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xen-users
Re: [Xen-users] Help me to set up network (routes)
Alan,
I haven't set up routed networking, but I would say the problem is that
the gateway on the Windows DomU is 10.9.3.1, which it doesn't know how
to get to. I would suggest to changing it to 10.0.2.254 which is on the
same subnet as the DomU's network interface, the traffic should then
come out via vif2.0 and be handled by Dom0.
Jeff Williams
wherethebitsroam.com
On 07/05/09 03:57, AlannY wrote:
Hi there, I'm Alan.
2nd day I'm trying to set up network in Xen. Firstly, I set up it via
bridges and it have worked in some success ;-) But bridges is not what
I want.
So, I decide to reconstruct network with routes. I set up everything
as many tutorials said, but nothing happens: I can't ping domU from
host and can't ping dom0 from guest ;-(
So, below, I will show what I'm doing, I would like to hear what I'm
doing wrong.
Thanks for your patience.
================
Dom0 have one (1) working net card: eth0
with IP for external LAN: 10.9.3.92
and gateway for with IP: 10.9.3.1
---------
My xend-config.sxp have:
(network-script network-route)
(vif-script vif-route)
---------
%# cat /proc/sys/net/ipv4/conf/all/proxy_arp
1
%# cat /proc/sys/net/ipv4/conf/eth0/proxy_arp
1
%# cat /proc/sys/net/ipv4/ip_forward
1
---------
In my %.vm (Virtual Machine) file I have:
vif = [ 'ip=10.0.2.2' ]
--------
In my DomU (Windows in my case) I set up network interface as follow:
address 10.0.2.2
netmask 255.255.255.0
gateway 10.9.3.1 # it's a gateway which gave me ISP (see above)
========
After "xm create ...":
--------
%# ip r
[...]
10.0.2.2 dev vif2.0 scope link src 10.9.3.92
[...]
-------
%# ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:e0:4c:a0:b0:20
inet addr:10.9.3.92 Bcast:10.9.3.255 Mask:255.255.255.0
inet6 addr: fe80::2e0:4cff:fea0:b020/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2158921 errors:1 dropped:78 overruns:1 frame:0
TX packets:1918655 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2215803222 (2.0 GiB) TX bytes:1294017960 (1.2 GiB)
Interrupt:17 Base address:0xd000
[...]
tap2.0 Link encap:Ethernet HWaddr 4e:69:00:fd:f0:48
inet6 addr: fe80::4c69:ff:fefd:f048/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:26 errors:0 dropped:0 overruns:0 frame:0
TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:2343 (2.2 KiB) TX bytes:468 (468.0 B)
vif2.0 Link encap:Ethernet HWaddr fe:ff:ff:ff:ff:ff
inet addr:10.9.3.92 Bcast:10.255.255.255 Mask:255.255.255.255
inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:6 overruns:0 carrier:0
collisions:0 txqueuelen:32
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
--------
%# route -n
[...]
10.0.2.2 0.0.0.0 255.255.255.255 UH 0 0
0 vif2.0
[...]
10.9.3.0 0.0.0.0 255.255.255.0 U 0 0
0 eth0
[...]
0.0.0.0 172.16.0.1 0.0.0.0 UG 0 0
0 ppp0
The last line is doesn't matter
---------
%# iptables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination
Chain FORWARD (policy ACCEPT)
target prot opt source destination
ACCEPT all -- 10.0.2.2 anywhere PHYSDEV
match --physdev-in vif2.0
ACCEPT udp -- anywhere anywhere PHYSDEV
match --physdev-in vif2.0 udp spt:bootpc dpt:bootps
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
%# iptables -t nat -L
Chain PREROUTING (policy ACCEPT)
target prot opt source destination
Chain POSTROUTING (policy ACCEPT)
target prot opt source destination
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
===========
from Dom0:
%# ping 10.0.2.2
PING 10.0.2.2 (10.0.2.2) 56(84) bytes of data.
From 10.9.3.92 icmp_seq=2 Destination Host Unreachable
From 10.9.3.92 icmp_seq=3 Destination Host Unreachable
From 10.9.3.92 icmp_seq=4 Destination Host Unreachable
from DomU:
%# ping 10.9.3.92
ping time out
ping time out
ping time out
ping time out
Also in Dom0:
%# tcpdump | grep 10.0.2.2
shows nothing ;-(
=========
Thank for patience.
P.S. Gentoo user ;-)
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