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Tftp server problem...

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bulli...

Posted: Thu Jun 26, 2008 4:41 am

Guest

hi Experts,
I am facing some problem with tftp-server in Redhat linux
Actually we used this tftp server for IOS image coping in to routers
the problem is
actually we installed tftp-server-0.40-1 package on my Redhat linux
server
and edited /etc/xinetd.d/tftp as below

service tftp
{
socket_type = dgram
protocol = udp
wait = yes
user = root
server = /usr/sbin/in.tftpd
server_args = -u root -c -U 111 -s /tftp/
disable = no
per_source = 11
cps = 100 2
flags = IPv4
}

so our tftp server uses /tftp/ as default/public folder for our TFTP
server
and we kept our images in that /tfpt server and started the xinetd
service
then i loged in to router and when we started copying the image middle
its stoping the coping

R7348-PRE4#copy tftp: disk0:
Address or name of remote host []? 73.48.0.1
Source filename []? /tftp/images/test
Destination filename [test]?
Accessing tftp://73.48.0.1//tftp/images/test...
Loading /tftp/images/test from 73.48.0.1 (via
FastEthernet0/0/0): !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!...
[timed out]

%Error reading tftp://73.48.0.1//tftp/images/test (Timed out)

This is the problem we are facing
actually i tried for different images
the files/images which are less than 32MB is coping properly with out
any problem
the files/images which are more than 32MB are not able to copy and
giving timed out error
so i did some googling and found that some older version TFTP servers
will not support with a file size more than 32MB

"The original protocol has a file size limit of 32 MB,
although this was extended when RFC 2347 introduced option
negotiation,
which was used in RFC 2348 to introduce block-size negotiation in
1998
(allowing a maximum of 4 GB and potentially higher throughput).
If the server and client support block number wraparound, file size is
essentially unlimited."

but what the software we use, it will support up to 192MB
here we got strucked :(

here my question is.. Is there any file to see what is the tftp limit
in my server
or can any one give a solution for this one how to copy files which
are more then 32MB?

Thanks in advance
Surendra

Aragorn...

Posted: Thu Jun 26, 2008 11:17 am

Guest

On Thursday 26 June 2008 16:41, someone who identifies as *bulli* wrote
in /alt.os.linux.mandrake:/

Quote:

You are asking a question about RedHat Linux in a Mandrake/Mandriva
newsgroup...

Considering that RedHat is quite conservative with regard to certain
software - and certainly far more conservative than Mandrake/Mandriva - I
believe it to be not unlikely that the 32 MB filesize limit still applies
in your version of RedHat.

Just my two Eurocents worth, of course. I have no experience whatsoever
with /tftp/ and this is after all a Mandrake/Mandriva group. This
newsgroup basically only still exists for the sake of those people whose
newsfeed doesn't carry the Mandriva group yet. (As you may or may not
know, MandrakeSoft has merged with Conectiva and the newly resulting
company is thus now called Mandriva.)

In addition, I would like to point out that you'd have more chances of
getting a helpful reply if you were to use a real newsreader instead of
Google Groups. This is after all Usenet, not a forum on Google Groups.

Google archives Usenet and offers a (badly broken) way to post to Usenet via
their Google Groups website. They also fail to mention that they do not
own or run Usenet, leaving their users clueless.

Usenet has already existed from back at a time long before the internet was
even still called DARPAnet and back then it ran off of BBS machines.
Usenet comprises of many, many, many individual servers who are all more or
less in sync with eachother, and of which some may carry newsgroups which
do not exist on others.

Many ISPs offer Usenet access via a mirror of their own, or via outsourcing
to specialized news services. However, due to the great number of trolls,
spammer and paedophiles, most US-based ISPs are dropping support for
Usenet, or at the very least for the binary newsgroups where such offending
pictures may be found. Still there are free newsservers or newsservers one
can subscribe to for a small fee.

As a result of the general cluelessness from Google Groups users, as well as
the fact that most Usenet spam originates from Google Groups, many regulars
on Usenet simply block all posts made from Google Groups from getting
through their newsfeed, and some newsservers even block Google Groups posts
alltogether.

