Varshney, Chamanesh Mohan (STSD)
2011-May-06 06:59 UTC
[Xen-users] IPV6 Details on Xen Hypervisor
Hi Experts, Our product supports Xen hypervisor on RHEL and SUSE in our environment. Now we are going to support IPV6 support for all hypervisors. Can you please provide me details for Xen related to IPv6 support.I am expecting pointers on - Whether Xen supports ipv6 - Whether Protocol(like SSH etc) used in communication (North/south) supports IPv6. Please provide me pointers on the details of IPv6 on Xen. Regards, Chamanesh _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On May 6, 2011, at 2:59, "Varshney, Chamanesh Mohan (STSD)" <chamanesh-mohan.varshney@hp.com> wrote:> > Hi Experts, > > Our product supports Xen hypervisor on RHEL and SUSE in our environment. Now we are going to support IPV6 support for all hypervisors. > > Can you please provide me details for Xen related to IPv6 support.I am expecting pointers on > > - Whether Xen supports ipv6 > - Whether Protocol(like SSH etc) used in communication (North/south) supports IPv6. > > > Please provide me pointers on the details of IPv6 on Xen. > > Regards, > ChamaneshTo be pedantic: - The hypervisor does not support _any_ networking; its job is to cordinate low-level access to CPU and memory, and to pass hardware I/O requests to the "Dom0" guest OS. It''s the Dom0 and DomU guest OSes which do all of the networking, so it depends on what you use and configure. - For performance, there are special "network card" drivers for domU''s that communicate with back-end drivers running in the dom0. I believe there are several varieties of those you can use, but also believe they all operate down at the Ethernet frame level. Regardless, all of them will support IPv6. - Most Xen documentation, as well as configuration generation tools, assume that you want to use the Xen version of these special drivers ("VIF"), and have the dom0 be a layer-2 (Ethernet frame) bridge between the domUs and the physical LAN cards. - But there are lots of ways you could set it up. It''s even possible to have no networking stack at all on the domU; you could use PCI pass-through and have the dom0 directly talk to the card. Or, you could configure the dom0 as an IPv4-IPv6 bridge, and have one or more domUs as IPv4 only. Or put IPv6 tunneling in a domU, and not bother with v6 on the dom0. Or have a domU serve as the layer-3 (IP level) router for other guests, or... - Higher level protocols, such as SSH, are completely handled by the domU or dom0 you are talking to, and have nothing to do with Xen. -- Michael South msouth@msouth.org _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users