... | ... | @@ -244,7 +244,7 @@ The enhancements to current IEEE 802.1AS include |
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and page
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11":http://www.ieee802.org/1/files/public/docs2012/new-avb-nfinn-preempt-advantage-0112-v02.pdf
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### New topology resolution (probably enhancement of IEEE 802.1Qat-2010)
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### Possible effort on new topology resolution (probably enhancement of IEEE 802.1Qat-2010)
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- aims at providing multiple paths for both redundancy and (less
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importantly) enhanced network throughput
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... | ... | @@ -260,12 +260,15 @@ The enhancements to current IEEE 802.1AS include |
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- dynamic redundancy - redundant paths from the source to the
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receiver exist but only one is used at a time - no duplication
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at the receiver
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- Toyota requires Quick Network Recovery (\< 100ms),
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- Toyota: quick version of RSTP+802.1AS+802.1Qat (\< 100ms),
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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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this includes:
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- communication recovery (RSTP)
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- \[re-\]synchronization (802.1AS)
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- \[re-\]reservation of stream (802.1Qat)
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- Broadcom: abandon RSTP, improved MSRP (802.1AS defines SRP,
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802.1Q-2011 defines multi-SRP) to provide multi-path support
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(all the potential paths from the talker to the listener are
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discovered, one or more paths can be used -- listener can
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request redundant stream through different paths)
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[here](http://www.ieee802.org/1/files/public/docs2012/avb-phkl-ext-msrp-0312-v1.pdf)
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## **AVB *Gen2* vs. White Rabbit**
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