{"id":1018,"date":"2008-03-14T13:17:55","date_gmt":"2008-03-14T13:17:55","guid":{"rendered":"http:\/\/www.markwilson.co.uk\/blog\/2008\/03\/hyper-v-and-networking.htm"},"modified":"2008-04-06T15:00:38","modified_gmt":"2008-04-06T15:00:38","slug":"hyper-v-and-networking","status":"publish","type":"post","link":"https:\/\/www.markwilson.co.uk\/blog\/2008\/03\/hyper-v-and-networking.htm","title":{"rendered":"Hyper-V and networking"},"content":{"rendered":"<p>For those who have worked with hosted virtualisation (Microsoft Virtual PC and Virtual Server, VMware Workstation and Server, Parallels Desktop, etc.) and haven&#8217;t experienced hypervisor-based virtualisation, <a href=\"https:\/\/www.markwilson.co.uk\/blog\/2007\/10\/windows-server-virtualization-unwrapped.htm\">Microsoft Hyper-V is fundamentally different in a number of ways<\/a>.  Architecturally, it&#8217;s not dissimilar to the <a href=\"https:\/\/www.markwilson.co.uk\/blog\/2007\/10\/low-cost-enterprise-virtualisation-from-xensource.htm\">Xen hypervisor<\/a> (in fact, there are a lot of similarities between the two) and Xen&#8217;s domain 0 is analogous to the parent partition in Hyper-V (effectively, when the Hyper-V role is added to a Windows Server 2008 computer, the hypervisor is &#8220;slid&#8221; underneath the existing Windows installation and that becomes the parent partition).  Subsequent virtual machines running on Hyper-V are known as child partitions.<\/p>\n<p>In this approach, a new virtual switch (vswitch) is created and the physical network adapter (pNIC) is unbound from all clients, services and protocols, except the Microsoft Virtual Network Switch Protocol.  The virtual network adapters (vNICs) in the parent and child partitions connect to the vswitch.  Further vswitches may be created for internal communications, or bound to additional pNICs; however only one vswitch can be bound to a particular pNIC at any one time.  Virtual machines can have multiple vNICs connected to multiple vswitches.  Ben Armstrong has <a href=\"http:\/\/blogs.msdn.com\/virtual_pc_guy\/archive\/2008\/01\/08\/understanding-networking-with-hyper-v.aspx\">a good explanation of Hyper-V networking (with pictures)<\/a> on his blog.<\/p>\n<p>One exception relates to the connection of virtual machines to wireless network adapters (not a common server scenario, but nevertheless useful when Windows Server 2008 is running on a notebook PC).  The workaround is to <a href=\"http:\/\/blogs.msdn.com\/virtual_pc_guy\/archive\/2008\/01\/09\/using-hyper-v-with-a-wireless-network-adapter.aspx\">use Internet connection sharing (ICS) on the wireless pNIC and to connect that to a vswitch configured for internal networking in Hyper-V<\/a>.  Effectively, the <a href=\"http:\/\/en.wikipedia.org\/wiki\/Internet_Connection_Sharing\">ICS<\/a> connection becomes a DHCP server for the 192.168.0.0\/24 network, presented via the internal vswitch and I&#8217;m pleased to find that the same principle can be applied to mobile data cards.  Interestingly, Hyper-V seems quite happy to bind directly to a Bluetooth connection.<\/p>\n<p><img data-recalc-dims=\"1\" decoding=\"async\" alt=\"Hyper-V network connection example\" class=\"inline\" src=\"https:\/\/i0.wp.com\/www.markwilson.co.uk\/blog\/images\/hyper-v-network-connections.png?w=700&#038;ssl=1\" \/><\/p>\n<p>Using this approach, on my system, the various network adapters are as follows:<\/p>\n<ul>\n<li>Dial-up adapters, including an HSDPA\/HSUPA modem which I have shared to allow a VMs to connect to mobile networks in place of wired Ethernet.<\/li>\n<li>Local Area Connection &#8211; the pNIC in my notebook PC, bound only to to the Microsoft Virtual Network Switch Protocol.<br \/>\nWireless Network Connection &#8211; the WiFi adapter in my notebook PC (if there was WiFi connectivity where I am today then this could have been shared instead of the data card.<\/li>\n<li>Local Area Connection 3 &#8211; the Bluetooth adapter in my notebook PC.<\/li>\n<li>Local Area Connection 4 &#8211; the external vswitch in my Hyper-V installation, connected to the external network via the pNIC.<\/li>\n<li>Local Area Connection 5 &#8211; another vswitch in my Hyper-V installation, operating as an internal network, but connected using the method above to the shared HSDPA\/HSUPA modem.<\/li>\n<\/ul>\n<p>This gives me plenty of flexibility for connectivity and has the useful side-effect of allowing me to circumvent the port security which I suspect is the cause of my frequent disconnections at work because the physical switches are configured to block any device presenting multiple MAC addresses for the same port.