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Hyper-V. VM"s can"t get external access

Source: microsoft.public.virtualserver
Sent: 05/01/2009
From: Nondisclosure007 <(email address - cut out)>
Message:

Host OS: Windows 2008 SBS. 2 physical NIC's. NIC 1 is host os only
(hard coded ip). NIC2 is for Hyper-V and the only thing it has
checked in it's property's is "Microsoft Virtual Network Switch
Protocol". Virtual NIC on Host OS has in it; 'connect using -
external access' (hyper-v defined network using NIC2), only thing NOT
checked on that is "Microsoft Virtual Network Switch Protocol" (again,
hard coded ip).

Hyper-V virtual network manager: only 1 network, called "external
access", connection type: external using host physical NIC2.

All VM's settings (xp and vista, all 32 bit): network adapter is set
to external acess.

Note: on physical network, host os is running the DHCP server, it's
the only one on any network.

I've tried hard coding ip's in the vm's and it makes no difference.

in "network connections" on host OS, NIC1 under 'connectivity' has
'access to local and internet', Virtual NIC has 'access to local
only'. NIC2 has nothing in the 'connectivity' column; it's blank.

PS. ipconfig on host shows ip's for both NIC1 and Virtual NIC. I've
used the 'integration services' in all guest vm's. No firewall issues
as firewall is turned off.

Please help.

Thank You in Advance!

PPSS. Hmm, solved the problem. Here's the oddball steps I took:
1. re-set IPv4 on Virtual NIC to DHCP. Blew up networking on box.
2. re-set IPv4 on Virtual NIC to hardcoded orginal. worked.
reason: before I did that, the DHCP server on the host OS was only
bound to NIC1. after I did all the above, the DHCP server on the host
OS was then bound to both NIC1 and Virtual NIC.

So the question now is, how did the DHCP loose it's binding
information. See, this had all been working for about 4 months.

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Related Messages

Re: Hyper-V. VM"s can"t get external access

Sent: 05/01/2009
From: Nondisclosure007 <(email address - cut out)>
Message:

On May 1, 6:53=A0pm, Nondisclosure007 <(email address - cut out)>
wrote:

EDIT: scratch that, doesn't work. I get an IP address from the DHCP
server, but still can't access external network. DHCP server shows it
handed out the IP address.

Show quoted text

> Host OS: Windows 2008 SBS. =A02 physical NIC's. =A0NIC 1 is host os only
> (hard coded ip). =A0NIC2 is for Hyper-V and the only thing it has
> checked in it's property's is "Microsoft Virtual Network Switch
> Protocol". =A0Virtual NIC on Host OS has in it; 'connect using -
> external access' (hyper-v defined network using NIC2), only thing NOT
> checked on that is "Microsoft Virtual Network Switch Protocol" (again,
> hard coded ip).
>
> Hyper-V virtual network manager: only 1 network, called "external
> access", connection type: external using host physical NIC2.
>
> All VM's settings (xp and vista, all 32 bit): network adapter is set
> to external acess.
>
> Note: on physical network, host os is running the DHCP server, it's
> the only one on any network.
>
> I've tried hard coding ip's in the vm's and it makes no difference.
>
> in "network connections" on host OS, NIC1 under 'connectivity' has
> 'access to local and internet', Virtual NIC has 'access to local
> only'. =A0NIC2 has nothing in the 'connectivity' column; it's blank.
>
> PS. =A0ipconfig on host shows ip's for both NIC1 and Virtual NIC. =A0I've
> used the 'integration services' in all guest vm's. =A0No firewall issues
> as firewall is turned off.
>
> Please help.
>
> Thank You in Advance!
>
> PPSS. =A0Hmm, solved the problem. =A0Here's the oddball steps I took:
> 1. =A0re-set IPv4 on Virtual NIC to DHCP. =A0Blew up networking on box.
> 2. =A0re-set IPv4 on Virtual NIC to hardcoded orginal. =A0worked.
> reason: before I did that, the DHCP server on the host OS was only
> bound to NIC1. =A0after I did all the above, the DHCP server on the host
> OS was then bound to both NIC1 and Virtual NIC.
>
> So the question now is, how did the DHCP loose it's binding
> information. =A0See, this had all been working for about 4 months.

Re: Hyper-V. VM"s can"t get external access

Sent: 05/01/2009
From: Nondisclosure007 <(email address - cut out)>
Message:

On May 1, 6:57=A0pm, Nondisclosure007 <(email address - cut out)>
wrote:
y
ve
s
t

EDIT (2): this time it actually does work. both NIC1 and Virtual NIC
under connectivity say 'access to local and Internet'. started VM, it
got IP from DHCP and went out on the internet.

I found I had about 4 different 'external access' listed in device
manager under network and one was disabled (turns out, that was the
one Hyper-V needed). I enabled and viola, it works.

I tried uninstalling the other ones, didn't work and don't care to now.

Show quoted text

> On May 1, 6:53=A0pm, Nondisclosure007 <(email address - cut out)>
> wrote:
>
>
>
>
>
> > Host OS: Windows 2008 SBS. =A02 physical NIC's. =A0NIC 1 is host os onl=
> > (hard coded ip). =A0NIC2 is for Hyper-V and the only thing it has
> > checked in it's property's is "Microsoft Virtual Network Switch
> > Protocol". =A0Virtual NIC on Host OS has in it; 'connect using -
> > external access' (hyper-v defined network using NIC2), only thing NOT
> > checked on that is "Microsoft Virtual Network Switch Protocol" (again,
> > hard coded ip).
>
> > Hyper-V virtual network manager: only 1 network, called "external
> > access", connection type: external using host physical NIC2.
>
> > All VM's settings (xp and vista, all 32 bit): network adapter is set
> > to external acess.
>
> > Note: on physical network, host os is running the DHCP server, it's
> > the only one on any network.
>
> > I've tried hard coding ip's in the vm's and it makes no difference.
>
> > in "network connections" on host OS, NIC1 under 'connectivity' has
> > 'access to local and internet', Virtual NIC has 'access to local
> > only'. =A0NIC2 has nothing in the 'connectivity' column; it's blank.
>
> > PS. =A0ipconfig on host shows ip's for both NIC1 and Virtual NIC. =A0I'=
> > used the 'integration services' in all guest vm's. =A0No firewall issue=
> > as firewall is turned off.
>
> > Please help.
>
> > Thank You in Advance!
>
> > PPSS. =A0Hmm, solved the problem. =A0Here's the oddball steps I took:
> > 1. =A0re-set IPv4 on Virtual NIC to DHCP. =A0Blew up networking on box.
> > 2. =A0re-set IPv4 on Virtual NIC to hardcoded orginal. =A0worked.
> > reason: before I did that, the DHCP server on the host OS was only
> > bound to NIC1. =A0after I did all the above, the DHCP server on the hos=
> > OS was then bound to both NIC1 and Virtual NIC.
>
> > So the question now is, how did the DHCP loose it's binding
> > information. =A0See, this had all been working for about 4 months.
>
> EDIT: =A0scratch that, doesn't work. =A0I get an IP address from the DHCP
> server, but still can't access external network. =A0DHCP server shows it
> handed out the IP address.- Hide quoted text -
>
> - Show quoted text -

Post Reply | This is Spam! | Mark as Spam

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