Windows 8.1 Hyper-V : IP address conflict on Guest OS

Hi ,
I have just installed Windows 8.1 and I want to move away from VMWare Player and use Hyper-V instead.
I have nevertheless issues with it on the networking side.
Before setting up my VM, I have:
- converted my vmdk to a vhd.
- created a virtual switch in Hyper-V Manager.
After that, i created the VM using the vhd and the virtual switch created beforehand.
Once I boot up the guest OS (Windows 7), I have no internet connectivity on the guest OS, and it says : windows has detected an IP address conflict
Also when I run ipconfig in a command prompt on the guest, I can see an ip address which is the same as my host OS (192.168.1.5) but then I guess that my host system takes the IP back as if i run ipconfig again the IP address is gone.
So I guess that my host and guest OS fight for the same IP. Also the message "windows has detected an IP address conflict" appears on the Guest OS.
Also at times, the guest OS receive a strange IP: 169.254.99.175 which I have no clue where it comes from.
Does anyone has an idea on how to solve the issue?
Also here is a screenshot of the configuration of the Virtual Switch :
Thanks for any help,
Francois

Hi Dan,
I guess that you use IP address reservation on your router (configuring your router so that DHCP always gives the same IP address for a particular MAC address).
As both your virtual machines and host machine will appear on the network as having the same MAC address, they will both get assigned the same IP by the router.
The solution is to turn off IP Address reservation. Another option is to assign a fixed IP instead of using DHCP.
I now here have 3 VMs on my Windows 8 machine, some use fixed IP and some use DHCP and they all work fine. The important part is to make sure your router does not have settings to assign a particular IP for a particular MAC address.
Good luck!
Francois
Thanks. Reservation is not configured in the router - I have the option of specifying a MAC address and assigning an IP, but the table is blank. I'm guessing it mayb defaults to it? It's a router from the local ISP.
In the advanced option of the virtual adapter in Hyper VM, I selected a static MAC. For whatever reason, the VM now has it's own IP address, X.X.X.7. Host is X.X.X.3
2 strange things though.
1. I can only access the router config page (X.X.X.1) via the VM. On the host, each time I try to login, it kicks me out. It's a Cox branded Netgear router (from ISP). Once I shutdown the VM, I can access the router config page on the host.
2. When looking at the list of connected clients in the router, it only shows the Machine name for the host - however, the corresponding IP address shown is that of the VM.
Weird ...
Anyway, not so concerned with having it work at home - it will be more so for at work.

Similar Messages

IP address conflict on Windows 7 clients after change 3560 to 3650

Hi,
after a switch change 3560 to 3650 some Windows 7 clients show a popup with the message "IP address conflict". Because of using manual DHCP (MAC reserve an IP address) i would exclude the possibilitiy of using an duplicate IP address. After search i found this document:
http://www.cisco.com/c/en/us/support/docs/ios-nx-os-software/8021x/116529-problemsolution-product-00.html
I tried the command
ip device tracking probe delay 10
on the 3650 sw. Till now there are no messages with duplicate IP addresses on clients which connected to 3650 sw.
But on on 3560 sw th command does not exist. Anybody who has a similar problem or an idea to solve the problem on the 3560 sw.
The command "sh ip device tracking all" on 3560 shows that ip device tracking is disabled.
Thx for any help.

IOS version 12.2.(46) SE
the suggested command does not exist.
btw the ip address conflict popup appears on clients which are connect to the 3560 too.
any other ideas?

Window has detected and IPS Address Conflict

     To Whom this my concern, I keep getting this message, which, I had mention in the subject line. I have reset my wifi box and the box, that Charter gave me quit a few times. But, this message keeps on coming up, for some odd reason or another.
     I was just wondering. I had a Hp Lap Top 2000, that some one had stoolen off me, quit a few months, ago. I reported it to the police station and HP and they said that they could not do anything about it. Because, I absolutely lost my serial number, that I had written down.
    But, I used the same email addresses and Passwords on both computes. So, I was just a wondering if the person could be useing the lap top, that I had gotten stoolen from me and this is the way, this is why this message keeps popping up on my computer.
    Oh, I even called up Charter and mention it to them and they absolutely could not figure out what is going on either. So, I just thought, that I would text it on the internet. To see if any one absolutely knew what was going on.
Well, if you want to get in touch with me. My email address it [Personal Information Removed] or
[Personal Information Removed].
If you could help me out. I would appreciate it and awful lots.
                                                                                                                                                    Yours Sincerely,
                                                                                                                                                     Mr. Rockie A. Bates

Hi @Rockiebates1949 ,
Thank you for visiting the HP Support Forums and Welcome. I have looked into your issue about your Window has detected and IPS Address Conflict on your Home Network. This error message indicates that another computer on the network is using the same IP address that your computer is using. Each computer on a network must have a unique IP address. To fix this problem, run the Network troubleshooter.
I hope this helps.
Thanks.
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the bottom to say “Thanks” for helping!

When sync my iphone I get "Windows has detected as IP address conflict"

Computer (win7 64bt) is fine. Same with iphone 5s, IOS 8. But when I plug in iphone to sync with PC I recieved the message :"Windows has detected as IP address conflict."
(This does not happen with my ipad - phone only) When I close the window and everything seems to be working fine...but it pops up regularly. Any thoughts?
Thanks-
MR

These forums are dedicated to Residential products and services offered by Verizon.
For help on Verizon Wireless issues, please post your topic on the Verizon Wireless community.
Thank you.

