On windows 2008 hyperV Server NETWORK load balancing

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• Windows Server 2008 R2 Network Load Balance question

  Hello

  I got my hooked VMs when a network load balancing in Windows Server 2008 R2 clustering.

  This only happens for Windows Server 2008 R2, Windows Server 2008 with SP2 is OK.

  And I use VMware ESXi 4, I don't know if this has been addressed in ESXi 4 U1.

  Can someone give some advice?

  Thank you very much

  I would try the update 1 - it correctly supports Windows 2008 R2 x 64, where like esxi4 don't...

• Windows 2008 network load balancing

  I hope someone can help.

  I'm looking to start to test the Windows 2008 network load balancing. This will serve a webfarm. I went through various whitepapers, and forum messages but who have a few more questions:

  1. I get VMWare recommends multicast. Windows 2008 gives you two options, multicast and IGMP multicast. Seeing that I'm not an expert in network management, I'm a little nervous about the switched. Apparently to enable IGMP Snooping on your Cisco switches eliminate this? Is this true, if so you need install your cluster as IGMP Mulicast?

  2 do you need to have dedicated NICs for the NLB cluster, separate vSwitch etc.? If this is not the case, there will be interference with the existing production network?

  3 is a necessary static arp entry on your switch? All switches or just the farm goes where the ESX hosts are connected to?

  Some info would be appreciated.

  1 have not tested, but IGMP snooping is what caused problems before because the switch ports would not join the group correctly, so it is suitable to test whether the OS is ready to send packets.

  2. it is better to use separate vNIC to the virtual IP address of the NLB cluster

  3 static arp would be necessary if the IGMP snooping does not work for the switch ports that will be the virtual machine hosts that are part of the NLB cluster.

  -KjB

• Windows 2003 R2 SP2 Enterprise 64-bit NETWORK load balancing

  Hi guys,.

  I try to get two virtual machines on the same host to the NETWORK load balancing. Each of them has 2 vNIC. I create the NLB cluster on the first node, but for the life of me when I try to add the second host in the cluster, the private network card which is supposed to be the NLB nic is not listed, but the public's. It's my setup.

  Cluster configuration:

  Cluster name: ews.contoso.local

  The cluster IP address: 192.168.0.56/24

  Host name: EX2K7 - 01.contoso.local

  Name of the NETWORK card: private

  IP address: 192.168.0.57/24

  Front door: no

  Name of the NETWORK card: Public

  IP address: 192.168.0.58/24

  Gateway: 192.168.0.1

  Host name: EX2K7 - 02.contoso.local

  Name of the NETWORK card: private

  IP address: 192.168.0.59/24

  Front door: no

  Name of the NETWORK card: Public

  IP address: 192.168.0.60/24

  Gateway: 192.168.0.1

  I am trying to create a test environment for Exchange 2007, as described here (http://www.msexchange.org/articles_tutorials/exchange-server-2007/high-availability-recovery/load-balancing-exchange-2007-client-access-servers-windows-network-technology-part2.html). For now, I'm going to rebuild my servers instead of using the deployment of the model in the VC and NewSID. Any help is very appreciated. Hope this fixes it but just in case, any input is more than welcome. Thank you.

  Just as an info... it's what I've done up to now (http://forums.msexchange.org/m_1800499325/mpage_1/key_/tm.htm#1800499367). Thank you.

  I managed to build configs W2K3 NLB before leaving a model using a customization specification (i.e. sysprep) before. We have different bits sysprep on our VC server and have a specification of personalization set for a W2K3 64-bit server. So my sequence was

  1. Deploy the new virtual machine for the model, using specifications of customization for W2K3 64 bit

  2. Let VM boot and full customization technical room (i.e. the sysprep let run)

  3. Power off the virtual machine, add 2nd NIC (our default model has only 1 NETWORK card; do not try to add another card NETWORK during the deployment step because it has a bug which prevents work properly)

  4. Power on VM, join to the domain

  5. Repeat steps 1 to 4 for 2nd VM

  6. Install and configure NLB in multicast mode

• Hi ALL, did any attempt on the virtual computer NETWORK load balancing using HYPERV on UCS blades

  I try to configure the CASE server cluster by using the Unicast NLB on the virtual machine on different blades on the UCS, it works for awhile, then he abandoned packages.

