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    <title>topic Re: 10gb network link does not achieve the best speed in vSphere™ vNetwork Discussions</title>
    <link>https://communities.vmware.com/t5/vSphere-vNetwork-Discussions/10gb-network-link-does-not-achieve-the-best-speed/m-p/2986550#M14776</link>
    <description>&lt;P&gt;I tried to change MTU to 9000 on vswitch's, same result.&amp;nbsp;&lt;/P&gt;&lt;P&gt;I try to change to jumbo frames on switch cisco 10gb?&lt;/P&gt;</description>
    <pubDate>Wed, 13 Sep 2023 13:23:32 GMT</pubDate>
    <dc:creator>Kaganew</dc:creator>
    <dc:date>2023-09-13T13:23:32Z</dc:date>
    <item>
      <title>10gb network link does not achieve the best speed</title>
      <link>https://communities.vmware.com/t5/vSphere-vNetwork-Discussions/10gb-network-link-does-not-achieve-the-best-speed/m-p/2960870#M14654</link>
      <description>&lt;P&gt;I have a Dell PowerEdge R740 server with a 10GB NIC and a 10GB Switch, the VM detects the 10 Gb link but when doing speed tests with the iperf tool I don't get a measure of even close to 10 GB, the maximum it can achieve They are 900Mb, please suggest me how I can resolve this situation.&lt;BR /&gt;thank you&lt;/P&gt;</description>
      <pubDate>Fri, 24 Mar 2023 19:04:35 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/vSphere-vNetwork-Discussions/10gb-network-link-does-not-achieve-the-best-speed/m-p/2960870#M14654</guid>
      <dc:creator>oliver19</dc:creator>
      <dc:date>2023-03-24T19:04:35Z</dc:date>
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    <item>
      <title>Re: 10gb network link does not achieve the best speed</title>
      <link>https://communities.vmware.com/t5/vSphere-vNetwork-Discussions/10gb-network-link-does-not-achieve-the-best-speed/m-p/2986499#M14773</link>
      <description>&lt;P&gt;Hi, i have the same problem, i have 3 host with esxi 8.0 and one host qwith vcenter server. 10gb ethernet cards with a cisco 10gb switch and i test with iperf in two VM get the same 900mb. The VM's have the ethernet adapter VMXNET3, the esxi nic's have 10000mbps full.&lt;/P&gt;</description>
      <pubDate>Wed, 13 Sep 2023 10:37:40 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/vSphere-vNetwork-Discussions/10gb-network-link-does-not-achieve-the-best-speed/m-p/2986499#M14773</guid>
      <dc:creator>Kaganew</dc:creator>
      <dc:date>2023-09-13T10:37:40Z</dc:date>
    </item>
    <item>
      <title>Re: 10gb network link does not achieve the best speed</title>
      <link>https://communities.vmware.com/t5/vSphere-vNetwork-Discussions/10gb-network-link-does-not-achieve-the-best-speed/m-p/2986500#M14774</link>
      <description>&lt;P&gt;Which vSphere version we are discussing?&amp;nbsp;&lt;/P&gt;&lt;P&gt;What type of switch you have in cluster? vSwitch on each host or dVS?&amp;nbsp;&lt;/P&gt;</description>
      <pubDate>Wed, 13 Sep 2023 10:40:49 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/vSphere-vNetwork-Discussions/10gb-network-link-does-not-achieve-the-best-speed/m-p/2986500#M14774</guid>
      <dc:creator>maksym007</dc:creator>
      <dc:date>2023-09-13T10:40:49Z</dc:date>
    </item>
    <item>
      <title>Re: 10gb network link does not achieve the best speed</title>
      <link>https://communities.vmware.com/t5/vSphere-vNetwork-Discussions/10gb-network-link-does-not-achieve-the-best-speed/m-p/2986511#M14775</link>
      <description>&lt;P&gt;Have you tried setting MTU to 9000 to enable Jumbo Frames?&lt;/P&gt;</description>
      <pubDate>Wed, 13 Sep 2023 11:09:18 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/vSphere-vNetwork-Discussions/10gb-network-link-does-not-achieve-the-best-speed/m-p/2986511#M14775</guid>
      <dc:creator>battybishop</dc:creator>
      <dc:date>2023-09-13T11:09:18Z</dc:date>
    </item>
    <item>
      <title>Re: 10gb network link does not achieve the best speed</title>
      <link>https://communities.vmware.com/t5/vSphere-vNetwork-Discussions/10gb-network-link-does-not-achieve-the-best-speed/m-p/2986550#M14776</link>
      <description>&lt;P&gt;I tried to change MTU to 9000 on vswitch's, same result.&amp;nbsp;&lt;/P&gt;&lt;P&gt;I try to change to jumbo frames on switch cisco 10gb?&lt;/P&gt;</description>
      <pubDate>Wed, 13 Sep 2023 13:23:32 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/vSphere-vNetwork-Discussions/10gb-network-link-does-not-achieve-the-best-speed/m-p/2986550#M14776</guid>
      <dc:creator>Kaganew</dc:creator>
      <dc:date>2023-09-13T13:23:32Z</dc:date>
    </item>
    <item>
      <title>Re: 10gb network link does not achieve the best speed</title>
