Transcript 21CN Plan of Record – Summary Overview

WBC Quality of Service (QoS) Options
Andy Maddocks
Dave Brennan
Paul Fishburn
Paul Burke
23rd October 2008
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The information contained in this Presentation is confidential information as per your terms and conditions with BT
Wholesale (BTW). Please treat it accordingly and do not forward, republish or permit unauthorized access. The
information contained in this Presentation represents BTW’s plans for the WBC product at the time this Presentation
was developed and may be subject to change. In relation to any products/services referred to in this Presentation
which are currently under development and/or trial, BT gives no undertaking or other commitment that the
product/service will be made commercially available in the same forms.
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and do not constitute any contractual or other obligation.
All prices/charges are shown exclusive of value added tax and any other applicable duties and taxes which will be
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© British Telecommunications plc, 2008. All rights reserved.
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Agenda
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Elevated and Standard End User Access (EUA) Options
Quality of Service (QoS) Application Fit
Overview of QoS options
– Best Efforts
– Assured Rate
– Real Time
– DDQ
Capacity Management and performance measures
QoS Pricing Structure
Q&A
2
End User Access Options – Elevated vs Standard
Elevated is a premium service that allows a higher percentage of traffic throughput
when compared to the Standard option.
Elevated
• If high congestion occurs and you selected Elevated you have more throughput.
• You get at least 3Mbit/s for 90% of the time over the busiest 3-hour period.
• Cost is £1.70 in dense and £3.40 in other cells per EU per month.
• This does not guarantee packets would not be delayed.
• Orderable via the new 21c interface
• Equivalent in 20c are IPstream Office and BT IPstream Max Premium
Standard
• You get at least 2Mbit/s for 90% of the time over the busiest 3-hour period
• Blue print being written and led by the Fibre product team on suitability
• 20c use this for VOIP today with mixed results.
• Do not recommend being used for primary voice
3
QoS Application Fit - Class levels & associated
application characteristics
Best Efforts
Assured Rate QoS
Real Time QoS **
DDQ **
Data
Video
Voice
Data
Web browsing
High Definition
Music/video publishing
Higher Bandwidths
IP Telephony, voice
messaging, video
telephony
Dedicated downstream
end to end bandwidth.
Continually available.
Email & interactive
gaming
e-Commerce & instant
messaging
Increased interactivity,
bandwidth
& traffic volumes
More efficient codec's
More resilient to losses
& congestion
Increasingly demanding
QoS requirements due
to higher interactivity
Increased signaling and
Constant Picture Quality control demands
vs. Constant Bit Rate
Systems’ performance
demands (e.g. call
centre systems)
Increasing variety of
applications necessitates
QoS mechanisms to
protect more demanding
applications
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Less complex set up than
Assured rate.
The Choice – Priority of Applications
Best Efforts
Has 3 options aimed at Data applications.
• Sub*
• Best Efforts
• Priority*
Real Time**
Highest option of QoS aimed at any application needing low latency and jitter.
• Strict priority
• Higher quality of VOIP
• Multiple channels (220,350,700 k\bits)
• 0.01 packet loss
• Reduced risk of bursts of high latency
• Not available on 20c
* Not yet available dates to be confirmed
** Real Time dependant on prioritisation of product enhancements
5
The Choice – Dedicated Bandwidth
Assured
• Aimed at Video applications
• Bookable sessions of dedicated traffic up to 24hrs in duration
• Default 5hrs duration.
• Capacity driven application i.e. CVLAN capability
• End User line must be able to support the bandwidth selected
• Customer Enablement i.e. configuration set up
• Order via new 21c interface
• CP has upfront costs of system development
• Advanced Services is the closet equivalent on 20c
Dedicated Downstream QoS (DDQ)
• Clear channel dedicated bandwidth
• Set up as part of end user provision order
• Available 24 / 7
• Capacity driven application i.e. CVLAN capability
• Closest 20c product is Datastream
• Packet marking is the same as Assured
• Guaranteed only downstream
• End User line must be able to support the dedicated service
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Packet markings
Class
DSCP codepoint
Binary value
Real-Time
EF
Assured
AF11
001 010
10
Best Effort (Priority)
AF21
010 010
18
Best Effort (Normal)
DE
Best Effort (Sub)
EXP/LU
101 110
Decimal value
46
000 000
0
000 011
3
WARNING: If a CP does not buy Assured Rate or Real Time traffic classes, but marks traffic as
Assured Rate or Real Time, this will result in traffic being dropped. This is different to the behaviour on
IPstream.
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Wholesale Broadband Backhaul Management
Traffic prioritisation to suit application
needs:
-Real Time
-Assured
- Best Efforts
Call Server
BRAS
BTW Backhaul
MSAN
CP Network
Core
Node (20)
Capacity management of backhaul to ensure:
-Assured / Real Time traffic guaranteed
delivery up to agreed levels
- Sufficient bursting capacity for Best Efforts
traffic
- Higher throughput for Elevated
Openreach
MSIL
BT Wholesale
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CPs can order per traffic class
bandwidth to determine the overall
experience of their products
Content
Downstream QoS at the BRAS
Pre-defined
- queue
High
Real Time
Highest priority level
On-demand queue
CVLAN shaped to
specified max. bandwidth,
and competes for SVLAN
bandwidth with other
CVLANs
Assured Rate
Use of either priority level or weighting to guarantee bandwidth
Hi weight
Priority
Med weight
Normal
X
Best - Effort
Lo weight
Sub- BE
Low
Higher weight for
Elevated
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Downstream QoS at the BRAS - Technical Proposal
for DDQ
High
Pre-defined
- queue
Real Time
Highest priority level
Pre-Defined queue
End User traffic shaped to specified
Dedicated Downstream Bandwidth
max. bandwidth.