IP address conflict - pls help...

Hi
I get on my iMac (and also on the MacBook) sometimes the message: *Another device on the network is using your computer's IP address (10.0.0.8).* After a view seconds (and evidently a change of the IP address) Ethernet connectivity works again. When does this happen: e.g. after waking up the Laptop from sleep modus.
Here is my setup:
. ADSL router with 10.0.0.138 GW address
. all devices directly connected via a Gigabit switch
. most devices are set to DHCP except one
. one device needs to have a manual set IP address (set now to 10.0.0.180), because it does not support DHCP (is a special HW for the solar system)
. devices connected via Ethernet cable include:
          - iMac DHCP
          - Windows PC DHCP
          - Apple Time Capsule DHCP
          - PS3 DHCP
          - TV Samsung LED DHCP
          - SAT Receiver Sky+ DHCP
          - NAS DHCP
           - Fronius Data Logger static IP 10.0.0.180
. devices connected via WLAN (to Apple Time Capsule) all using DHCP
          - Apple TV
          - Wii
          - iPhone 4
          - 2 iPads
          - Samsung mobile phone
          - MacBook
All have DCHP activated.
I dont understand how a device can get the same IP address from the DHCP and so causing an IP address conflict. Unless, there are 2 active, which I did not yet figure out...
What did I change lately (before this change, I did not have this problem)?
. I had another router behind the ADSL router, set to 192.168.0.x internal address range for the home network. It got broke so I took it out of the setup as the new ADSL router anyway has a firewall. Since then I have these issues.
What does "got broke" mean - as I am not sure whether this helps in finding the root cause: what happened is that after our vacation when I switched on all clients again I could surf the Internet lets say for 1hour or so and then suddenly all clients lost connection and had an 169.254.0.x IP address. And this although DCHP IP address lifetime of the router was set to 24h and the actual lifetime of the clients IP addresses where in that range (as I reseted the router). Before our vacation all was fine. BTW, the ADSL router works fine (I use also IPTV service over it and it works perfectly all the time).
So before that change, I had a private network segment with 192.168.0.x extending from the router to all wireline devices. I am not sure, but it can be that the Time Capsule, i.e. the wireless network, was on 10.0.0.x (I dont know). Then things would be clear to me, as then evidently the Time Capsule runs a separte DHCP from which the wireless devices fetch their IP address and if they are now all in the same network segment (both wireless and wireline)...then "Houston we have a problem":)
So my questions are:
. is the Airport setting of the Time Capsule wrong? I used "create a wireless network". Is it now just extending the 10.0.0.x network to the wireless domain? Hence do the wireless clients fetch their IP addresses from the ADSL router or the Time Capsule?
. Is the wireless and wireline network fully transparent, can wireless devices connect without problems to a wireline device (e.g. the MacBook to the NAS)?
. Is there an app that helps to identify the clients? I can get from my router a list of IP addresses used by clients, but I cannot link them to the devices.
BR
a

https://discussions.apple.com/message/15887700#15887700
I am having a similar issue as described in another post. search "Time Capsule IP address Conflict".   This is a relatively large home network with a number of media devices, PCs and Macs on a network behind and ATT uverse 2wir router.
Everything worked fine until I added the Time Capsule to the network. Initially the TC got an IP address frou the 2wire router and all was fine.   But the next day I recieved and IP addres conflict from a Mac Book.
TC is Bridge mode - Wireless turned off - attached diretly to a lan port on the 2wire router.
It looked like the TC recieved an IP address from the 2wire router but the 2wire indicated that it was a static IP, rather than one being issued by DHCP. The 2wire handed out the same address to the Mac Book.
I shut down the TC and the Mac Book, rebooted the TC and Mac Book. Everything seemd to be fine. This time the TC got an address from the 2wire DHCP pool 192.168.1.113.   This gave me the opportunity to reserve the address hoping that the TC would get this address every time, and keep it from being handed out to another device.
Everything seemed fine for a day.
Next day we get another address conflict.
The airport utility on an Imac still says that the TC is 192.168.1.113 but the 2wire router does not show the .113 address. Instead it says that the TC has a static IP of .117 .
The Mac Book shows an address of .117.
Shut down the TC
Shut Down the Mac Book
Reboot the Mac Book and Manually assign .120
Change the Macbook to get DHCP address.   It now Gets .120    I reserve .120 for the mac Book
Reboot the TC
It gets .113 and shows up on the 2wire router as .113 issued from DHCP.
Reserver .113 for the TC again.
Waiting to see what happens.
Does the TC go to sleep?
If so does it lose its IP assignment and get a new one when it wakes up?
While it's asleep does DHCP try to give its address to another device?
I would be tempted to blame the DHCP service in the 2wire router accept everything works fine when the TC is not on the network.

