Measure the impact of the network stack / components in latency

Similar Questions

• Deliver the addition of new set of switches stacked as an extension to the network in another data center building

  Hello

  I was wondering if someone can help me, I am a humble sysadmin with no real network admin training.

  I have the following Setup to work in a rack in our data center.

  2 x Dell Sonicwall NSA2400
  2 x stacked switches Dell Powerconnect N5524

  A Sonicwall is connected to each switch (active-passive)

  Every Dell server has 2 x nics in servile failover mode, one of each network card connected to each switch

  This is done to allow a full redundancy for network, cable, switches and Firewall interface cards. It works well.

  The above mentioned rack is now full and we ordered a new rack that is in a different datacenter of construction on the same site. We decided to buy another set of stacked switches and _extend_ (no battery) these via optical SPF on the rack on the other.

  The idea is that we still have the switch fault tolerance but link to two grids through 10 GB. The new switches are 2 x Dell Powerconnect N2048 and have been implemented stacked with any connected devices.

  I have implemented SPF ports on both switches to be a junction ports and connected the two sets of switches, unfortunately our site went offline, our alert went ballistic and no servers could not talk to each other!

  Quickly, I unplugged the new switches and after a worrisome 10 alerts deleted seconds and the site is back online.

  I don't know why this has happened and reflected on the STP parameters that my googleing seem well. I don't know I'm missing something basic.

  I'll post a framework and a diagram in a follow-up post

  Which is no doubt tree covering the shot weight. It is a good idea to assign lower priority to the main switch. Generally, your root switch will be the one that plugs into the firewall. Definition of priority on the main switch to 4096, it will make the root switch. So as you work your way through different layers of the network, increase the priority. Access layer switches can be left by default.

  I would also check the physical connections for loops. In situations where you have multiple connections switch, make sure that these ports are configured in a SHIFT.

  Keep us informed.

• Windows could not automatically bind the Protocol IP on the network card stack.

  Hello

  I installed an Edimax EW-7718Un network adapter that does not connect to the internet. I installed the same device on my Windows Vista laptop and it works fine, this isn't a problem with the product or my BT Home Hub. I checked the Edimax website and this product is compatible with Windows 7, and I have the latest drivers for it. I did the following to try to resolve the problem:
  -I've already been on the adapter properties, and clicked on "update drivers", the system says that the network card is working properly and that the drivers are up to date. I also installed the latest drivers on the Edimax website but the issue is not resolved.

  When I solve the problem, he told me that "Windows could not automatically bind the IP protocol for the network card stack."

  Please note that the settings are correct as the TCP/IP and DNS are set on "automatically get an IPv6/4 address server / DNS automatically".

  Also of note is that in "Network connections" in the Control Panel, the device is listed as "Disabled", I click to activate it but it does nothing, the network connection is still disabled. When I click on "analyze what" the same message "Windows could not automatically bind the IP protocol stack to the adapter network." appears.

  I also have compeltely re-installed Windows 7 and use the system restore, neither worked.

  I hope you can solve this problem.
  Thank you
  Mickey

  Hi Mickey888,

  According to the information provided by the Edimax website this particular model supports up to Windows Vista only.

  http://www.Edimax.us/HTML/English/products/EW-7718Unspec.htm

  You can try to install the same in compatibility mode and see if that solves the problem. To run the troubleshoot compatibility utility follow the link below.

  Make older programs in this version of Windows

  http://Windows.Microsoft.com/en-us/Windows7/make-older-programs-run-in-this-version-of-Windows

  Hope this information is useful.

  Amrita M

  Microsoft Answers Support Engineer
  Visit our Microsoft answers feedback Forum and let us know what you think.

• Win7x64 with adapter DWA-160, "Windows could not automatically bind the IP protocol for the network card stack."

  As the title suggests, I am running Windows 7 family, 64 bit. This is a new installation, a few days ago and I have not installed anything on, or changed the settings.

  I installed a DWA-160 D-link Wireless adapter n with the current drivers, fix (before you ask to confirm, they come from Web site of D - link. I used initially the disk included in the box, however, this has generated the same question that I'll explain, so I uninstalled this software and has continued to use the Windows program to connect to the wireless network.

  I can connect to the network, of course; However, I get the message "Windows could not automatically bind the Protocol IP on the network card stack" when connecting each time.

  After searching for an answer, I tried to turn on the WLAN auto configuration service, however, it is enabled by default. If this isn't any help.

  Tried the netsh winsock / netsh int ip / netsh int ipv4 / netsh int ipv6 reset and restarted after each, no change, if this isn't any help.

