Manually load balancing / setting of the LUN paths.

Similar Questions

• VPN3000 Load Balancing - synchronization of the Configuration

  I have found information on the configuration of hubs for load-balancing and realized that. I can't find any information on how the Member devices keep their configurations in sync. Is it automatic or is it necessary to update all members manually when changes are made?

  Dennis,

  Automatic synchronization of the configuration on the hubs is not possible. You must manually synchronize the configs.

  See you soon

  Gilbert

  Rate this post if it helps

• What load balancing algorithm using the LRT224?

  I was wondering if anyone knew what algorithm of load balancing the LRT224 use since I can't find it anywhere and the telephone support line does not.  It is very similar to the RV320 of Cisco that uses Weighted Round Robin, but I don't think that the Linksys uses this algorithm because it includes speeds of bandwidth unlike the cisco that does not work.  and if anyone can also check that this unit doesn't package base rather than load balanced session load balancing.  as much information as possible would be appreciated!

  The standard of the LRT load balancing is alternated:

  Example:

  1 TCP connection to website-online WAN1

  2 TCP connection to website2.com-online WAN2

  3 TCP connection to website2.com-online WAN1

  4 TCP connection to website1.com-online WAN2

  If you enable the feature (recommended) sticky load balancing load balancing is done on a base per session instead of the base of the connection.

  Example:

  1 TCP connection to website-online WAN1

  2 TCP connection to website2.com-online WAN2

  3 TCP connection to website2.com-online WAN2

  4 TCP connection to website1.com-online WAN1

• manual load balancing or tnsnames load balancing

  Hussein,
  
  We have 2 nodes apps (apps1 and apps2 both on a separate machine) connection to a database of cars 2 nodes (db1 and db2 both on a separate machine).
  We want to apply the load balancing across 2 application servers. I "heard" can be actually using the tnsnames.ora load balancer? Or I'm just out of this world. :)
  
  Thank you very much
  
  Ms. K

  Salvation;

  Please check below and see its helpful:

  11i RAC JDBC & listener Load Balancing Configuration [244366.1 ID]
  Implementation of load balancing across Oracle eBusiness Suite - Documentation specific Load Balancer Hardware [ID 727171.1]
  In 11i [ID 148516.1] load balancing
  How http://ID to ensure the load balancing of concurrent process CFP - RAC Configuration Manager 762024.1
  Configuration of 11i for balancing [ID 117421.1]
  JSP error after implementing [ID 269208.1] JDBC load balancing
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  Respect of
  HELIOS

• VPN 3030 load balancing

  Hi all

  Asked me to configure the load balancing between two hub Cisco VPN (Cisco VPN 3030).

  I set up two such boxes mentioned in the cisco Web site

  [url] https://www.Cisco.com/en/us/products/HW/vpndevc/ps2284/products_tech_note09186a0080094b4a.shtml [url]

  After you enable VPN load balancing, I get the error described for 30 seconds.

  Quote:

  Master double detected LBSSF [0003a 0889463] and going to SLAVE

  One of my friends said me that try with encryption active but not different.

  I searched in google but did not get any solution. I am now hlepless. If any of you guys have met this kind of problem before could you please help to solve this problem...

  Thank you

  Please set each device to have different priorities and then charge two devices.

  If this does not work then you can confirm your settings of the VCA have been properly configured and applied to the public interface? The following links provide more details on how to configure filters VCA:

  https://www.Cisco.com/en/us/products/HW/vpndevc/ps2284/products_tech_note09186a0080094b4a.shtml#C2

  Kind regards
  ATRI

• 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

• Nexus 1000v, UCS, and Microsoft NETWORK load balancing

  Hi all

  I have a client that implements a new Exchange 2010 environment. They have an obligation to configure load balancing for Client Access servers. The environment consists of VMware vShpere running on top of Cisco UCS blades with the Nexus 1000v dvSwitch.

  Everything I've read so far indicates that I must do the following:

  1 configure MS in Multicast mode load balancing (by selecting the IGMP protocol option).

  2. create a static ARP entry for the address of virtual cluster on the router for the subnet of the server.

  3. (maybe) configure a static MAC table entry on the router for the subnet of the server.

