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RFC 4803, "Generalized Multiprotocol Label Switching (GMPLS) Label Switching Router (LSR) Management Information Base", February 2007

Source of RFC: ccamp (rtg)

Errata ID: 3831
Status: Verified
Type: Editorial
Publication Format(s) : TEXT

Reported By: Adrian Farrel
Date Reported: 2013-12-12
Verifier Name: Stewart Bryant
Date Verified: 2013-12-23

Section 6 says:

   In mplsXCTable:
   {
      mplsXCIndex                = 0x01,
      mplsXCInSegmentIndex       = 0x00000015,
      mplsXCOutSegmentIndex      = 0x00000012,
      mplsXCLspId                = 0x0102 -- unique ID
      mplsXCLabelStackIndex      = 0x00, -- only a single outgoing label
      mplsXCRowStatus            = createAndGo(4)
   }

   In mplsXCTable:
   {
      mplsXCIndex                = 0x02,
      mplsXCInSegmentIndex       = 0x00000016,
      mplsXCOutSegmentIndex      = 0x00000013,
      mplsXCLspId                = 0x0102 -- unique ID
      mplsXCLabelStackIndex      = 0x00, -- only a single outgoing label
      mplsXCRowStatus            = createAndGo(4)
   }

It should say:

   In mplsXCTable:
   {
      mplsXCIndex                = 0x01,
      mplsXCInSegmentIndex       = 0x00000015,
      mplsXCOutSegmentIndex      = 0x00000012,
      mplsXCLspId                = 0x0102 -- unique ID
      mplsXCLabelStackIndex      = 0x00, -- only a single outgoing label
      mplsXCRowStatus            = createAndGo(4)
   }

   In mplsXCTable:
   {
      mplsXCIndex                = 0x01,
      mplsXCInSegmentIndex       = 0x00000016,
      mplsXCOutSegmentIndex      = 0x00000013,
      mplsXCLspId                = 0x0102 -- unique ID
      mplsXCLabelStackIndex      = 0x00, -- only a single outgoing label
      mplsXCRowStatus            = createAndGo(4)
   }

Notes:

The entries in the mplsXCTable are indexed by {mplsXCIndex, mplsXCInSegmentIndex, mplsOutSegmentIndex}. All XC entries for the same LSP should share a common value of mplsXCIndex because mplsTunnelXCPointer can be set to point to the first entry and then all of the other entries can be found.

The error in the example in Section 6 is that it shows a different value of mplsXCIndex for the reverse direction cross-connects. It should be set to the same value as is used for the forward direction cross-connect.

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