This was working and now it has stopped.
Have a UDPcast server running on a HP DL360G5 with 4 NICS. One
connected to an internal infrastructure (eth2) and another connected
to a dedicated switch with the client systems on the same switch (eth3).
When i run the UDPcast send or receive, using the following command:
udp-sender -f /home/base.udpc --interface eth3 --point-to-point --full-
duplex --max-bitrate 600m --nokbd --portbase=9922 --min-receivers 1 --
rexmit-hello-interval 5000 --max-wait 300
I get the following error message:
No suitable network interface found
The following interfaces are available:
Interestingly, an ifconfig show eth3 as a valid network adapter, but
the udp-sender does not see the device. This was working last week,
and nothing has changed on the server
I have tried everything, restarting DHCP, removing the interface and
adding again. Rebooted the server, restarted the network stack
manually. nothing seems to help.
Using SUSE linux 10 as the base server OS.
I'd like to use udp-sender with async and a unicast address instead of
multicast so that unicast at the MAC layer is actually used.
Ive tried using the pointopoint switch, but I get the message "pointopoint
mode set, and 0 participants instead of 1".
Is there a way to do this with udpcast?
I've been using UDP Cast extensively for a while now and I love it, but I
had an issue last week and I want to share it witou you.
The UDP Cast website provides handy ready-made boot images. Apparently,
those images are compiled for i686 and I couldn't make them work on an
older machine because the processor doesn't implement the CMOV operation.
The problem seem to belong to GCC, because it thinks that every i686
processor implements the optional CMOV operation, which is not true.
I solved the problem by compiling my own UDP Cast kernel, but I suggest
that the next UDP Cast ready-made boot images drop the i686 requirement
and stick to i386, for compatibility reasons.
Is this a reasonable request?
Thank you and best regards,
Engenharia Informatica e de Computadores - Instituto Superior Tecnico
udpcast-request(a)udpcast.linux.lu a écrit :
> 1. Re: INSTALL UDPCAST IN A PARTITION (Henrique Rodrigues)
> 2. Re: INSTALL UDPCAST IN A PARTITION (Alain Knaff)
> Henrique Rodrigues wrote:
>> On Tue, March 24, 2009 07:09, Silvio Bandeira wrote:
>>> Can we install an udpcast image, so I can boot udpcast in many machines
>>> using a local image, instead of booting from CD/PXE ?
> Why not load udpcast directly rather than play russian dolls by pretending
> to boot a floppy?
> Just point GRUB's kernel and initrd parameters _directly_ to the kernel and
> udpcast ramdisk:
> title UDPcast
> root (hd0,3)
> kernel /linux
> initrd /initrd
> Where vmlinux.bin is the kernel (as downloaded from
> http://udpcast.linux.lu/current/linux) and initrd is the udpcast ram disk
> (as downloaded from http://udpcast.linux.lu/current/initrd)
Thank you so much, it is so easy this way!
Just a problem: I thought I could get a preconfiguration by putting a
udpcfg.txt file along with linux and initrd, but it doesn't work,
I still get the menu at boot. What is wrong?
Can we install an udpcast image, so I can boot udpcast in many machines
using a local image, instead of booting from CD/PXE ?
Thanks in advance.
Please reply to this address, i'm not on the list (I will be if I have to :)
I have problems restoring image with Clonezilla which uses udpcast.
Since it seems that it's problem in udpcast I'm sending description of
the problem here.
Whole discussion you can find here
And here is explanation of problem and messages that I receive on CLI
and in log files.
I create image of MS Win XP and I save it to server. Then I boot clients
with PXE and they start Clonezilla. After that Clonezilla server should
start sending multicast (or brodcast, whichever I choose in
3:14 minutes after that I get this message on CLI
apt-cache search/opt/drbl/sbin/ocs-functions: line 3537: 27660 Exit 141
( for img in $imagedir/$target_d/$img_file_prefix;
27662 Floating point exception| $udpcast_send_cmd 2> $udpcast_stderr
And in /var/log/messages I have
Feb 27 08:26:37 server udpcast: New connection from 192.168.1.104
Feb 27 08:26:37 server udpcast: first connection: min wait
secs - max wait - min clients
Feb 27 08:26:47 server udpcast: New connection from 192.168.1.103
Feb 27 08:27:10 server udpcast: New connection from 192.168.1.105
Feb 27 08:27:20 server udpcast: New connection from 192.168.1.106
Feb 27 08:27:22 server udpcast: min receivers reached: starting
Feb 27 08:27:22 server udpcast: Starting transfer: file pipe
port if[eth1] participants
Feb 27 08:30:36 server udpcast: dropped client #0 because of timeout
Feb 27 08:30:36 server udpcast: Disconnecting #0 (192.168.1.104)
Feb 27 08:30:36 server udpcast: dropped client #1 because of timeout
Feb 27 08:30:36 server udpcast: Disconnecting #1 (192.168.1.103)
Feb 27 08:30:36 server udpcast: dropped client #2 because of timeout
Feb 27 08:30:36 server udpcast: Disconnecting #2 (192.168.1.105)
Feb 27 08:30:36 server udpcast: dropped client #3 because of timeout
Feb 27 08:30:36 server udpcast: Disconnecting #3 (192.168.1.106)
I have tried to restore two images and they both end the same way (3:14
min and same message). And I can restore that image with unicast, so
it's not image problem.
I have tried both multicast and brodcast method, and non of them works,
so I guess it's not switch issue.
All clients and server are connected on one switch.
Please confirm me that I'm having problems with unicast.
Please help me to troubleshoot this problem.
I'm using Ubuntu 8.10 server and udpcast version is 20081213
Google talk: parcina80
I'm using udp-sender to send an announce package and using udp-receiver
inside of a C program in loop who stays checking for new announce packages.
The announce package has no more then 1.5K
The problem is, after some interactions, udp-receiver lock and stay quiet
waiting for close the connection by sender, but the announce is complete
inside the system.
So, my question is, can I put a timeout in udp-receiver to close this
connection if some defined time pass away?
Diego de Carvalho Zimmermann
Phone: +55(41) 8836-8972
"Be Free, use Linux"