IP Address Conflict Using Mobile Hotspot On Iphone 5

Hello,
I just got my new Iphone 5 and I love it, apart from one little problem. Now when I connect it to my laptop using the mobile hotspot (either via usb or wireless) I am constantly getting a network error popup stating that there is an ip address conflict.
Hardware info:
Iphone 5 16gb
Asus G74S Laptop with Windows 7 64bit
Error info:
The error popup is in the form of a small window titled Network Error. It states "Windows has detected an IP address conflict" "Another computer on this network has the same IP address as this computer... blah blah blah"
The windows system event viewer has the following log:
Source is Tcpip
The system detected an address conflict for IP address :: with the system having network hardware address 00-00-00-00-00-00. Network operations on this system may be disrupted as a result.
The event ID is 4199
Done so far:
Already did every single troubleshooting step in regards to ip address conflicts, ipconfig /release and /renew, flush dns etc. I even did an entire system restore on my laptop back to factory settings. Installed a fresh Itunes 10.7 64bit and reconnected my new Iphone 5 and am still getting this message. I never had this problem with my Iphone 4.
Called Apple tech support, they ran me through all the steps relating to the phone itself, reseting network settings, resetting factory settings, removing and re-inserting the sim card, you name it.
Disabled IPv6 in the registry and reboot, still the same popup occurs.
Tried to assign a static IP address to Ipv4, still the same popup
Any ideas?

Still having the same issue....Is there another thread in which this is resolved? Iphone 5, IOS 6. It's just the phone tethered to a laptop (have tried with two laptops, both get the ip address conflict error, so the problem resides in the phone). No other devices are on the network. Was this ever addressed?
We use the iphone 5 as a mobile hotspot for our business, which is completely internet/skype based, and we need to be mobile. Mifi keeps kicking off the connection, so they are not an option. Thank you.

IP Address Conflict with range expander

Hi,
I have a Linksys WRT610N router that I am trying to extend the range of using a Hawking HWREN1. The router configures fine and I'm able to access the Internet from an attached PC. When I hook up the Hawking extender, it configures correctly, it seems, but as soon as it saves the configuration, Windows XP on the PC tells me that there is an IP address conflict.
Hawking suggested a factory reset of the extender and redoing setup, which I did, with no success. As soon as I unplug power to the extender, the error goes away, so the issue is connected to the extender.
I've also tried using a completely different IP address range, setting the router to 192.168.2.2. The PC is set to 192.168.2.201, and the extender to 192.168.2.202, and still I get the IP address error message.
I'm unsure how to perform further diagnostics on this, since at least from the looks of things, there is no IP address conflict, even tho the error message says that there is. Is there something else that could cause an IP address conflict besides the IP address itself, for example? BTW, the extender was purchased on advice of a store clerk, who said that they'd had good luck with the Hawkings. Is there a more appropriate product to use from Linksys. Supposedly, the Hawking is better because it covers a larger variety of standards, even tho it is not dual band like the router. I haven't seen any dual band extenders around.
Any help would be appreciated.
Thanks.
Ron
Solved!
Go to Solution.

If you are getting these error mesasge on your Computer, these means your Both the computers are getting the same IP address from the Router. To avoide getting these error message, you can assigne a Static IP to your Hardwired Computer.
On your XP computer follow the settings bellow. Click on the Start button >>> Settings >>> Control Panel >>>Network Connections- Right click on the icon for Local area connection and go to properties- On the 'General' tab select 'Internet Protocol TCP/IP' and click on the Properties button- Select 'Use the following IP address'- Provide IP Address - 192.168.1.5, Subnet Mask - 255.255.255.0, Default Gateway - 192.168.1.1- Preferred DNS 192.168.1.1, Alternate DNS - 4.2.2.2 >>Click on Ok button to Save and Click on "Close" on main Properties window.
Now check if you are Online from your computer, and i think these should solve your Problem.

WRT54G IP Address conflict...

