Date: Tue, 24 Jul 2012 06:07:36 -0400 From: Robert Blayzor <rblayzor.bulk@inoc.net> To: freebsd-stable@freebsd.org Subject: Re: pxeboot with jumbo frame network Message-ID: <5988D182-E3AA-4F38-BD33-15728D52230F@inoc.net> In-Reply-To: <500D90C5.2020208@rpi.edu> References: <F3A14C6D-C1AC-476B-813C-114E9B3EAEE9@inoc.net> <500D90C5.2020208@rpi.edu>
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On Jul 23, 2012, at 1:58 PM, Bob Healey wrote: > I know I have this working, however I don't remember what I did. I = know I can pxeboot and install RHEL on a 9K frame network from a FreeBSD = tftp server/NAT gateway. I do know the first thing in my RHEL install = script is to set the MTU to 9K. > If I have a chance later today, I'll dig into one of my install = servers and try to figure out what options I used with DHCP to get it = working. The trick is setting the boot time options on the client. The server = side (TFTP server) is the easy part as it's already setup and running. = But if the client boots and it's not jumbo frame enabled, TFTP will = surely hang on getting the PXEboot as the server will be trying to send = 9K UDP frames to a client that's probably defaulted to 1500. If there is a DHCP option to set the client MTU, I've not found it = anywhere. --=20 Robert Blayzor INOC, LLC rblayzor@inoc.net http://www.inoc.net/~rblayzor/
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