Windows Server Hyper-V guests cannot see each other on network

Posted by Noldorin on Server Fault See other posts from Server Fault or by Noldorin
Published on 2011-11-30T00:01:02Z Indexed on 2011/11/30 1:54 UTC
Read the original article Hit count: 466

Filed under:

hyper-v

|

windows-server

I have a Hyper-V physical machine along with two standard laptops running within my LAN (connected by an ASUS-RT56U router). The physical server runs Windows Hyper-V Server 2008 R2, with two Windows Server 2008 R2 (full) guest VMs installed and running within.

Both laptops run Windows 7. All OSs are 64-bit.

Opening up Network in Windows Explorer on either of the two laptops displays both of the laptops in the LAN fine. However, neither of the guest VMs on the server (nor the host itself) are displayed. Indeed, the guest VMs can not see each other in Network view either. I can ping all computers (laptops and servers) without problems from within the LAN, but all of the servers are simply not visible from anywhere.

In addition, the Network Map screen (accessible via Network and Sharing centre) gives me an error message:

"An error happened during the mapping process."

And I'm suspecting this might have something to do with how LLTP (Link Layer Topology Protocol) is working on the network. Worth noting though is that before my server was on the network, the Network Map screen displayed fine (as far as I can remember).

© Server Fault or respective owner

Windows Server Hyper-V guests cannot see each other on network

Posted by Noldorin on Super User See other posts from Super User or by Noldorin
Published on 2011-11-30T00:28:23Z Indexed on 2011/11/30 1:56 UTC
Read the original article Hit count: 466

Filed under:

hyper-v

|

windows-server

I have a Hyper-V physical machine along with two standard laptops running within my LAN (connected by an ASUS-RT56U router). The physical server runs Windows Hyper-V Server 2008 R2, with two Windows Server 2008 R2 (full) guest VMs installed and running within.

Both laptops run Windows 7. All OSs are 64-bit.

Opening up Network in Windows Explorer on either of the two laptops displays both of the laptops in the LAN fine. However, neither of the guest VMs on the server (nor the host itself) are displayed. Indeed, the guest VMs can not see each other in Network view either. I can ping all computers (laptops and servers) without problems from within the LAN, but all of the servers are simply not visible from anywhere.

In addition, the Network Map screen (accessible via Network and Sharing centre) gives me an error message:

"An error happened during the mapping process."

And I'm suspecting this might have something to do with how LLTP (Link Layer Topology Protocol) is working on the network. Worth noting though is that before my server was on the network, the Network Map screen displayed fine (as far as I can remember).

© Super User or respective owner

Related posts about hyper-v

HyperV on Domain Controller or DC on HyperV?

as seen on Server Fault - Search for 'Server Fault'
I want to setup a little fileserver/domain controller/sharepoint server. SharePoint shouldn't run on the DC directly, so I want to use HyperV. But I never used it before, so I wonder: Should I install the Domain Controller and HyperV Role and run 1 VM for SharePoint? Or should I run HyperV server… >>> More
Hyper-V and Hyper-threading: On or off?

as seen on Server Fault - Search for 'Server Fault'
Hey all, With the new Xeon CPUs supporting Hyper-threading, what is the current wisdom with regard to using it (or not) on a Hyper-V host machine? I was originally under the impression that turning it on in a virtual host environment could be detrimental as the 'extra' CPUs were not true cores.… >>> More
Migration of VM from Hyper-V to Hyper-V R2 - Pass through disks

as seen on Server Fault - Search for 'Server Fault'
I am trying to migrate a VM which is using two pass through disks from a legacy Hyper-V Cluster to a new R2 cluster. The migrated VM cannot use the pass through disks though. The guest OS (2008 R2) doesn't seem to like the disk and eventually tries to format the disk instead of mounting it. The… >>> More
Comparison of Hyper-V, Hyper-V Server, VMware ESXi, Xen and Parallels Bare Metal (Community Wiki)

as seen on Server Fault - Search for 'Server Fault'
Can we use this question to collect information and the pros and cons of each of the above products? Specifically I am wondering whethere there is any sane reason to use Hyper-V (the role built into Windows Server) over Hyper-V server (the stand-alone product based on the same technology) and what… >>> More
Hyper-V Deployment Options Best Practices

as seen on Server Fault - Search for 'Server Fault'
In what circumstances would you choose each of the following deployment options: Hyper-V installed as the bare bones Windows Hyper-V Server 2008 R2 Hyper-V role installed on a Windows Server 2008 R2 Server Core installation Hyper-V role installed on a Windows Server 2008 R2 Full Installation For… >>> More

Related posts about windows-server

differences in style rendering: windows server 2003 to windows server 2008

as seen on Server Fault - Search for 'Server Fault'
I copied code from our live site (running windows server 2003) to a new QA virtual machine (running windows 2008). When I view the page source info its exactly the same, but the appearance of the sites is very difference. Is this caused by the difference in OS, or am I looking in the wrong place? >>> More
Windows Server 2008 - Windows Server Backup - Email Alerts

as seen on Server Fault - Search for 'Server Fault'
I would like to create a script that emails me when a scheduled daily backup runs. I'd prefer the email to indicate success or failure. I understand that this is not an easy thing to do with Windows Server 2008. Is it possible? If so, how? Thanks >>> More
Can't RDP Into Windows Server After Windows Server Establishes VPN Session

as seen on Server Fault - Search for 'Server Fault'
Hi there. I've setup a Windows 2008 Server in a Cloud Environment. I am able to RDP to this Windows Server ("aka CloudServer") in the Cloud Environment. When I establish PPTP VPN connection from the CloudServer back to our Windows Server ("aka OfficeServer"), my RDP session is dropped and it won't… >>> More
in-place upgrade Windows Server Standard Edition 2003 to Windows Server Enterprise/Datacentre Editio

as seen on Server Fault - Search for 'Server Fault'
I recently asked a question about upgrading from 2003 to 2008, but i realised this is a lot harder to do, the only reason i want to upgrade is to have increase the RAM Windows 2003 Standard Edition R2 only supports 4GB Windows 2003 Enterprise Edition R2 supports up to 32GB Windows 2003 Datacentre… >>> More
Windows Azure: Announcing Support for Windows Server 2012 R2 + Some Nice Price Cuts

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
Today we released some great updates to Windows Azure: Virtual Machines: Support for Windows Server 2012 R2 Cloud Services: Support for Windows Server 2012 R2 and .NET 4.5.1 Windows Azure Pack: Use Windows Azure features on-premises using Windows Server 2012 R2 Price Cuts: Up to 22%… >>> More