  3. (maybe) to disable the IGMP snooping on the VLAN appropriate in the Nexus 1000v.

  My questions are:

  1. any person running successfully a similar configuration?

  2 are there missing steps in the list above, or I shouldn't do?

  3. If I am disabling the snooping IGMP on the Nexus 1000v should I also disable it on the fabric of UCS interconnections and router?

  Thanks a lot for your time,.

  Aaron

  Aaron,

  The steps above you are correct, you need steps 1-4 to operate correctly.  Normally people will create a VLAN separate to their interfaces NLB/subnet, to prevent floods mcast uncessisary frameworks within the network.

  To answer your questions

  (1) I saw multiple clients run this configuration

  (2) the steps you are correct

  (3) you can't toggle the on UCS IGMP snooping.  It is enabled by default and not a configurable option.  There is no need to change anything within the UCS regarding MS NLB with the above procedure.  FYI - the ability to disable/enable the snooping IGMP on UCS is scheduled for a next version 2.1.

  
  
  This is the correct method untill the time we have the option of configuring static multicast mac entries on
  
  the Nexus 1000v.  If this is a feature you'd like, please open a TAC case and request for bug CSCtb93725 to be linked to your SR.
  
  This will give more "push" to our develpment team to prioritize this request.
  Hopefully some other customers can share their experience.
  Regards,

  Robert

• PIX / ASA - OSPF load balancing

  Hello

  I read the balance a route via OSPF equal cost load the PIX. It will send packages via per package, or is there another method for distibuting the traffic to the break following equal cost?

  Thank you!!

  Lee

  Hello Lawrence,.

  PIX 6.3 now supports the NLB using OSPF only (up to 3 default routes)

  The PIX can receive up to 3 doors by default (all the same metric) 3 different routes of entry, and

  balance the load on a per destination basis. Currently, there is no way the PIX to

  determine which carries a package will be sent to. You cannot currently use static routes

  for load balancing.

  The used hash algorithm is not simple, it is very difficult to determine which

  Route (next hop) a package will be given an IP Source and Destination pair. Basically,.

  the PIX takes the source and destination IPs (two 32-bit numbers) and axe in one

  16-bit unique number. Then the number of 16-bit (0x0000 - 0xFFFF) is divided into thirds.

  The first 1/3 goes to the door of entry 1, the next 1/3 goes to the door of entry 2, and the last 1/3 goes to

  Gateway 3.

  I hope this helps! If Yes, please rate.

  Thank you

• Configure load balancing NETWORK for Exchange 2010

  Hello guys.

  I need help. Where I work, we have a project where we configure Exchange 2010 DAG and some other stuff, and we have 2 ESX with 1 CAD server and a Server CASE/HUB too on both of them and that we want to use the NLB on these two hosts.

  I found this, and this is much like what we want:

  http://KB.VMware.com/selfservice/microsites/search.do?language=en_US & cmd = displayKC & externalId = 1006525

  So now our switch we want to create a virtual IP address for each of them, but we are not sure if we need to create a cluster on our servers for this.

  Did someone done this before that could give me some advice or contains information to make this work?

  Thanks for your help.

  Howdy,

  Am I was right assuming you want balancing two virtual computers CASE/Hub and NO servers DAG?  If Yes, then we are good to proceed... (if you want to do DAG servers load balancing, or if the DAG servers have all three roles, MBX/CASE/Hub, then Windows NLB is prohibited).

  You don't need to create a cluster as in MSCS or the Windows failover cluster, but do not create a pool of machines for load balancing.  You must install the components of Windows NLB on each machine virtual (VM Hub/CASE) and then follow the procedures described in this document: http://www.vmware.com/files/pdf/implmenting_ms_network_load_balancing.pdf to correctly configure the ESX host.  There are two ways to configure a WNLB, using the multicast and uni-cast (by default).  Uni-cast requires configuration changes side ESX (detailed in the document), multi-cast has some dependencies upstream network, mainly adding static arp entry in the router.

  Take a read through the white book (it was written by VI3, but the same thing applies in vSphere) and let me know if you have any questions.

  -alex

  Check out our Blog: http://blogs.vmware.com/apps

• Http-plugin supports metric base load balancing? like Mod_OC4J!

