iSCSI - two subnets on a vswitch iscsi ports link

Similar Questions

• Best practices for network configuration of vSphere with two subnets?

  Well, then I'll set up 3 ESXi hosts connected to storage shared with two different subnets. I configured the iSCSI initiator and the iSCSI with his own default gateway - 192.168.1.1 - targets through a Cisco router and did the same with the hosts configured with its own default gateway - 192.168.2.2. I don't know if I should have a router in the middle to route traffic between two subnets since I use iSCSI ports linking and grouping of NETWORK cards. If I shouldn't use a physical router, how do I route the traffic between different subnets and use iSCSI ports binding at the same time. What are the best practices for the implementation of a network with two subnets vSphere (ESX host network: iSCSI network)? Thank you in advance.

  Install the most common iSCSI would be traffic between hosts and

  the storage is not being routed, because a router it could reduce performance.

  If you have VLAN 10(192.168.1.0/24) iSCSI, VLAN 20 (192.168.2.0/24) ESX

  MGMT and VLAN 30 (192.168.3.0/24) comments VMs and VLAN 40 (192.168.4.0/24)

  vMotion a deployment scenario might be something like:

  NIC1 - vSwitch 0 - active VMK (192.168.1.10) MGMT, vMotion VMK (192.168.4.10)

  standby

  NIC2 - vSwitch 1 - current (VLAN30) guest virtual machine port group

  NIC3 - vSwitch 2 - active VMK1 (192.168.1.10) iSCSI

  NIC4 - vSwitch 2 - active VMK2 (192.168.1.11) iSCSI

  NIC5 - vSwitch 1 - current (VLAN30) guest virtual machine port group

  NIC6 - vSwitch 0 - MGMT VMK (192.168.2.10) standby, vMotion

  VMK (192.168.4.10) active

  You would place you on VLAN 10 storage with an IP address of something like target

  192.168.1.8 and iSCSI traffic would remain on this VLAN. The default value

  gateway configured in ESXi would be the router the VLAN 20 with an ip address of

  something like 192.168.2.1. I hope that scenario help set some options.

  Tuesday, June 24, 2014 19:16, vctl [email protected]>

• Question of ISCSI port

  Hello

  If a dell MD3000i to a switch conneccted second ISCSI port and IP address in the same reng-IP (10.0.10.0) of other servers that are connected to the same switch, drives in the device would be available (via ISCSI inititor) to one of the servers that are connected to this switch? is that correct? now becuse one of the ports of ISCSI SAN is connected directly to the NETWORK card of one of the servers and the ISCSI port and the server NETWORK card is configured with the ip address of 192.168.8.0 but the rest of the servers in the domain is configured with IP reng 10.0.10.0, so all the other server has direct access to the San.

  Also how can we change the IP address of the second ISCSI port

  Thank you

  Servers should not communicate on the LAN with the SAN. The SAN must be on its own dedicated (and isolated) switch or VLAN. Each server then uses at least 1 NETWORK card in the switch or VLAN and it is assigned an IP address of the iSCSI subnet. For redundant configurations, you will use 2 switches or 2 VLANS on 2 switches (of the sort that if 1 switch goes down, iSCSI traffic continues with the other switches).

  When you use just 1 switch or VLAN, use only the 0 of each controller port (port 0 between 2 controllers will share the same subnet (but obviously have a different IP address).)

• several subnets by VLANS and ports link

  Hello

  I need some clarification.

  Our iSCSI SAN storage (Dell MD3660i0 requires a separate subnet by port.

  We require paths multiple access and balancing in VMware.

  To achieve this in ESXi 5.1 we need binding ports... BUT the binding of ports is supported only if the vmks are all in the SAME domain in accordance with these two KBs broadcasting

  VMware KB: Considerations for use binding software iSCSI ports in ESX/ESXi

  VMware KB: When the use of several VMkernel ports with port required to access the storage of two or more tables on different br...

  OK... probably so I simply put my all subnets in ISCSI storage in one VLAN and everything will be ok (one VLAN is after all a broadcast domain, both are stuff of L2)... This would respond to the requirements of KBs... If VMware means "area of distribution" in the true sense of the term.

