Comments on: What is the Hyper-V Virtual Switch and How Does it Work? https://www.altaro.com/hyper-v/the-hyper-v-virtual-switch-explained-part-1/ Hyper-V guides, how-tos, tips, and expert advice for system admins and IT professionals Wed, 31 Mar 2021 06:24:15 +0000 hourly 1 By: Eric Siron https://www.altaro.com/hyper-v/the-hyper-v-virtual-switch-explained-part-1/#comment-3884 Fri, 12 Mar 2021 18:19:00 +0000 http://hub.altaro.com/hyper-v/?p=2152#comment-3884 In reply to Dwayne.

This implementation only calls for one virtual switch.

]]> By: Dwayne https://www.altaro.com/hyper-v/the-hyper-v-virtual-switch-explained-part-1/#comment-3851 Fri, 29 Jan 2021 14:34:00 +0000 http://hub.altaro.com/hyper-v/?p=2152#comment-3851 Building a test Hyper-v server using Server 2016. Server has 8 NIC ports. Looking to install 6 various servers. What I am reading is that I want to create just one virtual switch rather than creating 6 virtual switches. one for each server and 2 for the host server?

]]> By: Eric Siron https://www.altaro.com/hyper-v/the-hyper-v-virtual-switch-explained-part-1/#comment-3752 Tue, 29 Sep 2020 05:22:00 +0000 http://hub.altaro.com/hyper-v/?p=2152#comment-3752 In reply to Sumer.

I have not seen any evidence that it cares one way or another about protocols. It passes Ethernet frames.

]]> By: Sumer https://www.altaro.com/hyper-v/the-hyper-v-virtual-switch-explained-part-1/#comment-3749 Thu, 24 Sep 2020 08:48:00 +0000 http://hub.altaro.com/hyper-v/?p=2152#comment-3749 What are the PROTOCOLS on which HyperV switches work on ??

]]> By: Kathyrn Emberley https://www.altaro.com/hyper-v/the-hyper-v-virtual-switch-explained-part-1/#comment-3706 Sun, 19 Jul 2020 21:38:00 +0000 http://hub.altaro.com/hyper-v/?p=2152#comment-3706 Refreshing. You never diissapoint. Thank you for sharing..

]]> By: Hairstyles https://www.altaro.com/hyper-v/the-hyper-v-virtual-switch-explained-part-1/#comment-3697 Tue, 07 Jul 2020 04:51:00 +0000 http://hub.altaro.com/hyper-v/?p=2152#comment-3697 What I have seen in terms of personal computer memory is the fact there are specifications such as SDRAM, DDR or anything else, that must match the specs of the motherboard. If the personal computer’s motherboard is reasonably current while there are no os issues, improving the storage space literally requires under an hour or so. It’s one of the easiest laptop upgrade processes one can picture. Thanks for revealing your ideas.

]]> By: Eric Siron https://www.altaro.com/hyper-v/the-hyper-v-virtual-switch-explained-part-1/#comment-3648 Thu, 07 May 2020 15:57:00 +0000 http://hub.altaro.com/hyper-v/?p=2152#comment-3648 In reply to Sandro SILVESTRE.

No ideas, unfortunately. I know that the world is moving to IPv6, but I am still disabling it on server endpoints. I’m not going to justify or defend that practice. I just… don’t have any internal use for IPv6, I can easily memorize my personal network’s layout on IPv4, and so far, nothing bad has happened to me for staying on IPv4. So, I don’t have any experience at all with what you’re trying to do. But, Wireshark on the host should see IPv6 traffic moving across the physical endpoints.

]]> By: Sandro SILVESTRE https://www.altaro.com/hyper-v/the-hyper-v-virtual-switch-explained-part-1/#comment-3607 Wed, 01 Apr 2020 20:24:00 +0000 http://hub.altaro.com/hyper-v/?p=2152#comment-3607 Hi Eric,

Thanks for such quality piece of work! Outstanding! Not only you are precise and accurate, you shared with us your invaluable experience. In fact, I saved this for further reference.

I have a point: unless I am doing something totally dumb, I see no IPv6 traffic passing through vSwitch. I tested both Internal and External types as well as the so-called Default Switch.

For instance, I noticed there is no IPv6 gateway address on vNICs connected to external vSwitch. And I do have a DHCPv6 up and running on the network.

Any idea?

]]> By: Eric Siron https://www.altaro.com/hyper-v/the-hyper-v-virtual-switch-explained-part-1/#comment-3561 Tue, 17 Mar 2020 03:39:00 +0000 http://hub.altaro.com/hyper-v/?p=2152#comment-3561 In reply to Justin.

That looks fine to me.
You can disable VMQ at any time. If you forget, you might have some inexplicable packet loss for a while. Disabling VMQ takes a minor outage on the affected NIC, but it’s less than the effect of bad VMQ.

]]> By: Justin https://www.altaro.com/hyper-v/the-hyper-v-virtual-switch-explained-part-1/#comment-3557 Tue, 10 Mar 2020 16:11:00 +0000 http://hub.altaro.com/hyper-v/?p=2152#comment-3557 Hi Eric,

Per usual, great article. Wanted to confirm that I’m following your advice correctly:

Goal is to setup a single Server 2019 Hyper-V host to run a handful of web servers.

I have 2 physical dual port adapters (Broadcom 5720 1GB)
I’m going to add the 2 adapters (all 4 NICs) into one converged NIC team.
From there, I’ll make sure that the physical NICs and MS team adapter have all instances of VMQ disabled.
I’ll then create my External vSwitch, connected to the team adapter, allowing the management OS to “share” via the vSwitch. I can then set my static IP for the management OS adapter (vEthernet).

Missing anything? Also, is there anything in the order of configuration that would cause issue if the team and vSwitch we created first? Like if you were to realize the physical NICs had VMQ enabled during the initial setup?

Thanks for your time and knowledge!

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