[Xen-users] Network Problems

[Christian Bleicher <c.bleicher@xxxxxxxxxxxx>]

Hi,

I'm new to XEN and have the following Problem:
If I shutdown my domU the network of the dom0 leaks. A ping from another
server to my xen dom0 shows a Packetloss > 80%. Then if I restart the
domU after some seconds the ping show a loss from 0%. I retryed that 3
times but it is really hard to go to the dom0 via ssh and recreate the
domU if the packetloss is that high.

I used google to search for that Problem, but couldn't find a really
matching result. Probably its a mistakte in the xen configuration, or a
bug in my xen version. I use a debian lenny dom0 with a debian lenny
dom0. The Network setup is brige. There are two domU on the system. My
dom0 is Kernel initrd.img-2.6.26-2-xen-amd64.

I installed xen via aptitude and my network/interfaces looks like:
# device: eth0
auto  eth0
iface eth0 inet static
  address   178.63.95.204
  broadcast 178.63.95.255
  netmask   255.255.255.192
  gateway   178.63.95.193
#  post-up /sbin/ifconfig eth0 inet6 add 2a01:4f8:121:4302:0:0:0:1/64
#  pre-down /sbin/ifconfig eth0 inet6 del 2a01:4f8:121:4302:0:0:0:1/64

# default route to access subnet
# up route add -net 178.63.95.192 netmask 255.255.255.192 gw
178.63.95.193 eth0
up route add -host 178.63.95.230 gw 178.63.95.230
up route add -host 178.63.95.233 gw 178.63.95.233
up route add -host 178.63.95.232 gw 178.63.95.232


xm info:
serv01:~# xm info
host                   : serv01.xxx.de
release                : 2.6.26-2-xen-amd64
version                : #1 SMP Tue Aug 31 11:17:26 UTC 2010
machine                : x86_64
nr_cpus                : 8
nr_nodes               : 1
cores_per_socket       : 4
threads_per_core       : 2
cpu_mhz                : 2673
hw_caps                :
bfebfbff:28100800:00000000:00000140:0098e3bd:00000000:00000001
total_memory           : 8183
free_memory            : 3440
node_to_cpu            : node0:0-7
xen_major              : 3
xen_minor              : 2
xen_extra              : -1
xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32
hvm-3.0-x86_32p hvm-3.0-x86_64 
xen_scheduler          : credit
xen_pagesize           : 4096
platform_params        : virt_start=0xffff800000000000
xen_changeset          : unavailable
cc_compiler            : gcc version 4.3.1 (Debian 4.3.1-2) 
cc_compile_by          : waldi
cc_compile_domain      : debian.org
cc_compile_date        : Sat Jun 28 09:32:18 UTC 2008
xend_config_format     : 4


Had someone else that Problem, too? Do you need more information?

Thank you in advance. 

-- 

Regards
Christian










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