  So my question is can you configure the port in this way binding? It is supported by VMware?

  VMware has come back to me (in fact the author of one of the kb/s I've referenced)

  http://KB.VMware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalID=2038869

  He confirmed that the terminology used in the KB is misleading and "broadcast domain", it actually means "subnet" so not layer 3 layer 2.

  This means that you can NOT have multiple subnets in a broadcast domain (VLAN) AND use the SW iSCSI port binding.

  BUT

  He told me (he is very familiar with the Dell MD3660i iSCSI kit), you don't have to have binding of ports to achieve several Multipathing and load balancing. If you have a requirement for several subnets of your iSCSI SAN provider then just create multiple vmks on different subnets, and DO NOT make the port binding. The fact that they are on different subnets will be enough to achieve the multiple paths

  It updates the KB to make this much clearer.

  I hope this helps someone

• A modem, routers towing, two subnets?

  Hello

  I hope it's an easy question for one of your technicians to answer.

  Here's the situation.

  The functional reason.
  There is only a single WAN connection for two subnets.
  A subnet is located in a client area where anyone can sit and use connections.

  The other is a subnet of the employee.

  I don't want customers to be able to access the LAN used, but it is also critical that employees are blocked by the LAN client.

  The basic requirements are:
  1. the two subnets can get on the web.
  2. a subnet is totally isolated from each other. There is a catch here. It's OK to subnet1 to see subnet 2, but it is not ok for the subnet 2 see subnet1.

  I can connect in series routers to achieve what I want?
  Router 1 can be connected to a modem WAN and benefit from an IP as 192.168.1.1 and DNS for 105 192.168.1.100 to 192.168.1. I'll call this subnet1. I want this subnet to allow connections from the IP 100 to 115 on the Web range.
  Router 1 would be a firewall for the WAN to the outside.

  Router 2 can be connected to a line on the Router 1 port and an address such as 192.168.1.106 and service addresses like 192.168.110 to 115. I'll call this subnet2
  Router 2 would be a firewall to subnet2.

  With a Setup like that I think it's easier to have some subnet2 be protected one that cannot be seen from subnet1.
  So, how to avoid that subnet 1 systems to subnet 2?
  ROUTER2 can be configured to allow only 110 to 115 IP addresses. This can be done with transmission of restrictions or the use of filtering IP addresses, or even filtering by MAc address.

  The other option that I think is to introduce a router before that both routers and then the routers can do their thing with each using a different address space and blocking others.
  So in this situation, I would
  -ROUTER1 with portion of the address 192.168.1.1 address 192.168.1.100 to 192.168.1.105
  -ROUTER2 with serving address 192.168.2.1 address 192.168.2.100 to 192.168.2.105
  With every router they would be configured to only accept connections to the LAN of the accepted range.

  These seem to be two possible solutions.
  I just try to set up the first option with two routers and am not having success.
  I can't get the first router to talk to the second router and so on the second router systems cannot go out on the web.
  For my test setup, I have a wired Linksys 4 port router which is ROUTER1. It has the address 192.168.1.1 and addresses between 192.168.1.100 to 192.168.1.105. This model has a DHCP tab, where I have enabled the DHCP server and specify starting address it of 192.168.1.100 and allow up to 6 connections.

  ROUTER2 is a wireless router with 4 wired ports. I have disabled the function of wireless router and am just working with wired ports. It is where it gets difficult. I have to give him a LAN address and either enable or disable the DHCP function. I gave an address 192.168.1.105 and allowed him to serve up 192./168.1.110 to 192.168.1.115.
  Under the parameter WAN I selected automatically obtain an IP address. I also tried specifying the ip address, but does not seem to work.
  Router 1 does not seem to see two router.

  So I began to believe that the second option is perhaps the easiest way.

  You can offer me advice as to which is the best way to solve this problem.

  Thank you.

  
  

• Separator for set two sets of headphones to the port single external microphone on iMac

  We want two people appear on the screen even when talking to anyone else on Skype. Is there a splitter available that would allow me to set the two sets of headphones to the port single external mic so that we can use the headset mic and get good sound quality?