After 3 sessions with Linksys live chat I have done everything suggested and nothing has worked. Here is the situation:
the router(WRT54G v.3 firmware 4.21.1) is working. I can connect to the internet through the router with my notebook(Windows XP Home SP2) using both wired and wireless connection. IP Addresses are:
wireless -- 192.168.1.101
wired -- 192.168.1.102
I can connect to the internet through the router with a second desktop (Windows XP Home SP2) using wired connection. IP Address is:
wired -- 192.168.1.103
I can NOT connect to the internet through the router using my primary desktop(Windows Vista Home Premium SP1). What I have discovered by checking the windows event log, is this:
The system detected an address conflict for IP address 75:65:84:74 with the system having network hardware address 00-13-10-94-A3-17. Network operations on this system may be disrupted as a result.
Here is the result of ipconfig /all: (with router OUT of the system)
Windows IP Configuration
Host Name . . . . . . . . . . . . : AlBateman-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . :Hybrid
IP Routing Enabled. . . . . . . . :No
WINS Proxy Enabled. . . . . . . . :No
DNS Suffix Search List. . . . . . :hsd1.la.comcast.net.
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . : hsd1.la.comcast.net.
Description . . . . . . . . . . .: NVIDIA nForce Networking Controller
Physical Address. . . . . . . . . : 00-1E-90-69-12-D5 - this is now the correct address
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::b8fd:96ff:164e:395a%16
IPv4 Address. . . . . . . . . . . : 75.65.78.130 -- I assume this is being assigned by comcast
Subnet Mask . . . . . . . . . . . : 255.255.252.0
Lease Obtained. . . . . . . . . . : Sunday, September 14, 2008 4:18:35 PM
Lease Expires . . . . . . . . . . : Thursday, September 18, 2008 4:18:35 PM
Default Gateway . . . . . . . . . : 75.65.76.1
DHCP Server . . . . . . . . . . . : 68.87.68.16
DNS Servers . . . . . . . . . . . : 68.87.68.162
68.87.74.162
68.87.64.196
NetBIOS over Tcpip. . . . . . . . : Enabled
Tunnel adapter Local Area Connection* 6:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 02-00-54-55-4E-01
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Local Area Connection* 9:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : hsd1.la.comcast.net.
Description . . . . . . . . . . . : Microsoft ISATAP Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Local Area Connection* 15:
Connection-specific DNS Suffix . : hsd1.la.comcast.net.
Description . . . . . . . . . . .: Microsoft 6to4 Adapter
Physical Address. . . . . . . . .: 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . .: No
Autoconfiguration Enabled . . . .: Yes
IPv6 Address. . . . . . . . . . .: 2002:4b41:4e82::4b41:4e82(Preferred)
Default Gateway . . . . . . . . .: 2002:c058:6301::c058:6301
DNS Servers . . . . . . . . . . .: 68.87.68.162
68.87.74.162
68.87.64.196
NetBIOS over Tcpip. . . . . . . .: Disabled
The router is currently reset to factory settings:
Internet setup
Internet Connection Type Automatic Configuration-DHCP
Optional Settings (required by some ISPs)
Router Name: WRT54G
Host Name:
Domain Name:
MTU:
Auto Size: 1500
Network Setup
Router IP
Local IP Address: 192.168.1.1
Subnet Mask: 255.255.255.0
Network Address
Server Settings (DHCP)
DHCP Server: Enable
Starting IP Address: 192.168.1.100
Maximum Number of DHCP Users: 50
Client Lease Time: 0 minutes (0 means one day)
Static DNS 1: 0.0.0.0
Static DNS 2: 0.0.0.0
Static DNS 3: 0.0.0.0
WINS: 0.0.0.0
Time Setting Time Zone: (GMT-08:00) Pacific Time (USA & Canada)
MAC Clone Enabled
User Defined Entry: 00-1E-90-69-12-D5
Router Information
Firmware Version: v4.21.1, Nov. 6, 2006
Current Time: Not Available
MAC Address: 00-1E-90-69-12-D5
Router Name: WRT54G
Host Name:
Domain Name:
Internet
Configuration Type
Login Type: Automatic Configuration - DHCP
IP Address: 0.0.0.0
Subnet Mask: 0.0.0.0
Default Gateway: 0.0.0.0
DNS 1:
DNS 2:
DNS 3:
MTU: 1500
The ONLY change made to the default settings was to click on MAC Clone.
WITH THE ROUTER CONNECTED:
Status: Router:
Firmware Version: v4.21.1, Nov. 6, 2006
Current Time: Sun, 14 Sep 2008 16:41:33
MAC Address: 00-1E-90-69-12-D5
Router Name: WRT54G
Host Name:
Domain Name: hsd1.la.comcast.net.
Internet
Configuration Type
Login Type: Automatic Configuration - DHCP
IP Address: 75.65.78.130
Subnet Mask: 255.255.252.0
Default Gateway: 75.65.76.1
DNS 1: 68.87.68.162
DNS 2: 68.87.74.162
DNS 3: 68.87.64.196
MTU: 1500
Status: Local Network:
MAC Address: 00:13:10:94:A3:17
IP Address: 192.168.1.1
Subnet Mask: 255.255.255.0
DHCP Server: Enabled
Start IP Address: 192.168.1.100
End IP Address: 192.168.1.149
netstat -rn
=================================================================
Interface List
16 ...00 1e 90 69 12 d5 ...... NVIDIA nForce Networking Controller
1 ........................... Software Loopback Interface 1
8 ...02 00 54 55 4e 01 ...... Teredo Tunneling Pseudo-Interface
18 ...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter
19 ...00 00 00 00 00 00 00 e0 6TO4 Adapter
=================================================================
IPv4 Route Table
=================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 75.65.76.1 75.65.78.130 20
75.65.76.0 255.255.252.0 On-link 75.65.78.130 276
75.65.78.130 255.255.255.255 On-link 75.65.78.130 276
75.65.79.255 255.255.255.255 On-link 75.65.78.130 276
127.0.0.0 255.0.0.0 On-link 127.0.0.1 306
127.0.0.1 255.255.255.255 On-link 127.0.0.1 306
127.255.255.255 255.255.255.255 On-link 127.0.0.1 306
224.0.0.0 240.0.0.0 On-link 127.0.0.1 306
224.0.0.0 240.0.0.0 On-link 75.65.78.130 276
255.255.255.255 255.255.255.255 On-link 127.0.0.1 306
255.255.255.255 255.255.255.255 On-link 75.65.78.130 276
=================================================================
Persistent Routes:
None
IPv6 Route Table
=================================================================
Active Routes:
If Metric Network Destination Gateway
19 1125 ::/0 2002:c058:6301::c058:6301
1 306 ::1/128 On-link
19 1025 2002::/16 On-link
19 281 2002:4b41:4e82::4b41:4e82/128
On-link
16 276 fe80::/64 On-link
16 276 fe80::b8fd:96ff:164e:395a/128
On-link
1 306 ff00::/8 On-link
16 276 ff00::/8 On-link
=================================================================
Persistent Routes:
None
> In addition, please post the "ipconfig /all" output of the
> computer which does not work correctly in the full setup,
> i.e.computer wired to the router, router wired to the modem,
> router has a working internet connection. Add the output of
> "netstat -rn".
The router does NOT have a working internet connection when connected to that particular pc.
SO... how do I fix this conflict with IP Addresses? All of the resetting & powering off & on & etc.... hasn't changed anything.
Message Edited by BatBytes on 09-15-2008 11:09 AM

