GMPLS Segment Recovery
RFC 4873

Approval announcement
Draft of message to be sent after approval:

From: The IESG <iesg-secretary@ietf.org>
To: IETF-Announce <ietf-announce@ietf.org>
Cc: Internet Architecture Board <iab@iab.org>,
    RFC Editor <rfc-editor@rfc-editor.org>, 
    ccamp mailing list <ccamp@ops.ietf.org>, 
    ccamp chair <ccamp-chairs@tools.ietf.org>
Subject: Protocol Action: 'GMPLS Based Segment Recovery' to 
         Proposed Standard 

The IESG has approved the following document:

- 'GMPLS Based Segment Recovery '
   <draft-ietf-ccamp-gmpls-segment-recovery-04.txt> as a Proposed Standard

This document is the product of the Common Control and Measurement Plane 
Working Group. 

The IESG contact persons are Ross Callon and David Ward.

A URL of this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-ccamp-gmpls-segment-recovery-04.txt

Technical Summary
 
   This document describes protocol specific procedures for GMPLS
   (Generalized Multi-Protocol Label Switching) RSVP-TE (Resource
   ReserVation Protocol - Traffic Engineering) signaling extensions to
   support label switched path (LSP) segment protection and restoration.
   These extensions are intended to complement and be consistent with
   the Extensions for End-to-End GMPLS-based Recovery.  Implications and
   interactions with Fast Reroute are also addressed.  This document
   also updates the handling of Notify_Request objects.

Working Group Summary
 
  No dissent reported. Good WG consensus. 
 
Protocol Quality
 
  Ross Callon has reviewed this for the IESG. There are multiple 
  implementations and deployment. 

Note to RFC Editor
 
  Note, this document and one other document 
  (draft-ietf-ccamp-gmpls-recovery-e2e-signaling-04.txt) should be   
  progressed together. This document references the other document. 
  Progressing together will ensure the RFC Ed can sort out details, 
  including cross-references between the two documents. 

  There is an IANA nit that will need to be fixed (see IANA note below).

  Also, the reference to draft-lang-ccamp-gmpls-recovery-e2e-signaling 
  should be corrected to draft-ietf-ccamp-gmpls-recovery-e2e-signaling 

IANA Note

  There is an IANA nit that will need to be fixed. In particular:
  sections 9.3 and 9.4 suggest the same value (198) for the
  SECONDARY_EXPLICIT_ROUTE and SECONDARY_RECORD_ROUTE objects.
  Also, I am told that this value has already (recently) been 
  assigned to an unrelated object. Thus, the IANA will need to 
  straighten this out. These and related IANA considerations have
  been cleared up by Adrian Farrel's email to the IANA on Thu, 14 
  Dec 2006 10:52:16.

  His explanation of IANA considerations are (cut and pasted from the 
  attachment to Adrian's email):

IANA requests for

[e2e]     draft-ietf-ccamp-gmpls-recovery-e2e-signaling-04.txt
[seg]     draft-ietf-ccamp-gmpls-segment-recovery-03.txt


All other references are provided for information and context.


====================================================


Registry: RSVP
          Class Names, Class Numbers, and Class Types

  20  EXPLICIT_ROUTE                          [RFC3209]

        Class Types or C-Types:
          1   Type 1 Explicit Route           [RFC3209]

              Sub-object type
                1   IPv4 prefix               [RFC3209]
                2   IPv6 prefix               [RFC3209]
                3   Label                     [RFC3473]
                4   Unnumbered Interface ID   [RFC3477]
               32   Autonomous system number  [RFC3209]
               37   Reserved                  [seg]

  21  ROUTE_RECORD                            [RFC3209]
      (also known as RECORD_ROUTE)

      Class Types or C-Types:
          1   Type 1 Route Record             [RFC3209]

              Sub-object type
                1   IPv4 address              [RFC3209]
                2   IPv6 address              [RFC3209]
                3   Label                     [RFC3473]
                4   Unnumbered Interface ID   [RFC3477]
                5   RRO Attributes            [RFC4420]
               37   Reserved                  [seg]

  37  PROTECTION                              [RFC3473]

      Class Types or C-Types:
        1   Type 1 Protection                 [RFC3473]
        2   Type 2                            [e2e]

  38  PRIMARY PATH ROUTE                      [e2e]

      Class Types or C-Types:
        1   Type 1 Primary Path Route         [e2e]

 198  ALARM_SPEC                              [RFC4783]

      Class Types or C-Types:
        1   Type 1  RESERVED                  [RFC4783]
        2   Type 2  RESERVED                  [RFC4783]
        3   IPv4 IF_ID ALARM_SPEC             [RFC4783]
        4   IPv6 IF_ID ALARM_SPEC             [RFC4783]

 199  ASSOCIATION                             [e2e]

      Class Types or C-Types:
        1   Type 1 IPv4 Association           [e2e]
        2   Type 2 IPv6 Association           [e2e]

 200  SECONDARY_EXPLICIT_ROUTE                [seg]

      Same C-Type values as EXPLICIT_ROUTE object
      (C-Num 20) with the following additions:

        For Class 1, C-Type 1, the following additional
        Sub-object type is defined:

           Sub-object type
            37   Protection                   [seg]

 201  SECONDARY_RECORD_ROUTE                  [seg]

      Same C-Type values as EXPLICIT_ROUTE object
      (C-Num 20) with the following additions:

