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From: =?iso-8859-1?B?Sm+i?= <jbfixurpc@gmail.com> To: "'nanog list'" <nanog@nanog.org> Date: Wed, 29 Apr 2009 18:04:51 -0400 In-Reply-To: <9A34A79C-D973-4130-8010-0E98ECAD84F6@daork.net> Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org Greetings all I have a customer running with a Cisco 5500 series firewall. What were seeing (as a problem) is that there is a bit being flipped by the = firewall in the packet header. The bit in question is the Congession Window = Reduced or CWR bit. Under heavy load the target server is getting this bit as = high and since (I am guessing) its that way dropping the session yet its not = near capacity. It=92s a Microsoft server as well. Not that I am knocking that = but. Under the same situation a Linux/Apache server doesn't seem to care, and goes about its business. Anyone heard of this? I did searches regarding = this but found (as per usual) tons of usless info. I'm not sure why the = packets are being changed by the ASA. I know there not hitting the firewall this = way (Packet capture) but they are getting changed. Config mishap? Is the ASA throttling down stuff, and if so why not at the requesting party?=20 Dunno. Completely baffled. Thanks In Advance! -Joe
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