This may be more of a Linux Bridge question, but I thought I''d ask on the XEN list just to see if anyone has any experience with this. I''m running Xen 3.2 on SLES10 SP2. I run several XP Virtual Machines that people can log in to remotely (via RDP). Many of these machines sit on the same bridge on the dom0 machine, and I''m running into a situation where anytime the "bridge topology" changes the RDP connections are lost. So, if I reboot one of the VMs, which causes the bridge to first drop the Xen virtual interface for that VM, then re-add it under the new ID, everyone loses their connections to the other VMs and has to reconnect. I did some packet tracing, and all I found was an RST packet, but no indication as to why the host sent the RST packet. Can anyone offer any insight into this issue? Thanks, Nick -------- This e-mail may contain confidential and privileged material for the sole use of the intended recipient. If this email is not intended for you, or you are not responsible for the delivery of this message to the intended recipient, please note that this message may contain SEAKR Engineering (SEAKR) Privileged/Proprietary Information. In such a case, you are strictly prohibited from downloading, photocopying, distributing or otherwise using this message, its contents or attachments in any way. If you have received this message in error, please notify us immediately by replying to this e-mail and delete the message from your mailbox. Information contained in this message that does not relate to the business of SEAKR is neither endorsed by nor attributable to SEAKR. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Nick, Not sure of the answer to your question, but I''m curious whether you have STP turned on in your bridge interface. If you do, you might try turning it off, and vice versa, to see if it helps your network infrastructure respond to changes in topology either way. Jeff From: xen-users-bounces@lists.xensource.com [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of Nick Couchman Sent: Thursday, August 06, 2009 2:38 PM To: XEN Mailing List Subject: [Xen-users] Bridge Changes Cause Connections to Drop This may be more of a Linux Bridge question, but I thought I''d ask on the XEN list just to see if anyone has any experience with this. I''m running Xen 3.2 on SLES10 SP2. I run several XP Virtual Machines that people can log in to remotely (via RDP). Many of these machines sit on the same bridge on the dom0 machine, and I''m running into a situation where anytime the "bridge topology" changes the RDP connections are lost. So, if I reboot one of the VMs, which causes the bridge to first drop the Xen virtual interface for that VM, then re-add it under the new ID, everyone loses their connections to the other VMs and has to reconnect. I did some packet tracing, and all I found was an RST packet, but no indication as to why the host sent the RST packet. Can anyone offer any insight into this issue? Thanks, Nick ________________________________ <br><hr> This e-mail may contain confidential and privileged material for the sole use of the intended recipient. If this email is not intended for you, or you are not responsible for the delivery of this message to the intended recipient, please note that this message may contain SEAKR Engineering (SEAKR) Privileged/Proprietary Information. In such a case, you are strictly prohibited from downloading, photocopying, distributing or otherwise using this message, its contents or attachments in any way. If you have received this message in error, please notify us immediately by replying to this e-mail and delete the message from your mailbox. Information contained in this message that does not relate to the business of SEAKR is neither endorsed by nor attributable to SEAKR. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
François Delpierre
2009-Aug-07 12:49 UTC
Re: [Xen-users] Bridge Changes Cause Connections to Drop
Hi, Does it affect the communication between VMs and/or communication between dom0 and domUs ? If it''s the case, I solved some bridging problem by issuing an ifconfig -arp just after bridge setup on the physical interface belonging to the bridge. François. ----- Original Message ----- From: "Jeff Sturm" <jeff.sturm@eprize.com> To: "Nick Couchman" <Nick.Couchman@seakr.com>, "XEN Mailing List" <xen-users@lists.xensource.com> Sent: Friday, 7 August, 2009 02:46:40 GMT +01:00 Amsterdam / Berlin / Bern / Rome / Stockholm / Vienna Subject: RE: [Xen-users] Bridge Changes Cause Connections to Drop Nick, Not sure of the answer to your question, but I''m curious whether you have STP turned on in your bridge interface. If you do, you might try turning it off, and vice versa, to see if it helps your network infrastructure respond to changes in topology either way. Jeff From: xen-users-bounces@lists.xensource.com [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of Nick Couchman Sent: Thursday, August 06, 2009 2:38 PM To: XEN Mailing List Subject: [Xen-users] Bridge Changes Cause Connections to Drop This may be more of a Linux Bridge question, but I thought I''d ask on the XEN list just to see if anyone has any experience with this. I''m running Xen 3.2 on SLES10 SP2. I run several XP Virtual Machines that people can log in to remotely (via RDP). Many of these machines sit on the same bridge on the dom0 machine, and I''m running into a situation where anytime the "bridge topology" changes the RDP connections are lost. So, if I reboot one of the VMs, which causes the bridge to first drop the Xen virtual interface for that VM, then re-add it under the new ID, everyone loses their connections to the other VMs and has to reconnect. I did some packet tracing, and all I found was an RST packet, but no indication as to why the host sent the RST packet. Can anyone offer any insight into this issue? Thanks, Nick <br><hr> This e-mail may contain confidential and privileged material for the sole use of the intended recipient. If this email is not intended for you, or you are not responsible for the delivery of this message to the intended recipient, please note that this message may contain SEAKR Engineering (SEAKR) Privileged/Proprietary Information. In such a case, you are strictly prohibited from downloading, photocopying, distributing or otherwise using this message, its contents or attachments in any way. If you have received this message in error, please notify us immediately by replying to this e-mail and delete the message from your mailbox. Information contained in this message that does not relate to the business of SEAKR is neither endorsed by nor attributable to SEAKR. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users