  He supports balancing the metric-based in Oracle 10 g AS OC4J.
  
  It's a good way to spread the query load among OC4Js based on a metric which was reported by OC4Js.
  
  When load balancing based on the metric system is enabled, requests are routed between based OC4Js on the report of a defined metric, as the ratio of round robin, automatic relaxing... etc.
  
  
  WebLogic server HTTP-Plugin has similar features? Could experts suggest simiilar workaround (s) or solution (s) Please?

  Johna Pakas wrote:

  Sean KTN says:

  Kumashiro Shiniti wrote:

  Johna Pakas wrote:

  I think you should connect with Oracle Sales. Let them to clarify.

  It is a good idea.

  Since now, WLS have no metric based load balancing.
  For load balancing, you must configure the proxy servers.

  http://e-docs.BEA.com/WLS/docs103/cluster/setup.html
  http://e-docs.BEA.com/WLS/docs103/cluster/load_balancing.html

  Give them some pressure to release new features.

  My concern, metric according to load balancing is explicitly vital for most of the users using OC4J. Y at - it no alternative to measure loading WLS? As I can build module
  or plugin Web levels... of course raise this request to my sys development team exactly.

  WLS do support 3 types:-Round Robin load balancing, load balancing based on the weight & Random load balancing.
  In the near future, I guess they do not provide as metric base load balancing MOD_OC4J.

  If you like to take some tasks to measure, I sugget contact you your sales local oracle for assistance. They have probably you persuade enjoying service professinal anyway.

• Political multi-channel Fixed and enter preffered paths balance for a set of RDM Lun

  Hi all

  I was hoping that someone with some experience PowerCLI might help me with the following problem.

  Short version:

  I need to adapt this script http://vmjunkie.wordpress.com/2009/01/29/balancing-lun-paths-on-your-esx-hosts-with-powershell/ to accept the entry of a canonical name text file...

  Long version:

  We have a number of LUNS of RDM used by Microsoft the Failover Clusters, in accordance with the recommendation from the storage provider (Dell), we need to define all teas LUN to have a multi-path of FIXED policy and want to balance these on both paths.

  I can get the canonical name for each LUN RDM using this script;

  Get-VM-Location"Cluster Name" | Get-HardDisk -DiskType "RawPhysical","RawVirtual"| SelectParent,Name,DiskType,ScsiCanonicalName

  (Of http://www.definit.co.uk/2013/03/powercli-script-to-set-rdm-luns-to-perennially-reserved-fixes-slow-boot-of-esxi-5-1-with-mscs-rdms/#more-1526( )

  I then manually identify the LUNS that have to be changed since the text output.  So, basically, I have a text file containing the canonical each of the RDM LUN name I need to change to fixed.

  LUNS.txt

  NAA.6000d31000331e0000000000000000c0

  NAA.6000d31000331e0000000000000000c1

  NAA.6000d31000331e0000000000000000c2

  NAA.6000d31000331e0000000000000000c3

  NAA.6000d31000331e0000000000000000c4

  NAA.6000d31000331e0000000000000000c5

  I can't run this command to set the Fixed multichannel strategy because I need the PreferredPath variable.

  Get-vmhost 'host name ' | Get-scsilun 'naa.6000d31000331e0000000000000000c0 ' | game-scsilun - multipathpolicy 'Fixed '.

  
  

  "If the MultipathPolicy parameter is set to 'Fixed', you must specify the parameter of PreferredPath."

  I can then get the paths by using this command:

  Get-vmhost 'host name ' | Get-scsilun 'naa.6000d31000331e0000000000000000c0 ' | Get-scsilunpath

  Favorite SanID state name
  ----       -----                                    -----      ---------
  FC.2000... False Active 50:00:D3:10:00:33:1e:19
  FC.2000... False Active 50:00:D3:10:00:33:1e:1 has

  Basically, I need to adapt this script (from here http://vmjunkie.wordpress.com/2009/01/29/balancing-lun-paths-on-your-esx-hosts-with-powershell/) at the entrance to a text file of canonical names.

