
-
- An implementation which does not have an Auto-Disconnect-Timeout
- MUST Configure-Reject all Auto-Disconnect-Timeout Requests.
-
- An implementation which requires the Requested
- Auto-Disconnect-Timeout SHOULD fail configuration if the remote
- side Configure-Rejects all Auto-Disconnect-Timeout requests, or
- fails to provide the requested value.
-
- Peers that do not establish NetBIOS sessions (for instance, peers
- that transmit only multicast packets) SHOULD request an
- Auto-Disconnect-Timeout of type hex FFFF so that there is no
- Auto-Disconnect-Timeout.
-
- Peers that configure multiple network layers SHOULD ignore
- any Auto-Disconnect-Timeout since the timeout only pertains
- to the NBF network layer, even if it is configured.
-
-
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- A summary of the Auto-Disconnect-Time Configuration Option format is
- shown below. The fields are transmitted from left to right.
-
- 0 1 2 3
- 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | Type | Length | Timeout |
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-
-
- Type
-
- 3
-
- Length
-
- 4
-
- Timeout
-
- The Timeout field is two octets and indicates the idle timeout
- time in seconds for the link. If no NetBIOS session traffic
- occurs for the duration of the timeout period specified, the link
- will be dropped. The minimum value for this field is 60 (one
- minute). A value of zero indicates that no timeout exists or that
- the timeout is unknown. A value of hex type FFFF indicates that
- the timeout is infinite. This two octet quantity represents
- a 16 bit unsigned number sent in big-endian fashion (most
- significant octet first).
-
-
-
- 3.4. Multicast-Filtering
-
- Description
-
- This Configuration Option provides a way to negotiate the use of
- the Multicast-Forward-Rate and the Multicast-Priority. This
- Configuration Option provides a way to negotiate how to handle
- mulicast packets. It allows the sender of the Configure-Request
- to state the desired handling of multicast packets, or to request
- that the peer provide the information. The peer can provide this
- information by NAKing the option, and returning a valid
- Multicast-Paramters.
-
- If negotiation about the remote Multicast-Filtering is required,
- and the peer did not provide the option in its Configure-Request,
- the option SHOULD be appended to a Configure-Nak.
-
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- By default, the peer is pre-configured to an administrator
- assigned Multicast-Rate. A Multicast-Filtering value specified
- as hex type FFFF in a Configure-Request shall be interpreted as
- requesting the remote end to specify a value via Configure-Nak.
- A Multicast-Forward-Rate value specified as hex type FFFF in
- Configure-Nak shall be interpreted as agreement that no vlaue
- exists. A Multicast-Forward-Rate of zero shall indicate that
- all multicast packets SHOULD be forwarded.
-
- An implementation which cannot change its Multicast-Filtering
- MUST Configure-Reject all Multicast-Parameters Requests.
-
- An implementation which requires the Requested Multi-Filtering
- option SHOULD fail configuration if the remote side
- Configure-Rejects all Multicast-Filtering requests, or fails to
- provide the requested value.
-
- Peers that rely on all multicast packets forwarded SHOULD
- request a Multicast-Forward-Rate of zero and a Multicast-Priority
- of one.
-
-
- A summary of the Multicast-Filtering Configuration Option format is
- shown below. The fields are transmitted from left to right.
-
- 0 1 2 3
- 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | Type | Length | Multicast-Forward-Rate |
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | Multicast-Priority |
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-
-
- Type
-
- 4
-
- Length
-
- 6
-
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- Multicast-Forward-Rate
-
- The Multicast-Forward-Rate field is two octets and indicates
- the maximum rate in seconds at which multicast packets can be
- sent. The maximum value for this field is 60 (one minute).
- A value of zero indicates that there is no maximum rate at
- which multicast packets can be sent. A value of hex type FFFF
- indicates that the Multicast-Forward-Rate is unknown. This two
- octet quantity represents a 16 bit unsigned number sent in
- big-endian fashion (most significant octet first).
-
-
- Multicast-Priority
-
- The Multicast-Priority field is two octets and indicates if
- multicast packets have priority over other packets when being
- sent. A value of 0 indicates that directed packets have
- priority. A value of 1 indicates that multicast packets have
- priority.
-
-
- 3.6. Configuration-Complete
-
- Description
-
- This Configuration Option provides a way to indicate that all
- implementation-dependent Desired Parameters are satisfied. It is
- provided as a means of detecting when convergence will occur in a
- heterogeneous environment.
-
- This option SHOULD be included in a Configure-Request when the
- combination of statically configured parameters and offered
- Configuration Options will result in successful configuration.
-
- The nature of this option is advisory only. This option MUST NOT
- be included in a Configure-Nak.
-
-
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- A summary of the Configuration-Complete Option format is shown
- below. The fields are transmitted from left to right.
-
- 0 1
- 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | Type | Length |
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-
-
- Type
-
- 5
-
- Length
-
- 2
-
-
-
-
- Security Considerations
-
- Security issues are not discussed in this memo.
-
-
- References
-
- [1] Simpson, W. A., "The Point-to-Point Protocol (PPP)", RFC 1331,
- May 1992.
-
- [2] Reynolds, J.K., Postel, J.B., "Assigned Numbers", RFC 1340,
- July 1992.
-
- [3] IBM Corp., "IBM Local Area Network Technical Reference",
- Third Edition, November 1988.
-
- Acknowledgments
-
- Some of the text in this document is taken from previous documents
- produced by the Point-to-Point Protocol Working Group of the Internet
- Engineering Task Force (IETF).
-
- This document is derivative of drafts written by the following
- people. Many thanks for their work, and for taking an initial stab
- at the protocol:
-
- TBA.
-
-
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- Chair's Address
-
- The working group can be contacted via the current chair:
-
- Fred Baker
- Advanced Computer Communications
- 315 Bollay Drive
- Santa Barbara, California, 93111
-
- EMail: fbaker@acc.com
-
-
- Author's Address
-
- Questions about this memo can also be directed to:
-
- Thomas J. Dimitri
- Microsoft Corporation
- 1 Microsoft Way
- Redmond, WA 98052
-
- EMail: tommyd@microsoft.com
-
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- Table of Contents
-
-
- 1. Introduction .......................................... 1
- 1.1 Specification of Requirements ................... 1
- 1.2 Terminology ..................................... 2
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- 2. A PPP Network Control Protocol for NBF ................ 2
- 2.1 Sending NBF Datagrams ........................... 3
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- 3. NBFCP Configuration Options ........................... 4
- 3.1 Name-Projection.................................. 5
- 3.2 Server-Information............................... 7
- 3.3 Auto-Disconnect-Time............................. 9
- 3.4 Multicast-Filtering.............................. 11
- 3.5 Configuration-Complete........................... 13
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- SECURITY CONSIDERATIONS ...................................... 14
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- REFERENCES ................................................... 14
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- ACKNOWLEDGEMENTS ............................................. 14
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- CHAIR'S ADDRESS .............................................. 15
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- AUTHOR'S ADDRESS ............................................. 15
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