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Re: [Xen-users] xen 3.1 network configuration problem

To: TURPIN Olivier <turpin_olivier@xxxxxxxxxxx>

From: kanour-xen <xen@xxxxxxxxxx>

Date: Fri, 23 Nov 2007 15:37:26 +1100

Delivery-date: Thu, 22 Nov 2007 20:38:25 -0800

List-id: Xen user discussion <xen-users.lists.xensource.com>

TURPIN Olivier wrote:

Hello,

I am trying to use XEN networking as default : bridge xenbr0 with
ethernet adaptor eth0. As soon as xend is started , xenbr0 does not
activate and eth0 seems to run as if no bridge were preent.

Here is my config file:
# To bridge network traffic, like this:
#
# dom0: fake eth0 -vif0.0 -+
#                            |
#                          bridge -real eth0 -the network
#                            |
# domU: fake eth0 -vifN.0 -+
#
# use
#
# (network-script network-bridge)
#
# Your default ethernet device is used as the outgoing interface, by
default.
# To use a different one (e.g. eth1) use
#
# (network-script 'network-bridge netdev=eth1')
#
# The bridge is named xenbr0, by default.  To rename the bridge, use
#
# (network-script 'network-bridge bridge=<name>')
#
# It is possible to use the network-bridge script in more complicated
# scenarios, such as having two outgoing interfaces, with two bridges,
and
# two fake interfaces per guest domain.  To do things like this, write
# yourself a wrapper script, and call network-bridge from it, as
appropriate.
#
(network-script 'network-bridge bridge=xenbr0 netdev=eth0')
 # The script used to control virtual interfaces.  This can be overridden
on a
# per-vif basis when creating a domain or a configuring a new vif.  The
# vif-bridge script is designed for use with the network-bridge script,
or
# similar configurations.
#
# If you have overridden the bridge name using
# (network-script 'network-bridge bridge=<name>') then you may wish to do
the
# same here.  The bridge name can also be set when creating a domain or
# configuring a new vif, but a value specified here would act as a
default.
#
# If you are using only one bridge, the vif-bridge script will discover
that,
# so there is no need to specify it explicitly.
#
(vif-script 'vif-bridge bridge=xenbr0')
 -------------------------------------------------------------

 An ifconfig gives the following:

 eth0      Link encap:Ethernet  HWaddr 9E:34:72:FC:1B:00
         inet adr:192.168.0.3  Bcast:192.168.0.255  Masque:255.255.255.0
         adr inet6: fe80::9c34:72ff:fefc:1b00/64 Scope:Lien
         UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
         RX packets:13 errors:0 dropped:0 overruns:0 frame:0
         TX packets:24 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 lg file transmission:0
         RX bytes:2727 (2.6 KiB)  TX bytes:4357 (4.2 KiB)
 lo        Link encap:Boucle locale
         inet adr:127.0.0.1  Masque:255.0.0.0
         adr inet6: ::1/128 Scope:Hôte
         UP LOOPBACK RUNNING  MTU:16436  Metric:1
         RX packets:882 errors:0 dropped:0 overruns:0 frame:0
         TX packets:882 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 lg file transmission:0
         RX bytes:44100 (43.0 KiB)  TX bytes:44100 (43.0 KiB)
 peth0     Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
         adr inet6: fe80::fcff:ffff:feff:ffff/64 Scope:Lien
         UP BROADCAST RUNNING NOARP  MTU:1500  Metric:1
         RX packets:260 errors:0 dropped:0 overruns:0 frame:0
         TX packets:363 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 lg file transmission:1000
         RX bytes:39940 (39.0 KiB)  TX bytes:35555 (34.7 KiB)
         Interruption:16 Adresse de base:0x6000
 vif0.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
         adr inet6: fe80::fcff:ffff:feff:ffff/64 Scope:Lien
         UP BROADCAST RUNNING NOARP  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 lg file transmission:0
         RX bytes:4357 (4.2 KiB)  TX bytes:2797 (2.7 KiB)
 xenbr0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
         inet adr:192.168.0.20  Bcast:192.168.0.255  Masque:255.255.255.0
         UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
         RX packets:24 errors:0 dropped:0 overruns:0 frame:0
         TX packets:17 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 lg file transmission:0
         RX bytes:4021 (3.9 KiB)  TX bytes:2979 (2.9 KiB)

-------------------------------------------------------

Here is the result of the command:

bridge name     bridge id               STP enabled     interfaces
xenbr0          8000.feffffffffff       no              vif0.0
                                                       peth0

I enclosed the log files generated by xen for the command line :service xend start :

I have no idea of the reason why the xen network does not start. (Do Ineed a package which is not present ?)


If anyone could give a way where to investigate ...

Thx a lot


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As far as I see the ifconfig command says that the bridge is there?

The eth0 is normal. I only dont know why you have ip address assigned

for xenbr0?

I dont see anything bad on your configuration. Tell us what does not work? For domU you have to then specify the bridge in domU config. For comparison here is mine with more bridges. eth0 Link encap:Ethernet HWaddr 00:14:C2:3A:AB:63 inet addr:192.168.30.11 Bcast:192.168.30.255 Mask:255.255.255.0 inet6 addr: fe80::214:c2ff:fe3a:ab63/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:24989 errors:0 dropped:0 overruns:0 frame:0 TX packets:17339 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:2253137 (2.1 MiB) TX bytes:3373292 (3.2 MiB) 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:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) peth0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link UP BROADCAST RUNNING NOARP MTU:1500 Metric:1 RX packets:24972 errors:0 dropped:0 overruns:0 frame:0 TX packets:17349 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:2351825 (2.2 MiB) TX bytes:3443564 (3.2 MiB) Interrupt:20 peth1 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link UP BROADCAST RUNNING NOARP MTU:1500 Metric:1 RX packets:126737 errors:0 dropped:0 overruns:0 frame:0 TX packets:106149 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:44011994 (41.9 MiB) TX bytes:84835611 (80.9 MiB) Interrupt:18 vif0.0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link UP BROADCAST RUNNING NOARP MTU:1500 Metric:1 RX packets:17339 errors:0 dropped:0 overruns:0 frame:0 TX packets:24989 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:3373292 (3.2 MiB) TX bytes:2253137 (2.1 MiB) vif0.1 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link UP BROADCAST RUNNING NOARP MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:1127 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:127247 (124.2 KiB) vif18.0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link UP BROADCAST RUNNING NOARP MTU:1500 Metric:1 RX packets:97626 errors:0 dropped:0 overruns:0 frame:0 TX packets:112923 errors:0 dropped:77 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:81439022 (77.6 MiB) TX bytes:39929936 (38.0 MiB) xenbr0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link UP BROADCAST RUNNING NOARP MTU:1500 Metric:1 RX packets:550 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:74036 (72.3 KiB) TX bytes:0 (0.0 b) xenbr1 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link UP BROADCAST RUNNING NOARP MTU:1500 Metric:1 RX packets:938 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:96030 (93.7 KiB) TX bytes:0 (0.0 b) Jiri _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users

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