Enabling Jumbo frames on VMXNET3 adapter in Windows Server 2012

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• vmxnet3 adapter on windows server 2012 with problem of bottleneck for MSSQL Server

  Hello!

  We have a server windows 2012 R2 with MSSQL server 2014.

  The client software uses the jdbc for database connection. If customers make a query which collects a massive amount of data the whole thing slowed down after a while.

  Then, his need to wait 10-20 minutes to speed up again. I have tested and tried everything.

  -measure the ethernet parameters

  -replace the cables by cat7

  -installed a virtual machine with the windows client and the real customer use the virtual environment via rdp

  -activated the RSS in the vmxnet3 advanced settings and windows

  -the mode SplitRx in vcenter vm settings and disabled ethernet Coalescent too

  -set the VM to high latency

  -tried to migrate the virtual machine to another host

  Not for their help. If a massive sql query is run first its great, then the need for a second or more to check a single record.

  checked the vm cpu stress but its less than 5% all the time. Checked the network with wireshark, there are a lot of small packets but nothing big. The bandwidth used is still low.

  When its idle delay after two packets will increase from a few ms to 400-500 ms.

  Our most powerful server is an HP DL380 G9 with two octa core Xeon processor 384 GB of ram, full SSD datastore. Its a lightning fast host.

  The virtual machine have 8 core cpu and 64 GB of ram.

  No matter where am I up the virtual machine or how many resources provide the custom aisle question.

  The strange thing is when customers slowed down I can copy large files between the client and the server with fast speed, so the slow sql.

  I can solved this question if I use the ethernet E1000 instead of the VMXNET3 adapter, but E1000 have much more load and the server need to transfer big files too, not only the sql service.

  Vmxnet3 much faster and have less overhead, but this question of sql, I have a problem with that. So I go back to the E1000 for now. Its slower eat more cpu but the sql connections works very well without any problems.

  Can someone tell me what I can try harder to identify the vmxnet3 problem? I really need it to improve network performance and lower overhead, but the rapid sql is the top priority.

  Thank you!!!

  We had exactly the same problem on our SQL servers once upgraded to Vsphere6.This is due to Receive Segment coalescence feature in new VMXNET3-nics on Win 2012.

  More details here: http://nickmarshall.com.au/blog/2015/7/24/vsphere-6-hardware-version-11

  The best way to solve this problem is to turn it off completely in the server operating system (in the admin command prompt):

  netsh int tcp set global rsc = disabled

  
  

  Check with:

  
  

  netsh int tcp show global

  It's fast and easy without downtime or disruptions and involves no change types of nic.

  After doing this on all our SQL and application servers, everything was ok.

  
  

  
  

• ISCSI enabling jumbo frames

  Hello world

  I want to just make sure I'm on the right track here.

  In theory, I should be able to enable jumbo frames 9000 on my switch and SAN without affecting guests. The scenario would be:

  • Stop all ESXi hosts
  • Reconfigure the SAN and switches to take in charge extended frames
  • Turn on ESXi hosts

  Basically, I want to make sure that the switches and SAN work correctly with change before changing anything on the hosts. Ideally, if all goes well with the hosts stable (vmkping d s 1500 x.x.x.x and turn VMs) I then change the MTU on the VMKernel ports and try again the hosts.

  Its good in theory?

  Sounds good to me, even if it is not necessary to stop the ESXi host. Stop the virtual machines should be sufficient.

  A good post on the frames: http://rickardnobel.se/troubleshoot-jumbo-frames-with-vmkping/

  André

• ProBook 6560 b: wireless network drivers - R2 Windows Server 2012

  Would like to know if one got successfully installed Windows server 2012 R2 drivers. I try to install the drivers wireless for two days now and could not get their work. Any help would be really appreciated.

  Thank you

  Hello:

  I don't work for or represent HP.

  All I can advise is that HP offers no support or drivers for all windows server operating systems for any mobile business or consumer they ever made.

  With this track record, I doubt very much they will be.

  In addition, it would be Intel to release Windows Server drivers for their wireless cards, not HP.

  I've never seen a card driver wireless for windows server on the Intel Web site.

  Normally the equivalent standard windows drivers work on Windows server most of the time.

  For example: If you had installed Windows Server 2008 R2 on your laptop, wireless Intel W7 driver probably would work.

  But since there is no equivalent W10 driver for the wireless card model that your laptop is, I have a feeling that is the reason why the wireless card does not work.

  You may laugh with some of the advanced settings for the card under the Advanced tab in Device Manager to see if you can get the card to work.

  Enable WMM for example.

• Satellite P850 - 31 M - invalid key, the installation of Windows Server 2012

  Hello

  I don't know about or write about me, that it moves if necessary.
  So here's my problem.

