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Re: [Xen-users] Xen 3.1 on Debian Etch: Dom0 eth0 dead




Hi,
I just installed a clean debian etch 4.0r1 with LVM on our Dell PowerEdge 2900. The system has 2 Broadcom onboard NICs and I also installed 2 Intel Pro 1000 NICs. I installed all needed pakages and also dev86.

[...]
The kernel booted also without any errors an i got my login prompt. I tried to login with ssh from my workstation but that did not work. So i tried to ping my Server what also failed. An ifconfig gives me an eth0 device with my local IP 192.168.1.6 a lo device a peth0 device a vif0.0 device and a xenbr0 device without any IP. I did not modify the /etc/xen/xend-config.sxp and my /etc/network/interfaces looks like this:

iface eth0 inet static
        address 192.168.1.7
        netmask 255.255.255.0
        #network 192.168.1.0
        #broadcast 192.168.1.255
        gateway 192.168.1.201
# dns-* options are implemented by the resolvconf package, if installed
        #dns-nameservers 192.168.1.210
        #dns-search manntech.local

auto eth3
iface eth3 inet static
        address 192.168.99.7
        netmask 255.255.255.0
        network 192.168.99.0
        broadcast 192.168.99.255



Did you try to run any tracing tools (like Ethereal) to see if you
receive packets on any interfaces? Also, does "brctl show" display all
interfaces properly connected to the bridge? Does your routing table (ip
r) show correct entries?

I tried tcpdump and there was no single incoming packet when i tried to ping 192.168.1.6 (1st cluster node).

brctl show gives me:
xen1:~# brctl show
bridge name     bridge id               STP enabled     interfaces
xenbr0          8000.feffffffffff       no              vif0.0
                                                       peth0

route:
xen1:~# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
localnet        *               255.255.255.0   U     0      0        0 eth0
192.168.99.0    *               255.255.255.0   U     0      0        0 eth3
default         192.168.1.201 0.0.0.0         UG    0      0        0 eth0

ifconfig:
xen1:~# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:19:B9:D8:F4:88
         inet addr:192.168.1.6  Bcast:192.168.1.255  Mask:255.255.255.0
         inet6 addr: fe80::219:b9ff:fed8:f488/64 Scope:Link
         UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
         RX packets:18994 errors:0 dropped:0 overruns:0 frame:0
         TX packets:7129 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:1000
         RX bytes:17246682 (16.4 MiB)  TX bytes:618804 (604.3 KiB)
         Interrupt:16 Memory:f4000000-f4011100

eth3      Link encap:Ethernet  HWaddr 00:1B:21:07:6A:C7
         inet addr:192.168.99.6  Bcast:192.168.99.255  Mask:255.255.255.0
         inet6 addr: fe80::21b:21ff:fe07:6ac7/64 Scope:Link
         UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
         RX packets:3614 errors:0 dropped:0 overruns:0 frame:0
         TX packets:3573 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:1000
         RX bytes:750819 (733.2 KiB)  TX bytes:739891 (722.5 KiB)
         Base address:0xecc0 Memory:f3ee0000-f3f00000

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:31 errors:0 dropped:0 overruns:0 frame:0
         TX packets:31 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:0
         RX bytes:3172 (3.0 KiB)  TX bytes:3172 (3.0 KiB)

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:9880 errors:0 dropped:0 overruns:0 frame:0
         TX packets:49 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:1000
         RX bytes:1483035 (1.4 MiB)  TX bytes:3254 (3.1 KiB)
         Interrupt:16 Memory:f8000000-f8011100

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:48 errors:0 dropped:0 overruns:0 frame:0
         TX packets:8609 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:0
         RX bytes:2296 (2.2 KiB)  TX bytes:1365379 (1.3 MiB)

xenbr0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
         UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
         RX packets:8627 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:1245441 (1.1 MiB)  TX bytes:90 (90.0 b)

iptables -L
xen1:~# iptables -L
Chain INPUT (policy ACCEPT)
target     prot opt source               destination

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination


I also changed my network setup to be sure no other problems are causing this error. I connected the 2 nodes to their own switch. At the moment I connected eth0 and eth1 (Broadcom) to the switch, eth3 ist a crossover connection (gigabit) and eth2 has no cable connected.

A ping 192.168.1.7 (2nd node) gives me "Destination Host Unreachable"
While eth0 is my default LAN interface and eth3 is my crossover interface to the 2nd clusternode. If I change

(network-script network-bridge)
to
(network-script 'network-bridge netdev=eth1')

my eth0 works fine but any DomU I start does not get any network connection.

Do you have both eth0 and eth1 configured and active with static IP
addresses? How does your ifconfig output look like when you run a DomU?


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