Date: Fri, 10 Aug 2007 19:49:45 +0200 From: Bram Schoenmakers <bramschoenmakers@xs4all.nl> To: freebsd-questions@freebsd.org Cc: Nikos Vassiliadis <nvass@teledomenet.gr> Subject: Re: Problem with dump over SSH: Operation timed out Message-ID: <200708101949.45425.bramschoenmakers@xs4all.nl> In-Reply-To: <200708101103.07024.nvass@teledomenet.gr> References: <200708091025.43912.bramschoenmakers@xs4all.nl> <200708091851.14649.bramschoenmakers@xs4all.nl> <200708101103.07024.nvass@teledomenet.gr>
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Op vrijdag 10 augustus 2007, schreef u: Hi, > This really looks like a broken PMTU discovery. > > Is this still the case? After the firewall changes you did? > Things may be different now. But, if a router in the path > is filtering all ICMP traffic then the problem will remain. > > Try this on both hosts: > sysctl net.inet.tcp.path_mtu_discovery=0 > sysctl net.inet.tcp.mssdflt=1000 (just to be safe, > the default on 4.x is 1400, which can be big > on 6.x is just 512) > > Please, just use scp to do your testing. > When you rule out the possibility of a problematic > network, you will add the (gzip|bzip2) & dump parts. > > Nikos Thank you for those suggestions, it's appreciated. Although I get the same results with setting those values both on the server and on the client. SCP starts full speed, but at 20% of the 200 MB file it starts to stall. All ICMP traffic was open on both firewalls at that time. Hmmm.... Kind regards, -- Bram Schoenmakers What is mind? No matter. What is matter? Never mind. (Punch, 1855)
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