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Full Discussion: source quelch
Special Forums IP Networking source quelch Post 57350 by AbEnd on Saturday 23rd of October 2004 09:27:43 PM
Old 10-23-2004
http://en.wikipedia.org/wiki/ICMP_Source_Quench

AFAIK, a lot of OSes ignore them and they are often filtered by firewalls. Most TCPs have their own congestion control mechanisms so ICMP source quench is not used a lot.

If your HP-UX sends them and your WinNT uses them.. I would try to filter them on the NT box; cause NT might be overreacting.

That might not solve the problem but at least you would know the slowness is not caused by ICMP alone. HP-UX could be sending them as part of a more general slowdown mechanism (ex, it could be reducing the TCP window and dropping some packets too).
 

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FAXANSWER(8)						      System Manager's Manual						      FAXANSWER(8)

NAME
faxanswer - tell a HylaFAX server to answer the telephone SYNOPSIS
/usr/sbin/faxanswer [ -q queue-dir ] [ -h how ] modem DESCRIPTION
faxanswer sends a message to the HylaFAX faxgetty(8) process servicing modem telling it to answer the telephone. This is useful, for exam- ple, when a modem is used on a shared phone line and the server is configured to not normally answer the phone. The specified modem can either be the name (typically the last component of the terminal port the modem is attached to), or the full name of the associated FIFO named pipe file, e.g. ``FIFO.ttym2''. OPTIONS
-q dir Use a spooling area other than /var/spool/hylafax. -h Specify exactly how the phone should be answered. By default, the server process is instructed to answer the phone and accept any kind of call (voice, data, fax). Discrimination of the type of call is dependent on a modem's adaptive-answer support. The -h option can be used to force the server to answer the phone for particular type of call: one of fax, data, voice, any, extern (to force faxgetty to invoke an external application to to handle the call), or dialX (where X is a dialstring to dial before initiating a fax reception). If using dialX, the specified dialstring will likely need to end with a semicolon (``;''). FILES
/var/spool/hylafax default spooling area /var/spool/hylafax/FIFO fifo for contacting faxq Consult hylafax-server(5) for a complete discussion of the structure and content of the spooling area. SEE ALSO
hylafax-server(5), faxgetty(8) May 23, 1996 FAXANSWER(8)
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