xen-users
Re: [Xen-users] Virtual network disconnect?
Hi Dirk :)
> a) in which direction does the download go (from domU to net, from net
to domU, from dom0 to net, ....)?
From domU to net. A service (here: webserver) offers files to download
(like a fileserver). If a user (like me at home) downloads the file the
breakdown happens.
> b) did you setup iptables manually or do you use something like
shorewall for that?
I set up them manually within a script like that:
$ipt -t nat -A PREROUTING -d $external_ip -p tcp --dport 80 -j DNAT --to
192.168.1.5
(packet-forwarding enabled)
> c) what exactly is script-nat?
I think XEN3's nat is like the network in XEN2. New to XEN3 is bridging and
routing, but i don't use them.
every domU has a vifx.y in dom0's address space and its own IP, but there
is automatically routing/natting between them.
> d) did you test if connection is reopened after some time (5 minutes,
one hour, etc.)?
No, I didn't. How to do that? Why should the connection reopens itself in a
natted net?
Thx for answering,
Hardy
At 08:58 19.04.2006, Dirk H. Schulz wrote:
Hi Hardy,
Hardy Wolf schrieb:
Hi,
I have a XEN 3.0.1 - Debian Sarge (Rootserver). There is a dom0 with
connection to the internet (WAN-IP) and a domU with a local IP
(192.168.x.y). The network is forwarded with iptables and script-nat.
All works fine until someone downloads a big file (last test ~100 MB).
Suddenly the connection is lost. By checking all circumstances I noticed
that XEN is no longer able to send packets to the domU. The connection
from virtual to the real network is broken.
How can I fix that?
Does anybody know that problem?
In XEN 2.0.7 I had that problem, too.
I think I have a similar setup with Xen 2.0.7, but not the same problem.
Just to make things clear:
a) in which direction does the download go (from domU to net, from net to
domU, from dom0 to net, ....)?
b) did you setup iptables manually or do you use something like shorewall
for that?
c) what exactly is script-nat?
d) did you test if connection is reopened after some time (5 minutes, one
hour, etc.)?
Dirk
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