{"id":2251,"date":"2025-04-26T14:04:53","date_gmt":"2025-04-26T18:04:53","guid":{"rendered":"https:\/\/enterpriseadmins.org\/blog\/?p=2251"},"modified":"2025-04-26T14:04:53","modified_gmt":"2025-04-26T18:04:53","slug":"how-to-increase-vmxnet3-link-speed-for-nested-esxi-hosts","status":"publish","type":"post","link":"https:\/\/enterpriseadmins.org\/blog\/virtualization\/how-to-increase-vmxnet3-link-speed-for-nested-esxi-hosts\/","title":{"rendered":"How to Increase VMXNET3 Link Speed for Nested ESXi Hosts"},"content":{"rendered":"\n

I recently came across a KB article (https:\/\/knowledge.broadcom.com\/external\/article\/368812\/how-to-change-the-vmxnet3-link-speed-of.html<\/a>) that describes how to set the link speed of a vmxnet3 network adapter higher than the default 10 Gbps speed. In my lab I have several nested ESXi hosts and wanted to give this a try. <\/p>\n\n\n\n

I powered down a nested host, edited the virtual machine settings, and added the advanced option ethernet0.linkspeed<\/code>, setting its value to 25000<\/code> as pictured below.<\/p>\n\n\n\n

\"ethernet0.linkspeed<\/a><\/figure>\n\n\n\n

After powering the virtual machine back on, I checked the ESXi network settings in vCenter and confirmed that the updated link speed was reflected, pictured below.<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

Expanding the vmnic0<\/code> details, I could see the adapter was still of type vmxnet3<\/code>, and the link speed was correctly set to the specified value.<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

Conclusion<\/h2>\n\n\n\n

Updating virtual machine link speeds work for nested ESXi hosts as well. The valid range for linkspeed<\/code> is 10000<\/strong> to 65000<\/strong>. This makes common speeds, like 25 Gbps<\/strong> and 40 Gbps<\/strong> possible. <\/p>\n","protected":false},"excerpt":{"rendered":"

I recently came across a KB article (https:\/\/knowledge.broadcom.com\/external\/article\/368812\/how-to-change-the-vmxnet3-link-speed-of.html) that describes how to set the link speed of a vmxnet3 network adapter higher than the default 10 Gbps speed. In my lab I have several nested ESXi hosts and wanted to … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[9,4],"tags":[],"class_list":["post-2251","post","type-post","status-publish","format-standard","hentry","category-lab-infrastructure","category-virtualization"],"_links":{"self":[{"href":"https:\/\/enterpriseadmins.org\/blog\/wp-json\/wp\/v2\/posts\/2251","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/enterpriseadmins.org\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/enterpriseadmins.org\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/enterpriseadmins.org\/blog\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/enterpriseadmins.org\/blog\/wp-json\/wp\/v2\/comments?post=2251"}],"version-history":[{"count":2,"href":"https:\/\/enterpriseadmins.org\/blog\/wp-json\/wp\/v2\/posts\/2251\/revisions"}],"predecessor-version":[{"id":2256,"href":"https:\/\/enterpriseadmins.org\/blog\/wp-json\/wp\/v2\/posts\/2251\/revisions\/2256"}],"wp:attachment":[{"href":"https:\/\/enterpriseadmins.org\/blog\/wp-json\/wp\/v2\/media?parent=2251"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/enterpriseadmins.org\/blog\/wp-json\/wp\/v2\/categories?post=2251"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/enterpriseadmins.org\/blog\/wp-json\/wp\/v2\/tags?post=2251"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}