The windows guest can also ping dom0 but again, can’t ping the gateway or anything else other than Dom0’s IP. I can only get vnc to the windows machine and as such can’t copy/paste the output from ipconfig /all
but it is all correct, static IP 195.2.139.196 / 255.255.255.0 / gateway 195.2.139.1 and our public recursor dns servers 195.2.130.8 / 200, should I check for something in particular?
Here’s how dom0 is configured;
# The loopback interface
auto lo
iface lo inet loopback
# Bridge Static Configuration
# (network, broadcast and gateway are optional)
auto xenbr0
iface xenbr0 inet static
bridge_ports eth1
address 195.2.139.4
broadcast 195.2.139.255
netmask 255.255.255.0
network 195.2.139.0
gateway 195.2.139.1
#Eth0 Static Configuration
auto eth0
iface eth0 inet static
address 192.168.2.4
netmask 255.255.255.0
Eth1 is the public port on the WAN and Eth0 is just our back-end admin lan so you can ignore that. Dom0 works great, I can ping our and resolve DNS, ssh in from my office, all good. The DomU’s just aren’t picking
up the default gateway by the looks of it but CAN ping and reply to Dom0’s IP 195.2.139.4
When I try and ping the gateway 195.2.139.1 from the debian vm I get
From 195.2.139.170 icmp_seq=684 Destination Host Unreachable
195.2.139.170 is the static Ip given to the debian vm;
root@test-pv:~# ifconfig
eth0 Link encap:Ethernet HWaddr 00:16:3e:14:d8:42
inet addr:195.2.139.170 Bcast:195.2.139.255 Mask:255.255.255.0
inet6 addr: fe80::216:3eff:fe14:d842/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:3126 errors:0 dropped:0 overruns:0 frame:0
TX packets:902 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:171271 (167.2 KiB) TX bytes:85980 (83.9 KiB)
Interrupt:17
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:6 errors:0 dropped:0 overruns:0 frame:0
TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:672 (672.0 B) TX bytes:672 (672.0 B)
Here’s some stuff from /var/log/messages so the bridge seems ok;
May 20 13:28:29 xen-1 kernel: [ 8367.944038] xenbr0: port 2(vif16.0) entering forwarding state
May 20 13:29:06 xen-1 kernel: [ 8403.989601] xenbr0: port 2(vif16.0) entering disabled state
May 20 13:29:06 xen-1 kernel: [ 8404.017006] xenbr0: port 2(vif16.0) entering disabled state
May 20 13:29:32 xen-1 kernel: [ 8430.910729] device vif17.0 entered promiscuous mode
May 20 13:29:32 xen-1 kernel: [ 8430.920869] xenbr0: port 2(vif17.0) entering learning state
May 20 13:29:33 xen-1 kernel: [ 8431.866548] blkback: ring-ref 8, event-channel 13, protocol 1 (x86_64-abi)
May 20 13:29:33 xen-1 kernel: [ 8431.894288] blkback: ring-ref 9, event-channel 14, protocol 1 (x86_64-abi)
May 20 13:29:47 xen-1 kernel: [ 8445.916079] xenbr0: port 2(vif17.0) entering forwarding state
From:
Jan Hejl [mailto:jh@xxxxxxxxxx]
Sent: 20 May 2013 13:35
To: Simon Jones
Cc: xen-users@xxxxxxxxxxxxx
Subject: Re: [Xen-users] xenbr0 / domU static IPs
Thanks. So Debian domU works, that's good to know.
Can you please post "ipconfig /all" from Windows 8 domU? Can you also please check your logs (/var/log/xen/qemu-..., dmesg, syslog, windows event viewer) for errors?
Dne 20.5.2013 14:23, Simon Jones napsal(a):
ID 7 is a debian test vm I set up, I just reconfigured the networking on it and rebooted, now this one can ping dom0 static IP and receives a reply. No reply when I try and ping the other windows guest, also
get a reply when pinging the default gateway, all are on the same network.
root@test-pv:~# ifconfig
eth0 Link encap:Ethernet HWaddr 00:16:3e:14:d8:42
inet addr:195.2.139.213 Bcast:195.2.139.255 Mask:255.255.255.0
inet6 addr: fe80::216:3eff:fe14:d842/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:545 errors:0 dropped:0 overruns:0 frame:0
TX packets:36 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:29480 (28.7 KiB) TX bytes:3016 (2.9 KiB)
Interrupt:17
I suppose domU ID you described is 7, isn't it? Is the other domU - id 14 - able to reach the dom0 with ping?
Dne 20.5.2013 14:09, Simon Jones napsal(a):
Hi Jan,
Thanks – I should have included that but here you go;
bridge name bridge id STP enabled interfaces
xenbr0 8000.00e081465f38 no eth1
tap14.0
vif14.0
vif7.0
Hi Simon,
what does "brctl show" show? It should show xenbr0 and some vifX.Y (which is domU interface) device.
Jan
Dne 20.5.2013 13:36, Simon Jones napsal(a):
Hi, I have a new xen hosting platform. I have given the bridge a static IP which I can ping/ssh to etc, when I create a new vm all works well apart from the networking. If I give DomU a static IP I can’t ping out from the box, Dom0 can’t
ping the vm. I’m suspecting it just isn’t seeing the bridge but am unsure where to start looking. This is a very standard setup, 1 bridge: xenbr0
Here’s a config file for a windows guest but I get the same with windows or debian guests.
cat windows8.cfg
kernel = "/usr/lib/xen-4.0/boot/hvmloader"
builder='hvm'
memory = 4096
vcpus=1
name = "Windows8"
vif = ['bridge=xenbr0']
disk = ['phy:/dev/vg0/windows8,hda,w','file:/usr/src/windows8_x64.iso,hdc:cdrom,r']
acpi = 1
device_model = 'qemu-dm'
boot="d"
sdl=0
serial='pty'
vnc=1
vnclisten="0.0.0.0"
vncpasswd=""
usbdevice='tablet'
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