New Generation ADSL MIB Baseline Text Proposal

1
New Generation ADSL MIBBaseline Text Proposal
draft-ietf-morgenstern-ngadsl-00.txt
Presented by Moti Morgenstern, ECI Telecom
2
Introduction

• draft-ietf-morgenstern-ngadsl-00.txt is
  presented to the IETF as a proposed baseline for
  the NG-ADSL MIB.
• NG-ADSL MIB is also known as ADSL2 MIB
• The draft
• Is based on ITU-997.1 and its amendment.
• Usually takes DSL Forums TR-90 as a reference.
• Not final
• People may eventually choose to migrate from the
  current ADSL MIB (RFC 2662) to the NG-ADSLMIB.

3
Textual Conventions

• There are plenty of textual conventions (TCs) in
  the current document.
• Probably, most of those TCs will be relocated to
  form a separate document.

4
Topics covered by the NG-ADSL MIB

• Line/Channel/Sub-Carrier Status
• Line Inventory
• Line Commands
• Line Configuration (Spectrum, Channels/Services,
  PM Thresholds)
• Performance Monitoring (PM) Results (Current and
  History)

5
TR-90 compared to the Draft MIB
6
adsl2LineStatusTable

• Based on ATU Line Status table (5.2.1) in TR-90
• The actual ADSL mode selected (See note)
• The actual Power management state (See note)
• Initialization result (failure cause, See note)
• Last initialization state Downstream/Upstream
• ATUC/ATUR Status (alarms)
• Loop Attenuation Downstream/Upstream
• Signal Attenuation Downstream/Upstream
• SNR Margin Downstream/Upstream
• Maximum Attainable Data Rate Downstream/Upstream
• Actual Power Spectrum Density Downstream/Upstream
• Actual Aggregate Transmit Power
  Downstream/Upstream
• Note In TR-90 it is in ADSL Line table
  (5.1.1), but we prefer to have it here because it
  is a Read-Only object.

7
adsl2ChannelStatusTable

• Based on ATU Channel Status table (5.2.2) in
  TR-90
• The actual Data rate Downstream/Upstream
• The previous Data rate Downstream/Upstream
• The actual Interleaved Delay Downstream/Upstream
• ATUC/ATUR ATM Status (In G.997.1 but not in
  TR-90)
• No Cell Delineation
• Loss of Cell Delineation
• Relevant if the Data Path is ATM

8
adsl2SCStatusTable (1)

• First part is based on ATU Sub-Carrier Status
  table (5.5.1) in TR-90
• Sub-Carrier level
• SNR measurement time not included
• SNR Margin Downstream/Upstream
• Bits Allocation Downstream/Upstream
• Gains Allocation Downstream/Upstream
• Channel Characteristics Downstream
• Linear representation Scale
• Linear representation Real part of the results
• Linear representation Imaginary part of the
  results
• Logarithmic representation Measurement Time
• Logarithmic representation of the results
• Channel Characteristics Upstream (same structure)

9
adsl2SCStatusTable (2)

• Quiet Line Noise (QLN) Downstream
• QLN PSD Measurement Time
• QLN PSD results
• Quiet Line Noise (QLN) Upstream (same structure)
• May add TSSi Downstream/Upstream
• Second part is Line Level Status (not in 5.5.1)
• Loop Attenuation Downstream/Upstream
• Signal Attenuation Downstream/Upstream
• SNR Margin Downstream/Upstream
• Actual SNR Downstream/Upstream Maximum Attainable
  Data Rate Downstream/Upstream
• Actual Aggregate Transmit Power
  Downstream/Upstream

10
adsl2LineInventoryTable

• Based on first objects in ADSL Termination Unit
  table (5.1.3) in TR-90
• ATU G.994.1 Vendor ID
• ATU System Vendor ID
• ATU Version Number
• ATU Serial Number
• ATU Self-Test Result
• ATU ADSL Transmission System Capabilities
• The rest of the objects are not inventory
• They are in the same table that provides the
  current Line PM parameters

11
adsl2LineCommandTable

• A different approach for objects in ADSL Line
  table (5.1.1) in TR-90
• Power Management State Forced (PMSF)
• Loop Diagnostics Mode Forced (LDSF)
• LDSF result

12
adsl2LineConfigTable

• The first two objects in ADSL Line table
  (5.1.1) of TR-90
• Pointer to ADSL Line Configuration Template
• Should add a pointer to ADSL Line Threshold
  Template

13
adsl2LineConfTemplateTable

• Originally the structure of the template in TR-90
  is
• Pointer to ADSL Line Spectrum Profile
• Pointer to ADSL Line Service Profile
• The Line Service Profile is actually a frame
• May include multiple instances of channel
  profiles
• In this draft the structure is
• Pointer to ADSL Line Spectrum Profile
• Channel 1 configuration
• Pointer to a channel profile
• Rate Adaptation Ratio Downstream/Upstream
• Same for Channels 2-4
• The advantages of this approach
• Reduces the number of profile layers
• Reduces the number of different channel profiles
  required

14
adsl2LineConfTemplateTable (Illustration)
Configuration Template
Configuration Template
RA ratio DS/US Channel1 RA ratio DS/US Channel4
0
Spectrum Profile
Service Profile
Spectrum Profile
Channel Profile
Channel Profile
Channel Profile
Channel1 Profile
Channel Profile
Channel Profile
Channel Profile
Channel1 Profile RA ratio DS/US Channel1
Proposed MIB
TR-90
15
adsl2LineConfProfTable (1)