  I heard that this screenplay of unicast is not supported in the UCS when she used END-host mode in the fabric interconnet...? any attempted before.

  Would it, I use the multicast mode is that something needs to be done on the FBI62020 or the LAN switch upstream. ??

  Header note I found on the implementation of UCS for mulitcast NLBL:

  Microsoft NLB can be deployed in 3 modes:

  Unicast

  Multicast

  IGMP multicast

  For series B UCS deployments, we have seen that the multicast and IGMP multicast work.

  IGMP multicast mode seems to be the more reliable deployment mode.

  To do this, the monitoring settings:

  All NLB Microsoft value "Multicast IGMP" nodes.  Important!  Check ths by logging into EACH node independently.  Do not rely on the MMC of NLB snap.

  An IGMP applicant must be present on the VLAN of NLB.  If PIM is enabled on the VIRTUAL LAN that is your interrogator.  UCS cannot function as applicant IGMP.  If an interrogator of functioning is not present, NLB IGMP mode will not work.

  You must have a static ARP entry on cheating it upstream pointing IP address Unicast NLB on the multicast MAC address NETWORK load balancing.  This need will set up, of course, on the VLAN of the NLB VIP. The key is that the routing for the NLB VLAN interface must use this ARP entry as a unicast IP ARP response may not contain a multicast mac address. (Violation of the RFC 1812)  Hosts on the NLB VLAN must also use the static entry.  You may have several entries ARP.  IOS can use a function of 'alias' of ARP. (Google it.)

  How Microsoft NLB works. -The truncated for brevity Mac addresses.

  TOPOLOGY OF NLB MS

  NETWORK VLAN 10 = subnet 10.1.1.0/24 IP load balancing

  VIP = 10.1.1.10 NETWORK LOAD BALANCING

  Arp entry static switch advanced IP 10.1.1.10 upstream to MAC 01

  NLB VIP (MAC 01, IP 10.1.1.10)

  NODE-A (AA, MAC IP:10.1.1.88)

  NŒUD-B (MAC BB, IP:10.1.1.99)

  Using the IGMP snooping and interrogator VLAN snooping table is filled with the mac NLB address and groups pointing to the appropriate L2 ports.

  MS NLB nodes will send the responses of IGMP queries.

  This snooping table could take 30 to 60 seconds to complete.

  Host on VLAN 200 (10.200.1.35) sends traffic to NETWORK VIP (10.1.1.10) load balancing

  It goes of course to VLAN 10 interface that uses the static ARP entry to resolve to address MAC 01 VIP NETWORK load balancing.

  Since it is a multicast frame destination it will be forward by the IGMP snooping table.

  The framework will arrive at ALL NLB nodes. (NŒUD-A & NŒUD-B)

  NLB nodes will use its load balancing algorithm to determine which node will manage the TCP session.

  Only one NLB node will respond to this host with TCP ACK to start the session.

  NOTES

  This works in a VMware with N1k, standard vSwtich and vDS environment. Where surveillance IGMP is not enabled, the framing for VIP MAC NETWORK load balancing will be flooded.

  NLB can only work with TCP-based services.

  As stated previously mapping an IP unicast to a multicast mac address is a violation implied by RFC 1812.

  TROUBLESHOOTING

  Make sure your interrogator is working. Just to clarify that this does not mean that it is actually at work.

  Wireshark lets check that IGMP queries are received by the NLB nodes.

  Make sure that the ARP response works as expected.  Once Wireshark again is your friend.

  Look at the paintings IGMP snooping. Validate the L2 ports appearing as expected.

  CSCtx27555 [Bug-preview for CSCtx27555] Unknown multicast with destination outside the range MAC 01:xx: are deleted. (6200 FI fixed in 2.0.2m)

  IGMP mode not affected.