  # Cluster-wide LUN Path Load Balancing Script

  # Written by Justin Emerson, http://vmjunkie.wordpress.com

  # Idea originally from a PERL script I saw here:

  #    http://www.yellow-bricks.com/2008/04/01/load-balancing-activeactive-sans/

  # This script requires the VI Toolkit version 1.5

  # NOTE: This script assumes that every LUN has the same number of paths.

  #       If you have multiple storage arrays, and they have different numbers of paths,

  #       I make no guarentees that this will work!

  # If you have an improvement to this script, please feel free to leave a comment on my blog!

  Write-Host"This script will modify the policy of all your shared LUNs on all ESX Servers"-ForegroundColorCyan

  Write-Host"in a Cluster to Fixed and select a preferred path in a round-robin fashion."-ForegroundColorCyan

  if ($args.Length -eq0) {$clusterName= Read-Host"Please enter the Cluster name"} else {$clusterName= $args[0]}

  $VMHosts= Get-Cluster$clusterName| Get-VMHost

  # Run through this loop for each host in the cluster

  foreach($VMHostin $VMHosts)

  {

      # Keep only disks of luntype "disk" to avoid any storageArrayController devices.

      # Filter to only objects where the ConsoleDeviceName starts with vml to avoid any DAS disks.

      # Note: I have tested both HP EVA and Xiotech storage and SAN LUNs always appear this way.

      # Please check if this is the same on your storage before running.

      $luns= $VMHost|get-scsilun-luntypedisk|

      where-object{$_.ConsoleDeviceName -like"/vmfs/devices/disks/vml*"}|Sort-ObjectCanonicalName

      $firstLUNPaths= Get-ScsiLunPath$luns[0]

      $numPaths= $firstLUNPaths.Length

      $count= 0

      foreach($lunin $luns)

      {

          if ($count-ge$numPaths) { $count= 0 }

          $paths= Get-ScsiLunPath-ScsiLun$lun

          $lun|Set-ScsiLun-MultipathPolicyFixed -PreferredPath$paths[$count]

          $count+= 1

          # Sleep for 30 seconds as I've heard some arrays dont like doing this too fast.

          Start-Sleep-Seconds30

      }

  }

  Any help would be greatly appreciated.

  See you soon,.

  Patrick

  Do you have something like this in mind?

  $esxName = "MyEsx" $lunFile = "./luns.txt"
  $lunNames = Get-Content $lunFile $VMHost = Get-VMHost -Name $esxName
  # Find the LUN with the least number of paths
  $leastLUNPaths = Get-ScsiLun -VmHost $VMHost -LunType disk | Sort-Object -Descending -Property {
    Get-ScsiLunPath -ScsiLun $_ | Measure-Object | Select -ExpandProperty Count} | Select -First 1 | Get-ScsiLunPath
  $numPaths = $leastLUNPaths.Length
  $count = 0 foreach ($lunName in $lunNames)
  {
    $lun = Get-ScsiLun $lunName -VmHost $VMHost  if ($count -ge $numPaths) { $count = 0 }
    $paths = Get-ScsiLunPath -ScsiLun $lun  $lun|Set-ScsiLun -MultipathPolicy Fixed -PreferredPath $paths[$count]
    $count += 1  # Sleep for 30 seconds as I've heard some arrays dont like doing this too fast.
    Start-Sleep -Seconds 30}
  

• Someone at - he set up the Insight Log load balancing?

  Hello

  We try to log configuration Insight in a load-balanced, and cluster configuration. After the search tirelessly for blogs, the question on this forum, or other persons who completed it and shared their installation that I found nothing. The only thing that comes close is http://sflanders.net/2014/05/01/log-insight-2-0-beta-load-balancing/ , but indicates only how it will come in a future post!

  I was going to Setup Proxy HA, but from my understanding it will not charge the way UDP traffic that newspapers Insight will want to have it transmitted information. Because we want to send more, otherwise all traffic to syslog to log Insight area, we would need to use UDP 514.

  Those who have actually set up load balancing, you followed a guide? If not, could you share how you accomplished, setting up your environment to balance between several workers?

  Any help is appreciated!

