Sally Floyd wrote:
Gorry -
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I think that the large fields (three bytes) for the Lossless Length and Data Length fields in the Loss Intervals Option are useful, even for CCID-4. It is true that CCID-4 is going to send at most 100 pps, but the round-trip time could be some seconds, leading to a sending rate of hundreds of packets per RTT. To maintain this, the CCID-4 sending would want to hear about fairly large loss intervals, larger than 256 packets. So clearly at least a two-byte field is needed for the Lossless Length and Data Length fields, even for CCID-4.
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There is also a simplicity argument for using the same option as CCID3, with its fixed length. This same simplicity argument applies to Dropped Packets.
If there is a strong space argument let's hear it! Perhaps the solution would be a new option, Loss Intervals [2 byte] or something. But I think we should stick with 3 bytes for everything, for simplicity.
Eddie