  CSCtx27555    Unknown multicast with destination outside the range MAC 01:xx: are deleted.

  http://Tools.Cisco.com/support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCtx27555

  fixed in 2.0(2m)

  Solution: Change the NLB mode of operation of "Multicast" to "multicast IGMP', which modifies balancing load NETWORK VIP MAC at 0100.5exx.xxx Beach, allows to transfer occur as expected.

  Q: and if I switch to switch mode, which means all of the profile and the settings on the servers are completely exhausted and I need to recreate them. ???

  A:Cisco Unified Computing System Ethernet switching Modes

  http://www.Cisco.com/en/us/solutions/collateral/ns340/ns517/ns224/ns944/whitepaper_c11-701962.html

  -There is no impact on the configuration, you have done service profiles.  they will continue to work as expected.  Mode selector has the FI behave more like a conventional switch.  Most notable is that Spanning tree will be activated and if you have several uplinks yew, tree covering weight will begin to block redundant paths.

  You need to review your topology and what impact tree covering weight.  Generally, we at the switch port upstream defined as "edge master", you want to delete this line.

  For pre-production and laboratory environment, PDI can help qualified with the planning, design and implementation partners.  Given to review the IDP site and open a case if you need more detailed assistance.

• My computer is connected to the Windows 2008 R2 server and some of the users on this computer receive their network drive mapped on group policy and some do not.

  My computer is connected to the Windows 2008 R2 server and some of the users on this computer receive their network drive mapped on group policy and some do not.  I find nothing in Event Viewer that shows that there is a problem.  Please let me know what to do to get the disks appears

  Original title: Network Networking file sharing file sharing file sharing file sharing discovery sharing Fileshare share shared

  Hi,

  The question you posted would be better suited in the TechNet Forums. I would recommend posting your query in the TechNet Forums.

  TechNet Forum

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

   

  Hope this information helps.

• NETWORK load balancing issues

  Hi all

  It is a strange and I can't really find anything when searching. I just wanted to know if other people have seen this? and if there is a work around?

  OK, the virtual environment that I administer is quiet large and the love windows NLB developers where I prefer f5 or hardware NLB. So it is quiet assign windows NETWORK load balancing clusters in the virtual environment, the issue I encountered is if the critical path for an application passes a cluster nlb to another (so they talk to each other). If a node of each of these clusters is on the same physical host NLB rocking.

  Why?

  well windows NLB when a request is sent to the VIP address all nodes in the cluster must meet before it is executed by one of the nodes, tests that I've found is that if a node of each group is on the same host demand seams to stay internal to the ESX host, as it goes, I know where that IP address is and goes to a single node until that node is waiting for the other nodes of the cluster in order to recognize the request but they never get it the whole thing stopped and happens to expire and the performed by the team of network packet capture won't let even the host he sews.

  OK, a few rules affinity could solve this but I'm talking about 8 knots, talking to a node 4 cluster which then in turn talk to another cluster of 4 knots and im talking about another 50 like that until the point where DRS. can not move whatever it is as well that the rules are a nightmare administrave especially since only 2 machines can be in a rule.

  All hosts running ESX 4 Update 1 and running on HP blades, unfortunately we run on unicast mode, due to the size of the environment networks don't want to or can't add all switches/routers arp entries. It is configured as recommended by using unicast.

  I can reproduce this problem every time still in test. would it be because of the unicast? I don't see how.

  I would add also that it should not be 2 nlb cluster, if a server client attempts to hit the VIP of a windows NETWORK load balancing cluster and it is on the same host as one of the nodes it will expire as a single node gets applications. F5 NLB works perfectly, and when they are on hosts separate windows THAT NLB works very well also.

