WeOS TTDP MIB Conformance
=========================

MIB:
- Original: TTDP MIB (IEC 61375-2-5 2014)
  File: TTDP-MIB.my
  Version: "201212211751Z"
  This "original/official" version is currently not supported.
- WeOS Revision: TTDP MIB (WeOS update to IEC 61375-2-5 2014)
  File: TTDP-MIB-WEOS.my
  Version: "201606100000Z"
The WeOS revision of the TTDP MIB will replace the TTDP MIB on
Westermo products. A "diff" file to show the difference between the
"official" and the "WeOS version" of the TTDP MIB is provided.
The "diff" file is found in the conformance directory and named
"TTDP-MIB-diff.txt".

NOTE!
=====
The official TTDP MIB version documented in "IEC 61375-2-5 2014" is in
many aspects difficult to interpret, and for some OIDs we believe it
contains errors.
In the "Variations" section below we list several OIDs where we have
updated the DESCRIPTION to explain our current implementation.
For some OIDs we have even updated the "MAX-ACCESS" or "SYNTAX"
definitions where we believe the official MIB specifications has
errors.
As the 61375-2-5 standard matures, the official TTDP MIB may be
updated, or its interpretation may be clarified or changed. That may
in turn imply that the WeOS implementation needs to be updated
accordingly.

Supported Object Groups
=======================
ttdpBasicGroup
ttdpStatsGroup

Variations
==========
ttdpBasicGroup
- ttdpPeerLineId
  MAX-ACCESS read-only
- ttdpEtbId
  SYNTAX Unsigned32 (0..3)
  DESCRIPTION "ETB number on which local ETBN is connected to.
  - 0: backbone
  - 1: multimedia
  - 2: not specialized
  - 3: not specialized"
- ttdpEtbnCnt
  DESCRIPTION "Number of ETBN on ETB. Reports number of ETBNs
  currently present."
- ttdpLocalEtbnId
  DESCRIPTION "Inaugurated ETBN number on ETB for this ETBN."
- ttdpEtbnId
  DESCRIPTION "ETBN ID on ETB.
  1..N ETBN are ordered from lowest cstUUID toward direction2 for
  ascending ETBN Ids.
  Only present ETBNs are included, while missing ETBN are not
  listed. The sequence may therefore include gaps. This may change to
  include entries with missing nodes, then reported as value '0'."
- ttdpEtbnOrientation
  "ETBN orientation in relation to train reference direction."
- ttdpEtbnNodeRole
   DESCRIPTION "ETBN node role. Always reports undefined. For
   redundant ETBNs, please use the VRRP MIB to monitor the role."
- ttdpEtbnVectorTable
  DESCRIPTION "Table of ETBN vectors for each ETBN in each
  direction. The vector in each direction is currently an ordered list
  of MAC addresses, starting with the node closest to the ETBN. This
  may be subject to change, to match the unordered vectors included in
  the TOPOLOGY messages."
- ttdpCstOrientation
  SYNTAX TtdpOrientation
