Ethereal-dev: Re: [ethereal-dev] ECN = Explicit Congestion Notification

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From: Richard Sharpe <sharpe@xxxxxxxxxx>
Date: Fri, 15 Sep 2000 01:34:20 +0900
Opps, I did not notice that this had already been replied to :-(


At 01:16 AM 9/15/00 +0900, Richard Sharpe wrote:
>Hi,
>
>Well, I am sure that we will look at adding such support ... I might look
>at it  next week.
>
>BTW, how are you again?
>
>At 01:29 PM 9/14/00 -0600, Dax Kelson wrote:
>>
>>RFC 2481 describes ECN:
>>
>>http://www.faqs.org/rfcs/rfc2481.html
>>
>>In a nutshell, here is how it works in IPv4:
>>
>>ECN uses the two bits after the DiffServe field in the IP header, the
>>"CU" bits.
>>
>>Bit 6 is designated as the ECT bit, and bit 7 is designated as the CE bit.
>>
>>
>>The first layer 4 protocol to get ECN support is TCP.
>>
>>Bit 9 in the Reserved field of the TCP header is designated as the
>>ECN-Echo flag.
>>
>>Bit 8 in the Reserved field of the TCP header is designated as the CWR
>>flag.
>>
>>It would be great if Ethereal could decode and display ECN.  The Linux
>>kernel 2.4.0-test8 and up support and use ECN.
>>
>>Dax Kelson
>>Guru Labs
>>
>>
>
>Regards
>-------
>Richard Sharpe, sharpe@xxxxxxxxxx
>Samba (Team member, www.samba.org), Ethereal (Team member, www.zing.org)
>Contributing author, SAMS Teach Yourself Samba in 24 Hours
>Author, Special Edition, Using Samba
>
>
>

Regards
-------
Richard Sharpe, sharpe@xxxxxxxxxx
Samba (Team member, www.samba.org), Ethereal (Team member, www.zing.org)
Contributing author, SAMS Teach Yourself Samba in 24 Hours
Author, Special Edition, Using Samba