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Versions: 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 RFC 4446

Network Working Group                                       Luca Martini
Internet Draft                              Level 3 Communications, LLC.
Expiration Date: December 2003

                                                        W. Mark Townsley
                                                           Cisco Systems




                                                               June 2003


     IANA Allocations for pseudo Wire Edge to Edge Emulation (PWE3)


                 draft-ietf-pwe3-iana-allocation-01.txt

Status of this Memo

   This document is an Internet-Draft and is in full conformance with
   all provisions of Section 10 of RFC2026.

   Internet-Drafts are working documents of the Internet Engineering
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Abstract

   The Control and maintenance protocol for providing various Layer 1
   and Layer 2 services over a Packet Switched Network has been
   described in [1]. This document pre-allocates the fixed Pseudo-wire
   identifier , and other fixed protocol values that are to be assigned
   by IANA using the "IETF Consensus" policy defined in RFC2434






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Table of Contents

    1      Specification of Requirements  ..........................   2
    2      PW type  ................................................   2
    3      Interface Parameters field  .............................   3
    4      LDP Status codes  .......................................   3
    5      Pseudo Wire Status  .....................................   4
    6      Security Considerations  ................................   4
    7      Intellectual Property Disclaimer  .......................   4
    8      References  .............................................   4
    9      Author Information  .....................................   5





1. Specification of Requirements

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119


2. PW type

   As specified in [1], a Virtual Circuit FEC element contains the PW
   Type field. PW Type value 0 is reserved. PW Type values 1 through 16
   are defined in this document. PW Type values 17 through 63 are to be
   assigned by IANA using the "IETF Consensus" policy defined in
   RFC2434. PW Type values 64 through 127 are to be assigned by IANA,
   using the "First Come First Served" policy defined in RFC2434. VC
   Type values 128 through 32767 are vendor-specific, and values in this
   range are not to be assigned by IANA.

   The PW Type is 15 bit quantity containing a value which represents
   the type of PW. Assigned Values are:

           PW type  Description

           0x0001   Frame Relay DLCI
           0x0002   ATM AAL5 SDU VCC transport
           0x0003   ATM transparent cell transport
           0x0004   Ethernet Tagged Mode
           0x0005   Ethernet
           0x0006   HDLC
           0x0007   PPP



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           0x0008   SONET/SDH Circuit Emulation Service Over MPLS (CEM) [8]
           0x0009   ATM n-to-one VCC cell transport
           0x000A   ATM n-to-one VPC cell transport
           0x000B   IP Layer2 Transport
           0x000C   ATM one-to-one VCC Cell Mode
           0x000D   ATM one-to-one VPC Cell Mode
           0x000E   ATM AAL5 PDU VCC transport
           0x000F   Frame-Relay Port mode
           0x0010   SONET/SDH Circuit Emulation over Packet (CEP)



3. Interface Parameters field

   As specified in [1], a PW FEC element contains the Interface
   Parameters field, which is a list of one or more parameters, and each
   parameter is identified by the Parameter ID field. Parameter ID value
   0 is reserved.  Parameter ID values 1 through 9 are defined in this
   document. Parameter ID values 10 through 63 are to be assigned by
   IANA using the "IETF Consensus" policy defined in RFC2434. Parameter
   ID values 64 through 127 are to be assigned by IANA, using the "First
   Come First Served" policy defined in RFC2434. Parameter ID values 128
   through 255 are vendor- specific, and values in this range are not to
   be assigned by IANA.

   The interface parameter ID is assigned as follows:
   Parameter   ID Length    Description

       0x01         4       Interface MTU in octets.
       0x02         4       Maximum Number of concatenated ATM cells.
       0x03   up to 82      Optional Interface Description string.
       0x04         4       CEP [8] Payload Bytes.
       0x05         2       CEP options.
       0x06         2       Requested VLAN ID
       0x07         4       CEP/TDM bit-rate
       0x08         2       Frame-Relay DLCI Length
       0x06         2       Fragmentation indicator


4. LDP Status codes

   RFC 3036 has a range of LDP Status Code values which are assigned by
   IANA through an IETF Consensus action. These are in the range
   0x00000000-0x1fffffff. To meet the protocol requirements of [1], the
   following new status codes are defined:

           0x00000024 "Illegal C-Bit"
           0x00000025 "Wrong C-Bit"



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           0x00000026 "Incompatible bit-rate"


5. Pseudo Wire Status"

   As specified in [1], a new PW status TLV contains a 32 bit field, PW
   status value 0 is reserved to clear all failures. PW Status Bits 0
   through 4 are defined in this document. PW Status Bits 6 through 15
   are to be assigned by IANA using the "IETF Consensus" policy defined
   in RFC2434. PW Status Bits 16 through 23 are to be assigned by IANA,
   using the "First Come First Served" policy defined in RFC2434. PW
   Status Bits 24 through 31 are vendor-specific, and values in this
   range are not to be assigned by IANA.

   PW status is a 4 octet bit field as follows:

           0x00000000 - Pseudo Wire forwarding ( clear all failures )
           0x00000001 - Pseudo Wire Not Forwarding
           0x00000002 - Local Customer-facing PW ( ingress ) Receive Fault
           0x00000004 - Local Customer-facing PW ( egress ) Transmit Fault
           0x00000008 - Local PSN-facing PW ( ingress ) Receive Fault
           0x00000010 - Local PSN-facing PW ( egress ) Transmit Fault


6. Security Considerations

   This document specifies only fixed identifiers, and not the protocols
   used to carry the encapsulated packets across the network.  Each such
   protocol may have its own set of security issues, but those issues
   are not affected by the identifiers specified herein.


7. Intellectual Property Disclaimer

   This document is being submitted for use in IETF standards
   discussions.


8. References

   [1] "Transport of Layer 2 Frames Over MPLS", draft-ietf-pwe3-
   control-protocol-03.txt. ( work in progress )









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9. Author Information


   Luca Martini
   Level 3 Communications, LLC.
   1025 Eldorado Blvd.
   Broomfield, CO, 80021
   e-mail: luca@level3.net


   W. Mark Townsley
   Cisco Systems
   7025 Kit Creek Road
   PO Box 14987
   Research Triangle Park, NC 27709
   e-mail: mark@townsley.net



































Martini & Townsley                                              [Page 5]


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