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Versions: 00 01 02 03 04 05 06 07 08 09 10 RFC 6003

    Network Working Group                               D. Papadimitriou
    Internet Draft                                        Alcatel-Lucent
    Updates: 3471, 3473                                 January 20, 2010
    Intended status: Standards Track
    Expires: July 19, 2010
    
    
    
                         Ethernet Traffic Parameters
    
              draft-ietf-ccamp-ethernet-traffic-parameters-10.txt
    
    
    
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    Abstract
    
    
       This document describes the support of Metro Ethernet Forum (MEF)
       Ethernet Traffic Parameters as described in MEF10.1 when using
       Generalized Multi-Protocol Label Switching (GMPLS) Resource
       ReSerVation Protocol - Traffic Engineering (RSVP-TE) signaling.
    
    1. Introduction
    
       Per [RFC3471], Generalized Multi-Protocol Label Switching (GMPLS)
       allows the inclusion of technology specific parameters in
       signaling. Ethernet SENDER_TSPEC and FLOWSPEC specific objects
       are introduced in this document that supports Metro Ethernet
       Forum (MEF) Ethernet traffic parameters as specified in [MEF10.1]
       and ITU-T Ethernet Service Switching as discussed in [GMPLS-
       ESVCS]. For example:
    
       o For Ethernet Private Line (EPL) services [MEF6], these traffic
         parameters are applicable to each Ethernet Virtual Connection
         (EVC) crossing a given port.
    
       o For Ethernet Virtual Private Line (EVPL) services [MEF6], these
         traffic parameters are applicable per Ethernet Virtual
         Connection (EVC) with single or multiple Class of Service
         (CoS), independent of its associated (set of) Virtual LAN ID
         (VID).
    
         Association between EVC and VIDs is detailed in [MEF10.1]. The
         format and encoding of the (set of) VIDs is documented in a
         companion document [GMPLS-ESVCS].
    
       This does not preclude broader usage of the Ethernet SENDER_TSPEC
       and FLOWSPEC specific objects specified this document. For
       instance, they may also be used for signaling Ethernet Label
       Switched Paths (LSP): in the Generalized Label Request (see
       [RFC3471]), the Switching Type field is set to Layer 2 Switching
       Capability (L2SC) and the LSP Encoding Type field to Ethernet.
    
    2. Conventions used in this document
    
       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 [RFC2119].
    
    
    
    
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       Moreover, the reader is assumed to be familiar with the
       terminology [MEF10.1] as well as [RFC3471] and [RFC3473].
    
    3. Overview
    
       In GMPLS RSVP-TE [RFC3473] the SENDER_TSPEC object is used on a
       Path message to indicate the bandwidth that is requested for the
       LSP being established, and the FLOWSPEC object is used on a Resv
       message to indicate the bandwidth actually reserved for the LSP.
       The Ethernet SENDER_TSPEC/FLOWSPEC object includes the Ethernet
       link type (switching granularity) of the requested LSP and the
       MTU value for the LSP. Other information about the requested
       bandwidth characteristics of the LSP are carried in the Bandwidth
       Profile as a TLV within the Ethernet SENDER_TSPEC/FLOWSPEC
       object.
    
       The Ethernet SENDER_TSPEC/FLOWSPEC object includes the Ethernet
       link type (switching granularity) of the requested LSP and the
       MTU value for the LSP.
    
