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

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From: Richard Sharpe <sharpe@xxxxxxxxxx>
Date: Fri, 15 Sep 2000 01:16:07 +0900
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