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  • (01. January 2010., 10:27:49)












Author Topic: Is there a maximum Hyper-V clients? New Linux setups: no internet or lan! :(  (Read 2722 times)

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devnullius

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I have 4 Hyper-V clients running just fine (1x ubuntu, 2x windows, 1x misc.).

It was time to add another Linux Box.

First I tried FreeBSD 10.1. After setup I noticed it could not get any internet connectivity. Figuring it was a bug, I removed the machine and I installed Oracle Linux 7 Enterprise.

After a loooong setup, I found myself once more with a Linux system that had no internet / LAN access... And I must admit: I'm clueless as where the problem lies. Just in case I removed the virtual switch (lan adapter) and installed a new one. Which didn't resolve anything!

Who can help me? All I want is a decent IRC client :P

Devvie
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devnullius

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More information about bitcoin, altcoin & crypto in general? GO TO  j.gs/7385484/btc

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devnullius

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DHCP.

Define "creating new virtual switch"?

Devvie

:) http://scforum.info/index.php/topic,9559.0.html

I don't get it: all new Linux installs on Hyper-V are unable to find any internet. I don't understand why :(

Oh, and happy Holidays! :)
Did you use Static IP, chack for local VMs connectivity? (Ping, etc...)
Maybe you can use a new Virtual Switch for the new VMs
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jheysen

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When defining Hyper-V's networking properties, you can create multiple Virtual Switchs (so you can have separate VLANs), you can try appending the new machine to a new Virtual Switch and connecting that switch to the server's main connection

devnullius

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Looks like there is a max of 1 Virtual Switch per hardware device (LAN adapter)? Can that be right? :)

Devvie
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devnullius

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FROM: http://technet.microsoft.com/en-us/library/jj680093.aspx

Maximum components for CLIENTS:

Virtual network adapters = 12
- 8 can be the “network adapter” type. This type provides better performance and requires a virtual machine driver that is included in the integration services packages.
- 4 can be the “legacy network adapter” type. This type emulates a specific physical network adapter and supports the Pre-execution Boot Environment (PXE) to perform network-based installation of an operating system.

I'll think about what that means next. I do have 4 virtual machines currently running. 2 Windows though! I'll test by shutting down 1 virtual client, see what that gives :s

Maxima for Server running Hyper-V:

Running virtual machines per server = 1024
- Virtual switches
Varies; no limits imposed by Hyper-V.
The practical limit depends on the available computing resources.
- Virtual network switch ports per server
Varies; no limits imposed by Hyper-V.
The practical limit depends on the available computing resources.

Devvie
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devnullius

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Shutting down the miscellaneous client and making Oracle the 4th active virtual machine, did not solve anything. As it should. I cannot find any limits nor reasons why these new client boxes won't connect. They are even on the Microsoft approved list.

Sigh :(

Devvie
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devnullius

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(client tools were enabled)
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devnullius

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Hyper-V clients unable to get IP address from DHCP Router?
« Reply #8 on: 29. December 2014., 00:03:28 »
Setting static IP suddenly gives internet access.

SO the problem is within DHCP! Why would my client not get a DHCP IP 4 address???

Shouldn't the client broadcast a DHCP request to the network once it gets online, a request broadcasted from the virtual switch? If so, where should the DHCP server assign the address to...? Should that be handled by the client? Because the virtual switch is on the server, connected to physical LAN. Do my questions make sense? :)

Open to any suggestions :)

Devvie
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jheysen

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Maybe it's a matter of bad routing ARP requests? :p
(Or a problem with your router's DHCP)

 

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