From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nivedita Singhvi Subject: Re: (repeatable) cross-domain networking failure Date: Sat, 15 Jan 2005 13:14:27 -0800 Message-ID: <41E987B3.3090605@us.ibm.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: xen-devel-admin@lists.sourceforge.net Errors-To: xen-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: mukesh agrawal Cc: xen-devel@lists.sourceforge.net List-Id: xen-devel@lists.xenproject.org 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 ------------------------------------------------------- The SF.Net email is sponsored by: Beat the post-holiday blues Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek. It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt