Syslinux - Nov 2013 - syslinux.efi pxeboot across multiple subnets

Sorry. Here are the tcpdumps on pastebin:

Filtered by IP taken on tftp server: http://pastebin.com/NgesF5p9

Taken from mirrored port: http://pastebin.com/kuw22GF2


On Tue, Nov 5, 2013 at 12:21 PM, Geert Stappers <stappers at
stappers.nl>wrote:
> Op 2013-11-04 om 20:26 schreef Jason Matthews:
> > The same client was used for syslinux.efi (both success on same subnet
> and
> > failure on different subnet) and grub.efi. The DHCP host block is
setup
> > like:
> >
> > host testing {
> >     hardware ethernet {mac} ;
> >     next-server 10.16.195.178 ;
> >     filename "rhel64/syslinux.efi" ;
> > }
> >
> > I'll pull a tcpdump filtering by the IP tomorrow when I get back
to the
> > systems.
> >
>
> Jason did that.
> However the E-mail is to big to get through the mailinglist.
>
> To get more eye balls on the tcpdump,
> it has to be published elsewhere.
>
>
> Regards
> Geert Stappers
> in his role as moderator for the Syslinux mailinglist.
> --
> To: For discussion of Syslinux and tftp-hpa <syslinux at zytor.com>
>                                                 Subject: Re: [syslinux]
> syslinux.efi pxeboot across multiple subnets
> Message-ID: <CAF+RMG+b+X-Ge_eP+MTYuoYanDp+FZXwYqgVp8uEDZ=_
> 1EfdnA at mail.gmail.com>
>
> Here is a tcpdump from a mirrored port on the test client followed by a
> tcpdump from the tftp server filtered by IP taken at the same time. I
>                                                replaced the syslinux.efi
> and ldlinux.e64 files with a fresh copy from the
> syslinux-6.02.zip to verify I wasn't still using 6.01 by mistake.
Please
>                                               let me know if any more
> information would be helpful. Thanks all your help.
>
> mirrored-port# tcpdump -i eth0 -vv
> 09:52:52.687565 IP6 (hlim 1, next-header OSPF (89) payload length: 36)
> fe80::a17:f4ff:fe62:631f > ff02::5: OSPFv3-hello 36: rtrid 2.2.2.2
backbone
> V6/E/R ifid 0.0.0.32 pri 1 int 10 dead 40 dr 2.2.2.2 nbrs
> 09:52:58.795974 IP (tos 0xc0, ttl 1, id 57703, offset 0, flags [none],
> proto OSPF (89), length 64) 10.16.233.1 > 224.0.0.5: OSPFv2, Hello,
> length: 44
> <snip/>
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2013/11/5, Jason Matthews <jason.david.matthews at
gmail.com>:
> Sorry. Here are the tcpdumps on pastebin:
>
> Filtered by IP taken on tftp server: http://pastebin.com/NgesF5p9
>
> Taken from mirrored port: http://pastebin.com/kuw22GF2
>
>
It looks like your tftp server serves only packets of length 512 or so
instead of the 1468 bytes blocksize requested.
I observed this same behavior with the debian package tftpd. I had
troubles with it for making pxe work. I'd suggest you to try atftpd or
tftpd-hpa. If this doesn't solve your problem, it will at least make
the downloads a lot faster. :)

I'm using tftp-hpa. I had disabled the blocksize option (-r blocksize) for
some reason that I can't remember now. Re-enabling it and setting to 1468
gives the same results. Considering I'm using http to transfer the kernels,
initrd and images, I don't think the slowness will be an problem. Thanks
for the suggestions though.


On Tue, Nov 5, 2013 at 8:20 PM, Celelibi <celelibi at gmail.com> wrote:
> 2013/11/5, Jason Matthews <jason.david.matthews at gmail.com>:
> > Sorry. Here are the tcpdumps on pastebin:
> >
> > Filtered by IP taken on tftp server: http://pastebin.com/NgesF5p9
> >
> > Taken from mirrored port: http://pastebin.com/kuw22GF2
> >
> >
>
> It looks like your tftp server serves only packets of length 512 or so
> instead of the 1468 bytes blocksize requested.
> I observed this same behavior with the debian package tftpd. I had
> troubles with it for making pxe work. I'd suggest you to try atftpd or
> tftpd-hpa. If this doesn't solve your problem, it will at least make
> the downloads a lot faster. :)
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>