Fault of DNS round robin to 2 connection view servers

Similar Questions

• Several 5.2 connection view servers

  I'll implement the servers view new 5.2, with 5.1 when I place servers connection that they presented automatically for each other so when I went to the connection servers under the display configuration tab, I could see two connection servers. However in my new environment 5.2 after that I installed the second server connection has not started communicating with the first connection to the server. If at this stage, they are two completely separate connection servers. I wonder if I did something wrong or if 5.2 is just different from 5.1.

  I found the problem, apparently, when I want to add an additional login server to point 5.2 that I need to add it as a replica server and not a connection to the server.

• change the path of the fixed path selection strategy to round robin

  two questions

  1. is it safe to change the strategy of selection of the fixed path to round robin with the servers in the data store (round robin done work in our environment)

  2 can "lost access to the volume" messages be caused by too many servers using the same path of data warehouses. Many of the servers here use a couple of paths on a fixed track, instead of all four paths on round robin. I was wondering if the lost volume messages access were caused due to heavy traffic causing data 'pulse' written in the expiration time.

  1. is it safe to change the strategy of selection of the fixed path to round robin with the servers in the data store (round robin done work in our environment)

  You can, but first make sure that your table provider supports this configuration.

  2 can "lost access to the volume" messages be caused by too many servers using the same path of data warehouses. Many of the servers here use a couple of paths on a fixed track, instead of all four paths on round robin. I was wondering if the lost volume messages access were caused due to heavy traffic causing data 'pulse' written in the expiration time.

  Check if help: VMware KB: Host Connectivity degraded in ESX/ESXi

• Set Default PSP Round Robin ESXi 5.0U1

  This used to work on vSphere4, but does not seem to work now

  $esxCli = Get-EsxCli
   $esxCli.nmp.satp.setdefaultpsp(“VMW_PSP_RR”, “VMW_SATP_DEFAULT_AA”)
  
  Error:
  You cannot call a method on a null-valued expression.
  At C:\Documents and Settings\tclavell\Local Settings\Temp\3\f86a383f-6bcb-4426-
  887f-d8534bc291a1.ps1:3 char:31
  + $esxCli.nmp.satp.setdefaultpsp <<<< ("VMW_PSP_RR", "VMW_SATP_DEFAULT_AA")
      + CategoryInfo          : InvalidOperation: (setdefaultpsp:String) [], Run
     timeException
      + FullyQualifiedErrorId : InvokeMethodOnNull
  
  Version:
  PowerCLI Version
  ----------------
     VMware vSphere PowerCLI 5.0.1 build 581491
  ---------------
  The PSP for the Round Robin has changed?  According to my ESXi 5.0U1 host, I can't locate the PSP even longer.  Are we to use
  VMW_PSP_FIXED
  ~ # esxcli storage nmp satp list
  Name                 Default PSP    Description
  -------------------  -------------  -------------------------------------------------------
  VMW_SATP_ALUA        VMW_PSP_MRU    Supports non-specific arrays that use the ALUA protocol
  VMW_SATP_EVA         VMW_PSP_FIXED  Supports HP EVA
  VMW_SATP_MSA         VMW_PSP_MRU    Placeholder (plugin not loaded)
  VMW_SATP_DEFAULT_AP  VMW_PSP_MRU    Placeholder (plugin not loaded)
  VMW_SATP_SVC         VMW_PSP_FIXED  Placeholder (plugin not loaded)
  VMW_SATP_EQL         VMW_PSP_FIXED  Placeholder (plugin not loaded)
  VMW_SATP_INV         VMW_PSP_FIXED  Placeholder (plugin not loaded)
  VMW_SATP_ALUA_CX     VMW_PSP_FIXED  Placeholder (plugin not loaded)
  VMW_SATP_SYMM        VMW_PSP_FIXED  Placeholder (plugin not loaded)
  VMW_SATP_CX          VMW_PSP_MRU    Placeholder (plugin not loaded)
  VMW_SATP_LSI         VMW_PSP_MRU    Placeholder (plugin not loaded)
  VMW_SATP_DEFAULT_AA  VMW_PSP_FIXED  Supports non-specific active/active arrays
  VMW_SATP_LOCAL       VMW_PSP_FIXED  Supports direct attached devices
  ~ #
  			 
