[Xen-users] My Dying Network Connections..

[George Styles <ripnetuk@xxxxxxxxx>]

Hi,

Im using Xen testing from 14 Aug 2005.
I have 3 DomU machines.
Everything works most of the time, but occasionally (about once a
week), and not assocaited with any heavy usage, the network dies.

I can still ssh into the Dom0 machine, but that cannot see any of my
DomU machines.

I can connect via console to the DomU machines, and they cannot see
'out' either. They are however running fine (albeit without
networking)

Any ideas how to start debugging this? has anything like this been
fixed in testing since 14 aug?

When its not wokring, I tried ifconfig and brctl, and to my untrained
eye it all looks fine.

How can I find out whats not working???

thanks

g

(When its working, IFConfig gives

eth0      Link encap:Ethernet  HWaddr 4C:00:10:21:4C:BE
          inet addr:192.168.10.220  Bcast:192.168.10.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:203828 errors:0 dropped:0 overruns:0 frame:0
          TX packets:146316 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:250628668 (239.0 MiB)  TX bytes:71201816 (67.9 MiB)
          Interrupt:21 Base address:0xa000

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:3844 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3844 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:257268 (251.2 KiB)  TX bytes:257268 (251.2 KiB)

vif1.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:9620 errors:0 dropped:0 overruns:0 frame:0
          TX packets:8712 errors:0 dropped:81 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:2014768 (1.9 MiB)  TX bytes:3203884 (3.0 MiB)

vif2.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:59378 errors:0 dropped:0 overruns:0 frame:0
          TX packets:32603 errors:0 dropped:66 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:86719420 (82.7 MiB)  TX bytes:2608655 (2.4 MiB)

vif3.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:266553 errors:0 dropped:0 overruns:0 frame:0
          TX packets:181363 errors:0 dropped:262 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:256948645 (245.0 MiB)  TX bytes:248877128 (237.3 MiB)

xen-br0   Link encap:Ethernet  HWaddr 4C:00:10:21:4C:BE
          inet addr:192.168.10.220  Bcast:192.168.10.255  Mask:255.255.255.255
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:258947 errors:0 dropped:0 overruns:0 frame:0
          TX packets:88567 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:335746440 (320.1 MiB)  TX bytes:70410814 (67.1 MiB)




and

brctl show gives

bridge name     bridge id               STP enabled     interfaces
xen-br0         8000.4c0010214cbe       no              eth0
                                                        vif1.0
                                                        vif2.0
                                                        vif3.0

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