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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-users] Xen bridged network - problem
Hi,
I'm using xen in bridged mode with following configuration:
Four zones: fw, loc, dmz, net
dom0 10.12.123.2 connected via bridge "brloc" to firewall (domU1) 10.12.123.1
(eth1)- this link is fine I can ping them in both directions.
Physically, eth0 at dom0 is connected to the network of hosting company. I have
this interface unconfigured at dom0 and bridged it directly to eth0 at domU1. I
configure statically this interface at domU1 via bridge breth.
I had network connectivity from domU1 and it was working fine. I left the setup
for some time and it's not working anymore. I did not change anything. My
hosting company is hetzner. I asked support, and they said that MAC is binded
to IP and all other packets are discarded at the router. I'm not sure though if
MAC is a problem. Let's look at configuration files:
*****************dom0********************************
/etc/network/interfaces:
auto lo
iface lo inet loopback
iface eth0 inet manual
#bridge for domU1 net connection
auto breth
iface breth inet manual
bridge_ports eth0
bridge_maxwait 5
auto brloc
iface brloc inet static
bridge_ports none
address 10.12.123.2
netmask 255.255.255.0
gateway 10.12.123.1
bridge_maxwait 5
auto brdmz
iface brdmz inet manual
bridge_ports none
bridge_maxwait 5
# grep ^[^#] /etc/xen/xend-config.sxp
(vif-script vif-bridge)
(dom0-min-mem 196)
(enable-dom0-ballooning yes)
(total_available_memory 0)
(dom0-cpus 0)
(vncpasswd '')
# cat /etc/xen/fw.cfg
kernel = '/boot/vmlinuz-3.2.0-0.bpo.2-amd64'
ramdisk = '/boot/initrd.img-3.2.0-0.bpo.2-amd64'
vcpus = '1'
memory = '256'
#
# Disk device(s).
#
root = '/dev/xvda2 ro'
disk = [
'phy:/dev/vg0/fw-disk,xvda2,w',
'phy:/dev/vg0/fw-swap,xvda1,w',
]
#
# Physical volumes
#
#
# Hostname
#
name = 'fw'
#
# Networking
#
vif = [
'bridge=breth,ip=7.5.7.202,mac=00:16:3E:97:7B:9C','bridge=brloc,mac=00:16:3e:07:d2:0f',
'bridge=brdmz,mac=00:16:3e:07:d2:10' ]
#
# Behaviour
#
on_poweroff = 'destroy'
on_reboot = 'restart'
on_crash = 'restart'
# brctl show
bridge name bridge id STP enabled interfaces
brdmz 8000.feffffffffff no vif1.2
breth 8000.c860008dbc96 no eth0
vif1.0
brloc 8000.feffffffffff no vif1.1
#ifconfig
brdmz Link encap:Ethernet HWaddr fe:ff:ff:ff:ff:ff
inet6 addr: fe80::9010:7cff:febf:ac00/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:6 errors:0 dropped:0 overruns:0 frame:0
TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:384 (384.0 B) TX bytes:1328 (1.2 KiB)
breth Link encap:Ethernet HWaddr c8:60:00:xx:xx:xx
inet6 addr: fe80::ca60:ff:xxxx:xxxx/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:935 errors:0 dropped:0 overruns:0 frame:0
TX packets:18 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:34884 (34.0 KiB) TX bytes:1492 (1.4 KiB)
brloc Link encap:Ethernet HWaddr fe:ff:ff:ff:ff:ff
inet addr:10.12.123.2 Bcast:10.12.123.255 Mask:255.255.255.0
inet6 addr: fe80::7432:8eff:fec6:a203/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:347 errors:0 dropped:0 overruns:0 frame:0
TX packets:595 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:29576 (28.8 KiB) TX bytes:36722 (35.8 KiB)
eth0 Link encap:Ethernet HWaddr c8:60:00:xx:xx:xx
inet6 addr: fe80::ca60:ff:xxxx:xxxx/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:534 errors:0 dropped:41 overruns:0 frame:0
TX packets:500 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:34561 (33.7 KiB) TX bytes:32628 (31.8 KiB)
Interrupt:17 Memory:fe500000-fe520000
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:171 errors:0 dropped:0 overruns:0 frame:0
TX packets:171 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:15481 (15.1 KiB) TX bytes:15481 (15.1 KiB)
vif1.0 Link encap:Ethernet HWaddr fe:ff:ff:ff:ff:ff
inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1
RX packets:472 errors:0 dropped:0 overruns:0 frame:0
TX packets:27 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:32
RX bytes:13740 (13.4 KiB) TX bytes:1843 (1.7 KiB)
vif1.1 Link encap:Ethernet HWaddr fe:ff:ff:ff:ff:ff
inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1
RX packets:354 errors:0 dropped:0 overruns:0 frame:0
TX packets:365 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:32
RX bytes:30080 (29.3 KiB) TX bytes:27006 (26.3 KiB)
vif1.2 Link encap:Ethernet HWaddr fe:ff:ff:ff:ff:ff
inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1
RX packets:13 errors:0 dropped:0 overruns:0 frame:0
TX packets:22 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:32
RX bytes:888 (888.0 B) TX bytes:1524 (1.4 KiB)
# cat /etc/sysctl.conf
# sysctl config
net.ipv4.ip_forward=1
net.ipv4.conf.default.proxy_arp=1
net.ipv4.conf.all.proxy_arp=1
net.ipv4.conf.all.rp_filter=1
net.ipv4.icmp_echo_ignore_broadcasts=1
**************************domU1***********************
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:142 errors:0 dropped:0 overruns:0 frame:0
TX packets:142 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:12872 (12.5 KiB) TX bytes:12872 (12.5 KiB)
eth0 Link encap:Ethernet HWaddr 00:16:3e:07:d2:01
inet addr:7.5.7.202 Bcast:7.5.7.223 Mask:255.255.255.224
inet6 addr: fe80::216:3eff:fe07:d201/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:29 errors:0 dropped:0 overruns:0 frame:0
TX packets:527 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1569 (1.5 KiB) TX bytes:22702 (22.1 KiB)
Interrupt:23
eth1 Link encap:Ethernet HWaddr 00:16:3e:07:d2:0f
inet addr:10.12.123.1 Bcast:10.12.123.255 Mask:255.255.255.0
inet6 addr: fe80::216:3eff:fe07:d20f/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:408 errors:0 dropped:0 overruns:0 frame:0
TX packets:392 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:24348 (23.7 KiB) TX bytes:38639 (37.7 KiB)
Interrupt:24
eth2 Link encap:Ethernet HWaddr 00:16:3e:07:d2:10
inet addr:10.12.120.1 Bcast:10.12.120.255 Mask:255.255.255.0
inet6 addr: fe80::216:3eff:fe07:d210/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:24 errors:0 dropped:0 overruns:0 frame:0
TX packets:14 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1320 (1.2 KiB) TX bytes:1156 (1.1 KiB)
Interrupt:25
# ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
>From 7.5.7.202 icmp_seq=2 Destination Host Unreachable
>From 7.5.7.202 icmp_seq=3 Destination Host Unreachable
--- 8.8.8.8 ping statistics ---
4 packets transmitted, 0 received, +2 errors, 100% packet loss, time 3015ms
pipe 2
#cat /etc/sysctl.conf
net.ipv4.ip_forward=1
net.ipv4.conf.default.proxy_arp=1
What can be the reason ?
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