  Hi all
  I have several things to add here:
  * I have filed a bug for the initial post - error message is dark - the message in this case (referring non-existent namespace) should be "there are no namespace with the same name.
  On the the problem with the 'boot' setting - you run the command when you are connected to the vCenter Server? If so - try to run the same command directly against the ESX host. I look a little more on this subject...
  Vitali
  Team PowerCLI
  		   

• MSA 2000 fc vSphere and round robin

  I have a number of CF 2212 G1 MSA and MSA fc storage arrays 2312 G2 connected to 4 guests, I plan to upgrade to vsphere 4.0 ESXi 3.5. They have all two controllers and are run as active/active using fixed path. Licenses have been improved under the support agreement and will be the company licenses (as opposed to companies more)

  Can I use round robin on vsphere 4 with this configuration to provide the best balance between the 2 fabrics of SAN? Does anyone else has used alternate with this type of storage? I am a little concerned do this with the MSA212fc G1 because they do not have true active/active.

  Hello

  The VMware Compatibility Guide indicates the path policy should be set except HP make you otherwise it would not be supported.

  Kind regards

  Mike

  http://blog.laspina.ca/

  http://blog.laspina.ca/

  vExpert 2009

• "No DNS server," "PPPOE server," "Internet connection" - WARNING amber

  I'm troubleshooting on iMac my parents - there is a problem with the configuration of the Airport Extreme. The iMac is fully updated.

  During the configuration of the airport, I get this chart:

  

  Under 'Of Carol Airport,' I can't seen to change the State of the servers DNS, server PPOE and Internet connection. The iMac works fine without the airport connected... but when you're connected, I get these errors.

  How solve the three errors and get the router working again? Please provide very detailed responses, if possible. Thank you!!

  The problem lies in the device upstream 'Carol airport'.

  Reset by it turn it off and leave it like that for a few moments. Internet service providers often suggest disconnect their cable from their device as well (not the Ethernet cable between it and the AirPort Base Station - please leave one connected). There should be no need of power towards the low 'of Carol Airport', but there is no harm in doing so, either.

  Then, connect it to power again, and reconnect the cable if you disconnected it. Give it a moment to start to finish. Connect the "Carol airport', if you we turned off.

  Please proceed to configure the AirPort base station by following the instructions.

• Controller of domain and DNS behind RRAS without VPN connected directly to the internet with a Cisco router

  I hava a ME Cisco 3400 with physical single port available for a cable connection.

  The ISP give me an IP address interface = 89.120.29.89 to act as a gateway to the IP Address of the host, which is provided for in the order 89.120.29.90.

  The host computer is a dual Xeon computer with two NICs for LAN and WAN.

  Fields of application: to install a windows 2008 R2 between public and private network server.

  Even though I know it's not recomanded, I put the DNS role and directories Active Directory roles installed on the same computer, the computer above, (I do not have enough computer for roles different place on different computers)

  The desired configuration:

  To have installed with his roles behind a WS2008R2 has RRAS. without a VPN.

  b with VPN

  and for WAN access for the client computers of the private LAN Windows 7 OS. (The basin of LAN address 192.168.0.1 - 255).

  First step : to have internet access in the browser (I use Google chrome) (without taking into account the DNS and AD)

  Network configuration:

  Map NETWORK WAN, at the top of the stack of liaison in the Control Panel/network connections and sharing:

  Host IP: 89.120.29.90

  Mask: 255.255.255.252

  Gateway: 89.120.29.89

  DNS: 193.231.100.130 my ISP name server address.

  OK, I can browse the internet.

  Second stage. (Consider DNS and Active Directories)

  DNS instaled role for this computer.

  AD installed as a global catalog.

  NETWORK WAN server that is directly connected to the Cisco router:

  Conection area 3

  Properties:

  Client for Microsoft Netwaork: not verified

  Network Load Balancing: not verified

  File and shared printer: not verified

  QoSPacketScheduler: not verified;

  Microsoft Network Monitor 3 pilot: not verified

  IPv4                                                     ;  checked

  Pilot a Link Layer Topology Mapper i/o: checked

  Link layer Discover responder: checked

  IPv4 tab

  Host IP: 89.120.29.90

  Mask: 255.255.255.252

  Gateway: 89.120.29.89

  DNS: 193.231.100.130 my ISP name server address.

  under the tab advanced

  IP settings : even that, tab IPV4 with automatic metric check;