  All divisor inexpensive listener should be able to do, for example that I found on Amazon:

  https://www.Amazon.com/Belkin-speaker-and-headphone-splitter/DP/B000067RC4/ref=s r_1_2? ie = UTF8 & qid = 1473882646 & sr = 8-2 & keywords = earpiece + separator

• vMotion (without shared storage) between two hosts with different vSwitches standard s VM

  I can VM vMotion (without shared storage) between two hosts with different vSwitches standard? The vSwitches on these two hosts have different names and number of NIC, but have the same name of portgroup.

  
  Thank you.

  Yes, you can in a Storage VMotion to one Esxi to another with no shared storage...

  It is important the portgroup bears the same name... This is the reference for the VM...

• I just bought two images, but there are so many link or anywhere for me to download the images. How can I download these?

  I just bought two images, but there are so many link or anywhere for me to download the images. How can I download these?

  Just follow these steps: I downloaded my 10 free images and they all have the Adobe watermark on them, so I can't use them. Why do they have a watermark on them?

• NFS/iSCSI ports vmkernel - different VLAN?

  I have a question, if you already have a vmkernel port defined for NFS (in vlanX), and if you want to set the iSCSI on the same physical network adapter vmkernel port/ports, then you would give this NIC iSCSI even vlan like NFS or vlanY for iSCSI?

  If you have found this device or any other answer useful please consider useful or correct buttons using attribute points

  I would create different VGA (and VLAN) for the types of traffic.  It's simple, and it will stand the test of time and changes in your iSCSI environment.  You can add network cards later, you can separate the iSCSI network in main switch.

  My situation is a little different to yours I have NFS coming through vPC on Nexus s 2148 (here 1000V) and traffic iSCSI in France via 3750 s (here 1000V).  The NFS traffic using vPC and iSCSI traffic uses MAC pinning and iSCSI MPIO.  Very different profiles.  A time ago I would have found myself in a situation similar to yours, and I took a simple approach to share the same VLAN I would be regret and detangle it right about now

  Andrew.

• VM to run when you are disconnected from groups of iSCSI ports

  Hi all

  Our Director, am stumbled upon an interesting phenomenon.  He did work on our network and the network disconnected from their SAN storage adapters.  First, then the other, then both, however he never lost connectivity ping to the VM guest.

  Is there some sort of hold down until the virtual machine is going to die when you are disconnected from the SAN?  The virtual machine will remain until the to do a disc right?

  We found it very interesting...

  Thank you
  Steven

  It's normal.

  Take a physical machine and pull all its readers.  It will continue to run and to respond to pings, because the kernel is in memory and do very well.

  It is a function of the operating system.

• MPIO - iscsi - ARE links/Ops / s

  Am I correct in saying get;

  iSCSI MPIO will not increase your IOPS / s for a given machine, unless your ethernet connection is saturated?

  MPIO does not increase performance per say, but give you a "big pipe" for several virtual machines on?

  My scavaging on the net I find there are TWO ways to enable MPIO for you.

  (1) Add second Teddy (physical nic), assign the nic to your switch. Create a second VMkernal, substitute blanace loading options and set an active nic by vmk. Add the two vmk to the iscsi HBA, enable repetition alternate on the management of the paths to the data store. Shows that I have two paths.

  or

  (2) add the second bear to switch, allow the two bears will use the unique vmk. storage system, create two targets that map to the same LUN. Shows two paths.

  Does it matter which way MPIO is configured as it shows several paths?

  Out of curiosity I configured esxi using the first way to configure MPIO, then created a second target with the same number of LUN on the storage. ESXi shows that I have 4 paths to storage. A path is a link right? so 4 paths would be unnecessary, at least that I had 4 links and very high demand?

  I read that it takes about 14 000 iops to saturate a gigabit link. Does this mean that since my storage system cannot achieve worldwide real scenerio MPIO is a waste of time?

  Thank you to everyone who takes the time to communicate with me!

  You are confused of serveral things in your argument.

