Re: [Xen-devel] 2 nics

[Felipe Alfaro Solana <felipe.alfaro@xxxxxxxxx>]

On Wed, 23 Mar 2005 10:59:52 +0000 (UTC), Michael Stoehrel
<mstoehrel@xxxxxxxxxxx> wrote:
> Hi all
> 
> I am running xen (2.0.5) with debian sarge.
> Sources compiled (2.6.10) on a via epia pd-10000 with 2 nics.
> 
> eth0: dhcp
> eth1: static
> 
> before xend started:
> --------------------
> 
> outgoing trafic OK (through eth0)
> incoming trafic on both nics ok
> 
> eth0      Link encap:Ethernet  HWaddr 00:40:63:DB:55:18
>           inet addr:192.168.253.55  Bcast:192.168.253.255  Mask:255.255.255.0
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:20 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:15 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000
>           RX bytes:2664 (2.6 KiB)  TX bytes:1562 (1.5 KiB)
>           Interrupt:9 Base address:0xd000
> 
> eth1      Link encap:Ethernet  HWaddr 00:40:63:DB:55:4A
>           inet addr:192.168.254.5  Bcast:192.168.254.255  Mask:255.255.255.0
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:3 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000
>           RX bytes:0 (0.0 b)  TX bytes:126 (126.0 b)
>           Interrupt:11 Base address:0xe400
> 
> lo        Link encap:Local Loopback
>           inet addr:127.0.0.1  Mask:255.0.0.0
>           UP LOOPBACK RUNNING  MTU:16436  Metric:1
>           RX packets:1 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:1 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:104 (104.0 b)  TX bytes:104 (104.0 b)
> 
> after xend started:
> -------------------
> 
> outgoing traffic dead
> incoming traffic on eth0 dead
> incoming trafic on eth1 ok
> eth0      Link encap:Ethernet  HWaddr 00:40:63:DB:55:18
>           inet addr:192.168.253.55  Bcast:192.168.253.255  Mask:255.255.255.0
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:25 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:15 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000
>           RX bytes:2990 (2.9 KiB)  TX bytes:1562 (1.5 KiB)
>           Interrupt:9 Base address:0xd000
> 
> eth1      Link encap:Ethernet  HWaddr 00:40:63:DB:55:4A
>           inet addr:192.168.254.5  Bcast:192.168.254.255  Mask:255.255.255.0
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000
>           RX bytes:0 (0.0 b)  TX bytes:252 (252.0 b)
>           Interrupt:11 Base address:0xe400
> 
> lo        Link encap:Local Loopback
>           inet addr:127.0.0.1  Mask:255.0.0.0
>           UP LOOPBACK RUNNING  MTU:16436  Metric:1
>           RX packets:2 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:2 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:208 (208.0 b)  TX bytes:208 (208.0 b)
> 
> xen-br0   Link encap:Ethernet  HWaddr 00:00:00:00:00:00
>           inet addr:192.168.253.55  Bcast:192.168.253.255  
> Mask:255.255.255.255
>           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:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
> 
> because bridging connects to eth0 ip traffic on a started virtual machine is 
> dead
> 
> if I disable 1 nic the BIOS, all is incomming and outgoing trafic is ok
> and the virtual machine too.

You can force xen to set up the bridge onto eth1 instead of eth0...
just edit /etc/xen/scripts/network and replace

netdev=${netdev:-eth1}

with

netdev=${netdev:-eth0}


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