As such, subscribing to a real newsserver and using a real newsreader - for
UNIX-like systems, there are Mozilla Thunderbird, KMail, Evolution, Gnus,
slrn, Pan and many others - you would stand a far better chance at getting
a usable reply from someone more knowledgeable about /tftp/ or RedHat than
myself.

And by the same token - and with all due respect - you would probably then
also not be so clueless as to post a RedHat-related question to a Mandriva
newsgroup. ;-)

Hope this was helpful. Please heed my advice; I guarantee that you won't
regret it. ;-)

--
*Aragorn*
(registered GNU/Linux user #223157)

Moe Trin...

Posted: Fri Jun 27, 2008 8:38 pm

Guest

On Thu, 26 Jun 2008, in the Usenet newsgroup alt.os.linux.mandrake, in article
<KhP8k.110603$Nn.81590 at (no spam) newsfe09.ams2>, Aragorn wrote:

Quote:

On Thursday 26 June 2008 16:41, someone who identifies as *bulli* wrote
in /alt.os.linux.mandrake:/

hi Experts,
I am facing some problem with tftp-server in Redhat linux

You are asking a question about RedHat Linux in a Mandrake/Mandriva
newsgroup...

Actually, the clueless idiot also posted the same crap to

alt.comp.linux
alt.os.linux
alt.os.linux.suse
comp.mail.sendmail
comp.os.linux.hardware
comp.os.linux.misc
comp.os.linux.networking
comp.os.linux.x
comp.unix.admin
linux.redhat
uk.comp.os.linux

and maybe more - the posts originated at groups.google.com, and I (like
many others) filter off such posts just because of spam like this. It
looks like the typical drive-by spam run. Fix your news filter.

Old guy

Aragorn...

Posted: Fri Jun 27, 2008 11:34 pm

Guest

On Saturday 28 June 2008 03:38, someone who identifies as *Moe Trin* wrote
in /alt.os.linux.mandrake:/

Quote:

On Thu, 26 Jun 2008, in the Usenet newsgroup alt.os.linux.mandrake, in
article <KhP8k.110603$Nn.81590 at (no spam) newsfe09.ams2>, Aragorn wrote:

On Thursday 26 June 2008 16:41, someone who identifies as *bulli* wrote
in /alt.os.linux.mandrake:/

hi Experts,
I am facing some problem with tftp-server in Redhat linux

You are asking a question about RedHat Linux in a Mandrake/Mandriva
newsgroup...

Actually, the clueless idiot also posted the same crap to

alt.comp.linux
alt.os.linux

/Could/ be considered fairly on-topic in the above two groups...

Quote:

alt.os.linux.suse
comp.mail.sendmail
comp.os.linux.hardware

Yep, I'm in the latter one too and I've noticed... Yet another group where
his question is off-topic. ;-)

Quote:

comp.os.linux.misc
comp.os.linux.networking
comp.os.linux.x
comp.unix.admin
linux.redhat

Now *that* last one might actually yield him an answer. :-)

Quote:

uk.comp.os.linux

and maybe more - the posts originated at groups.google.com, and I (like
many others) filter off such posts just because of spam like this. It
looks like the typical drive-by spam run.

I don't consider this to be spam, though. Spam is advertising, and the guy
was asking a technical question about a particular and undefined versino
of /tftp/ in a particular and undefined version of RedHat.

I believe that his question deserves an answer, but in and from the proper
newsgroup, not in any off-topic groups. So it's rather a matter of plain
stupidity - which makes me wonder how he ever got to know GNU/Linux in the
first place, let alone install it - rather than of spamming.

Quote:

Fix your news filter.

I'm seriously beginning to ponder the idea... :p I've tried being polite
with this guy, but given your report on the multiposting, the level of his
stupidity seems beyond any remedy... ;-)

This is probably one of those guys who always buys shoes without laces so he
wouldn't have to tie them in the morning (by lack of understanding how to
make a knot, of course!)... :p

--
*Aragorn*
(registered GNU/Linux user #223157)

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