  I just bought a laptop with the windows installation 8, but I want to install Windows Server 2012.
  I boot on my dvd, everything's fine, and then I click on install and then he told me that the key was invalid.
  But I do not enter a key.

  When I reinstall windows 8 I give no key and it did not in the property and after he told me that windows is activated.

  I don't understand the key or it will scan?
  I have how little he turns to me key?

  Thanks in advance

  Sorry, but I m confused.

  If you have purchased the license Windows Server 2012, then you have also a serial key.
  You must use this key for activation.

  Victory 8 regarding:
  I guess Win 8 was preinstalled.
  In this case, you will need to create a recovery disk before you install another system?
  You don't have any disk Win 8 because there was a possibility to create a recovery disk and the recovery disk contains a 8 win which is enabled.

• Windows Server 2012 Standard Activation failure

  Hi MS supports,

  We have two Windows Server 2012 Standard which must be activated with the information of the right at the bottom of the windows desktop as shown in Figure 1.

  Then, I run the command slui and enter the product key to activate as shown in figure 2.

  Unfortunately, I got an error with already shown as Picture 3.

  Note,

  • I called the Activation Center as indicated in picture 4 in Norway to attempt activation by phone, but the CSR told me that they cannot generate the confirmation ID to activate the operating system.
  • The server is not connected and cannot be connected to the internet for internal use only.

  Can I have your help to solve the problem? and I also need to know the impact if it is not enabled.

  Thank you.

  Figure 1:

  

  Photo 2:

  

  Photo 3:

  

  Photo 4:

  

  Hello

  Post your question in the TechNet Server Forums, as your question kindly is beyond the scope of these Forums.

  http://social.technet.Microsoft.com/forums/WindowsServer/en-us/home?category=WindowsServer

  TechNet forums:

  https://social.technet.Microsoft.com/forums/en-us/home

  MSDN forums:

  https://social.msdn.Microsoft.com/forums/en-us/home

  See you soon.

• Thumbnail option does not work in Terminal Server in Windows Server 2012 and server session

  This might be a stupid question.

  We have two Windows server 2012 R2 - TS and DC. The clients are connecting to TS and access the shared network drives present in DC. I always unchecked 'show icons, never thumbnails' and 'Show thumbnails in System Properties' enabled on DC and the two TS.

  No always thumbnail option.

  You will need to click on each image. Users have many files containing multiple images. It's annoying to click and view each image.

  Note: NO GPO is configured to block it. Checked.

  I can't find any object GPO to allow this option to be :)

  More info. For customers, anywhere, whether network shares or all folders in TS session. It does not work. Also tried painting and Windows Photo Viewer.

  Here, any help will be very appreciated!

  Hello

  Post your question in the TechNet Server Forums, as your question kindly is beyond the scope of these Forums.

  http://social.technet.Microsoft.com/forums/WindowsServer/en-us/home?category=WindowsServer

  See you soon.

• Remote access Windows Server 2012 through internet with desktop connection

  Summer messing about with it for days and don't get no love.

  Try to connect with Windows 7 Ultimate edition to Windows Server 2012 Data Center version from outside my home network, Starbucks or McDonald's or my server at home.

  Tried all these steps found in this promising and useful article:

  http://Windows.Microsoft.com/en-us/Windows7/allow-remote-desktop-connections-from-outside-your-home-network

  1. Allow connections to the computer you want to access remotely. DONE - ADDED to THE SERVER AND NON-ADMIN ACCOUNT to RDP GROUP of ROLES, using network level authentication. Connection of Win 7, so this method of authentication should not be a problem, I assume.

  2. Make sure that remote desktop is able to communicate through your firewall. DONE - FOR BOTH PUBLIC AND PRIVATE RULE.

  3. Find the IP address of the computer on your home network you want to connect. MADE - by using the ipconfig/all command

  4. Open your router configuration screen and worms forward port 3389 for TCP IP address of the destination computer. DONE - NOT TCP/UDP but TCP only, internal and external port goes. Note: The use of a booster signal wifi at the end of the House, it is a problem that requires additional configuration? I don't think he has an ip address or acts as a router. But in desperation I can try unplugging then again head the local Starbucks to try to connect.

  5. Find the IP address of the router so that the remote desktop can be found on the Internet. DONE - using "what is my ip", pretty easy.

  6. Open Remote Desktop connection, and connect. ACTUALLY, I think THAT, IN ENTERING [ip router]: 3389.

  But the result of the message is always the typical:

  (1) remote access to the server is not enabled.

  > But this is not true, that I am capable of the DRC at home on the server machine.

  (2) computer remote is not off.

  > But this is not true, as I just left home 30 minutes and sometimes it's rarely, only restarted.