  Just came across this because the jobs would come about the application does not, by trying to hit the vip on the correct port for the requesting server, it wouldn't connect and the support guys would vmotion a knot and it would usually fix the issue, and if it does not pass all the nodes on the same esx host and it would work every time (I know (, but until the full time vmware resources came on board as me not doubtful we had the time to really watch)

  any ideas or comments would be great hope I have explianed the question clearly enough

  See you soon

  See: http://www.vmware.com/files/pdf/implmenting_ms_network_load_balancing.pdf

  You must use the multicast.

  André

• Windows 2008 R2 server slow printing

  We have about 5-6 servers Windows 2008 R2 in our virtual machine environment.  All of these servers are servers very low utilization, and they all work very well.  We have a few domain controllers, a SQL box and a few boxes of web application that is running IIS.  One of these domain controllers is a print server.  The print server works well, but it is very slow.  If you right-click on any printer that is added to any of the customers and go to properties, where the server is the management of print server, the client must wait 30 seconds or more for the upcoming dialog with the properties.  You can click between tabs, but the legs are also slow to react.

  This means that if you make changes to the print job or the margins, for example, it may take a minute of waiting between screens.

  Now, we had a physical Windows 2000 print server that has worked well until we got the VM environment, so I know the problem is in one of a few different areas.

  1. it could be the VM environment.

  2. it may be Windows 2008 R2 server config or the server software itself.

  3 might be x 64 bit cause a problem with 32-bit clients using the box.

  I have excluded #3 by a 32 bit 2008 Server on the VM environment of loading, loading of print management and then by loading a single printer and share it.  The problem is still there on the current server.  My next step is to try Windows 2003 server in virtual machine environment, but before I do, I want to throw this question very curious to the VMWare community.  All I have to do before moving on to more drastic measures?  There must be something I can do to solve the problem.

  Maybe it's the solution.  Will test:

  http://support.Microsoft.com/kb/979394

• Can I install Windows 2008 R2 Server on a PowerEdge 2850 Server?

  I have a PowerEdge 2850 server, that when he was initially put in place (by someone else) had Windows 2003 R2 top.  However, when they put in place, the partitioned the C: drive with so little space that it is running out of space.  We got a newer Dell server and I turned that 2850 off the coast.  It was interrupted for a month or two.

  But I would like to use it as a backup of database server.  Can I install Windows 2008 R2 Server on a PowerEdge 2850 Server?

  You need to install RAID drivers during the installation of 2008R2.

  1. Configure and initialize the RAID in the CTRL-M utility.
  2. Download and extract the drivers put on USB (or CD).
  3. Start on media 2008R2.
  4. On the screen that asks you where you want to install Windows, click on load a driver link at the bottom left.
  5. Navigate to the location of the RAID drivers.
  6. Choose the drive to install, then install.

• Disabling RC4 encryption in the Windows 2008 SP2 Server

  Hello

  I just saw through the 2868725 Ko to disable the RC4.

  According to the article, we need to install the KB update, then we need to change the values of registry keys to disable the RC4.

  However, I could not find the download for the Windows 2008 SP2 server file in the download link

  https://support.Microsoft.com/en-us/KB/2868725

  Any suggestion how to disable the RC4 in Windows 2008 SP2.

  Need help.

  Thanks in advance.

  Here is the link for the Microsoft TechNet forum:
  http://social.technet.Microsoft.com/forums/en-us/home?Forum=w7itpronetworking

  Several related to the server forum (not for Desktop/Win7)https://social.technet.microsoft.com/Forums/windowsserver/en-us/home?category=windowsserver

• Network Load Balancing error

  Hello

  I have DC with 192.168.10.2 255.255.255.0 P.DNS 192.168.10.2 & ADC 192.168.10.3 P.DNS 192.168.10.2 255.255.255.0

  When I configure the network load balancing in win2012r2 std I get below error. Please help on this.

  "NLB Manager running on a system with all networks bound to NLB mifht does not work as expected.
  If all interfaces are ser to run NLB in "unicast" mode, Manager NLB will fail to connect to the hosts. »

  Thank you.

