Re: [Xen-users] Yet another question about multiple NICs

[Simon Hobson <linux@xxxxxxxxxxxxxxxx>]

I think the next thing I'd be doing is firing up wireshark (or rather 
it's text-only brother tshark).
On Dom0, get the network working and ping another machine on the lan.
Fire up tshark on peth<n> and watch the traffic - you should see both 
the ping request and reply.
Fire up a DomU, and do the same ping - which I gather doesn't work. 
Keep the ping going from Dom0.
Keep watching the packet trace in Dom0 - of interest here are things like :

Did DomU send an ARP request for the remote device ?
Did the remote device reply ?
Are the ping requests going out ?
Are the replies coming back ? To the right MAC ?

If you see requests going out, but no reply, try firing up a packet 
sniffer on the remote machine and see if the requests are reaching it.
Also, apart from the initial messages* when you fire up the DomU, are 
there any other bridge related messages in the logs ?
* From memory, it should log :
Interface added
Interface going into learning mode
Interface going into active mode


--
Simon Hobson

Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
author Gladys Hobson. Novels - poetry - short stories - ideal as
Christmas stocking fillers. Some available as e-books.

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