David, Link local is so that the management server can talk to them, and the private (management) address is so they can talk to the management server.
The Virtual Router has no private address so the standard way that CloudStack management servers talk to all system VMs is via link local. SSVM and CPVM have a private address and they use this when thy initiate comms to the management server, using the address specified in the 'host' global setting' which should be a load balanced ip if you have more than one management server. The exception to this is if using VMware which does not have a link local network, in which case the equivalent VIF on the vm is allocated a private ip range, but of course basic networking does not work with VMWare so we can ignore that for now. Regards Geoff Higginbottom CTO / Cloud Architect D: +44 20 3603 0542<tel:+442036030542> | S: +44 20 3603 0540<tel:+442036030540> | M: +447968161581<tel:+447968161581> geoff.higginbot...@shapeblue.com<mailto:geoff.higginbot...@shapeblue.com> | www.shapeblue.com ShapeBlue Ltd, 53 Chandos Place, Covent Garden, London, WC2N 4HS On 3 Oct 2013, at 22:02, "David Comerford" <davest...@gmail.com<mailto:davest...@gmail.com>> wrote: Hi, Why do system VM's on XenServer in a Basic networking zone require a link-local address AND a private IP from the management range? Best regards, David Comerford ------------------------ Tel: +353 87 1238295 Email: davest...@gmail.com<mailto:davest...@gmail.com> Website: http://dave.ie GPG key: http://gpg.dave.ie This email and any attachments to it may be confidential and are intended solely for the use of the individual to whom it is addressed. Any views or opinions expressed are solely those of the author and do not necessarily represent those of Shape Blue Ltd or related companies. If you are not the intended recipient of this email, you must neither take any action based upon its contents, nor copy or show it to anyone. Please contact the sender if you believe you have received this email in error. Shape Blue Ltd is a company incorporated in England & Wales. ShapeBlue Services India LLP is a company incorporated in India and is operated under license from Shape Blue Ltd. Shape Blue Brasil Consultoria Ltda is a company incorporated in Brasil and is operated under license from Shape Blue Ltd. ShapeBlue is a registered trademark.
