AVB Bandwidth Reservation

#AABAC
AVnu Alliance Broadcast Advisory Council
AVB Bandwidth Reservation
Lee Minich, Lab X Technologies
Note: The Technical presentation portion of this session will
be recorded and made available online to Broadcast Advisory
Counsil members
Welcome
AVnu Alliance Broadcast Advisory Counsil
Lee Minich
AVnu Alliance, Chairman, Marketing Work Group
Lab X Technologies, President
Note: The Technical presentation portion of this session will
be recorded and made available online to Broadcast Advisory
Counsil members
•
•
•
•
Agenda
Brief background / context
Technical presentation – Bandwidth
Reservation
Open Discussion
Logistics for Next Session
What/Who is the AVnu
Alliance?
• The industry consortium to lead the adoption of
certified open standards-based AV networking
• AVB (Audio/Video Bridging) is the first set of AV networking
standards approved by the IEEE.
• A non-profit organization defining AVB certification
and promotion
• Members include major automotive, professional AV, consumer
and silicon/platform manufacturers.
• Member manufacturers are given access to test tools and
plugfests in advance of submission for official AVnu
interoperability certification.
What is the importance of
AVB in A/V networking?
• The AVB standards are written by the IEEE,
the group that defines Ethernet
• AVB is free of royalties and open for use by anyone
• Network engineers have tools to accommodate AV
requirements
• Precise and reliable, suitable for rigorous
professional applications
• Data pathway from source to destination is guaranteed
• Low latency
• Synchronized
Classic Audio and Video Distribution
• Fixed number of channels per
cable
• Unidirectional
• Point to Point
• Industry specific infrastructure
AVB improves the following in Ethernet:
• Best-Effort Delivery Strategy
• Non-Deterministic
• No Concept of Isochronous Delivery
• Is Not Content-Aware
Audio Video Bridging (AVB)
AVB Terminology
• Stream – A “pipe” that contains one or more channels
of audio and/or video data in an AVB cloud
• Talker – An entity in the AVB cloud that can send a
stream
• Listener – An entity in the AVB cloud that can receive
a stream
• Controller – An entity on the network which configures
and connects Talkers and Listeners in an AVB network
AVB Terminology
• A Controller configures Streams (flow of AV
media) between a Talker and Listener
• ….or many Listeners
Todays (live) broadcast infrastructure
Native AVB infrastructure (tomorrow)
Audio Video Bridging
(AVB)
Bandwidth
Reservation
Configuration
Traffic Shaping
Time
Synchronization
Audio Video Bridging
(AVB)
Bandwidth
Reservation
802.1Q – 2012
802.1Q Forwarding and Queuing for TimeSensitive Streams (FQTSS)
802.1Qat
Stream Reservation Protocol-(SRP)
Stream Reservation Protocol
• Difference between Priority
and Reservation
Stream Reservation Protocol
• Guarantees a “First Class
Ticket” for your AV media
• Protects your network against
rogue traffic / unauthorized
devices
• Automatic self configuration.
An IT guy “In the Box”
The AVB Cloud
Bandwidth Reservation Protocol
• Enables the cloud to self-manage its
bandwidth allocations
• Talkers/Listeners request permission before
streams are allowed to flow
• The cloud guarantees a portion of the bandwidth
will be available for legacy traffic (per port)
• Priority-based reservations
Advertising a stream
S1
S1
Advertise (S1)
Advertise (S1)
P4
P1
Stream 1 (S1)
Source
Advertise (S1)
P8
P3
P8
S1
SRP Command
A/V Data
Flowing
S1
Available
Stream
Subscribing to a Stream
P8
Subscribe(S1)
S1
P6
Subscribe(S1)
P
6
P
4
Stream 1 (S1)
Sink
S1
P3
25%
P8
25%
75%
Subscribe(S1)
0%
50%
A/V Bandwidth Allocation
Port 6
0%
Stream 1 (S1)
Sink
Legacy Traffic (www)
P1
SRP Commands
S1
Available Stream
75%
A/V Bandwidth Allocation
Port 8
Stream 1 (S1)
Source
A/V Data Flowing
50%
P3
S1
P4
Subscribe(S1)
AVB Cloud Defending Bandwidth
P8
P6
S1 S2 S3
Subscribe(S2)
P3
S1 S2 S3
P4
P6
Subscribe(FAIL)
Stream 1 (S1)
Subscribe(S2)
P7
Stream 3 (S3)
P5
25%
Stream 2 (S2)
P8
75%
A/V Data Flowing
S1
Available Stream
P3
Stream 1 (S1)
Sink
P4
Subscribe(S3)
SRP Commands
25%
Subscribe(FAIL)
Subscribe(S2)
0%
50%
A/V Bandwidth Allocation
Port 6
Legacy Traffic (www)
Stream 1 (S1)
Sink
75%
A/V Bandwidth Allocation
Port 8
Subscribe(S3)
Subscribe(FAIL)
P1
S1 S2 S3
0%
50%
P6
P7
Subscribe(S2)
Stream Reservation Protocol
• Guarantees a “First Class
Ticket” for your AV media
• Protects your network against
rogue traffic / unauthorized
devices
• Automatic self configuration.
An IT guy “In the Box”
Open
Discussion
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Next Session
–
–
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Thursday, May 16 2013
8 AM PDT (GMT-7)
Topic
•
“How Big do my pipes need to be?” – Traffic
Shaping & Infrastructure planning
Feedback on this session
Thank
You!
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