Re: RFD: Ack Vectors

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On 7/30/07, Gerrit Renker <gerrit@xxxxxxxxxxxxxx> wrote:
> With regard to the Ack Vectors, my suggestion however is
>  * to remove the sysctl - it is confusing;

Agree in current form provided the next bullet point is carried out.

>  * to make the use of Ack Vectors dependent on the current RX CCID;

It should be on for CCID2, off for CCID3. It is required for CCID2
according to RFC4341. It is optional for CCID3 according to RFC4342.
However last time I checked with our CCID3 it breaks it. I haven't
checked recently though....

>  * the TX CCID need not be considered for the Ack Vector allocation, since the `Send Ack Vector'
>    feature is server-priority (RFC 4340, 6.4) and thus negotiated by the side which has the RX CCID;

OK.

>  * optional and for debugging: disabling of Ack Vectors in the Kconfig menu.
>
This implies it is on by default. I think it should be off by default
for CCID3. The information is not actually needed from an ack vector
and actually creates more traffic. It seems like
draft-kohler-dccp-ccid3-drops-01.txt is a replacement for ack vectors
in CCID3 if you need extra info...

Ian
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