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xen-devel
Re: [Xen-devel] (repeatable) cross-domain networking failure
mukesh agrawal wrote:
Summary:
After sending some UDP traffic between two xen domains (Domain 0 and
Domain 1) the networking between the domains fails. This failure is 100%
repeatable.
I don't have boxes at the moment and can't reproduce till
Monday, but can you show us the output of netstat -uan and
netstat -s on both domains? Is there stuff in the receive
or send queues? And was all the udp traffic going to the
same port? i.e. any successful udp traffic to another
endpoint?
I then start a UDP server in D0, and a traffic generator in D1. After
the traffic generator sends its 128-th packet, networking between the
domains fails. The 128th packet is received successfully by the UDP
server, but no later traffic arrives in D0. This includes UDP, TCP,
ICMP, and ARP.
What does ifconfig on dom0 show?
Are there any error messages in /var/log/messages?
Looking at the interrupt counts in /proc/interrupts, I see that D0 no
longer receives packets sent by D1. D1, however, does receive packets
sent by D0. (To be clear, D0->D1 traffic is ICMP ping requests,
unrelated to the UDP traffic. There is not UDP traffic sent from D0 to D1.)
Is there any other successful traffic from D0 -> D1 (tcp?)
thanks,
Nivedita
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