call 3/4/2015 notes
Folks,
Start: 3/4/2015 8PM PST
End: 3/4/2015 9PM PST
Present:
Jouni Korhonen
Bomin Li
Kevin Bross
Peter Ashwood-Smith
Raz Gabe
Jinri Huang
??
Discussion:
* EtherType
* Packet sizes
* CRB/VRB flows and their support
* Sequence numbers & timestamps
Decisions (by consensus):
* EthType - only one, if further "types" were needed provide equivalent functionality
using subtypes in RoE header.
* Packet sizes - no recommendations unless someone has good data to backup
specific numbers. Generic recommendation not to provide numbers
* CRB/VRB - need to be prepared for VBR flows as a preparation e.g. for foreseen
compressed flows.
* Sequence Numbers and timestamp:
- both needed; sequence numbers essential to find out lost packets; field sizes
to be determined
- good to have 1588 alignment for timestamp format -> explore how and what
- timestamp not needed in every packet. More likely e.g. at the
beginning of each radio frame
- between timestamps rely on sequence numbers
- explore whether sequence number and timestamp could use
the same field; 80 bits is too much though
- to shorted the size of timestamp look for way to do so
One proposal to predefine the time reference -> e.g. TAI
- preferable to allow sub-ns accuracy in the timestamp field
(like 1588 allows)
Next call: 3/17/2015 at 6AM PST
- Jouni
--
Jouni Korhonen, Ph.D, Associate Technical Director
CTO Office, Networking, Broadcom Corporation
O: +1-408-922-8135, M: +1-408-391-7160