[Xen-users] Own network for domU, how to connect to dom0?

[Thomas Karsten <thomas@xxxxxxxxxxx>]

Dear all,

I would like to setup my domU's to be in an own network. But when I do this,
then I am unable to reach the domU's from dom0 and vice versa. However, I am
able to ping each domU from each domU. Here is the setup:

domU (eth0):   192.168.2.xxx/24
dom0 (eth0):   192.168.1.58/24
dom0 (dummy0): 192.168.2.1/24

(It works well, if the domU's are also in 192.168.1.0/24.)

From this point on I am not sure what I can do to let the system send all the
packets going to 192.168.2.0 to the proper interfaces (vifx.0). I tried to
add the dummy device to the bridge xenbr0, but it did not help:

# brctl show
bridge name        bridge id                STP enabled        interfaces
xenbr0             8000.a22af5b58606        no                 vif0.0
                                                               peth0
                                                               dummy0
                                                               vif9.0
                                                               vif10.0

I also tried to add the dummy0 device to the routing table, but without
success:

# route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.2.0     *               255.255.255.0   U     0      0        0 dummy0
192.168.1.0     *               255.255.255.0   U     0      0        0 eth0
default         192.168.1.1     0.0.0.0         UG    0      0        0 eth0

The configuration of each domU is as follows (the IP address is different for
each domU):

domU120# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.2.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0
0.0.0.0         192.168.2.1     0.0.0.0         UG    0      0        0 eth0

domU120# ifconfig eth0
eth0      Link encap:Ethernet  HWaddr 00:16:3E:1C:AB:FF  
          inet addr:192.168.2.120  Bcast:192.168.2.255  Mask:255.255.255.0
          inet6 addr: fe80::216:3eff:fe1c:abff/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:30 errors:0 dropped:0 overruns:0 frame:0
          TX packets:7 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:2323 (2.2 KiB)  TX bytes:510 (510.0 b)

How can I manage reaching dom0 from the domU's and vice versa? What am I
doing wrong in the configuration? Do I have to change the networking scripts
of Xen, and if so, which one and how?

Thank you very much,
Thomas

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users