Here are ipconfig /all & netstat -rn with complete hookup:
ipconfig /all
Windows IP Configuration
Host Name . . . . . . . . . . . . : AlBateman-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : NVIDIA nForce Networking Controller
Physical Address. . . . . . . . . : 00-1E-90-69-12-D5
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::b8fd:96ff:164e:395a%16(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.1.100(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
NetBIOS over Tcpip. . . . . . . . : Enabled
Tunnel adapter Local Area Connection* 6:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 02-00-54-55-4E-01
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Local Area Connection* 15:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : 6TO4 Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Local Area Connection* 16:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
netstat -rn
===========================================================================
Interface List
16 ...00 1e 90 69 12 d5 ...... NVIDIA nForce Networking Controller
1 ........................... Software Loopback Interface 1
8 ...02 00 54 55 4e 01 ...... Teredo Tunneling Pseudo-Interface
19 ...00 00 00 00 00 00 00 e0 6TO4 Adapter
24 ...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #2
===========================================================================
IPv4 Route Table
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
127.0.0.0 255.0.0.0 On-link 127.0.0.1 306
127.0.0.1 255.255.255.255 On-link 127.0.0.1 306
127.255.255.255 255.255.255.255 On-link 127.0.0.1 306
192.168.1.0 255.255.255.0 On-link 192.168.1.100 276
192.168.1.100 255.255.255.255 On-link 192.168.1.100 276
192.168.1.255 255.255.255.255 On-link 192.168.1.100 276
224.0.0.0 240.0.0.0 On-link 127.0.0.1 306
224.0.0.0 240.0.0.0 On-link 192.168.1.100 276
255.255.255.255 255.255.255.255 On-link 127.0.0.1 306
255.255.255.255 255.255.255.255 On-link 192.168.1.100 276
===========================================================================
Persistent Routes:
None
IPv6 Route Table
===========================================================================
Active Routes:
If Metric Network Destination Gateway
1 306 ::1/128 On-link
16 276 fe80::/64 On-link
16 276 fe80::b8fd:96ff:164e:395a/128
On-link
1 306 ff00::/8 On-link
16 276 ff00::/8 On-link
===========================================================================
Persistent Routes:
None

IP address conflict help and setting up security code for access

Hi folks, I am about as non-technical as one can get. So I apologize in advance and thank you guys for your patience as everything you tell me will have to be spelled out for me.
Ques 1: I have one desk top computer with internet access through my cable TV provider. On it I have the Linksys WRT54G wireless router. We use two laptops.
Lately I've been getting an error message on my desktop saying there is an IP Address that is in conflict. My son often gets booted off line (on laptop) and so I'm guessing maybe it is his laptop that is in conflict. Please help me resolve this issue.
Quest 2: I would like to set up a security code for our wireless access so that other people will not be able to intrude upon our signal. Can someone walk me through this as well?
Thank you so much!
-Jen in NJ