       The Bandwidth Profile defines the set of traffic parameters
       applicable to a sequence of Service Frames, referred to as
       bandwidth profile parameters (as specified in [MEF10.1]):
    
       o Committed Rate: indicates the rate at which traffic commits to
         be sent to the Ethernet LSP. The Committed Rate is described in
         terms of the CIR (Committed Information Rate) and CBS
         (Committed Burst Size) traffic parameters.
    
         o CIR is defined as the average rate (in bytes per unit of
           time) up to which the network is committed to transfer frames
           and meets its performance objectives.
    
         o CBS defines a limit on the maximum number of information
           units (e.g., bytes) available for a burst of frames sent at
           the interface speed to remain CIR-conformant.
    
       o Excess Rate: indicates the extent by which the traffic sent on
         an Ethernet LSP exceeds the committed rate. The Excess Rate is
         described in terms of the EIR (Excess Information Rate) and EBS
         (Excess Burst Size) traffic parameters.
    
         o EIR is defined as the average rate (in bytes per unit of
           time), in excess of the CIR, up to which the network may
           transfer frames  without any performance objectives.
    
         o EBS defines a limit on the maximum number of information unit
    
    
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           (e.g., bytes) available for a burst of frames sent at the
           interface speed to remain EIR-conformant.
    
       o Color mode (CM): indicates whether the "color-aware" or "color-
         blind" property is employed by the bandwidth profile.
    
       o Coupling flag (CF): allows the choice between two modes of
         operation of the rate enforcement algorithm.
    
    4. Ethernet SENDER_TSPEC Object
    
       The Ethernet SENDER_TSPEC object (Class-Num = 12, Class-Type =
       TBA by IANA, with recommended value 6) has the following format:
    
        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
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |            Length             | Class-Num (12)|   C-Type (6)  |
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |     Switching Granularity     |              MTU              |
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |                                                               |
       ~                              TLVs                             ~
       |                                                               |
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    
       Switching Granularity (SG): 16 bits
    
          This field indicates the type of link that comprises the
          requested Ethernet LSP.
    
          The permitted Ethernet Link Type values are:
    
             Value   Switching Granularity
             -----   ---------------------
               0     Provided in signaling. See [GMPLS-ESVCS]
               1     Ethernet Port (for port-based service)
               2     Ethernet Frame (for EVC-based service)
             255     Reserved value
    
          Values 0 through 239, and 255 are assigned by IANA via IETF
          Standards Action. Value 255 is reserved by the
          present document.
    
          Values 240 through 254 are reserved for Private Use.
    
          Values 256 through 65535 are not to be assigned at this time.
    
    
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       MTU: 16 bits
    
          This is a two-octet value indicating the MTU in octets.
    
          The MTU field MUST NOT take a value smaller than 46 bytes for
          Ethernet V2 [ETHv2] and 38 bytes for IEEE 802.3 [IEEE802.3].
    
       TLV (Type-Length-Value):
    
          The Ethernet SENDER_TSPEC object MUST include at least one TLV
          and MAY include more than one TLV.
    
          Each TLV MUST have the following format:
    
        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            |
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |                                                               |
       ~                             Value                             ~
       |                                                               |
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    
          Type: 16 bits
    
             Defined values are:
    
             Type     Length   Format            Description
             ------------------------------------------------------
               0       TBD     Reserved          Reserved value
               1       TBD     Reserved          Reserved value
               2        24     see Section 3.1   Ethernet Bandwidth
                                                 Profile [MEF10.1]
               3         8     [GMPLS-ESVCS]     Layer 2 Control
                                                 Processing (L2CP)
             255       TBD     Reserved          Reserved value
    
             Values 0 through 239, and 255 are assigned by IANA via IETF
             Standards Action. Values 0 and 255 are reserved
             by the present document.
    
             Values 240 through 254 are reserved for Private Use.
    
             Values 256 through 65535 are not to be assigned at this
    
    
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             time.
    
           Length: 16 bits
    
             Indicates the length in bytes of the whole TLV including
             the Type and Length fields. A value field whose length is
             not a multiple of four MUST be zero-padded (with trailing
             zeros) so that the TLV is four-octet aligned.
    
    4.1. Ethernet Bandwidth Profile TLV
    
       The Type 2 TLV specifies the Ethernet Bandwidth Profile (BW
       profile). It defines an upper bound on the volume of the expected
       service frames belonging to a particular Ethernet service
       instance. The Ethernet SENDER_TSPEC object MAY include more than
       one Ethernet Bandwidth Profile TLV.
    
