Guest Slow Network Connection with Jumbo Packets

I have enabled jumbo packets everywhere in my network.

I verified that jumbo packets are enabled on the Hyper-V host physical NICs and Hyper-V virtual switch.

I tested pinging full size frames with no fragmenting from the Hyper-V host to another physical machine.

I tested Internet downloads from the Hyper-V host at full speed.

Inside the Hyper-V guest, if I leave jumbo packets disabled, all is fine.

If I switch the guest to 4K or 9K jumbo packets I get extremely slow LAN and WAN speeds.

Has anyone run into this before?


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New KB articles published for the week ending 8th December,2019

VMware Cloud on AWS VMware Cloud on AWS - VMs running on VMC can’t communicate with connected Amazon VPC network Published Date:02-12-2019 [VMC on AWS] Programmatically finding if a specific vCenter is hosted in a VMC on AWS SDDC Published Date:03-12-2019 [VMC on AWS] Update DNS settings for the On-Premise HCX Manager Published Date:05-12-2019 VMware

The post New KB articles published for the week ending 8th December,2019 appeared first on VMware Support Insider.

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a virtual machine resource was not found in clustered virtual machine

Hi guys, I’,m doing a cluster to cluster replication, and created a DR and PR replication broker. I’m doing an initial replication, but i get the error "a virtual machine resource was not found in clustered virtual machine"

Might this be due to different VSwitch Names for both PR and DR? I cant figure out what’s causing this

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hyper v ubuntu vm stuck in restoring

how can i get out from this state? can’t stop, can’t kill the process.

any advice?

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Two dhcp servers one virtual switch on Hyper-V

Hey guys, I’m looking to solve this riddle, but I’m stuck and can find a solution, I wonder if is possible to have two subnet both servers have AD/DC/DNS/DHCP roles in the same virtual switch in Hyper-V.



VM1 server IP configuration

VM2 server IP configuration

the second one, won’t resolve the configuration.

Is this configuration possible?

Thank you in advance.


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Top 20 articles for vSphere, November 2019

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Restarting the Management agents in ESXi Transferring files through vSphere Client might fail Excessive Hardware health alarms being triggered for “Sensor -1 type” on ESXi hosts running vSphere 6.7 U3 “503 service unavailable” error when connecting to the vCenter Server using the vSphere Web Client How to reset the lost or forgotten root password in

The post Top 20 articles for vSphere, November 2019 appeared first on VMware Support Insider.

Top 20 articles for NSX, November 2019

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Status of TLSv1.1/1.2 Enablement and TLSv1.0 Disablement across VMware products Guest Introspection status reports “Warning: Guest Introspection service not ready” “No NSX Managers available” error in the vSphere Web Client vCenter Server or Platform Services Controller certificate validation error for external VMware Solutions in vSphere 6.0 NSX-T admin password expired After upgrading to NSX-v 6.4.0,

The post Top 20 articles for NSX, November 2019 appeared first on VMware Support Insider.

Isolate local VLAN traffic from office network

I have just set up a Hyper-V VLAN on my office workstation for the purpose of testing network changes prior to implementation. The VLAN has a host server running Windows Server 2016 with DHCP, DNS, Windows Deployment Service and Active Directory. There are
also 2 clients running Windows 10. Currently the VLAN is on a Private switch, so there is no risk of my VLAN traffic bleeding into my office network. I’m at the point where I need to connect this VLAN to the internet, but in a way that there is no risk of
introducing any VLAN traffic, rogue DHCP servers, DNS explosions or any other assorted goodies onto my office’s production network. My workstation hosting this VLAN is a client on my office network which has a Windows 2012 R2 server also running DHCP, DNS
and AD, so there’s plenty to go wrong if don’t do this properly. I’ve set my VLAN on a different subnet, 192.168.10.# vs the office’s 192.168.20.#. I’m not sure if this is sufficient, or if there’s more that I’m missing. 

I know I’m not the first person to do this, but despite all my searching, I can’t seem to find anything that addresses my particular configuration. I’m still new to this, though, so maybe I’m not searching the right terms. Also, if someone knows a good tutorial
to point me toward, that would be great too.


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Evend ID 19050 when exporting VMs via scheduled Powershell script

I have several servers that export their running VMs using Mike Galvin’s script here:

In short this script checks for running VMs, exports the running VMs to a particular location, logs it, and can email if desired.

All but one of our servers runs this script fine. On the server in question I can log personally, open powershell in admin mode and successfully run this script with zero errors. However sometime in the last year the automated way we run this script stopped
working… sort of.

On this server there are 7 VMs running. When the script is kicked off via Scheduled Tasks, 6 of the 7 VMs take the following error:
Event ID 19050 ‘ServerX’ failed to perform the operation. The virtual machine is not in a valid state to perform the operation. (Virtual machine ID 7B70D5A0-F71C-45BA-8506-AB5A983594AF)

We have a dedicated account that runs these scripts. Again all other servers running this script have zero errors. I changed the account running this script to my own since I can successfully run it manually. Still pulls that error.

I’ve done a little searching on it and most of the data I find doesn’t help. Does anyone have any ideas?

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Hyper-V Live Migration:CredSSP


Hi folks,

While configuring settings for Live Migrations in H-V there are 2 authentication options, one of them is CredSSP. There is pretty solid info about Kerberos, but I wonder why and when would you go for

Any example. I understand that no further config is needed in this case. There is very little info about this bird.

Thanks for your insights!

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