The most common reason to get two identical IP addresses, is if you are using fixed LAN IP addresses incorrectly on your system.
Do you already use any fixed LAN IP addresses? If so, please state what fixed LAN IP addresses you are using, and also state your DHCP server range.
Rules for using fixed LAN IP addresses on Linksys routers:
With Linksys routers, a fixed (static) LAN IP addresses must be assigned in the device that is using the address. So you need to enter the fixed address in the computer or printer, not in the router.
When using a Linksys router, any fixed LAN IP address must be outside the DHCP server range (typically 192.168.1.100 thru 192.168.1.149), and it cannot end in 0, 1, or 255.
Therefore any fixed LAN IP address would normally need to be in the range of
192.168.1.2 thru 192.168.1.99 or
192.168.1.150 thru 192.168.1.254
assuming you are still using the default DHCP server range.
Also, in the computer, when you set up a static LAN IP address, you would need to set the "Subnet mask" to 255.255.255.0 and the "Default Gateway" to 192.168.1.1 and "DNS server" to 192.168.1.1
It is also important that no two devices on your network be set to the same static LAN IP address.
Check all of your static LAN IP addresses. If you have violated any of the above rules for static LAN IP addresses, it could be the cause for your problem, and you should fix it before attempting any other router repairs or changes.
********* Wireless Security **********
Brfore proceeding with wireless security, you must get your IP address conflict problem solved. Please do the above first.
To set up wireless security, you must use a computer that is wired to the router.
Where to find the router settings: The router's login password is usually on one of the "Administration" pages. The other settings are all found in the "Wireless" or the "Security" section of the router's setup pages, located at 192.168.1.1
First, give your router a unique SSID. Don't use "linksys".
Make sure "SSID Broadcast" is set to "enabled".
Next, leave the router at its default wireless settings (except for the unique SSID), and then use your pc to connect wirelessly to the router. Test your wireless Internet connection and make sure it is working correctly. You must have a properly working wireless connection before setting up wireless security.
To implement wireless security, you need to do one step at a time, then verify that you can still connect your wireless computer to the router.
Next, encrypt your wireless system using the highest level of encryption that all of your wireless devices will support. Common encryption methods are:
WEP - poor (see note below)
WPA (sometimes called PSK, or WPA with TKIP) - good
WPA2 (sometimes called PSK2, or WPA with AES) - best
WPA and WPA2 sometimes come in versions of "personal" and "enterprise". Most home users should use "personal". Also, if you have a choice between AES and TKIP, and your wireless equipment is capable of both, choose AES. With any encryption method, you will need to supply a key (sometimes called a "password" ).
The wireless devices (computers, printers, etc.) that you have will need to be set up with the SSID, encryption method, and key that matches what you entered in the router.
Retest your system and verify that your wireless Internet connection is still working correctly.
And don't forget to give your router a new login password.
Picking Passwords (keys): You should never use a dictionary word as a password. If you use a dictionary word as a password, even WPA2 can be cracked in a few minutes. When you pick your login password and encryption key (or password or passphrase) you should use a random combination of capital letters, small letters, and numbers, but no spaces. A login password, should be 12 characters or more. WPA and WPA2 passwords should be at least 24 characters. Note: Your key, password, or passphrase must not have any spaces in it.
Most home users should have their routers set so that "remote management" of the router is disabled. If you must have this option enabled, then your login password must be increased to a minumum of 24 random characters.
One additional issue is that Windows XP requires a patch to run WPA2. The patch is located in SP3, so you will need SP3 to run WPA2 in Win XP. Vista already supports WPA2.
Note:
WEP is no longer recommended. The FBI has demonstrated that WEP can be cracked in just a few minutes using software tools that are readily available over the Internet. Even a long random character password will not protect you with WEP. You should be using WPA or preferably WPA2 encryption.

I/O addresses conflict with KT4AV

Hi,
My system: KT4AV, Athlon 2800+, 512 MB, Radeon 9200, Windows 2000 pro.
When I install normally Windows 2000 pro the computer type in device manager is Uniprocessor ACPI. BUT I also get a Hardware I/O addresses conflict on motherboard resources: conflicts with DMA, Keyboard, System timer, ...(Address range 0800-087F).
I would like to keep ACPI HAL but I would ALSO like to get rid of these conflicts!
Any help appreciated.
Regs

Don't know too much about Windows 2000, I'm afraid. Checked Windows, but I guess you have been there. But maybe you find what you are looking for. Hope so!
To sort of amuse you a little ironically I withsend a quote:
http://search.microsoft.com/search/results.aspx?View=en-us&p=1&s=0&c=4&st=b&qu=i%2fo+conflict+2000&na=30
"User Action:
Contact your system administrator. Check the configuration of the adapter card by selecting Network in Control Panel. Make sure the adapter card is configured according to the manufacturer's specifications and that the card's configuration does not conflict with the configurations of other hardware. "

IP address conflict - Personal Router ValetPlus M20

We are having a regular IP address conflict with our Cisco ValetPlus M20 router that causes one portable computer to not be able to access the internet and we reboot the router - I am looking for a permanent solution to this problem - not the temporary solution of renewing the IP address as is recommended on most message boards that I've found online - why would the router/network have such a problem? Does something need to be set? Does the router need to be configured? It seems that the router should be able to allocate IP addresses for all computers on the network - which include two portable computers, one desktop, and 2 ipads. But only one portable computer running windows 7 experiences the conflict, has the problem. Could it be software on that computer or malware causing the problem?
Thanks,
David

dfine1971 wrote:
I'm not sure what you're asking, we have internet access, but one computer loses its connection overnight and then we reboot the router and that solves the problem...
Hello, dfine1971. One computer losing connection may be due to any of the following causes: wireless interference, intermittent wireless signal, or limits on the number of devices that are allowed to connect to the wireless network (router). If the computer is wired to the router, there's a possibility of an adapter problem. For wireless interference and intermittent signals, try changing the router wireless channel to either 1, 6, 9, or 11. Relocating the router should provide you a better signal coverage. If the IP address conflict error message still persists, set the wireless clients to automatic DHCP configuration or enable DHCP Reservation instead of using static IP.
More power to the users!

Windows Server 2012 - Hyper-V - iSCSI SAN - All Hyper-V Guests stops responding and extensive disk read/write