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>For those who have worked with hosted virtualisation (Microsoft Virtual PC and Virtual Server, VMware Workstation and Server, Parallels Desktop, etc.) and haven&#8217;t experienced hypervisor-based virtualisation, Microsoft Hyper-V is fundamentally different in a number of ways. Architecturally, it&#8217;s not dissimilar to the Xen hypervisor (in fact, there are a lot of similarities between the two) &hellip; <a href=\"https:\/\/www.markwilson.co.uk\/blog\/2008\/03\/hyper-v-and-networking.htm\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Hyper-V and networking<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[],"tags":[115,76,18,23],"class_list":["post-1018","post","type-post","status-publish","format-standard","hentry","tag-bluetooth","tag-hyper-v","tag-mobility","tag-wireless"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Hyper-V and networking - markwilson.it<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.markwilson.co.uk\/blog\/2008\/03\/hyper-v-and-networking.htm\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hyper-V and networking - markwilson.it\" \/>\n<meta property=\"og:description\" content=\"For those who have worked with hosted virtualisation (Microsoft Virtual PC and Virtual Server, VMware Workstation and Server, Parallels Desktop, etc.) and haven&#8217;t experienced hypervisor-based virtualisation, Microsoft Hyper-V is fundamentally different in a number of ways. Architecturally, it&#8217;s not dissimilar to the Xen hypervisor (in fact, there are a lot of similarities between the two) &hellip; Continue reading Hyper-V and networking\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.markwilson.co.uk\/blog\/2008\/03\/hyper-v-and-networking.htm\" \/>\n<meta property=\"og:site_name\" content=\"markwilson.it\" \/>\n<meta property=\"article:published_time\" content=\"2008-03-14T13:17:55+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2008-04-06T15:00:38+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.markwilson.co.uk\/blog\/images\/hyper-v-network-connections.png\" \/>\n<meta name=\"author\" content=\"Mark Wilson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@markwilsonit\" \/>\n<meta name=\"twitter:site\" content=\"@markwilsonit\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Mark Wilson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2008\\\/03\\\/hyper-v-and-networking.htm#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2008\\\/03\\\/hyper-v-and-networking.htm\"},\"author\":{\"name\":\"Mark Wilson\",\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/#\\\/schema\\\/person\\\/98f61365e7c39d6be942174b8c4de468\"},\"headline\":\"Hyper-V and networking\",\"datePublished\":\"2008-03-14T13:17:55+00:00\",\"dateModified\":\"2008-04-06T15:00:38+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2008\\\/03\\\/hyper-v-and-networking.htm\"},\"wordCount\":506,\"commentCount\":1,\"publisher\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/#\\\/schema\\\/person\\\/98f61365e7c39d6be942174b8c4de468\"},\"image\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2008\\\/03\\\/hyper-v-and-networking.htm#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/images\\\/hyper-v-network-connections.png\",\"keywords\":[\"Bluetooth\",\"Microsoft Virtual Server\\\/Hyper-V\",\"Mobility\",\"Wi-Fi\"],\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2008\\\/03\\\/hyper-v-and-networking.htm#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2008\\\/03\\\/hyper-v-and-networking.htm\",\"url\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2008\\\/03\\\/hyper-v-and-networking.htm\",\"name\":\"Hyper-V and networking - markwilson.it\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2008\\\/03\\\/hyper-v-and-networking.htm#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2008\\\/03\\\/hyper-v-and-networking.htm#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/images\\\/hyper-v-network-connections.png\",\"datePublished\":\"2008-03-14T13:17:55+00:00\",\"dateModified\":\"2008-04-06T15:00:38+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2008\\\/03\\\/hyper-v-and-networking.htm#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2008\\\/03\\\/hyper-v-and-networking.htm\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2008\\\/03\\\/hyper-v-and-networking.htm#primaryimage\",\"url\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/images\\\/hyper-v-network-connections.png\",\"contentUrl\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/images\\\/hyper-v-network-connections.png\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2008\\\/03\\\/hyper-v-and-networking.htm#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Hyper-V