       The Type 2 TLV has the following format:
    
        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
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |    Profile    |     Index     |            Reserved           |
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |                              CIR                              |
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |                              CBS                              |
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |                              EIR                              |
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |                              EBS                              |
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    
       Profile: 8 bits (this field is to be registered by IANA)
    
          This field is defined as a bit vector of binary flags. The
          following flags are defined:
    
             Flag 1 (bit 0): coupling flag (CF)
             Flag 2 (bit 1): color mode (CM)
    
          Where bit 0 is the low order bit. Other flags are reserved,
          they SHOULD be set to zero when sent, and SHOULD be ignored
          when received.
    
          A flag is set to value 1 to indicate that the corresponding
          metering profile is requested.
    
    
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          The Flag 1 (CF) allows the choice between two modes of
          operation of the rate enforcement algorithm.
    
          The Flag 2 (CM) indicates whether the color-aware or color-
          blind property is employed by the bandwidth profile. When Flag
          2 is set to value 0 (1), the bandwidth profile algorithm is
          said to be in color blind (color aware) mode.
    
       Index: 8 bits
    
          The index field is used to reference bandwidth allocated for a
          given traffic class in case a multiple-class LSP is being
          requested. The index field value MUST correspond to at least
          one of the Class-Type values included either in the CLASSTYPE
          object [RFC4124] or in the EXTENDED_CLASSTYPE object [MCOS].
    
          A given index value j can be associated to at most N Class-
          Type values CTi (i =< N) of the EXTENDED_CLASSTYPE object.
          This applies in case a set of one or more CTi maps a single
          (shared) BW profile. An example of value setting consists then
          in assigning an arbitrary value comprised within the range
          [0x08,0xF8[ associated to a set of CTi, the values in the
          range [0xF8,0xFF] being selected for reserved sets. This
          allows mapping to one of 248 pre-defined CTi sets.
    
          A given index value j can be associated to a single CTi (1:1
          correspondence). In this case, the index value setting
          consists then in assigning the 3 LSB of the index field itself
          to the CTi value itself (comprised in the range [0x00,0x07]).
          This applies in case a single CTi maps a single (dedicated) BW
          profile or multiple (dedicated) BW profiles. In the former
          case (single BW profile), the Ethernet SENDER_TSPEC object
          includes a single Ethernet Bandwidth Profile TLV. In the
          second case, the Ethernet SENDER_TSPEC includes a set of more
          than one Ethernet Bandwidth Profile TLVs (whose respective
          Index value is associated to a single CTi value).
    
          Note that the current specification allows for combining
          shared and dedicated BW profiles to the same LSP. That is, an
          Ethernet SENDER_TSPEC object MAY include multiple Ethernet
          Bandwidth Profile TLVs whose respective index can be
          associated on a 1:1 basis to a single CTi or to a set of
          multiple CTi.
    
          For each subobject of the EXTENDED_CLASSTYPE object [MCOS]:
             o Each CTi value SHOULD correspond 1:1 to MEF CE VLAN-CoS
    
    
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             o The BW requested per CTi field MAY be used for bandwidth
               accounting purposes.
    
          By default, the value of the Index field MUST be set to 0.
    
       Reserved: 16 bits
    
          These bits SHOULD be set to zero when sent and MUST be ignored
          when received.
    
       CIR (Committed Information Rate): 32 bits
    
          The value of the CIR is in units of bytes per second. The CIR
          is encoded as a 32-bit IEEE single-precision floating-point
          number (see [RFC4506]).
    
          The CIR value MUST be greater than or equal to 0.
    
       CBS (Committed Burst Size): 32 bits
    
          The value of the CBS is in units of bytes. The CBS is encoded
          as a 32-bit IEEE single-precision floating-point number (see
          [RFC4506]).
    