  -Patrick

  Hey Patrick,

  I just posted a more practical guide this morning: http://sflanders.net/2014/06/24/log-insight-external-load-balancer-configurations/

  You can use HAproxy, but if you need UDP, then you're right in that it will not be to your needs. If you are looking for a free/free alternative, take a look at: downloads | Load balancer Zen

  If you have any other questions, please let me know!

• Having trouble getting the correct strategy of the ESXi 5.1 Compellent Lun path selection

  Here's the FCoE connections to a Compellent table. I was looking for in fact as expected on some new 5.1 ESXi hosts. I changed the default home setting "esxcli storage set - default-psp VMW_PSP_RR - ATAS VMW_SATP_DEFAULT_AA ATAS nmp. The LUN showed 2 paths, Type of storage array showed VMW_SATP_DEFAULT_AA and path selection has been set for the Round Robin.

  I finished rebuilding my hosts with ESXi 5.1 update 1 and made the same change but now the LUN show as VMW_SATP_LOCAL and fixed and I can see only one way? I do not understand why it reacts differently now. Does anyone have any suggestions?

  ~ # esxcli storage nmp ATAS list

  Description of default name PSP

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

  VMW_SATP_MSA VMW_PSP_MRU placeholder (not loaded plugin)

  VMW_SATP_ALUA VMW_PSP_MRU placeholder (not loaded plugin)

  VMW_SATP_DEFAULT_AP VMW_PSP_MRU placeholder (not loaded plugin)

  VMW_SATP_SVC VMW_PSP_FIXED placeholder (not loaded plugin)

  VMW_SATP_EQL VMW_PSP_FIXED placeholder (not loaded plugin)

  VMW_SATP_INV VMW_PSP_FIXED placeholder (not loaded plugin)

  VMW_SATP_EVA VMW_PSP_FIXED placeholder (not loaded plugin)

  VMW_SATP_ALUA_CX VMW_PSP_RR placeholder (not loaded plugin)

  VMW_SATP_SYMM VMW_PSP_RR placeholder (not loaded plugin)

  VMW_SATP_CX VMW_PSP_MRU placeholder (not loaded plugin)

  VMW_SATP_LSI VMW_PSP_MRU placeholder (not loaded plugin)

  Non-specific bays of VMW_SATP_DEFAULT_AA VMW_PSP_RR Supports active/active

  VMW_SATP_LOCAL VMW_PSP_FIXED direct support of connected devices

  Thanks for the reply. I found the problem. I had to add a rule esxcli storage nmp ATAS FCoE add - transport fcoe - ATAS VMW_SATP_DEFAULT_AA - description 'Fibre Channel over Ethernet devices' I forgot to note that I did it on the first generation and completely forgotten. Once I added this to the existing a new LUN all show type and path of the storage of table selection.

• 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.

• Adpaters/active with the vPort ID load balancing

  Looking at the following configuration, my understanding is that some virtual machines in this group of ports will use vmnic1 and some will use vmnic6 (based on their ID vport).  Pretty simple.

  Assume that the uplink different swithces cards.  This works because there is no tree blocking one of the unplinks.  Question is: what happens to traffic on vmnic6 if the link fails? (failure of the local liaison, NIC failure, etc. - I'm even not consider upstream failure here).  My understanding is that vmnic1 will not resume because the windows are related to the vmnic6.  Only if there is a Standby adapter is there a link to relief for vmnic6 or vmnic1.  In other words, with vPort (no Etherchannel) of load balancing, two active/active adapters are not 'Standby' to each other.  Is that correct, or am I wrong?

  I ask because I see this routinely on customer sites.  But what I always have it set up as a channel of port for a single switch, if two switches or was to be used, then I made active/active and then included a Standby adapter for failover should one Fail of active principles.  Or, if all I need is resumed, not load balancing, I just did a single active/passive and alternate ports between them as a form of manual balancing groups.

  I always just assumed Active would not switch to another asset without a port channel/IP-hash config (where the whole reason for standby in the first place).  I'm quite right or completely wrong?  Later today, I want to test this is a lab while monitoring with top.

  

  With the default configuration in your example, the virtual machine-> Teddy assignment is when a virtual machine is running. In the case of a Teddy/link failure the VMs will be assigned to other natachasery. A standby NIC cannot be used unless there is a power failure.

  André