and networking\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/#website\",\"url\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/\",\"name\":\"markwilson.it\",\"description\":\"get-info -class technology | write-output &gt; 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Architecturally, Hyper-V has a lot more in common with the Xen hypervisor\u2026","rel":"","context":"In \"Citrix Xen\"","block_context":{"text":"Citrix Xen","link":"https:\/\/www.markwilson.co.uk\/blog\/tag\/xen"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1094,"url":"https:\/\/www.markwilson.co.uk\/blog\/2008\/06\/microsoft-releases-hyper-v-to-manufacturing.htm","url_meta":{"origin":1018,"position":1},"title":"Microsoft releases Hyper-V to manufacturing","author":"Mark Wilson","date":"Thursday 26 June 2008","format":false,"excerpt":"When Windows Server 2008 shipped with only a beta version of the new \"Hyper-V\" virtualisation role in the box Microsoft undertook to release a final version within 180 days. 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After the recent announcement of a beta for Microsoft System Center Virtual Machine Manager (SCVMM) 2008 R2, I decided to read up on the official announcement\u2026","rel":"","context":"In \"Citrix Essentials\"","block_context":{"text":"Citrix Essentials","link":"https:\/\/www.markwilson.co.uk\/blog\/tag\/essentials"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":2323,"url":"https:\/\/www.markwilson.co.uk\/blog\/2011\/02\/hyper-v-r2-service-pack-1-dynamic-memory-remotefx-and-virtual-desktops.htm","url_meta":{"origin":1018,"position":3},"title":"Hyper-V R2 service pack 1, Dynamic Memory, RemoteFX and virtual desktops","author":"Mark Wilson","date":"Wednesday 9 February 2011","format":false,"excerpt":"I have to admit that I've tuned out a bit on the virtualisation front over the last year.\u00c2\u00a0 It seems that some vendors are ramming VDI down our throats as the answer to everything; meanwhile others are confusing virtualisation with \"the cloud\".\u00c2\u00a0 I'm also doing less hands-on work with technology\u2026","rel":"","context":"In \"Citrix\"","block_context":{"text":"Citrix","link":"https:\/\/www.markwilson.co.uk\/blog\/tag\/citrix"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1225,"url":"https:\/\/www.markwilson.co.uk\/blog\/2008\/09\/microsoft-virtualization-part-2-host-virtualisation.htm","url_meta":{"origin":1018,"position":4},"title":"Microsoft Virtualization: part 2 (host virtualisation)","author":"Mark Wilson","date":"Thursday 25 September 2008","format":false,"excerpt":"Earlier this evening I kicked off a series of posts on the various technologies that are collectively known as Microsoft Virtualization and the first area I'm going to examine is that of server, or host, virtualisation. Whilst competitors like VMware have been working in the x86 virtualisation space since 1998,\u2026","rel":"","context":"In \"Microsoft Virtual PC\"","block_context":{"text":"Microsoft Virtual PC","link":"https:\/\/www.markwilson.co.uk\/blog\/tag\/virtual-pc"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1273,"url":"https:\/\/www.markwilson.co.uk\/blog\/2008\/11\/running-vmware-server-on-top-of-hyper-v-or-not.htm","url_meta":{"origin":1018,"position":5},"title":"Running VMware Server on top of Hyper-V&#8230; or not","author":"Mark Wilson","date":"Thursday 6 November 2008","format":false,"excerpt":"A few days ago, I came across a couple of blog posts about how VMware Server won't run on top of Hyper-V. Frankly, I'm amazed that any hosted virtualisation product (like VMware Server) will run on top of any hypervisor - I always understood that hosted virtualisation required so many\u2026","rel":"","context":"In \"Microsoft Virtual PC\"","block_context":{"text":"Microsoft Virtual PC","link":"https:\/\/www.markwilson.co.uk\/blog\/tag\/virtual-pc"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/posts\/1018","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/comments?post=1018"}],"version-history":[{"count":0,"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/posts\/1018\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/media?parent=1018"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/categories?post=1018"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/tags?post=1018"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}