  Let's first start IOPS / s. To make an e/s of the mechanical components are involved on a disk and the number of IOs can run a disc is therefore very limited.

  For this example lets assume that a disk can do 100 IOs (some less, some more do) and that you have 10 disks at hand. This means that your storage hardware can make 1000 IOPS / s. If you invest in a storage Bay real intelligence of implementing adding caching and controller you can get you more out of your drives as long your load is a good target for caching, but I don't know this option.

  How to tie up your storage space (FC, iSCSI,) at an ESX Server direct changes nothing on the number of the IOPS / s your disks can do a lot.

  However, it influences the bandwidth you can achieve.

  Suppose that your consumption of storage is a WIndows NTFS machine. NTFS uses a typical 4 K block size. That calculates to a maximum block size of 4 K x 1000 = 4 MB bandwidth. Which can easily be done on a 100 MB link and you will see this flow if your consumption is doing sequential i/o only.

  Now suppose that your ESX Server has a VMFS formatted with 1 MB (512 GB). While loading fully your 10 discs, you can reach 1 MB x 1000 = 10 GB.

  Again, this is possible if your VMFS was only sequential writing which he did not.

  When you run virtual machines VMs operating system will write to his type of typical files (i.e. 4 K on WIndows) and so the underlying VMFS will buffer a bit in its own cache and access discs in shuffle mode. Thus, you should expect a lot less bandwidth used. It many cases a single gigabit link will not be saturated.

  MPIO is a function which can reach:

  -Path redundancy

  -Additional bandwidth and IOPS / s in some cases

  If MPIO can also add to the number if IOPS / s depends on the type of controller you have on the side storage. If you have a single controller with ports different frontend IOPS gain / s should not be dramatic. With several controllers, indivdual caches and mutual paths to the disks that you can achieve additional IOPS if you get a good cache reference rate.

  How many different ways you can use with MPIO depends on what can make your storage space. What is a passive connection active? Reach you reduncancy but no INCREASE in the Ops / s or bandwidth. Only an active-active array will increase the bandwidth and, possibly, the number of IOPS / s you can achieve.

  With ESX4 you can use up to 8 channels, if it's something your taken storage array supported by parallel controller access.

• Question about the migration to a new vswitch NFS port group

  We currently have our group of NFS port on the vSwitch that has all our VLAN and I'd like to bring out a vSwitch isolated dedicated network cards that will handle only NFS communnication.

  I have two network cards additional that I configured on an another vSwitch.  My question is can I remove the port from a vSwitch group and add it to this new and expect it to work?  This unmount and mount the NFS volume for me?  It will be just a quick blip?  What is a larger company?  I ask because I'm trying to figure if I need power off all the virtual machines that are on NFS before moving the port group.

  Is there another method that I should follow to do what I'm doing?

  Thank you

  t

  You'll need plan a failure.  You will need to create a new portgroup vmkernel, since you can't really "moving" a portgroup.  In addition, since you must create a vmkernel portgroup, it cannot be on the same subnet as the existing vmkernel portgroup.  You can have two on the same subnet, no matter how vSwitch' are you have.  Also, I'm not 100% sure the NFS, when you go back, to be assigned a new ID and be recognized as a new data store and force you to re-register your vm.  It's pretty easy to do, but it may be necessary.

  -KjB

  VMware vExpert

• How VLANs ' IP subnet ing works with based port of VLAN (series N2000 and N3000)

  Hi all

  I have a small pile of x N3024 2 acting as my heart L3 with a lag of 2 x 10 g down to a stack of x N2048 5 acting as L2 switch for my PC workstations.

  Workstations are that all on the port assigned VLAN 10 (switchport access vlan 10). I have a bunch of developers who want to access without restrictions more or less to assign random IP addresses for their VM (Virtualbox and VMware) Workstation.  As you can imagine, I would like some control over this situation.  the powerconnect guide I described features of subnet IP VLAN but does not seem to enter in how it works and interacts with the port actually function vlan assignments.