          When CIR is strictly greater than 0 (CIR > 0), the CBS MUST be
          greater than or equal to the maximum frame size.
    
       EIR (Excess Information Rate): 32 bits
    
          The value of the EIR is in units of bytes per second. The EIR
          is encoded as a 32-bit IEEE single-precision floating-point
          number (see [RFC4506]).
    
          The EIR value MUST be greater than or equal to 0.
    
       EBS (Excess Burst Size): 32 bits
    
          The value of the EBS is in units of bytes. The EBS is encoded
          as a 32-bit IEEE single-precision floating-point number (see
          [RFC4506]).
    
          When EIR is strictly greater than 0 (EIR > 0), the EBS MUST be
          greater than or equal to the maximum frame size.
    
    5. Ethernet FLOWSPEC Object
    
       The Ethernet FLOWSPEC object (Class-Num = 12, Class-Type = TBA by
    
    
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       IANA, with recommended value 6) has the same format as the
       Ethernet SENDER_TSPEC object.
    
    6. Ethernet ADSPEC Object
    
       There is no ADSPEC object associated with the Ethernet
       SENDER_TSPEC object.
    
       Either the ADSPEC object is omitted or an IntServ ADSPEC with the
       Default General Characterization Parameters and Guaranteed
       Service fragment is used, see [RFC2210].
    
    7. Processing
    
       The Ethernet SENDER_TSPEC and FLOWSPEC objects specified in this
       document MAY be used for signaling Ethernet LSP. For signaling
       such LSP, in the Generalized LABEL_REQUEST object (see
       [RFC3471]), the Switching Type field MUST be set to the value 51
       (L2SC) and the LSP Encoding Type field MUST be set to the value 2
       (Ethernet).
    
       The Ethernet SENDER_TSPEC object carries the traffic
       specification generated by the RSVP session sender. The Ethernet
       SENDER_TSPEC object SHOULD be forwarded and delivered unchanged
       to both intermediate and egress nodes.
    
       The Ethernet FLOWSPEC object carries reservation request
       information generated by receivers. As with any FLOWSPEC object,
       Ethernet FLOWSPEC object flows upstream toward the ingress node.
    
       Intermediate and egress nodes MUST verify that the node itself
       and the interfaces on which the LSP will be established can
       support the requested Switching Granularity, MTU and values
       included in sub-object TLVs. These nodes MUST be configured with
       the same pre-defined CT sets as the index value signaled as part
       of the index field of the Ethernet Bandwidth Profile TLV (see
       Section 4.1). If the requested value(s) can not be supported, the
       receiver node MUST generate a PathErr message with the error code
       "Traffic Control Error" and the error value "Service unsupported"
       (see [RFC2205]).
    
       In addition, if the MTU field is received with a value smaller
       than the minimum transfer unit size of the Ethernet frame (e.g.
       46 bytes for Ethernet V2, 38 bytes for IEEE 802.3), the node MUST
       generate a PathErr message with the error code "Traffic Control
       Error" and the error value "Bad Tspec value" (see [RFC2205]).
    
    
    
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       Error processing of the CLASSTYPE object follows rules defined in
       [RFC4124]. Error processing of the EXTENDED_CLASSTYPE object
       follows rules defined in [MCOS]. Moreover, an LSR receiving a
       Path message with the EXTENDED_CLASSTYPE object, which recognizes
       the object and the particular Class-Type but does detect a
       mismatch in the index values, MUST send a PathErr message towards
       the sender with the error code "Extended Class-Type Error" and
       the error value "Class-Type mismatch" (see [RFC2205]).
    
    8. Security Considerations
    
       This document introduces no new security considerations to either
       [RFC3473].
    
       GMPLS security is described in section 11 of [RFC3471] and refers
       to [RFC3209] for RSVP-TE. Further details of MPLS-TE and GMPLS
       security can be found in [MPLS-SEC].
    
