... | @@ -145,14 +145,21 @@ Improvements to AVB Gen 1: |
... | @@ -145,14 +145,21 @@ Improvements to AVB Gen 1: |
|
- P802.1Qbu : Frame Preemption
|
|
- P802.1Qbu : Frame Preemption
|
|
There are some ideas that will be potentially included into AVB
|
|
There are some ideas that will be potentially included into AVB
|
|
Gen2:
|
|
Gen2:
|
|
- new topology
|
|
- new topology resolution
|
|
resolution
|
|
|
|
|
|
|
|
### Requirements for AVB Gen 2
|
|
### Requirements for AVB Gen 2
|
|
|
|
|
|
- a
|
|
- Quick Network ecovery (\< 100ms),
|
|
- b
|
|
[page 6](http://www.ieee802.org/1/files/public/docs2011/new-avb-KimNakamura-automotive-network-requirements-0311.pdf),
|
|
- c
|
|
this includes:
|
|
|
|
- communication recovery (RSTP)
|
|
|
|
- \[re-\]synchronization (802.1AS)
|
|
|
|
- \[re-\]reservation of stream (802.1Qat)
|
|
|
|
- Ultra-low latency for critical traffic,
|
|
|
|
[page 8](http://www.ieee802.org/1/files/public/docs2011/new-avb-KimNakamura-automotive-network-requirements-0311.pdf)
|
|
|
|
- maximum latency: 100 over 3 bridge hops @ 100Mb or 1Gbps
|
|
|
|
- requires resource
|
|
|
|
reservation
|
|
|
|
|
|
### P802.1ASbt: Timing and Synchronization for Time-Sensitive Applications
|
|
### P802.1ASbt: Timing and Synchronization for Time-Sensitive Applications
|
|
|
|
|
... | @@ -192,3 +199,5 @@ The enhancements to current IEEE 802.1AS include |
... | @@ -192,3 +199,5 @@ The enhancements to current IEEE 802.1AS include |
|
- b
|
|
- b
|
|
- c
|
|
- c
|
|
|
|
|
|
|
|
## **AVB *Gen2* vs. White Rabbit**
|
|
|
|
|