We have a problem with one of our deployments of Windows Server 2012 Hyper-V with a 2 node cluster connected to a iSCSI SAN.
Our setup:
Hosts - Both run Windows Server 2012 Standard and are clustered.
HP ProLiant G7, 24 GB RAM, 2 teamed NIC dedicated to Virtual Machines and Management, 2 teamed NIC dedicated to iSCSI storage. - This is the primary host and normaly all VMs run on this host.
HP ProLiant G5, 20 GB RAM, 1 NIC dedicated to Virtual Machines and Management, 2 teamed NIC dedicated to iSCSI storage. - This is the secondary host that and is intended to be used in case of failure of the primary host.
We have no antivirus on the hosts and the scheduled ShadowCopy (previous version of files) is switched of.
iSCSI SAN:
QNAP NAS TS-869 Pro, 8 INTEL SSDSA2CW160G3 160 GB i a RAID 5 with a Host Spare. 2 Teamed NIC.
Switch:
DLINK DGS-1210-16 - Both the network cards of the Hosts that are dedicated to the Storage and the Storage itself are connected to the same switch and nothing else is connected to this switch.
Virtual Machines:
3 Windows Server 2012 Standard - 1 DC, 1 FileServer, 1 Application Server.
1 Windows Server 2008 Standard Exchange Server.
All VMs are using dynamic disks (as recommended by Microsoft).
Updates
We have applied the most resent updates to the Hosts, WMs and iSCSI SAN about 3 weeks ago with no change in our problem and we continually update the setup.
Normal operation
Normally this setup works just fine and we see no real difference in speed in startup, file copy and processing speed in LoB applications of this setup compared to a single host with 2 10000 RPM Disks. Normal network speed is 10-200 Mbit, but occasionally
we see speeds up to 400 Mbit/s of combined read/write for instance during file repair
Our Problem
Our problem is that for some reason all of the VMs stops responding or responds very slowly and you can for instance not send CTRL-ALT-DEL to a VM in the Hyper-V console, or for instance start task manager when already logged in.
Symptoms (i.e. this happens, or does not happen, at the same time)
I we look at resource monitor on the host then we see that there is often an extensive read from a VHDX of one of the VMs (40-60 Mbyte/s) and a combined write speed to many files in \HarddiskVolume5\System Volume Information\{<someguid and no file extension>}.
See iamge below.
The combined network speed to the iSCSI SAN is about 500-600 Mbit/s.
When this happens it is usually during and after a VSS ShadowCopy backup, but has also happens during hours where no backup should be running (i.e. during daytime when the backup has finished hours ago according to the log files). There is however
not that extensive writes to the backup file that is created on an external hard drive and this does not seem to happen during all backups (we have manually checked a few times, but it is hard to say since this error does not seem leave any traces in event
viewer).
We cannot find any indication that the VMs themself detect any problem and we see no increase of errors (for example storage related errors) in the eventlog inside the VMs.
The QNAP uses about 50% processing Power on all cores.
We see no dropped packets on the switch.
(I have split the image to save horizontal space).
Unable to recreate the problem / find definitive trigger
We have not succeeded in recreating the problem manually by, for instance, running chkdsk or defrag in VM and Hosts, copy and remove large files to VMs, running CPU and Disk intensive operations inside a VM (for instance scan and repair a database file).
Questions
Why does all VMs stop responding and why is there such intensive Read/Writes to the iSCSI SAN?
Could it be anything in our setup that cannot handle all the read/write requests? For instance the iSCSI SAN, the hosts, etc?
What can we do about this? Should we use MultiPath IO instead of NIC teaming to the SAN, limit bandwith to the SAN, etc?

Hi,
> All VMs are using dynamic disks (as recommended by Microsoft).
If this is a testing environment, it’s okay, but if this a production environment, it’s not recommended. Fixed VHDs are recommended for production instead of dynamically expanding or differencing VHDs.
Hyper-V: Dynamic virtual hard disks are not recommended for virtual machines that run server workloads in a production environment
http://technet.microsoft.com/en-us/library/ee941151(v=WS.10).aspx
> This is the primary host and normaly all VMs run on this host.
According to your posting, we know that you have Cluster Shared Volumes in the Hyper-V cluster, but why not distribute your VMs into two Hyper-V hosts.
Use Cluster Shared Volumes in a Windows Server 2012 Failover Cluster
http://technet.microsoft.com/en-us/library/jj612868.aspx
> 2 teamed NIC dedicated to iSCSI storage.
Use Microsoft MultiPath IO (MPIO) to manage multiple paths to iSCSI storage. Microsoft does not support teaming on network adapters that are used to connect to iSCSI-based storage devices. (At least it’s not supported until Windows Server 2008 R2. Although
Windows Server 2012 has built-in network teaming feature, I don’t article which declare that Windows Server 2012 network teaming support iSCSI connection)
Understanding Requirements for Failover Clusters
http://technet.microsoft.com/en-us/library/cc771404.aspx
> I have seen using MPIO suggests using different subnets, is this a requirement for using MPIO
> or is this just a way to make sure that you do not run out of IP adressess?
What I found is: if it is possible, isolate the iSCSI and data networks that reside on the same switch infrastructure through the use of VLANs and separate subnets. Redundant network paths from the server to the storage system via MPIO will maximize availability
and performance. Of course you can set these two NICs in separate subnets, but I don’t think it is necessary.
> Why should it be better to not have dedicated wireing for iSCSI and Management?
It is recommended that the iSCSI SAN network be separated (logically or physically) from the data network workloads. This ‘best practice’ network configuration optimizes performance and reliability.
Check that and modify cluster configuration, monitor it and give us feedback for further troubleshooting.
For more information please refer to following MS articles:
Volume Shadow Copy Service
http://technet.microsoft.com/en-us/library/ee923636(WS.10).aspx
Support for Multipath I/O (MPIO)
http://technet.microsoft.com/en-us/library/cc770294.aspx
Deployments and Tests in an iSCSI SAN
http://technet.microsoft.com/en-US/library/bb649502(v=SQL.90).aspx
Hope this helps!
TechNet Subscriber Support
If you are
TechNet Subscription user and have any feedback on our support quality, please send your feedback
here.
Lawrence
TechNet Community Support

