{"id":1421,"date":"2020-05-27T16:14:41","date_gmt":"2020-05-27T14:14:41","guid":{"rendered":"https:\/\/itsimple.info\/?p=1421"},"modified":"2020-05-27T16:14:43","modified_gmt":"2020-05-27T14:14:43","slug":"windows-2019-network-is-slow-on-hyper-v-2019","status":"publish","type":"post","link":"https:\/\/itsimple.info\/?p=1421","title":{"rendered":"Windows 2019 Network IS SLOW ON HYPER-V 2019"},"content":{"rendered":"

VM 2019 hosted on Hyper-v 2019 can have serious network performance issue . While windows 2008 to Windows 2012 R2 work just fine and fast !<\/p>\n

I have found that fine tuning the TCP settings can resolve the issue, in my case it was CUBIC settings.<\/p>\n

CUBIC<\/b>\u00a0is an implementation of TCP with an optimized congestion control algorithm for high bandwidth\u00a0networks<\/b>\u00a0with high latency (LFN: long fat\u00a0networks<\/b>).\u00a0CUBIC<\/b>\u00a0TCP is implemented and used by default in Linux kernels 2.6. 19 and above, as well as Windows 10.1709 Fall Creators Update, and Windows Server 2016 1709 update<\/p>\n

Try to change the setting to CTCP Short for\u00a0client-to-client protocol<\/b> :<\/p>\n

(run as administrator)<\/p>\n

netsh int tcp set supplemental template=internet congestionprovider=CTCP\nnetsh int tcp set supplemental template=internetcustom congestionprovider=CTCP\nnetsh int tcp set supplemental template=Datacenter congestionprovider=DCTCP\nnetsh int tcp set supplemental template=Datacentercustom congestionprovider=DCTCP\n\n<\/pre>\n
To change Back to CUBIC<\/p>\n
netsh int tcp set supplemental template=internet congestionprovider=CUBIC\nnetsh int tcp set supplemental template=internetcustom congestionprovider=CUBIC\nnetsh int tcp set supplemental template=Datacenter congestionprovider=CUBIC\nnetsh int tcp set supplemental template=Datacentercustom congestionprovider=CUBIC<\/pre>\n
\n
Good Luck<\/h3>\n","protected":false},"excerpt":{"rendered":"
VM 2019 hosted on Hyper-v 2019 can have serious network performance issue . While windows 2008 to Windows 2012 R2 work just fine and fast ! I have found that fine tuning the TCP settings can resolve the issue, in my case it was CUBIC settings. CUBIC\u00a0is an implementation of TCP with an optimized congestion […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20,21,4,18,14,15],"tags":[],"class_list":["post-1421","post","type-post","status-publish","format-standard","hentry","category-hyper-v","category-operating-systems","category-tech","category-virtualization","category-windows","category-windows-server"],"_links":{"self":[{"href":"https:\/\/itsimple.info\/index.php?rest_route=\/wp\/v2\/posts\/1421","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itsimple.info\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itsimple.info\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itsimple.info\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/itsimple.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1421"}],"version-history":[{"count":0,"href":"https:\/\/itsimple.info\/index.php?rest_route=\/wp\/v2\/posts\/1421\/revisions"}],"wp:attachment":[{"href":"https:\/\/itsimple.info\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1421"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itsimple.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1421"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itsimple.info\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1421"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}