      <link>https://communities.vmware.com/t5/vSphere-vNetwork-Discussions/10gb-network-link-does-not-achieve-the-best-speed/m-p/2986559#M14777</link>
      <description>&lt;P&gt;Hi,&lt;BR /&gt;&lt;BR /&gt;did you check if your network is in a good shape?&lt;BR /&gt;&lt;SPAN&gt;esxcli network nic stats get -n vmnic&lt;/SPAN&gt;&lt;FONT color="#FF0000"&gt;&lt;U&gt;&lt;STRONG&gt;&lt;EM&gt;X&lt;/EM&gt;&lt;/STRONG&gt;&lt;/U&gt;&lt;/FONT&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Pause frames might be responsible for a lower throughput.&lt;BR /&gt;&lt;A href="https://kb.vmware.com/s/article/1013413" target="_self"&gt;Configuring Flow Control on VMware ESXi and VMware ESX&lt;/A&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;And of course you should check if your LAN switch isn't the bottleneck, I assume you're not connected via a Cisco Fabric Extender.&lt;BR /&gt;To achieve full performance the LAN Switch should have a non-blocking architecture and a NPU shared switch buffer of at least 16 MB.&lt;/P&gt;</description>
      <pubDate>Wed, 13 Sep 2023 13:56:02 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/vSphere-vNetwork-Discussions/10gb-network-link-does-not-achieve-the-best-speed/m-p/2986559#M14777</guid>
      <dc:creator>kastlr</dc:creator>
      <dc:date>2023-09-13T13:56:02Z</dc:date>
    </item>
    <item>
      <title>Re: 10gb network link does not achieve the best speed</title>
      <link>https://communities.vmware.com/t5/vSphere-vNetwork-Discussions/10gb-network-link-does-not-achieve-the-best-speed/m-p/2986588#M14778</link>
      <description>&lt;P&gt;Hi,&amp;nbsp; its&amp;nbsp;&lt;SPAN&gt;VMware vSphere 8 Essentials Plus Kit for 3 host.&amp;nbsp;&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&lt;SPAN&gt;Vswitch on all host's&lt;/SPAN&gt;&lt;/P&gt;</description>
      <pubDate>Wed, 13 Sep 2023 15:05:33 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/vSphere-vNetwork-Discussions/10gb-network-link-does-not-achieve-the-best-speed/m-p/2986588#M14778</guid>
      <dc:creator>Kaganew</dc:creator>
      <dc:date>2023-09-13T15:05:33Z</dc:date>
    </item>
    <item>
      <title>Re: 10gb network link does not achieve the best speed</title>
      <link>https://communities.vmware.com/t5/vSphere-vNetwork-Discussions/10gb-network-link-does-not-achieve-the-best-speed/m-p/2986599#M14779</link>
      <description>&lt;P&gt;I test the two nics:&lt;/P&gt;&lt;P&gt;esxcli network nic stats get -n vmnic2&lt;BR /&gt;NIC statistics for vmnic2&lt;BR /&gt;Packets received: 244698&lt;BR /&gt;Packets sent: 25095&lt;BR /&gt;Bytes received: 42893114&lt;BR /&gt;Bytes sent: 35118082&lt;BR /&gt;Receive packets dropped: 0&lt;BR /&gt;Transmit packets dropped: 0&lt;BR /&gt;Multicast packets received: 112842&lt;BR /&gt;Broadcast packets received: 120895&lt;BR /&gt;Multicast packets sent: 0&lt;BR /&gt;Broadcast packets sent: 35&lt;BR /&gt;Total receive errors: 0&lt;BR /&gt;Receive length errors: 0&lt;BR /&gt;Receive over errors: 0&lt;BR /&gt;Receive CRC errors: 0&lt;BR /&gt;Receive frame errors: 0&lt;BR /&gt;Receive FIFO errors: 0&lt;BR /&gt;Receive missed errors: 0&lt;BR /&gt;Total transmit errors: 0&lt;BR /&gt;Transmit aborted errors: 0&lt;BR /&gt;Transmit carrier errors: 0&lt;BR /&gt;Transmit FIFO errors: 0&lt;BR /&gt;Transmit heartbeat errors: 0&lt;BR /&gt;Transmit window errors: 0&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;esxcli network nic stats get -n vmnic3&lt;BR /&gt;NIC statistics for vmnic3&lt;BR /&gt;Packets received: 441773&lt;BR /&gt;Packets sent: 200452&lt;BR /&gt;Bytes received: 183003408&lt;BR /&gt;Bytes sent: 75958843&lt;BR /&gt;Receive packets dropped: 0&lt;BR /&gt;Transmit packets dropped: 0&lt;BR /&gt;Multicast packets received: 113260&lt;BR /&gt;Broadcast packets received: 121223&lt;BR /&gt;Multicast packets sent: 99&lt;BR /&gt;Broadcast packets sent: 248&lt;BR /&gt;Total receive errors: 0&lt;BR /&gt;Receive length errors: 0&lt;BR /&gt;Receive over errors: 0&lt;BR /&gt;Receive CRC errors: 0&lt;BR /&gt;Receive frame errors: 0&lt;BR /&gt;Receive FIFO errors: 0&lt;BR /&gt;Receive missed errors: 0&lt;BR /&gt;Total transmit errors: 0&lt;BR /&gt;Transmit aborted errors: 0&lt;BR /&gt;Transmit carrier errors: 0&lt;BR /&gt;Transmit FIFO errors: 0&lt;BR /&gt;Transmit heartbeat errors: 0&lt;BR /&gt;Transmit window errors: 0&lt;/P&gt;</description>
      <pubDate>Wed, 13 Sep 2023 15:31:50 GMT</pubDate>
      <guid>https://communities.vmware.com/t5/vSphere-vNetwork-Discussions/10gb-network-link-does-not-achieve-the-best-speed/m-p/2986599#M14779</guid>
      <dc:creator>Kaganew</dc:creator>
      <dc:date>2023-09-13T15:31:50Z</dc:date>
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