Windows Server 2012 Hyper-V network latencies

Hi All,
I have an issue with our Windows Server 2012 Hyper-V hosts that I can't seem to figure out. Situation:
2 x Dell PowerEdge R815 servers with AMD opteron 6376 16 core CPU's and 128 GB RAM running Windows Server 2012 with Hyper-V.
2 virtual machines running on the same physical host and connected to the same virtual switch show high TCP connection latencies. One virtual machines runs a SQL Server 2012 database instance and a Dynamics AX 2012 R2 instance. The other machine a
SharePoint 2013 instance and the AX client. We see latencies of 20ms and higher on most of the TCP connections that are made from the sharepoint machine to the sql server machine.
At first I thought it might have something to do with the physical NIC's. It turned out that VMQ wasn't correctly supported by the firmware of the Broadcom BCM5709c cards. By default this setting is enabled. Turning off the VMQ setting somewhat improved
the situation but the latencies are still at 8ms and higher.
What I don't understand is what influence enabling/disabling VMQ should have on network performance. As I understand it now virtual machines connected to the same virtual switch bypass the physical altogether. Another point is that VMQ should actually improve
performance, not decrease it.
Another question I have is about the various tcp offloading settings on the physical NIC's. After installing the new firmware and drivers from Dell most of these settings are set to disabled. The documents I have been able to find talk about Windows Server
2008, any thought how these settings relate to Windows Server 2012 and whether they should be enabled?
Thanks in advance for your time and thoughts
Kind regards,
Dennes Schuitema

Hi Denes,
Please try to update your BroadCom NIC driver version ,the newest version should be 7.8.51
For details please refer to following link :
http://www.broadcom.com/support/ethernet_nic/netxtremeii.php
Best Regards
Elton Ji
If it is not the answer , you can unmark it to continue .
We
are trying to better understand customer views on social support experience, so your participation in this
interview project would be greatly appreciated if you have time.
Thanks for helping make community forums a great place.

Windows 2008 r2 guests blue screen on Windows 2012 R2 Hyper-V Cluster with e5 2670-v2 processors

Hello all,
We have a new hyper-v infrastructure deployed in two brand new Dell R720 Servers with 384GB of Memory and dual Intel e5 2670-v2 processors. This infrastructure is replacing an existing hyper-v 2008 R2 and all the guests are being migrated to this new cluster.
The issue we are seeing is our 2008 r2 guests blue screening ocasionally with 0x0000001a,0x0000004e or 0x00000050 bugchecks.
All this guests are configured with dynamic memory and with the integration components up to date. These same guests were running with no problems in the hyper-v 2008r2 cluster.
When searching i found this article from vmware that pretty much describes what we are facing:
http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2073791
Are you aware of the same problem with this kindd of hardware on windows 2012 r2 hyper-v?
Thanks!
Nuno Carvalho

Meanwhile i found this May 2014 update on the intel specification of the CPU we are using:
CA135 Incorrect Page Translation when EPT is enabled
Problem:
If EPT (Extended Page Tables) is enabled, then a complex sequence of internal processor events may result in unexpected page faults or use of incorrect page translations.
Implication:
Due to this erratum a guest may crash or experience unpredictable system behavior.
Workaround:
It is possible for the BIOS to contain a workaround for this erratum.
Status:
For the affected steppings, see the
Summary Tables of Changes.
This affects VMware as of the today update of the article i referenced in the first post, what about hyper-v?
http://www.intel.com/content/dam/www/public/us/en/documents/specification-updates/xeon-e5-v2-spec-update.pdf
Nuno Carvalho

Windows 8.1 Hyper-V virtualization rights

So in Windows 7 Pro we had XP mode. It was a full copy of XP which was licensed under the Windows 7 Pro license. Do I have the licensing rights to install Windows 7 Pro on my Windows 8/8.1 machine using Hyper-V?
Quite often my company uses XP mode to run 16 bit applications, or apps that just seem to work better on a 32 bit system, but I really don't want to have to keep getting Windows 7 machines when 8/8.1 works fine except for these old apps which I need an older/32
bit system.

Hi,
The Windows 8 x86 can run the 16-bit application， please refer to the following link.
http://social.technet.microsoft.com/forums/windows/en-US/d03a56cb-0039-42b7-962d-a389caab99f9/installing-windows-8-32bit
I don’t think you have the license right of the Windows 7 Pro in Windows 8 Hyper-v, if you don’t buy it.
Please refer to the license agreement as follow.
http://download.microsoft.com/Documents/UseTerms/Windows_8_English_ca383862-45cf-467e-97d3-386e0e0260a6.pdf
Additionally, if you install the Windows 7 in Hyper-v, you will not be able to use XP mode, because XP mode is a vitual mode and the Hyper-v is a virtual machine.
You can't use vitual mode in a virtual machine. Please refer to the following link.
http://social.technet.microsoft.com/forums/windows/en-US/78578f0d-4891-4bbf-8bbb-6b9eb05bc031/want-to-run-xp-mode-on-windows-7-vm-on-hyper-v
If there are any problems, please let me know.
Best regards

Windows 8.1 Hyper-V : IP address conflict on Guest OS

Similar Messages

Maybe you are looking for