  What I currently have is the VLAN 10 assigned to a segment that support the subnet 172.100.x.x which dates back to our base of L3 for routing to other segments. What I want to do is to configure the VLAN based on IP and then load the dev is to config their VM with another IP range, say 10.10.x.x.

  Theory here is, I set the L3 core with say 20 VLAN and an IP to register in L3 path between subnets and then configure the battery switch L2 workstation with IP - based VLAN to recognize 10.10.x.x and separate on VLAN 20.

  However, I think the simplified here question is if I have a nail up to 10 ports VLAN, will the than basic work IP subnet VLANS as I want only it? Or, I need to create a subnet IP VIRTUAL local area network for the two IP ranges? I have to remove the assignenment VLAN per port and are based entirely on the treatment of subnet IP VLAN?

  If there is a better RTFM on this topic you can tell me I would appreciate it

  Thank you!

  I ended up calling specialists... great Dell technical support here.

  In fact, the IP based VLAN works very close to what I want to achieve. Missing from the user guide is that the port needs to be in the mode. Ports using switch port mode and bound to a VLAN just didn't work... probably because the vlan IP based did not differ from the port binding. Dell support has suggested to use the trunk mode, but my answer is finished using the general mode; any traffic not referenced, PVID located my usual LAN vlan ID and acceptance of port traffic of new vlan based on IP. In this way, I'm able to have a physical host DHCP on the corporate LAN and a virtual machine on that host to bind to a different subnet which is then isolated in the new NAV based on IP.

• Turn on two HP Pavilion 500-319na DVI ports

  I just bought a HP Pavilion 500-319na which has been described as having 1 x HDMI, 2 x DVI video interfaces.

  The GeForce GT 705 nvidia graphics card has 1 x HDMI, 1 x DVI taken

  The motherboard has also 1 x taken DVI which was capped with a small piece of plastic with "do not remove" on the subject.

  After advice from PC World, I removed the plastic and tried the DVI socket mother who did not work.

  Is there a way of making the motherboard DVI to work in parallel with sockets of graphics cards.

  Finally, I would like to run two monitors from the DVI Sockets at the same time and have the HDMI enabled.

  This is my first Post ever anywhere so apologies if there is not enough information.

  See you soon

  RSPII

  Please provide the full brand and model, for both monitors information, you try to connect to your computer.

  Based on the specifications of your desktop HP Pavilion 500-319na, this model has a VGA port (analog only) integrated and an integrated port DVI - D (digital only) as shown below (please NOTE: embedded video is not available if a graphics card is installed);

  

  #4-VGA (analog only) # 5 - DVI - D (digital only)

  Please replace the plastic cover that you previously deleted. There is no way to activate the video ports built-in, although a discrete video card installed.

  NVIDIA GeForce GT 705
  DVI (dual-link) resolution: 2560 x 1600 x 32bpp at 60 Hz
  HDMI resolution: 1920 x 1080
  VGA (via dongle) analog resolution: 2048 x 1536 x 32bpp at 60 Hz
  Support of up to two displays at the same time.

  There are several ways to connect monitors to your computer, but you can use two ports on the NVIDIA GeForce GT 705. The discrete card supports DVI - D (and VGA via a dongle) and HDMI. HDMI signal is the same as DVI - D in this case.

  BETTER (recommended)

  Computer-> DVI - D cable-> monitor #1

  Computer-> HDMI to DVI - D cable-> Monitor #2

  GOOD

  Computer-> HDMI to DVI - D cable-> monitor #1

  Computer-> DVI-D/VGA dongle-> VGA cable-> Monitor #2

  If you have any other questions, feel free to ask.

  Please click the 'Thumbs Up' white LAURELS to show your appreciation

• Connection of two screens on the PA3508E-1PRP Port Replicator

  Hello

  Anyone know if you can connect two screens on the port replicator? and use it with the option "extend my desktop" in Windows?

  Thank you

  Concerning

  It seems that you're talking about the Toshiba Express Port Replikator for Portege M400.
  In my view, the Port Replikator Express supports simultaneous use RGB & DVI only if the portable computer system unit itself also supports the simultaneous use of RGB & DVI.