  DNS tab :

  Add primary and connection suffixes DNS specific: not verified

  Add suffixes primary DNS suffixes parents: not verified

  Add this DNS suffixes: no

  Registry deals with this connection in DNS: not verified;

  Use this connection DNS suffix in DNS registration: not verified;

  WINS tab : enable search LMHOST: not verified

  Enable NetBios over TCP IP: don't check;

  Disable NetBios on TCP IP: checked;

  Connection to the local network 2

  Properties :

  Client for Microsoft Netwaork: checked

  Network Load Balancing: no

  File and shared printer: checked

  QoS Packet Scheduler: not verified;

  Microsoft Network Monitor 3 pilot: not verified

  IPv4 checked

  Pilot a Link Layer Topology Mapper i/o: checked

  Link layer Discover responder: checked

  IPv4 tab

  NETWORK LAN CARD: 192.168.0.101

  Mask: 255.255.255.0

  Gateway: 192.168.0.1

  under Advanced tab:

  IP settings : even that, tab IPV4 with automatic metric check;

  DNS tab :

  Add primary and connection suffixes DNS specific: checked

  Add suffixes primary DNS suffixes parents: not verified

  Add this DNS suffixes: no

  Registry deals with this connection in DNS: checked;

  Use this connection DNS suffix in DNS registration: checked;

  WINS tab : enable search LMHOST: not verified

  Enable NetBios over TCP IP: check;

  Disable NetBios on TCP IP: not verified;

  Install RRAS as NAT (NAT) under any condition imposed by DHCP(not installed) in ideea that RRAS will generate the private IP address of the DHCP allocator.

  In any case, for the beginning, I have a fix IP, do not get IP automatically.

  At this point, it gets the configuration simple posible for RRAS follows:

  3, LAN connection that corespond to the WAN interface IP:

  "NAT configured for the following Internet interface: Local Area Connection 3.
  The clients on the local network will assign the IP addresses of the following range:

  network address: 192.168.0.0. netmask 255.255.0.0.

  After Windows RRAS are open:

  The Network Interfaces tab:

  NICs are enabled and connected;

  UAL remotely & policies:

  Launch NPS,

  on the NPS server tab:

  Allow access to successful Active Directory directories:

  Properties: authentication: port 1812,1645

  kept port 1813,1646;

  on the accounting tab: nothing;

  under NPS policies:

  Grant permission for the RRAS server under builin\Administrator of the accounts;

  On strategy and the type of server unspecified (NAT do not exist as an entry in the drop-down list server dwn)

  under the static road: nothing;

  under the IPv4 tab or both are there(there IP) and are up

  under NAT

  Connection to the local network 3: public interface connected to the internet

  enable NAT on this interface:

  under the address pool: ISP addresses public;(two addresses)

  under the terms of service and the ports: Web server: http 80.

  (I have I have a static IP address for the client computer in mind, I set up a single customer).

  At the client computer :

  configured as domain customer and added to the users AD and computer AD

  logon to the domain:

  Local Area Connection

  Properties:

  Client for Microsoft Netwaork: checked

  Network Load Balancing: not verified

  File sharing and printer: checked

  QoS Packet Scheduler: checked;

  Microsoft Network Monitor 3 pilot: not verified

  IPv4                                                     ;  checked

  Pilot a Link Layer Topology Mapper i/o: checked

  Link layer Discover responder: checked

  IPv4 tab

  Host IP: 192.168.0.101

  Mask: 255.255.0.0

  Gateway: 192.168.0.1

  DNS: (auto-add the same to the local machine).

  under the tab advanced

  IP settings : even that, tab IPV4 with automatic metric check;

  DNS tab :

  Add primary and connection suffixes DNS specific: checked

  Add suffixes primary DNS suffixes parents: not verified

  Add this DNS suffixes: no

  Registry deals with this connection in DNS: checked;

  Use this connection DNS suffix in DNS registration: checked;

  WINS tab : enable search LMHOST: not verified

  Enable NetBios over TCP IP: checked;

  Disable NetBios on TCP IP: not verified;

  right now the 192.168.0.101 client cannot connect to internet through RRAS.

  ;

  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

• Round Robin PSP

  Buenas,

  queria formular una pregunta relacionada con the caminos Round Robin balanceo politica. Por el defecto e/s operation limit of esta politica in vsphere 5 are of 1000 comandos E/S.