  (3) the remote computer is not available on the network.

  > Don't know what that means. Of course the remote computer is not on the network, I am on right now. It's on my home network. But I can ping my router ip via cmd, then coming to the outside can be done; through my router, I should be able to access inside my home network port forwarding w. But no love.

  So... what to do, what to do...

  The wifi booster is a problem?

  Connects to the Data Center edition a problem?

  What happens if I uncheck the option ' use authentication NLA, is that the passage of the security risk?

  Any ideas about the configuration I could be missing before giving up and go for VPN or TeamViewer. I would really like to see materialized during all the time that I put in trying to run the DRC.

  Thanks for any input.

  / Markus

  Hello

  Post your question in the TechNet Server Forums, as your question kindly is beyond the scope of these Forums.

  http://social.technet.Microsoft.com/forums/WindowsServer/en-us/home?category=WindowsServer

  See you soon.

• Windows Server 2012 lost connectivity

  Hi all

  I created 6 virtual servers Windows Server 2012 R2 Standard. However, there are 2 weeks 3 to 6 servers randomly lost connectivity (ping returned request) outdated, unable to control remotely,... several times until I have restart servers, connectivity was back. Even if 3 other servers do not have this problem.

  I found the following error events in the event viewer, I don't know if they cause this problem or not:

  Log name: System
  Source: Schannel
  Event ID: 36888
  A fatal alert is generated and sent to the remote endpoint. This can lead to the termination of the connection. The defined protocol TLS fatal error code is 40. The Windows SChannel error state is 252.

  Reference: https://msdn.microsoft.com/en-us/library/windows/desktop/ms678421(v=vs.85).aspx

  -------------

  Log name: System

  Source: NETLOGON

  Event ID: 5719

  This computer was not able to set up a session securely with a domain controller in the domain GHPFE because of the following:

  Currently, there are no available connection server to process the logon request.

  This can lead to authentication issues. Make sure that this computer is connected to the network. If the problem persists, contact your domain administrator.

  MORE INFO

  If this computer is a domain controller for the specified domain, it puts up the session for the specified domain PDC emulator. Otherwise, this computer sets up the session secure at any domain controller for the specified domain.

  Reference: https://support.microsoft.com/en-us/kb/938449

  Microsoft warning serious problems can occur if you modify the registry incorrectly by using the registry editor or by using another method. These problems may require that you reinstall the operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.

  -------------

  Log name: Application

  Source: CAPI2

  Event ID: 4107

  Has not taken from the root list third-party auto update cab at: http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab> with error: these data are incorrect.

  Reference: https://support.microsoft.com/en-us/kb/2328240

  -------------

  Log name: System

  Source: Client DNS events

  Event ID: 8015

  The system cannot save the host (A or AAAA) resource records (RR) for the network adapter

  Reference: http://support.simpledns.com/kb/a182/system-failed-to-register-host-resource-records-rrs-network-adapter___-warning-windows-event-log.aspx

  -------------

  Log name: System

  Source: Group policy

  Event ID: 1054

  The processing of Group Policy failed. Windows could not obtain the name of a domain controller. This could be caused by a name resolution failure. Check your service provider Internet (DNS, Domain Name System) is configured and working properly.

  Reference: https://support.microsoft.com/en-us/kb/324174

  Microsoft Cause: This problem may occur if the address of a preferred DNS server configured on the client is invalid or is inaccessible.

  -------------

  Is there anyone know of this problem and the resolution to it? Help, please.

  Thank you

  Khiet Manh

  This issue is beyond the scope of this site and must be placed on Technet or MSDN
  http://social.technet.Microsoft.com/forums/en-us/home

  http://social.msdn.Microsoft.com/forums/en-us/home

• Image acquisition turns off in Windows Server 2012

  I am running Windows Server 2012.  Kind of a necessity, that I also hosts the website of our company.  All updates are installed, and desktop experience is enabled.  Image acquisition Windows is listed in Services, but was originally set to manual by default.  I tried just to start the service, but it stops automatically after about 30 seconds.  I tried the automatic configuration, but it does not start on its own.  I get no error message, and I checked dependencies, which seem fine departure, because repeatedly referenced in many other assignments.  Fresh ideas?

  Hello

  Post your question in the TechNet Server Forums, as your question kindly is beyond the scope of these Forums.

  http://social.technet.Microsoft.com/forums/WindowsServer/en-us/home?category=WindowsServer

  See you soon.

• BB 5.00 on Windows Server 2012

  I just set up a Server Windows Server 2012 and installed BB 5.00 to it.

  The installation went well and I was initially able to get the web page to display the main screen. When I click on one of the monitored items, he would meet a http404 error.

