Cannot Ping Hyper V guest OS NLB IP from public

Posted on 2009-02-10
Last Modified: 2012-05-06
Hi Guys...
I'm having some problem with NLB on Server 2008 guest OS in Hyper V.
I have setup 2 Hyper V box, each of them will host Exchange 2007 CAS/Hub Transport.
I managed to bring up my NLB for both guest OS, its able to ping, browse web pages from internal IP/name. but when i triy to access from public internet, it failed. telnet, ping, web access all failed.
I have tested with Single NIC unicast and multicast, followed few suggesstion from few different forums but no help... below is the few links that we refer..

Any of you guys encounter before....?
Question by:hell_angel
    LVL 4

    Expert Comment

    Double check this: on the host OS (that the Hyper-V is sitting on), go to Network and Sharing Center, then Manage Network Connections, check the properties for the physical nic that you are using for the Hyper-V's virtual network. It should only have "Microsoft Virtual Network Switch Protocol" checked. This could be causing the behaviour you are seeing. That nic port functions like a switch port, not a standard nic port (and cannot work when Client for Microsoft Networks, ip 4, ip6, etc are enabled). Also, check that the virtual network connection (same place: N&SC/manage connections) associated with that phyical nic has no options checked. Only within your virtual machines should Client for Microsoft, ip4, etc be enabled. Hope this helps!

    Author Comment

    Hi darkjedi213, thanks for your respone, but it is default that the v switch protocol is enabled on Hyper V nic adapter.... :|

    Expert Comment

    You will need to statically add the NLB virtual MAC address to the Hyper-V host or run in multicast mode with a single nic.

    Accepted Solution

    Hi GUys.... Manage to solve the issue by add in static arp at router....

    Write Comment

    Please enter a first name

    Please enter a last name

    We will never share this with anyone.

    Featured Post

    Free Trending Threat Insights Every Day

    Enhance your security with threat intelligence from the web. Get trending threat insights on hackers, exploits, and suspicious IP addresses delivered to your inbox with our free Cyber Daily.

    For most people, the WrapPanel seems like a magic when they switch from WinForms to WPF. Most of us will think that the code that is used to write a control like that would be difficult. However, most of the work is done by the WPF engine, and the W…
    A theme is a collection of property settings that allow you to define the look of pages and controls, and then apply the look consistently across pages in an application. Themes can be made up of a set of elements: skins, style sheets, images, and o…
    In this video, we discuss why the need for additional vertical screen space has become more important in recent years, namely, due to the transition in the marketplace of 4x3 computer screens to 16x9 and 16x10 screens (so-called widescreen format). …
    With the advent of Windows 10, Microsoft is pushing a Get Windows 10 icon into the notification area (system tray) of qualifying computers. There are many reasons for wanting to remove this icon. This two-part Experts Exchange video Micro Tutorial s…

    761 members asked questions and received personalized solutions in the past 7 days.

    Join the community of 500,000 technology professionals and ask your questions.

    Join & Ask a Question

    Need Help in Real-Time?

    Connect with top rated Experts

    7 Experts available now in Live!

    Get 1:1 Help Now