... | @@ -150,7 +150,8 @@ Improvements to AVB Gen 1: |
... | @@ -150,7 +150,8 @@ Improvements to AVB Gen 1: |
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### Requirements for AVB Gen 2
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### Requirements for AVB Gen 2
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- Network reliability:
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- Network reliability:
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- support of quick network recovery (\<100ms [Toyota,
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- support of quick (must be predictable and pre-calculable)
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network recovery (\<100ms [Toyota,
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page 6](http://www.ieee802.org/1/files/public/docs2011/new-avb-KimNakamura-automotive-network-requirements-0311.pdf))
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page 6](http://www.ieee802.org/1/files/public/docs2011/new-avb-KimNakamura-automotive-network-requirements-0311.pdf))
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and seamless redundancy with zero time recovery ([General
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and seamless redundancy with zero time recovery ([General
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Motors](http://www.ieee802.org/1/files/public/docs2012/new-avb-jochim-redundancy-requirements-GM-perspective-AVB2-0312.pdf)),
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Motors](http://www.ieee802.org/1/files/public/docs2012/new-avb-jochim-redundancy-requirements-GM-perspective-AVB2-0312.pdf)),
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... | @@ -161,6 +162,8 @@ Improvements to AVB Gen 1: |
... | @@ -161,6 +162,8 @@ Improvements to AVB Gen 1: |
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- support of fault isolation/fault tolerance (e.g.: "babbling
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- support of fault isolation/fault tolerance (e.g.: "babbling
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idiot" and "fault tolerant clock sync", [General Motors,
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idiot" and "fault tolerant clock sync", [General Motors,
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pages 36](http://www.ieee802.org/1/files/public/docs2012/new-avb-jochim-redundancy-requirements-GM-perspective-AVB2-0312.pdf))
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pages 36](http://www.ieee802.org/1/files/public/docs2012/new-avb-jochim-redundancy-requirements-GM-perspective-AVB2-0312.pdf))
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- any mechanism that supports reliability must not break
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predictability/determinism/low latency
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- Ultra-low latency for critical traffic
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- Ultra-low latency for critical traffic
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- Toyota
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- Toyota
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([page 2](http://www.ieee802.org/1/files/public/docs2011/new-avb-nakamura-automotive-backbone-requirements-0907-v02.pdf))
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([page 2](http://www.ieee802.org/1/files/public/docs2011/new-avb-nakamura-automotive-backbone-requirements-0907-v02.pdf))
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... | @@ -243,8 +246,8 @@ The enhancements to current IEEE 802.1AS include |
... | @@ -243,8 +246,8 @@ The enhancements to current IEEE 802.1AS include |
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### New topology resolution (probably enhancement of IEEE 802.1Qat-2010)
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### New topology resolution (probably enhancement of IEEE 802.1Qat-2010)
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- aims at providing multiple paths for both redundancy and enhanced
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- aims at providing multiple paths for both redundancy and (less
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network throughput
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importantly) enhanced network throughput
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- Network redundancy - actually two different types of redundancy are
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- Network redundancy - actually two different types of redundancy are
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required
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required
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- static redundancy - redundant paths from the source to the
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- static redundancy - redundant paths from the source to the
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