Hi Marco, I have testet the same network config with FC5 a half year ago with the same problem. Finaly my setup was running with server-eth0 <-> bridge <-> vlanXY <-> domU-eth0.XY Now I like to test your config again with rhel5. Regards Thomas -----Ursprüngliche Nachricht----- Von: Marco Mililotti [mailto:m.mililotti@caspur.it] Gesendet: Mittwoch, 28. März 2007 11:03 An: Thomas von Steiger Betreff: Re: AW: [Xen-users] xen + vlan: works but... Thomas von Steiger wrote:> Maybe you need to change MTU. > Search about this in google xen vlan MTU. > ThomasHi Thomas. I forgot to mention... but I''ve changed the MTU size of the outgoing physical interface of the xen server to 1504, and sniffing traffic using tcpdump I''ve found that outgoing packets are forged with the right size. So... I don''t think It''s an mtu size problem. Moreover, with the same setup and MTU size I can succesfully test 2 physical hosts, as I''ve reported in what I called "case C)". One of which physical host is the Xen server. Maybe we could add this thread to the mailing list? If you want to reply there? Thanks for your suggestion... Regards, -- -- Marco Mililotti "Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well-armed lamb contesting the vote." Benjamin Franklin -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.446 / Virus Database: 268.18.20/736 - Release Date: 27.03.2007 16:38 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.446 / Virus Database: 268.18.20/736 - Release Date: 27.03.2007 16:38 _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Is there any howto or reference doc. about this? I need to setup something like that.> Hi Marco, > I have testet the same network config with FC5 a half year ago with the > same > problem. > Finaly my setup was running with > server-eth0 <-> bridge <-> vlanXY <-> domU-eth0.XY > Now I like to test your config again with rhel5. > > Regards > Thomas > > -----Ursprüngliche Nachricht----- > Von: Marco Mililotti [mailto:m.mililotti@caspur.it] > Gesendet: Mittwoch, 28. März 2007 11:03 > An: Thomas von Steiger > Betreff: Re: AW: [Xen-users] xen + vlan: works but... > > Thomas von Steiger wrote: >> Maybe you need to change MTU. >> Search about this in google xen vlan MTU. >> Thomas > > Hi Thomas. > I forgot to mention... but I''ve changed the MTU size of the outgoing > physical interface of the xen server to 1504, and sniffing traffic using > tcpdump I''ve found that outgoing packets are forged with the right size. > > So... I don''t think It''s an mtu size problem. Moreover, with the same > setup and MTU size I can succesfully test 2 physical hosts, as I''ve > reported in what I called "case C)". One of which physical host is the > Xen server. > > Maybe we could add this thread to the mailing list? If you want to reply > there? > > Thanks for your suggestion... > Regards, > -- > -- Marco Mililotti > "Democracy is two wolves and a lamb voting on what to have for lunch. > Liberty is a well-armed lamb contesting the vote." > Benjamin Franklin > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.5.446 / Virus Database: 268.18.20/736 - Release Date: > 27.03.2007 > 16:38 > > > -- > No virus found in this outgoing message. > Checked by AVG Free Edition. > Version: 7.5.446 / Virus Database: 268.18.20/736 - Release Date: > 27.03.2007 > 16:38 > > > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users >Un saludote. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Thomas von Steiger wrote:> Hi Marco, > I have testet the same network config with FC5 a half year ago with the same > problem. > Finaly my setup was running with > server-eth0 <-> bridge <-> vlanXY <-> domU-eth0.XY > Now I like to test your config again with rhel5.That would be interesting... since RHEL5 is shipping with Xen-3.0.3 while SLES10 (the one I''m using) has Xen-3.0.2... It would be interesting also if someone (e.g. from XenSource) could tell me if the upcoming XenEnterprise 3.2 has this issue ... Regards, -- -- Marco Mililotti "Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well-armed lamb contesting the vote." Benjamin Franklin _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Angel Lopez wrote:> Is there any howto or reference doc. about this? > I need to setup something like that.Hi, I''ve found suggestion and comments useful on that list. A well done document is that of Felipe Alfaro: http://felipe-alfaro.org/blog/2006/07/21/xen-network-configuration-and-multiple-vlans/ Essentially it''s a matter of: 1- creating a vlan (e.g. with id N) for -- say -- physical eth0 * modprobe 8021q * vconfig add eth0 N Now you have an eth0.N * ifconfig eth0.N 0.0.0.0 up 2- creating a bridge for that vlan * brctl addbr vbridgeN * ifconfig vbridgeN 0.0.0.0 up 3- adding the vlan iface to the bridge * brctl addif vbridgeN eth0.N 4- create a VM config and inserting it''s eth0 on the new vbridgeN That could be done as follows in the vm config file: * vif = [ ''mac=....., bridge=vbridgeN'' ] 5- Now on the VM you con configure it''s eth0 with an IP on the vlanN And if your vlan setup is right, all should be working... Please let me know if you can experiment with UDP traffic and you see my same problem... Bye, -- -- Marco Mililotti "Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well-armed lamb contesting the vote." Benjamin Franklin _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users