  This issue is beyond the scope of this site (for consumers) and to be sure, you get the best (and fastest) reply, we have to ask either on Technet (for IT Pro) or MSDN (for developers)
  *
  http://social.technet.Microsoft.com/forums/en-us/home s/fr-U.S./Accueil
  http://social.msdn.Microsoft.com/Forum

• Windows 2008 storage server shows 0 KB file size

  We use Windows 2008 storage server standard with Service Pack 2. Now we are facing the issue is Some of PDF, EXCEL, DOC files show in size 0 KB file, we are unable to open this type of file, if anyone knows pl give me the solution

  Hello

  I suggest you to ask your question on the link mentioned below that this forum is best suited for your question.

  http://social.technet.Microsoft.com/forums/en-us/w7itpronetworking/

  I hope this helps!

• Network Load Balancing

  Hello

  I have some difficulty of implementation, network load balancing in VMware - I'm not sure what mode of load balancing that I use.

  I have an ESXi 5.5 - host connected to a HP Procurve switch I have configured for 2 VLANS (40,41).

  On the switch, I created 2 trunks (Trk10, Trk20) I scored on two VLANs:

  trunk Trk10 trunk 23,47

  24,48 trunk Trk20 trunk

  VLAN 40

  name of "trial".

  untagged 1-22

  Tagged 50, Trk10, Trk20

  no ip address

  output

  VLAN 41

  name "PLC".

  tagless 25-46

  Tagged Trk10, Trk20

  no ip address

  output

  Port 23 and 47 will ESXi-host1 and port 24.48 will ESXi-host2.

  40 of VLAN is to have the network 192.168.40.0/24.

  41 of VLAN is to have the network 192.168.41.0/24.

  I created a virtual switch that has 2 NICs in it, but how do I set the load balancing mode?

  The virtual machine is slow on the internet right now, and I suspect the packets going to the VLAN evil.

  (Time of balancing mode is set to 'Route based on the original virtual port code').

  Kind regards

  Soren

  Let me know if you need more information.

  Could you do a 'show interface memory' and 'show interface' on the HP switch and paste it here?

  I would remove the trunks as I don't see why this is necessary in your configuration...

  Make sure the road based on virtual port ID what origin is selected on vSwitch1 and both exchanges configured (PLC and trial).

  Remove the trunks on the HP switch and tag/UNTAG required VLANS on individual ports that were previously used in these trunks...

  Quick config necessary for HP...

  conf t

  without trunk 23,47 Trk10 trunk

  without trunk Trk10 trunk 24.48

  VLAN 1

  23,24,47,48 not marked

  VLAN 40

  Tagged 23,24,47,48

  VLAN 41

  Tagged 23,24,47,48

  WARNING: You may have a few hickups network when you do...

  What model switch you use...?

  / Rubeck

• After a PtoV for a Windows 2008 R2 server, a disc is not visible

  Hello

  I just used the converter to make a PtoV for a Windows 2008 R2 server with 2 drives and the C: drive is there but the D: drive is not while there are several devices CD/DVD virtual results.

  In the converter D: drive has been cloned successfully and it is visible in the data store.

  Tahnk you for your help.

  Concerning

  Daniel

  You must check your "Disk Managment" for your disks and their mount points. HTH

• Manager Update 4 will not scan or clean up the Windows 2008 R2 server

  I just install a Windows 2008 R2 server, and Update Manager will not analyze it.  It just says: "Failed to scan or clean up SERVERNAME because of operating system not supported or unknown.  I can scan and clean up my plain Windows 2008 servers very well.  R2 is still not supported?

  I do not remember R2 being in the list of supported operating systems, I believe that this is also the case for the 4.0u1 VUM or VUM 4.0u1.1

  You'll probably want to make sure that the release notes, but if the error message says that it is not taken in charge, probably only is not supported.

  =========================================================================

  William Lam

  VMware vExpert 2009

  Scripts for VMware ESX/ESXi and resources at: http://engineering.ucsb.edu/~duonglt/vmware/

  Twitter: @lamw

  repository scripts vGhetto

  Introduction to the vMA (tips/tricks)

  Getting started with vSphere SDK for Perl

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