On-demand queue
Real Time & Best Efforts only
Assured Rate
compete for SVLAN resource with
other EU traffic
Use of either priority level or weighting to guarantee bandwidth
X
•
•
•
•
•
Hi weight
Priority
Med weight
Normal
Lo weight
Sub- BE
Weight set higher for Elevated
EUs than Standard EUs, to give
greater share of SVLAN for BE
Achieved with dedicated queue at the BRAS for Dedicated Downstream QoS traffic
Uses same packet marking as Assured Rate (Assured Forwarding traffic class)
Available at ppp start rather than configured on-demand as Assured Rate
Excess Traffic will be dropped rather than forwarded as Best Efforts
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Best-Effort
Low
WBC Performance Targets
Real Time
Packet loss: 0.01% for a peak period of time
Assured Rate
Session Blocking Ratio: 1% during the busy period
Best Efforts Elevated EUA
Throughput: Above 3M for 90% of the time during the 3-hour
busy period
Best Efforts Standard EUA
Throughput: Above 2M for 90% of the time during the 3-hour
busy period
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WBC Price List
Basic Service
Minimum
Period
Operative
Date
Charge Unit
N/A
N/A
N/A
N/A
N/A
N/A
Reset min period
01/05/2008
01/05/2008
01/05/2008
01/05/2008
01/05/2008
08/09/2008
01/05/2008
Occurrence
Occurrence
Occurrence
Occurrence
Occurrence
Occurrence
Occurrence
Standard EU Rental (SMPF / 8Mbits/s)
Aggregation Point and Network Capacity
AP (Individual Nodes)
AP Contracted Total Bandwidth
Modify AP Bandwidth
Extension Path
EP Connection
EP Modify
100Mb EP
200Mb EP
300Mb EP
400Mb EP
500Mb EP
600Mb EP
700Mb EP
800Mb EP
900Mb EP
1 Gb EP
10Gb EP
1 Month
01/05/2008
Month
12 Months
12 Months
Reset min term
01/05/2008
01/05/2008
01/05/2008
Month
Mbit/s per month
Occurrence
N/A
Reset min period
12 Months
12 Months
12 Months
12 Months
12 Months
12 Months
12 Months
12 Months
12 Months
12 Months
12 Months
01/05/2008
01/05/2008
01/05/2008
01/05/2008
01/05/2008
01/05/2008
01/05/2008
01/05/2008
01/05/2008
01/05/2008
01/05/2008
01/05/2008
01/05/2008
Occurrence
Occurrence
EP per Year
EP per Year
EP per Year
EP per Year
EP per Year
EP per Year
EP per Year
EP per Year
EP per Year
EP per Year
EP per Year
Optional features
charged in addition to basic service charges
Per End User Charges
Connection
Order Cancellation (up to PONR)
CP Migration
Product Migration from IPstream or Datastream
Multiple Product Migration
Cease
EU Access Modify Orders
End User Access Maintenance
Maintenance Class 4
Special Faults Investigation (SFI)
Aggregation Point Network Capacity
AP Bandwidth above Contracted Total
0-5%
>5%
Contracted Assured Rate Bandwidth (BW)
AR BW Usage above Contracted: 0-5%
AR BW Usage above Contracted: >5%
Session
Set up
Duration
Duration
Duration
1 Month
1 Month
1 Month
01/05/2008
01/05/2008
01/05/2008
Month
Month
Month
1 Month
N/A
01/05/2008
01/08/2008
Month
Occurance
01/05/2008
01/05/2008
01/05/2008
01/05/2008
01/05/2008
Mbit/s
Mbit/s
Mbit/s
Mbit/s
Mbit/s
01/05/2008
01/05/2008
01/05/2008
01/05/2008
Session
100Kbit/s per min
100Kbit/s per min
100Kbit/s per min
N/A
N/A
12 Months
N/A
N/A
per
per
per
per
per
12
Geographical Tiers
C
E
Mid
Non-Dense
£6.17
£7.95
£7.95
£79.34
£79.34
£79.34
£1,528.00
£0.00
£0.00
£0.00
£1,704.00
£3,408.00
£5,112.00
£6,816.00
£8,520.00
£10,212.00
£11,916.00
£13,620.00
£15,324.00
£17,028.00
£57,060.00
A
Dense
Geographical Tiers
E
C
NonMid
Dense
£0.00
£1.70
£0.10
£0.00
£3.40
£0.20
£0.00
£3.40
£0.50
£79.34
£150.00
£0.00
£50.00
£50.00
£79.34
£150.00
£0.00
£50.00
£50.00
£79.34
£150.00
£0.00
£50.00
£50.00
£6.90
£144.00
month
month
month
month
month
Charges for Assured Rate
- 00:00 - 08:00
- 08:00 - 18:00
- 18:00 - 00:00
A
Dense
£34.86
£15.00
£11.00
£11.00
£0.00
£15.75
£0.00
Non
Geographic
Unit
Per End User Charges
Rentals
Uncapped ADSL2+
Elevated Best Effort
Assured Rate
Non
Geographic
£0.01500
£0.00006
£0.00006
£0.00006
QoS Pricing Structure
Current Price Structure
Proposed Structure
QoS charged
independently of Best
Efforts
Basic Traffic
7.934 p per Kbit/s per mth
Best efforts
0p Kbit/s p.m.
per mth
Real Time
7p Kbit/s p.m.
(indicative)
Assured
0p Kbit/s
p.m.
Best efforts
7.934p Kbit/s
p.m.
Real Time
14.934AP
p.m.
(indicative)
Assured
2p Kbit/s p.m.
(indicative)
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Q&A
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