  I contacted support and they had me add all things IIS 6 management and check that I had the CGI/ISAPI restrictions and restart IIS and the BBServer. It corrected this problem.

  The second question I encounterd and didn't have to do it in 4.40 was I have edited and created a password for the file editcode, with a special character in it, and when I tried to change the configuration via the web page, it kept throwing an error.

  Well the fix for this was to add the NOTAMP to the seciong of the bbdef.cfg file RunOpt.

  Another discovery in v5.00 is that you must have if you plan to allow enable/disable ability has that you must edit and save the enadiscode with a password in it.

  Thank you

  Brian

  Additional items, that I learned today...

  If you are using Windows Server 2008 and higher (windows server 2012 in my case), you must explicitly create a rule in Windows Firewall incoming and outgoing for the TCP port 25 and port TCP 1984.

• Level broker for connections to windows server 2012

  Dear,

  I would like to know if there is any risk that the upgrade of the OS of the server holding the broker for connections, web access and management of the profile of windows server 2008 R2 to windows server 2012 or more to enable support of HTML5 connector? Please tell us what is the scenario for these updates.

  Concerning

  Hi Habibgha,

  Hoping to upgrade the OS on-site? It should work, but I don't know if it has been tested. Assuming that your infrastructure servers are virtualized, perhaps you could take a snapshot or clone this virtual machine and try in a lab environment?

  Or you can work on a step-by-step approach, the first stage being, if your current farm is 8.0.1 you can upgrade all roles on your current server on 2008 R2 for vWorkspace 8.5, then build a new VM with 2012 R2 and install IIS and access to the Web of vWorkpace role. Create a new vWorkspace site web access on the new server just for the connector of HTML5.

  I hope that helps!

  Thanks, Sam

• Windows Server 2012 HyperVisor_Error bugcheck 0 x 00020001 PE R910

  In case someone else runs into this problem.  I recently met a bugcheck HyperVisor_Error 0 x 00020001 on a server PowerEdge R910 after installation of Windows Server 2012 DataCenter Edition, enabling the Hyper-V role and implementation of VMs.  The server would always restart.  I contacted Dell support and ran the full range of update all the firmware / bios / drivers, ran a material 3 days test without result.  I finally opened a support ticket with Microsoft.  They had a similar case that was solved by certain changes in bios Setup.  They gave me a list of the changes and I reduced to a configuration option.

  The culprit in my case was the parameter memory BIOS - enable the nodes.  After disabling this setting, the server seems to be stable.

  Just wanted to post in case anyone else has this problem and save some time/effort.  Try to adjust this and see if it solves your problem.

  -Mike

  Disable the parameter memory BIOS - uds

• WAAS for RADIUS and Windows Server 2012 NPS server configuration

  I have trouble getting our WAAS to authenticate devices and connection via RADIUS.  Running NPS on Windows Server 2012.  Confirmed that my device WAAS can ping the IP address of the RADIUS server.  Using the attribute Type of administrative service under network policies.  Look in the event viewer, I get an error with event ID 15, "a malformed RADIUS message has been received of the xxxx-WAAS-01 customer. The data is the RADIUS message. »

  Right now, I can connect with only the local default user and password name.  Here are a few config for WAAS, running version 6.2.1:

  RADIUS server key *.
  Server RADIUS auth-host 10.194.10.13 port 1645
  !
  connection of local authentication enable secondary
  enable login authentication RADIUS primary
  local authentication configuration enable secondary
  Service radius Authentication configuration Select primary
  failover of authentication server unavailable

  I confirmed that my shared key is entered correctly on the WAAS and the NPS.  I have the switches/routers Cisco works well on the same RADIUS server.

  Someone had a bit of luck plug their WAAS to RADIUS devices using Windows Server 2012 and NPS?  If so, please share additional measures you have taken to get things to work.

  Hi Paul,.

  Based on the RADIUS error you probably experience failure CSCva14731. This was discovered with Cisco ACS, but can affect other RADIUS servers.

  To confirm, you can check the corresponding error in syslog WAAS:

  authenticate: % WAAS-UNKNOWN-3-899999: pam_radius_auth: talk_radius: RADIUS server did not respond (timeout 5 (sec))

  Also, this defect would not affect peripheral on software 5.x WAAS.

  The problem will be solved in 6.2.3 to come free.

• TMS on Windows Server 2012?

  TMS 14.3 installation Guide and upgrade says to install on Windows 2008 SP2 TMS or 2008 R2.

  Is it possible to install MSD on Windows Server 2012?

  Did anyone done this yet?

  Sent by Cisco Support technique iPad App

  Martin and Paulo are correct... not are currently unsupported and highly recommend even not try.

  However, stay tuned... or coming soon, but probably not in the time frame you need. Go with Win 2008 R2 in the meantime