Both server (debian etch) and client (knoppix 5.1 with downloaded and
compiled new version of udpcast) don't have firewalls. Maybe it is
something with kernel version (on both server and client)? I will try
udpcast boot cd...
Michael D. Setzer II pisze:
Just a follow up to the other reply you have already
gotten. If you have a firewall running on
the client and servers, you need to open both the 9006 port and the 9007 ports. Not sure
if
this would effect you. I was sending a file to many machine, and it also worked with one
client, but more, it didn't work. I think the transfer is done on the main port, but
the clients talk
back to the sender machine via the next port. I also had the same switch problem, but
using
udpcast boot cds don't have the firewall, but the Fedora systems do.
On 23 Sep 2008 at 22:05, Paweł Ufnalewski // BSS wrote:
Date sent: Tue, 23 Sep 2008 22:05:25 +0200
From: Pawe³ Ufnalewski // BSS <archon(a)pjwstk.edu.pl>
To: udpcast(a)udpcast.linux.lu
Subject: [Udpcast] multi computer cast problem
Hello,
I've got problem with multicasting to many computers at once. I've
got server with newest udp-sender (20071228) which is sending files from
ext3 partition (with command ./udp-sender --pipe 'tar -B -S -cpf - -C
/usr/share/systemimager/boot/i386/pjwstklenny .' --portbase 9006
--min-clients 2 --min-wait 15 --interface eth1 --max-bitrate 70M
--mcast-all-addr 234.1.1.162 --ttl 10
and I'm trying to receive it with command:
./udp-receiver --portbase 9006 --nosync --ttl 10 --mcast-rdv-address
234.1.1.162 --pipe "tar -f - -x -vv -C /disk"
on client computer.
Problem is that, when I'm doing it one-by-one (I mean server-1 client) I
get full speed - ~70MB/s, but when I'm trying to to this with >= 2
computers transfer drops to >0,5Mb/s. Why? I tried diffrent and the same
subnet, I'm using 3com & cisco 3-layer switches (I also tried putting
server and clients on the same switch - the same effect).
Please help, cause I've got >200 computers to clone ;)
Best regards
Paul Ufnalewski // BSS
Polish Japanese Institute of Information Technology
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