[Xen-bugs] [Bug 431] Starting Xen disconnects machine from network

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http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=431





------- Additional Comments From jacquesb@xxxxxxxxx  2005-12-06 13:01 -------
(In reply to comment #6)
> This is pretty odd: to my eye the scripts looks to have executed succesfully.
> 
> Before you run the network script, do you see broadcast traffic on your 
> network 
> if you run 'tcpdump -i eth0'?  

Yes, I see lots of traffic.

Can you use another host to ping your machine to 
> atleast generate some ARP traffic.

Absolutely:

# arp
Address                  HWtype  HWaddress           Flags Mask            Iface
10.43.234.18             ether   00:06:5B:CA:E4:29   C                     eth0
10.43.234.1              ether   00:00:0C:07:AC:00   C                     eth0
10.43.234.108            ether   00:0D:60:C9:80:FE   C                     eth0

> 
> If you run the network script, does the peth0 packets received counters stick 
> on 
> zero?

No, the counters move. It sends and receives the exact same ammount of packets
as eth0.

> What happens if you run 'tcpdump -i peth0'

Nothing ! absolutely nothing.  It enters promiscious mode, but receives no
packets. I have to kill tcpdump with -9 to get control back, ctrl-c does not 
break.

> and 'tcpdump -i eth0'

The same as with 'tcpdump -i peth0'

> 
> Is there anything interesting in dmesg? 

device eth0 entered promiscuous mode
device eth0 left promiscuous mode
device vif0.0 entered promiscuous mode
bridge: can't decode speed from peth0: 0
device peth0 entered promiscuous mode
xenbr0: port 1(vif0.0) entering learning state
xenbr0: topology change detected, propagating
xenbr0: port 1(vif0.0) entering forwarding state
tg3: peth0: Link is up at 100 Mbps, half duplex.
tg3: peth0: Flow control is off for TX and off for RX.
xenbr0: port 2(peth0) entering learning state
xenbr0: topology change detected, propagating
xenbr0: port 2(peth0) entering forwarding state
device eth0 entered promiscuous mode
device eth0 left promiscuous mode


>What kind of network card is this?

0000:05:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5721 Gigabit
Ethernet PCI Express (rev 11)

It's Using the tg3 module.
It's onboard in a IBM x-series 346 machine, dual cpu, 4GB ram, IBM serveraid 7i
controler, all working perfectly.



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