• Based on ADSL Line Spectrum Profile table
  (5.1.7) in TR-90
• Sub Carriers Mask Downstream/Upstream
• Rate Adaptation Mode Downstream/Upstream
• Up-shift Noise Margin Downstream/Upstream
• Minimum Time Interval for Up-shift Rate
  Adaptation Downstream/Upstream
• Down-shift Noise Margin Downstream/Upstream
• Minimum Time Interval for Down -shift Rate
  Adaptation Downstream/Upstream
• Target Noise Margin Downstream/Upstream
• Maximum Noise Margin Downstream/Upstream
• Minimum Noise Margin Downstream/Upstream
• Minimum Overhead Rate Downstream/Upstream

16
adsl2LineConfProfTable (2)

• (Continued from previous slide)
• ATU Transmission System Enabling (ATSE)
• Power Management State Enabling (PMMode)
• L0-TIME
• L2-TIME
• L2-ATPR
• L2-ATPRT
• Should add RFIBANDS downstream

17
adsl2LineConfProfTable (3)

• The following are objects that will move into a
  table similar to ADSL Mode-Specific PSD
  Configuration (5.1.8) in TR-90
• Maximum Nominal Power Spectral Density
  Downstream/Upstream
• Maximum Nominal Aggregate Transmit Power
  Downstream/Upstream
• Maximum Nominal Upstream Receive Power
• The following parameters should also appear in
  that table
• PSD Mask Downstream
• PSD Mask Selection Upstream

18
adsl2ChConfProfileTable

• Based on ADSL Channel Configuration table
  (5.1.6) in TR-90
• Minimum Data Rate Downstream/Upstream
• Minimum Reserved Data Rate Downstream/Upstream
• Maximum Data Rate Downstream/Upstream
• Rate Adaptation Ratio Downstream/Upstream is
  already covered
• Minimum Data Rate in low power state
  Downstream/Upstream (Upstream is not covered in
  TR-90)
• Maximum Interleave Delay Downstream/Upstream
• Minimum Impulse Noise Protection
  Downstream/Upstream
• Maximum Bit Error Ratio Downstream/Upstream
• Data Rate Threshold Upshift Downstream/Upstream
• IMA mode enable/Disable (Not covered in TR-90)

19
adsl2PMLineCurrTable

• The current part of the ATU Line Performance
  table (5.3.1) in TR-90 that refers to the ATU
  layer
• 15 minutes current interval
• Forward Error Correction Seconds - Line
• Errored Seconds Line
• Severely Errored Seconds Line
• Loss of Signal Seconds Line
• Unavailable Seconds Line
• 24 hours current interval (same structure)
• Also includes last 6 objects from ADSL
  Termination Unit table (5.1.3) in TR-90
• Number of previous 15-minute Intervals
• Number of previous invalid 15-minute Intervals
• Current 15-minute Interval Elapsed Time
• Number of previous 1-day Intervals
• Number of previous invalid 1-day intervals
• Current 1-day Interval Elapsed Time

20
adsl2PMLineInitTable

• The current part of the ATU Line Performance
  table (5.3.1) in TR-90 that refers to the whole
  line
• 15 minutes current interval
• Full Initializations
• Failed Full Initializations
• Short Initializations
• Failed Short Initializations
• 24 hours current interval (same structure)

21
adsl2PMLineHist15MinTable

• The 15 minutes history part of the ATU Line
  Performance table (5.3.1) in TR-90 that refers
  to the ATU layer
• Monitored Time
• Forward Error Correction Seconds - Line
• Errored Seconds Line
• Severely Errored Seconds Line
• Loss of Signal Seconds Line
• Unavailable Seconds Line
• Interval Validity

22
adsl2PMLineHist1DayTable

• The 1 day history part of the ATU Line
  Performance table (5.3.1) in TR-90 that refers
  to the ATU layer
• Monitored Time
• Forward Error Correction Seconds - Line
• Errored Seconds Line
• Severely Errored Seconds Line
• Loss of Signal Seconds Line
• Unavailable Seconds Line
• Interval Validity

23
adsl2PMLineInitHist15MinTable

• The 15 minutes history part of the ATU Line
  Performance table (5.3.1) in TR-90 that refers
  to the whole line
• Full Initializations
• Failed Full Initializations
• Short Initializations
• Failed Short Initializations
• Interval Validity

24
adsl2PMLineInitHist1DayTable

• The 1 day history part of the ATU Line
  Performance table (5.3.1) in TR-90 that refers
  to the whole line
• Full Initializations
• Failed Full Initializations
• Short Initializations
• Failed Short Initializations
• Interval Validity

25
adsl2PMChCurrTable

• The current part of the ATU Channel
  Performance table (5.3.2) in TR-90
• 15 minutes current interval
• Code Violations Channel
• Forward Error Corrections Channel
• 24 hours current interval (same structure)
• Also includes the following channel level objects
  (which do not appear in TR-90)
• Number of previous 15-minute Intervals
• Number of previous invalid 15-minute Intervals
• Current 15-minute Interval Elapsed Time
• Number of previous 1-day Intervals
• Number of previous invalid 1-day intervals
• Current 1-day Interval Elapsed Time

26
adsl2PMChHist15MinTable

• The 15 minutes part of the ATU Channel
  Performance table (5.3.2) in TR-90
• Monitored Time
• Code Violations Channel
• Forward Error Corrections Channel
• Interval Validity

27
adsl2PMChHist1DTable

• The 1 day part of the ATU Channel Performance
  table (5.3.2) in TR-90
• Monitored Time
• Code Violations Channel
• Forward Error Corrections Channel
• Interval Validity