  Hay several recommandations al respecto, sobretodo TR el trafico cabina dado por alguna VM than genere viene muchas helps in las una config del IO operation limits con bajos values (1 to 3 E / S in los detrimento 1000 comandos E/S por defecto), pueden ser mejores.

  Hay of autores that defienden esa causa having into account back handicaps, como el mayor consumo procesador nuestro ESXi host para manage el traspaso los comandos por los cada tan poco tiempo o paths well cabinas that can use hidden a nivel puerto y hacerlas volver a poco Louis (hidden lately aunque a nivel puerto aren't often find in las nuevas cabinas).

  In Relación a esto, ¿habeis hecho algun cambio in los para operation IO Round Robin, monitor objetivamente showing of flow limitation?

  Por otra parte, con Round Robin, in case of caida UN camino (is corta el cable, oh), if el camino vuelve life, Robin volvera a utilizarlo para enviar comandos o ¿Round is el aislara?

  Saludos thanks

  Hola compañero,

  answering intento a tus dudas.

  None are to change el PSP obligado a Round Robin. ES mas hacerlo sin a good reason can give problems.

  VMware is select los protocolos multipathing than van a funcionar in 99.99% of cases, para 'tocarlo' hay than estar seguro what y porque is hace.

  If to select el operation IO limit a 1 en PSP el, usually to experimenta UN Mayor flow acceso a esa LUN in concreto of the cabina.

  Desde mi experiencia, is can pasar a Round Robin con el limited IO operation has 1, siempre as manufacturer of the cabina datos el asi lo explains in its document of best practices.

  Por ultimo, if to cae UN camino, y to vuelve a recover pasado a tiempo, el alternating vuelve a usar el camino con normal. No todos los types for PSP is compartan asi (consulta P.D2 mi)

  Espero ayuda sido acercado

  Kind regards

  Pablo

  P.D1: Algo of information of este tema en UN vmware kb:

  VMware KB: Setting limit Round Robin IOPS / s by default of 1000 to 1

  PD2: Te perfect consultar el siguiente PSP, vale la Peña las sober vmware kb:

  VMware KB: Policies of Multipathing in ESXi ESXi/ESX 4.x and 5.x

• Why you should not use NMP/round robin MPIO with MSCS in ESXi < 5.5?

  There, could someone explain to me why MSCS do not work well with turnstile NMP on ESXi < v5.5?  Best explanation I've seen is that each path is "seen" differently by the guest operating system continuously, send commands to reset and SCSI reservation everything slow.  No doubt this could complicate situations requiring a turnaround as well...

  Looking for a good explanation - which would also help me to understand how it "works" in ESXi 5.5 + now.

  According to Cormac Hogan:

  In the past, political path of round robin might not supported on MSCS shared storage. It was because of the inability to release SCSI reservations on some routes when the reserve has been placed on a different path on the same disk. With the release of vSphere 5.5, this problem has now been addressed and we support RR on storage that is consumed by the MSCS nodes.

  source

• Change the path to the Round Robin of the newest storage used

  Dear Experts,

  For one of our guests (on two hosts total), which is presented with two data warehouses:

  -Storage 1 (works with RoundRobin vmware)

  -Storage 2 (works with most recent used vmware)

  I need to know if I can change it so that things work and there are two VM in this data store 'storage 2'.

  All the foregoing gave two data warehouses are working with (Round Robin vmware) with host 2nd in our environment

  Please notify

  Just did on one of the used data stores. No problems.

  Just follow this Article

  VMware KB: Changing the path information for ESX ESXi hosts to access

• PowerCLI, Multipathing change: fixed RDM and VMFS of Round Robin

  With the new improvements in vSphere native mulit pathing (NMP) in 5.1, I tried to change my LUN to use repetition alternated according to EMC with my flare VNX practices code.

  However, I also have MSCS clusters that don't support a fixed mode according to the http://kb.vmware.com/kb/1037959.

  Later, I want to get all my VMFS volumes and set them to Round Robin and let all of my RDMs set to fixed.

  I'm hoping to dynamically so that I can leave it with the admin here to run whenever he wants, but I'm fighting to achieve.

  What I've tried so far.

  I can get all my LUNS with these commands.

