rfc3038.txt

最新的RFC

   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |U|VPID Inband Propose (0x0505) |      Message Length           |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                           Message ID                          |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                           VPID TLV                            |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                           Optional Parameters                 |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

   Message Id
     Four octet integer used to identify this message.





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   VPID TLV
     VPID TLV contains VPID value.  Type of label TLV is VPID(0x0703).

5.1.6 VPID ACK Message

   An LSR send the VPID ACK message when the LSR accepts the VPID
   PROPOSE message.

    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
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |U|  VPID ACK     (0x0506)      |      Message Length           |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                           Message ID                          |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                           VPID TLV                            |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                           VCID Message ID                     |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                           Optional Parameters                 |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

   Message ID
     Four octet integer used to identify this message.

   VPID TLV
     The VPID TLV contains the VPID value of the received VPID PROPOSE
     message.

   VCID Message ID
     This value is the same as that of received VCID PROPOSE message.




















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5.1.7 VPID NACK Message

   An LSR send the VPID NACK message when the LSR accepts the VPID
   PROPOSE message.

    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
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |U|  VPID NACK    (0x0507)      |      Message Length           |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                           Message ID                          |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                           VPID TLV                            |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                           VCID Message ID                     |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                           Optional Parameters                 |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

   Message ID
     Four octet integer used to identify this message.

   VPID TLV
     The VPID TLV contains the VPID value of the received VPID PROPOSE
     message.

   VCID Message ID
     This value is the same as that of received VCID PROPOSE message.

5.2 Objects

5.2.1 VCID Label TLV

   An LSR uses VCID Label TLV to encode labels for use on the link which
   does not have the same data link label at both ends of a VC.

    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
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |U|F|VCID Label   (0x0203)      |          Length               |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                              VCID                             |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

   VCID
     This is 4 byte VCID value.





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5.2.2 VCID Message ID TLV

    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
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |U|F|VCID Message ID(0x0701)    |          Length               |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                       VCID Message ID                         |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

   VCID Message ID
     This is 4 byte VCID Message ID

5.2.3 VCID Temporary ID TLV

   An LSR uses the VCID temporary ID TLV for the VCID notification
   procedure of the outband notification using a small-sized field.

    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
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |U|F| VCID Temporary ID (0x0702)|          Length               |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |  Temporary ID |
   +-+-+-+-+-+-+-+-+

   Temporary ID:
     The value carried in the user specific field in the layer 3
     protocol field in the BLLI ID in the ATM Forum UNI 3.1/4.0

5.2.4 VPID Label TLV

   An LSR uses VPID TLV for the VPID notification procedure.

    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
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |U|F|   VPID      (0x0703)      |          Length               |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |            VPID               |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

   VPID
     This is 2 byte VPID value.







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Security Considerations

   This document does not introduce new security issues other than those
   present in the LDP and may use the same mechanisms proposed for this
   technology.

Acknowledgments

   The authors would like to acknowledge the valuable technical comments
   of Yoshihiro Ohba, Shigeo Matsuzawa, Akiyoshi Mogi, Muneyoshi Suzuki,
   George Swallow and members of the LAST-WG of the WIDE Project.

References

   [LDP]    Andersson, L., Doolan, P., Feldman, N., Fredette, A. and B.
            Thomas, "LDP Specification", RFC 3036, January 2001.

   [GIT]    Suzuki, M., "The Assignment of the Information Field and
            Protocol Identifier in the Q.2941 Generic Identifier and
            Q.2957 User-to-user Signaling for the Internet Protocol",
            RFC 3033, January 2001.

   [ENCAPS] Rosen, E., Viswanathan, A. and R. Callon, "MPLS Label Stack
            Encoding", RFC 3032, January 2001.



























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Authors' Addresses

   Ken-ichi Nagami
   Computer & Network Development Center, Toshiba Corporation,
   1, Toshiba-cho, Fuchu-shi,
   Tokyo, 183-8511, Japan

   Phone: [phone]
   EMail: [e-mail]


   Noritoshi Demizu
   WaterSprings.ORG
   1-6-11-501, Honjo, Sumida-ku, Tokyo, 130-0004, Japan

   EMail: [e-mail]


   Hiroshi Esaki
   Computer Center, University of Tokyo,
   2-11-16 Yayoi, Bunkyo-ku,
   Tokyo, 113-8658, Japan

   Phone: [phone]
   EMail: [e-mail]


   Yasuhiro Katsube
   Computer & Network Development Center, Toshiba Corporation,
   1, Toshiba-cho, Fuchu-shi,
   Tokyo, 183-8511, Japan

   Phone: [phone]
   EMail: [e-mail]


   Paul Doolan
   Ennovate Networks
   60 Codman Hill Road
   Boxborough, MA

   Phone: [phone] x103
   EMail: [e-mail]








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Full Copyright Statement

   Copyright (C) The Internet Society (2001).  All Rights Reserved.

   This document and translations of it may be copied and furnished to
   others, and derivative works that comment on or otherwise explain it
   or assist in its implementation may be prepared, copied, published
   and distributed, in whole or in part, without restriction of any
   kind, provided that the above copyright notice and this paragraph are
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   The limited permissions granted above are perpetual and will not be
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   This document and the information contained herein is provided on an
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   TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
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Acknowledgement

   Funding for the RFC Editor function is currently provided by the
   Internet Society.



















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