    9. IANA Considerations
    
       IANA maintain registries and sub-registries for RSVP-TE as used
       by GMPLS. IANA is requested to make allocations from these
       registries as set out in the following sections.
    
    9.1. RSVP Objects Class Types
    
       This document introduces two new Class Types for existing RSVP
       objects. IANA is requested to make allocations from the "Resource
       ReSerVation Protocol (RSVP) Parameters" registry using the "Class
       Names, Class Numbers, and Class Types" sub-registry.
    
       Class Number  Class Name                            Reference
       ------------  -----------------------               ---------
       9             FLOWSPEC                              [RFC2205]
    
                     Class Type (C-Type):
    
                     6   Ethernet SENDER_TSPEC             [This.I-D]
    
       Class Number  Class Name                            Reference
       ------------  -----------------------               ---------
       12            SENDER_TSPEC                          [RFC2205]
    
                     Class Type (C-Type):
    
                     6   Ethernet SENDER_TSPEC             [This.I-D]
    
    
    
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    9.2. Ethernet Switching Granularities
    
       IANA maintains a registry of GMPLS parameters called "Generalized
       Multi-Protocol Label Switching (GMPLS) Signaling Parameters".
    
       IANA is requested to create a new sub-registry called "Ethernet
       Switching Granularities" to contain the values that may be
       carried in the Switching Granularity field of the Ethernet
       SENDER_TSPEC object.
    
       Values shall be assigned as follows:
    
       000-239,255  Assigned by IANA via IETF Standards Action
       240-254      Reserved for Vendor Specific Usage
       256-65535    Not assigned at this point in time
    
       Values 256 through 65535 are not to be assigned at this time.
       Before any assignments can be made in this range, there MUST be a
       Standards Action that specifies IANA Considerations that covers
       the range being assigned.
    
       Initial entries in this sub-registry are as follows:
    
       Value   Switching Granularity                      Reference
       -----   --------------------------------------     ----------
         0     Provided in signaling.                     [GMPLS-ESVCS]
         1     Ethernet Port (for port-based service)     [This.I-D]
         2     Ethernet Frame (for EVC-based service)     [This.I-D]
       255     Reserved Value                             [This.I-D]
    
    9.3. Ethernet Sender TSpec TLVs
    
       IANA maintains a registry of GMPLS parameters called "Generalized
       Multi-Protocol Label Switching (GMPLS) Signaling Parameters".
    
       IANA is requested to create a new sub-registry called "Ethernet
       SENDER_TSPEC TLVs" to contain the TLV type values for TLVs
       carried in the Ethernet SENDER_TSPEC object.
    
       Values shall be assigned as follows:
    
       000-239,255  Assigned by IANA via IETF Standards Action
       240-254      Reserved for Private Use
       256-65535    Not assigned at this point in time
    
       Values 256 through 65535 are not to be assigned at this time.
       Before any assignments can be made in this range, there MUST be a
    
    
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       Standards Action that specifies IANA Considerations that covers
       the range being assigned.
    
       Initial entries in this sub-registry are as follows:
    
       Type     Description                        Reference
       -----    --------------------------------   ---------
         0      Reserved Value                     [This.I-D]
         1      Reserved Value                     [This.I-D]
         2      Ethernet Bandwidth Profile         [This.I-D]
         3      Layer 2 Control Processing (L2CP)  [This.I-D]
       255      Reserved Value                     [This.I-D]
    
    9.4. Ethernet Bandwidth Profiles
    
       IANA maintains a registry of GMPLS parameters called "Generalized
       Multi-Protocol Label Switching (GMPLS) Signaling Parameters".
    
       IANA is requested to create a new sub-registry called "Ethernet
       Bandwidth Profiles" to contain bit flags carried in the Ethernet
       Bandwidth Profile TLV of the Ethernet SENDER_TSPEC object.
    
       Bits are to be allocated by IETF Standards Action. Bits are
       numbered from bit 0 as the low order bit.
    