  $esxcli= Get-EsxCli

  $Allmyluns = Get - esxcli.storage.nmp.device.list () | Where {$_ .device - like 'naa.*'}

  I can get all my RDM with this command

  $RDMS = get - vm | Get-hard drive | where {$_.} SCSIcanonicalname - like 'naa.* ' | Select SCSIcanonicalname

  I can put the method once I have the storage in this way

  $esxcli= Get-EsxCli

  Foreach ($lun in $allmyluns({

  $esxcli.nmp.device.setpolicy($null, $_.Name,"VMW_PSP_RR")

  }

  I have also thought about writing a csv or text file with the first command and trying to remove the entries with the second command but that is a bit past me, and I may be trying to over-complicate things unnecessarily.

  
  

  But what I can’t do is work out how to get a list whenever I want that has all the VMFS LUNS but not any of the RDM LUNS. So I can dynamically feed this into a script which updates VMFS pathing to Round Robin.

  
  

  Any help, input or ideas would be greatly appreciated

  This should help you all VMFS LUNS.

  Get-Datastore | where {$_.Type -eq "VMFS"} | %{  $_.ExtensionData.Info.Vmfs.Extent | %{    $_.DiskName  }}
  

• move on to the Round Robin

  Hello people,

  I'm a bit confused. I have my now see that they are defined as VMW_SATP_ALUA_CX and storage (EMC CX) defined on the failover mode 4, host rebooted. I think that now, I can go in each data store and change the path of 'Round Robin (VMware)' selection. I do a lot of MSCS and noticed that the Round Robin is not supported with SAM. I found the underside of VMware. He says Round Robin PSP is not supported for the LUNS mapped by RDM, but then there is a "note" that says with NMP, clustering is not supported when the value of the Round Robin. It's my confusion is not the note by repeating exactly what he says just on top of it, or I'm not getting something? Also, I'm running 5.0, are there other changes that I have to do to make this work?

  Strategy selection of the path (PSP)

  Round Robin PSP is not supported for the LUNS mapped by RDM used with shared cluster storage. If you decide to use PSP Round Robin with your storage array, or if the version of vSphere to uses the default values for PSP Round Robin for the table in use, you can change the PSP claiming the RDM LUN above other PSP. For more information, see editing a unit number logic to use another path selection policy (PSP) (1036189).

  Note: with native multipathing (NMP), clustering not is not supported when the strategy of path is set to Round Robin. For more information, see vSphere MSCS Setup Limitations in the configuration for Failover Clustering and Microsoft Cluster Service Guide for ESXi/ESX 4.x or 5.x ESXi.

  Any help would be great. This confuses me

  -MN

  For data warehouses, use RR and ALUA (4 failover mode) mode.

  For members of the MSCS (RDM) cluster, you will need to use fixed.

• Change LUN to round Robin

  Hello, a few weeks ago, I found a command when issued via an SSH session, set multiple paths for all the LUNS of Round-Robin. It was a single line command that worked for all LUNS existing and new LUNS after a reboot.

  However, I can't find now command - does anyone know the syntax?

  Thank you

  See the discussion below:

  http://communities.VMware.com/thread/331346

• Round Robin

  Hello

  Can I know what is alternate., it's a way of storage? Can someone please develop on that? or any link that explains things around that?

  Thank you

  Prashant

  Round Robin is a strategy of creating paths to storage, it is fixed, more recently used and round robin.

  Basically, if you have active/active paths in your data store you can use RR this alternate paths so that the load is balanced on between two active paths, where fixed and MRU used only one path unless there is a power failure.

  Not all storage arrays are supported RR... Here's a quick link

  http://KB.VMware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalID=1011340

• Can definition of Round Robin way strategy - I just use the GUI?

  I have HP EVA6400 arrays and also HP XP20000.

  I use ESX 4.1 U1 and the recommendation of HP is using Multipathing Round Robin policy.

  I guess I could just use the vSphere client and select configuration > storage > datastore > properties > manage paths > Round Robin > change

  
  This approach would have certainly changed politics of this server for the selected LUN path, then repeat for each.

  But I read something on a blog lastnight that said having to perform the setting of the path of the CLI to set VMW_PSP_RR nmp esxcli.

  
  Can someone enlighten me please.

  
  Thank you

  You can use the command-line like esxcli well:

  List of devices esxcli nmp

  esxcli device setpolicy - device - psp VMW_PSP_RR nmp