Re: [Xen-users] Dom0 networking fails ...

[Tej <bewith.tej@xxxxxxxxx>]

On 8/15/08, Marc Verwerft <marc.js.verwerft@xxxxxxxxx> wrote:
> Hi all,
>
> I am really new to Xen but do want to give it a try. Unfortunately,
> the network is failing. I can't ping my router/DHCP server. I guess I
> must be doing something wrong but absolutely have no clue how to sort
> it out. That's were you folks come in ;-)
>
> My configuration:
> HW:
> - Thinkpad T40, Intel Pentiul M 1.5GHz with 1 Gb Ram
> - ethernet controller Intel Corp. 82540EP Gigabit (rev 03)   shows as eth0
> - network controller: Intel Corp PRO/Wireless lan 2100 3B Mini PCI
> adapter (rev 04)    shows as eth1
> SW
> - ubuntu 8.04 with Xen (libxen3 - 3.2.0-0ubuntu10)
> - kernel 2.6.24.-19-xen #1 SMP
>
> Symptoms:
> - everything seems to work fine, except for the networking. I can't
> ping my router:
>  'ping -I peth0 192.168.1.1' gives:
>   From 192.168.1.102 icmp_seq=1 Destination Host Unreachable
>   ...
> - ifconfig is giving me 2 interfaces, lo and peth0
>  peth0 HWaddr 00:09:6b:9f:4d:2c
>  inet addr 192.168.1.102 Bcast 192.168.1.255 Mask 255.255.255.0)
>  eth0 has the same HWaddr
> - ifconfig -a show lots more (eth0, eth1,irda0,lo,peth0,tmpbridge,...)
> only peth0 has a decent ip address
> - cat /etc/resolv.conf | grep -v '#'
> search my.domain
> nameserver 192.168.2.99
> - netstat -rn
> Kernel IP routing table
> Destination      Gateway          Genmask           Flags     MSS
> Window   irtt  Iface
> 192.168.1.0      0.0.0.0            255.255.255.0   U                0
>  0               0   peth0
> 0.0.0.0              192.168.1.1    0.0.0.0               UG
>   0  0               0   peth0
> - brctl show
> bridge name        bridge id                      STP enabled
> interfaces
> eth0                     8000.00096b9f4d2c    no                      peth0
> tmpbridge            8000.00000000000     no

your brctl shows that there is no vif<domid>.interface  (vif1.0) exist.
this means that there is not connectivity between dom0 and domU

I guess there is your domU configuration file is missing following lines.

vif = [ 'mac=00:16:3e:00:00:11', 'bridge=xenbr0' ]

HTH


> - I tried shutting down and restarting the network, still no connectivity
> - everything works when I just start Ubuntu ...
> - I've tried to install the same packages on another machine (thinkpad
> T42) and it has
> the same problem.
>
> Can anybody give me hint on what I'm doing wrong?
>
> Regards,
>
> Marc Verwerft
>
> _______________________________________________
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> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
>

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