On Mon, 3 Feb 2003 11:13:20 -0500, "Gibson Nichols" <[log in to unmask]> wrote:
> Just thought I'd provide some insight on this.  We were suddenly aware that
> we couldn't connect using NS.  Then we found out that our remote sites had
> started an upgrade to the network which included the proposed precedence
> bit change (the CISCO router was updated per CISCO recommendation).
>
>
>
> "James Hofmeister" <[log in to unmask]> wrote in message
> news:3e3e79ab$1@skycache-news.fidnet.com...
> > Hello Folks,
> >
> > RE: SR 8606286850 -
> >     Enhancement: Implement RFC 2873 to prevent IP precedence change
> causing RESET
> >
> > The HP-e3k TCP/IP transport has been enhanced to support the
> > work-in-progress "proposed" RFC 2873 which recommends ignoring IP
> > precedence changes in the TCP/IP of the end host systems.
> >
> > This change supports the CISCO routers modification of the IP
> > precedence fields once a connection is established for what is known
> > by CISCO as a "QoS environment".
> >
> >
> > The hp-e3K as per "standard" RFC 793 completes the SYN/SYN-ACK/ACK
> > three-way handshake following the "standard" RFC 793 rules for
> > accepting a IP precedence change and replying with a modified IP
> > precedence in a SYN-ACK or ACK packet.  Once the three-way TCP/IP
> > handshake is complete, the hp-e3k follows the "proposed" RFC 2873
> > rules and ignores any further IP precedence change on the TCP/IP
> > connection.
> >
> > This enhancement to TCP/IP on the HP-e3k is currently only available
> > as a "Site Specific" patch for 7.0 as this is the only O.S. we have
> > customers committed to testing.  We will build a 7.5 patch with this
> > enhancement after successful testing on 7.0 or possibly earlier if we
> > have other customers request to test this enhancement.
> >
> > If you are interested in testing this enhancement, please contact the
> > HP-RC and request enhancement SR 8606286850 for "RFC 2873".
> >
> > Regards,
> >
> > James Hofmeister
> > Hewlett Packard - Global Solutions Engineering (WTEC)
> > P.S. My Ideals are my own, not necessarily my employers.
> >
> >
> >
> >
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> >
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> >
>
>

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