       Bit   Hex   Description                   Reference
       ---   ----  --------------------------    -------------
        0    0x01 Coupling flag (CF)            [This.I-D]
        1    0x02 Color mode (CM)               [This.I-D]
    
    10. Acknowledgments
    
       Many thanks to Adrian Farrel for his comments. Lou Berger
       provided the input on control traffic processing.
    
    11. References
    
    11.1. Normative References
    
       [GMPLS-ESVCS]  Berger, L., et al., "Generalized MPLS (GMPLS)
                      Support for Metro Ethernet Forum and G.8011
                      Ethernet Services", draft-berger-ccamp-gmpls-
                      ether-svcs, work in progress.
    
       [RFC2205]  Braden, R., Zhang, L., Berson, S., Herzog, S., and S.
                  Jamin, "Resource ReSerVation Protocol (RSVP) --
                  Version 1 Functional Specification", RFC 2205,
    
    
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                   September 1997.
    
       [RFC2210]  Wroclawski, J., "The Use of RSVP with IETF Integrated
                  Services", RFC 2210, September 1997.
    
       [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
                  Requirement Levels", BCP 14, RFC 2119, March 1997.
    
       [RFC3209]  Awduche, D., Berger, L., Gan, D., Li, T., Srinivasan,
                  V., and G. Swallow, "RSVP-TE: Extensions to RSVP for
                  LSP Tunnels", RFC 3209, December 2001.
    
       [RFC3471]  Berger, L., "Generalized Multi-Protocol Label
                  Switching (GMPLS) Signaling Functional Description",
                  RFC 3471, January 2003.
    
       [RFC3473]  Berger, L., "Generalized Multi-Protocol Label
                  Switching (GMPLS) Signaling Resource ReserVation
                  Protocol-Traffic Engineering (RSVP-TE) Extensions",
                  RFC 3473, January 2003.
    
       [RFC4124]  Le Faucheur, F. et al, "Protocol extensions for
                  support of Diff-Serv-aware MPLS Traffic Engineering",
                  RFC 4124, June 2005.
    
       [RFC4506]  Eisler, M., Ed. "XDR: External Data Representation
                  Standard", RFC 4506, STD 67, May 2006.
    
    11.2. Informative References
    
       [ETHv2]   Digital, Intel, and Xerox, "The Ethernet -- A Local
                 Area Network: Data Link Layer and Physical Layer
                 Specifications", Version 2.0, November 1982.
    
       [IEEE802.3] IEEE 802.3 LAN/MAN CSMA/CD (Ethernet) Access
                   Method, IEEE Standard for Information technology-
                   Specific requirements - Part 3: Carrier Sense
                   Multiple Access with Collision Detection (CMSA/CD)
                   Access Method and Physical Layer Specifications,
                   IEEE 802.3-2008.
    
       [MEF10.1]  The MEF Technical Specification, "Ethernet Services
                  Attributes Phase 2", MEF 10.1, November 2006.
    
       [MEF6]     The Metro Ethernet Forum, "Ethernet Services
                  Definitions - Phase I", MEF 6, June 2004.
    
    
    
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       [MCOS]     Minei, I., et al., "Extensions for Differentiated
                  Services-aware Traffic Engineered LSPs", draft-minei-
                  diffserv-te-multi-class, work in progress.
    
       [MPLS-SEC] Fang, L. et al., "Security Framework for MPLS and
                  GMPLS Networks", draft-ietf-mpls-mpls-and-gmpls-
                  security-framework, work in progress.
    
    Author's Addresses
    
       Dimitri Papadimitriou
       Alcatel-Lucent Bell
       Copernicuslaan 50
       B-2018 Antwerpen, Belgium
       Phone: +32 3 2408491
       E-mail: dimitri.papadimitriou@alcatel-lucent.be
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    D. Papadimitriou        Expires July 19, 2010             [Page 14]
    

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