SIP Working Group                                            James Polk
Internet-Draft                                            Cisco Systems
Expires: April 16th, 2008
Intended Status: Standards Track (as PS)


       IANA Registration of New Session Initiation Protocol (SIP)
                  Resource-Priority Header Namespaces
                  draft-ietf-sip-rph-new-namespaces-00

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Copyright Notice

   Copyright (C) The IETF Trust (2007).

Abstract

   This document creates additional Session Initiation Protocol
   Resource-Priority header namespaces, to be IANA registered.









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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .  2
     1.1  Conventions used in this document  . . . . . . . . . . . .  2
   2.  New RPH Namespaces Created  . . . . . . . . . . . . . . . . .  2
   3.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  4
     3.1 IANA Resource-Priority Namespace Registration . . . . . . .  4
     3.2 IANA Priority-Value Registrations  . . . . . . . . . . . .   5
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .  9
   5.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  9
   6.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  9
     6.1   Normative References  . . . . . . . . . . . . . . . . . .  9
       Author's Address  . . . . . . . . . . . . . . . . . . . . . .  9
       Intellectual Property and Copyright Statements  . . . . . . .  9

1.  Introduction

   The US Defense Information Systems Agency (DISA) is rolling out
   their Session Initiation Protocol (SIP) based architecture at this
   time.  This network will require more Resource-Priority header (RPH)
   namespaces than were defined, and IANA registered, in RFC 4412
   [RFC4412].  The purpose of this document is to define these
   additional namespaces.  Each will be RFC 4412 defined preemption
   based in nature, and will have the same 5 priority-values.

   One aspect within DISA's network will be to allow a session or call
   to only preempt another call established with the same
   Resource-Priority header namespace, but no other namespace.

   In other words, messages with a namespace of dsn-X may only
   have their RPH priority-values compared for preferential treatment
   to other dsn-X namespaces, and not any other namespaces, unless
   two or more (complete) namespaces are considered to be equivalent,
   as defined in section 8 of RFC 4412 [RFC4412].

   This is all a matter of local policy.  However, this policy is a
   known requirement from DISA to support moving forward.


1.1  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 [RFC2119].


2.  New RPH Namespaces Created

   The following 50 SIP Resource Priority header namespaces are created
   by this document:


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      dsn-000000      dsn-000010      dsn-000020      dsn-000030
      dsn-000001      dsn-000011      dsn-000021      dsn-000031
      dsn-000002      dsn-000012      dsn-000022
      dsn-000003      dsn-000013      dsn-000023
      dsn-000004      dsn-000014      dsn-000024
      dsn-000005      dsn-000015      dsn-000025
      dsn-000006      dsn-000016      dsn-000026
      dsn-000007      dsn-000017      dsn-000027
      dsn-000008      dsn-000018      dsn-000028
      dsn-000009      dsn-000019      dsn-000029
      dsn-00000A      dsn-00001A      dsn-00002A
      dsn-00000B      dsn-00001B      dsn-00002B
      dsn-00000C      dsn-00001C      dsn-00002C
      dsn-00000D      dsn-00001D      dsn-00002D
      dsn-00000E      dsn-00001E      dsn-00002E
      dsn-00000F      dsn-00001F      dsn-00002F

   Each namespace listed above will have the same 5 priority-levels:

      .0 (lowest priority)
      .2
      .4
      .6
      .8 (highest priority)

   A namespace from the above list will not be considered for
   preferential treatment over another namespace unless local policy
   has configured a SIP entity processing two messages (each with
   different namespaces) as being equivalent (see section 8 of RFC 4412
   [RFC4412] for this detailed).

   The reality of this is, a message (or a call) with the following
   Resource-Priority header value:

      dsn-000001.8

   for example, will not have any preferential treatment over a
   message, for example, with this Resource-Priority header value:

      dsn-000010.0

   because they are two difference namespaces.

   The dash '-' character is just like any other character, and is not
   to be considered a delimiter in any official way within any
   namespace here.  This MAY change in future efforts.

   As stated in Section 9 of RFC 4412 [RFC4412], an IANA registered
   namespace SHOULD NOT change the number, and MUST NOT change the
   relative priority order, of its assigned priority-values.



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3.  IANA Considerations

   Abiding by the rules established within RFC 4412 [RFC4412], this is
   a Standards-Track document registering new SIP Resource-Priority
   header namespaces, and their associated priority-values and intended
   algorithms.


