Yes. Nothing out of the ordinary. I'm seeing packets being sent at 1460 and returned at 1448 - both under my interface's MTU of 1500. I even tried with MTU sizes down to 500 at the firewall. No luck. The TCPDUMP actually looks just like our development firewall's TCPDUMP in the office - and development works fine. So I'm lost. The routers in question are Dell 350's ... PIII-850s with 256Mb RAM with Intel Pro100 NICS, plus one has a 4-port Znyx card (tulip drivers). Page data (just the HTML text) is returned within 1-2 seconds in development or on an outer production router, 8-10 seconds within production. That's a considerable difference. Leaving firewalling out of it, if you were to setup a Linux router to simply bridge two subnets, after assigning the correct IPs to the interfaces, setting the default gateway to the enterprise router of the ISP, and # echo 1 > /proc/sys/net/ipv4/ip_forward what needs to be done? Ken -----Original Message----- From: Stef Coene [mailto:stef.coene@docum.org] Sent: Friday, October 25, 2002 1:22 PM To: Ken Price; lartc@mailman.ds9a.nl Subject: Re: MTU problem with simple router? On Friday 25 October 2002 18:53, Ken Price wrote: > All of our public IPs are reverse mapped. The initial connection to the > site is fast. The delay happens when data starts comming back. A way to > visualize this problem is using a browser. You hit "Go" and the target > site immediately returns text, but like a low-bandwidth or overloaded site, > graphics trickle back. This problem is not limited to a single site ... > it's all of them. And isn't limited to a single router, I have two > different production evironments setup with different loadbalancer/firewall > combos. What they both have in common is the RedHat router doing simple > forwarding. One in each environments. Stange. Have you tried to dump the packets with tcpdump so you can analyse what happens ? Stef -- stef.coene@docum.org "Using Linux as bandwidth manager" http://www.docum.org/ #lartc @ irc.oftc.net _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
