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Re: [Xen-users] Networking doesn't work

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] Networking doesn't work
From: jez <jez@xxxxxxxxxx>
Date: Thu, 15 Mar 2007 21:56:31 +0100
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On Thu, Mar 15, 2007 at 09:43:45PM +1100, Russell Robinson wrote:
> 
> According to the rather limited documentation, keeping most of the
> networking configuration at default is supposed to "just work".
> 

Networking docs are on the wiki:

   http://wiki.xensource.com/xenwiki/XenNetworking

Quite complicated though!

> And this is what the host has:
> 
> # ifconfig
> eth0      Link encap:Ethernet  HWaddr 00:16:EC:C5:68:B2
>           inet addr:69.46.20.224  Bcast:69.46.20.255  Mask:255.255.255.0
>           inet6 addr: fe80::216:ecff:fec5:68b2/64 Scope:Link
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:706852 errors:0 dropped:37 overruns:0 frame:0
>           TX packets:70372 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000
>           RX bytes:48400504 (46.1 MiB)  TX bytes:57996195 (55.3 MiB)
>           Interrupt:18 Base address:0xe800
> 
> eth0:0    Link encap:Ethernet  HWaddr 00:16:EC:C5:68:B2
>           inet addr:69.46.20.225  Bcast:69.46.20.255  Mask:255.255.255.0
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           Interrupt:18 Base address:0xe800
> 
> 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:1708 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:1708 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:191483 (186.9 KiB)  TX bytes:191483 (186.9 KiB)
> 
> vif3.0    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:414 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:32
>           RX bytes:12096 (11.8 KiB)  TX bytes:0 (0.0 b)
> 
> 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:456 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:13608 (13.2 KiB)  TX bytes:0 (0.0 b)
> 

This doesn't look quite right. You're missing some entries that would
usually appear in a default setup. Can you give me the following
information:

1. Output from "brctl show" on Dom0
2. The entries for:

       (network-script  ???)
       (vif-script  ???)

    in your /etc/xen/xend-config.sxp
3. Entries for 'vif' in your domain configuration files if they don't
   just look like:

       vif = [ '' ]

4. Also, can this machine still ping other machines on your network in
   it's preset state?
5. Are you using a version of xen that came with your distro or did you
   download it yourself? And if 'distro version', then what distro are 
   you running?



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