3.1 IANA Resource-Priority Namespace Registration

   Within the "Resource-Priority Namespaces" registry in the
   sip-parameters section of IANA, the following table lists the new
   RPH namespaces registered by this document (NOTE: 'RFCXXXX' is to be
   replaced by this document's RFC number if this document is published
   by the RFC-Editor):

                        Intended     New warn-   New resp.
   Namespace   Levels   Algorithm      code        code     Reference
   ----------  ------  ------------  ---------   ---------  ---------
   dsn-000000    5      preemption      no          no      [RFCXXXX]
   dsn-000001    5      preemption      no          no      [RFCXXXX]
   dsn-000002    5      preemption      no          no      [RFCXXXX]
   dsn-000003    5      preemption      no          no      [RFCXXXX]
   dsn-000004    5      preemption      no          no      [RFCXXXX]
   dsn-000005    5      preemption      no          no      [RFCXXXX]
   dsn-000006    5      preemption      no          no      [RFCXXXX]
   dsn-000007    5      preemption      no          no      [RFCXXXX]
   dsn-000008    5      preemption      no          no      [RFCXXXX]
   dsn-000009    5      preemption      no          no      [RFCXXXX]
   dsn-00000A    5      preemption      no          no      [RFCXXXX]
   dsn-00000B    5      preemption      no          no      [RFCXXXX]
   dsn-00000C    5      preemption      no          no      [RFCXXXX]
   dsn-00000D    5      preemption      no          no      [RFCXXXX]
   dsn-00000E    5      preemption      no          no      [RFCXXXX]
   dsn-00000F    5      preemption      no          no      [RFCXXXX]
   dsn-000010    5      preemption      no          no      [RFCXXXX]
   dsn-000011    5      preemption      no          no      [RFCXXXX]
   dsn-000012    5      preemption      no          no      [RFCXXXX]
   dsn-000013    5      preemption      no          no      [RFCXXXX]
   dsn-000014    5      preemption      no          no      [RFCXXXX]
   dsn-000015    5      preemption      no          no      [RFCXXXX]
   dsn-000016    5      preemption      no          no      [RFCXXXX]
   dsn-000017    5      preemption      no          no      [RFCXXXX]
   dsn-000018    5      preemption      no          no      [RFCXXXX]
   dsn-000019    5      preemption      no          no      [RFCXXXX]
   dsn-00001A    5      preemption      no          no      [RFCXXXX]
   dsn-00001B    5      preemption      no          no      [RFCXXXX]
   dsn-00001C    5      preemption      no          no      [RFCXXXX]
   dsn-00001D    5      preemption      no          no      [RFCXXXX]
   dsn-00001E    5      preemption      no          no      [RFCXXXX]
   dsn-00001F    5      preemption      no          no      [RFCXXXX]


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   dsn-000020    5      preemption      no          no      [RFCXXXX]
   dsn-000021    5      preemption      no          no      [RFCXXXX]
   dsn-000022    5      preemption      no          no      [RFCXXXX]
   dsn-000023    5      preemption      no          no      [RFCXXXX]
   dsn-000024    5      preemption      no          no      [RFCXXXX]
   dsn-000025    5      preemption      no          no      [RFCXXXX]
   dsn-000026    5      preemption      no          no      [RFCXXXX]
   dsn-000027    5      preemption      no          no      [RFCXXXX]
   dsn-000028    5      preemption      no          no      [RFCXXXX]
   dsn-000029    5      preemption      no          no      [RFCXXXX]
   dsn-00002A    5      preemption      no          no      [RFCXXXX]
   dsn-00002B    5      preemption      no          no      [RFCXXXX]
   dsn-00002C    5      preemption      no          no      [RFCXXXX]
   dsn-00002D    5      preemption      no          no      [RFCXXXX]
   dsn-00002E    5      preemption      no          no      [RFCXXXX]
   dsn-00002F    5      preemption      no          no      [RFCXXXX]
   dsn-000030    5      preemption      no          no      [RFCXXXX]
   dsn-000031    5      preemption      no          no      [RFCXXXX]


3.2  IANA Priority-Value Registrations

   Within the "Resource-Priority Priority-values" registry in the sip-
   parameters section of IANA, the list of priority-values for each of
   the newly created RPH namespaces from section 4.1 of this document,
   prioritized least to greatest, is registered by the following:

   Namespace: dsn-000000
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-000001
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-000002
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-000003
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-000004
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-000005
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-000006


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   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-000007
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-000008
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-000009
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-00000A
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-00000B
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-00000C
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-00000D
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-00000E
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-00000F
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-000010
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-000011
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-000012
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-000013


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   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-000014
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-000015
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-000016
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-000017
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-000018
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-000019
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-00001A
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-00001B
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-00001C
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-00001D
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-00001E
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-00001F
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-000020


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   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-000021
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-000022
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-000023
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-000024
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-000025
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-000026
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-000027
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-000028
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-000029
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-00002A
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-00002B
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-00002C
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-00002D


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   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-00002E
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-00002F
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-000030
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"

   Namespace: dsn-000031
   Reference: RFCXXXX (this document)
   Priority-Values (least to greatest): "0", "2", "4", "6", "8"


4.  Security Considerations

   This document has the same Security Considerations as RFC 4412.


5.  Acknowledgements

   To Jeff Hewett for his helpful guidance in this effort.


6.  References

6.1  Normative References

 [RFC4412] Schulzrinne, H., Polk, J., "Communications Resource
           Priority for the Session Initiation Protocol (SIP)", RFC
           4411, Feb 2006

 [RFC2119] S. Bradner, "Key words for use in RFCs to Indicate
           Requirement Levels", RFC 2119, March 1997


Author's Address

   James Polk
   3913 Treemont Circle
   Colleyville, Texas  76034
   USA

   Phone: +1-817-271-3552
   Fax:   none
   Email: jmpolk@cisco.com


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