        For Class 1, C-Type 1, the following additional
        Sub-object type is defined:

           Sub-object type
            37   Protection                   [seg]

============================================================

Registry: GMPLS Signaling Parameters
          Interface_ID Types

  Type  Length  Format      Description                 Reference
  ----  ------  ----------  --------------------------  ---------
   512       8  See below   REFERENCE_COUNT             [RFC4783]
   513       8  See below   SEVERITY                    [RFC4783]
   514       8  See below   GLOBAL_TIMESTAMP            [RFC4783]
   515       8  See below   LOCAL_TIMESTAMP             [RFC4783]
   516  varies  See below   ERROR_STRING                [RFC4783]

============================================================

Registry: GMPLS Signaling Parameters
          Administrative Status Information Flags

  Value       Name                             Reference
  ----------- -------------------------------- ---------
  0x80000000  Reflect (R)                      [RFC3473][RFC3471]
  0x00000020  Lockout (L)                      [e2e]
  0x00000010  Inhibit Alarm Communication (I)  [RFC4783]
  0x00000004  Testing (T)                      [RFC3473][RFC3471]
  0x00000002  Administratively down (A)        [RFC3473][RFC3471]
  0x00000001  Deletion in progress (D)         [RFC3473][RFC3471]


============================================================

Registry: RSVP
          Error Codes and Values

Error Code Meaning

  01 Admission Control Failure                [RFC2205]

      The sixteen bits of the Error Value field are
        ssur cccc cccc cccc
      as defined in [RFC2205]

        The following globally-defined sub-codes may appear in the low-
        order 12 bits when ssur = 0000:

        Sub-code  Meaning                         Reference
        --------  ------------------------------  ---------
               1  Delay bound cannot be met       [RFC2205]
               2  Requested bandwidth unavailable [RFC2205]
               3  MTU in flowspec larger than     [RFC2205]
                  interface MTU
               4  LSP Admission Failure           [e2e]
               5  Bad Association Type            [e2e]

  02 Policy Control Failure                   [RFC2205]

      This Error Code has the following globally-defined Error
      Value sub-codes:

        0 = Information reporting                 [RFC2750]
        1 = Warning                               [RFC2750]
        2 = Reason unknown                        [RFC2750]
        3 = Generic Policy Rejection              [RFC2750]
        4 = Quota or Accounting violation         [RFC2750]
        5 = Flow was preempted                    [RFC2750]
        6 = Previously installed policy expired   [RFC2750]
            (not refreshed)
        7 = Previous policy data was replaced &   [RFC2750]
            caused rejection
        8 = Policies could not be merged          [RFC2750]
            (multicast)
        9 = PDP down or non functioning           [RFC2750]
       10 = Third Party Server (e.g., Kerberos)   [RFC2750]
            unavailable
       11 = POLICY_DATA object has bad syntax     [RFC2750]
       12 = POLICY_DATA object failed Integrity   [RFC2750]
            Check
       13 = POLICY_ELEMENT object has bad syntax  [RFC2750]
       14 = Mandatory PE Missing (Empty PE is in  [RFC2750]
            the PD object)
       15 = PEP Out of resources to handle        [RFC2750]
            policies.
       16 = PDP encountered bad RSVP objects or   [RFC2750]
            syntax
       17 = Service type was rejected             [RFC2750]
       18 = Reservation Style was rejected        [RFC2750]
       19 = FlowSpec was rejected (too large)     [RFC2750]
       20 = Hard Pre-empted                       [e2e]

  24 Routing Problem                          [RFC3209]

      This Error Code has the following globally-defined Error
      Value sub-codes:

        1 = Bad EXPLICIT_ROUTE object         [RFC3209]
        : (snip)
       16 = Unknown Interface Index           [RFC3477]
       17 = Unsupported LSP Protection        [e2e]
       18 = PROTECTION object not applicable  [e2e]
       19 = Bad PRIMARY PATH_ROUTE object     [e2e]
       20 = PRIMARY PATH_ROUTE object not     [e2e]
            applicable
       21 = LSP Segment Protection Failed     [seg]

  25 Notify Error                             [RFC3209]

      This Error Code has the following globally-defined Error
      Value sub-codes:

        1 = RRO too large for MTU             [RFC3209]
        2 = RRO Notification                  [RFC3209]
        3 = Tunnel locally repaired           [RFC3209]
        4 = Control Channel Active State      [RFC3473]
        5 = Control Channel Degraded State    [RFC3473]
        6 = Preferable path exists            [RFC4736]
        7 = Local link maintenance required   [RFC4736]
        8 = Local node maintenance required   [RFC4736]
        9 = LSP Failure                       [e2e]
       10 = LSP Recovered                     [e2e]
       11 = LSP Locally Failed                [e2e]

  31 Alarms                                   [RFC4783]

      The Error Value sub-codes for this Error Code
      have values and meanings identical to the values
      and meanings defined in the IANAItuProbableCause
      Textual Convention of IANA-ITU-ALARM-TC-MIB
      in the Alarm MIB [RFC3877].

============================================================

Registry: GMPLS Signaling Parameters
          Association Type
(This is a new registry)

   Assignment by IANA are subject to IETF expert review
   process i.e. IETF Standards Track RFC Action.

   Value   Type                 Reference
   -----   -----------------    ---------
       0   Reserved             [e2e]
       1   Recovery (R)         [e2e]
       2   Resource Sharing (R) [seg]