  Made sure the problem wasn't with the wireless router, and it isn't because I can connect with my laptop.

  Tried to plug in the USB stick on another computer yet. I don't want to plug into my laptop just to test that possibility. So. Yes.

  I also don't know much about all the inner workings of one of these things, so it would be rad If everything was in one step by step. Thanks in advance.

  Try to run This Fix - It.

• Install the components of the network on vSphere host via API NSX virtualization

  I want to install the components of the network on vSphere host via API NSX virtualization, can anyone help me?

  Hello

  What SDK NSX are you referring?

  I can confirm, that the next REST call will work to prepare the cluster hosts.

  POSTER https://nsx-mgr-ip/api/2.0/nwfabric/configure

  field-c11

  You will receive the in the http response.

  The job status can be asked here:

  https://NSX-Mgr-IP/api/2.0/services/taskservice/job/

  field - c11-> MoRef of the cluster you want to prepare. I guess you know how to get the MoRef in a Cluster.

  Don't forget basic authentication and the Content-Type: application / xml header

  I hope this helps

  Fab

• My emptiness of my network places, but the networking seems fine

  So, I'm having a bit of a problem that seems to have an impact on all computers on my home network (XP pro x 64 SP2, XP Home SP2, XP Home SP3, XP Pro SP3). Everything worked fine for a year, or while I was at home and then all of a sudden, in recent days, this problem has hit. I can't connect directly to one of the shared folders on my network through my network places. There are more all shared folders showing up there. I try to search the network for shared folders manually by opening the entire network-> Microsoft Windows network (slower than normal here to find my task force, WORKING group)-> WORKING group. Once I try to open my workgroup, he waits a while and then I get the error: "the Working Group is not accessible. You might not have permission to use this network resource. Contact the administrator of this server to find out if you have access permissions. The list of servers of this working group is not currently available. ". Note that all of my PC of in this working group.
  Internet works fine on all computers, and I can access any shared drives I have been mapped (or enter the path network in Run and open it) and can ping other computers on the network, so I don't think that there is no problem with the network card, and it happens on different computers with different network cards 4 so it is hard to believe that everything has been corrupted somehow. The only thing I can think is that I have automatic updates turned on and maybe MS has released an update that caused this problem.

  Has anyone seen/heard something like that? Any ideas what could be the cause or how to fix this? Measures to try? This isn't a critical issue, as I said I can still access shared folders, just map them or something, it's just frustrating that something that used to work find just stopped, suddenly, with no good reason and everything I can think told still seems to be fine...

  Thanks in advance!

  Thanks for the reply.  I would in fact already found this page through previous research and tried some of the suggestions out there on several of my computers (no luck).  However, the problem is that this page is for lack of network connections and is not really my problem.  My network connections appears fine, it's just the shared network folders that do not appear in "my network places".  I can still access it directly (mapping the path to a file, or enter the path in 'Run'), but I don't have the ability to browse the network more.

  I just wanted to point that the issue seems to have resolved itself, on all computers.  No idea what caused it or what fixed it, but it's that everything works well again.  Thank you Jack for trying to help!

• Unable to connect to wireless internet; can only connect to the network, saying "Local only" or "limited connectivity".

  I have problems to connect to any wireless internet - home, library, coffee shops.  He used to work, began to get in trouble (i.e. could not connect sometimes to the diner, but works in the library) and now does not connect to internet AT ALL wireless.

  Only connects to the network saying "local only".  And I'm lucky even get that much.  Furthermore, I don't know if it's a router problem or what, but it does not even accept the password for my home network (my boyfriend has no problem on the internet with Windows 7 and the current router password).

  I use a HP G60 laptop (maybe?), I don't remember the model exactly.  Windows Vista.  I am frustrated beyond belief.  I took the computer to Best Buy and the man suggested that contact Microsoft because, in his own words, "this seems to be a very common problem with the adapter wireless in Windows Vista".

  In summary: is it a hardware or a software problem?  It seems to be a software problem that can have an impact on the material.  Nevertheless, what can I do to fix this?  Y at - it a software update, I need to try for my wireless card?

  This computer is not yet a year old, and already I am unable to use it for the internet.  Not very well I plug my ethernet cable router wireless in the library.  I bought a laptop for a reason, but it is on track to achieve more like a desktop.  Very disappointing.

  Someone, please help!

  I took the computer to Best Buy and the man suggested that contact Microsoft because, in his own words, "this seems to be a very common problem with the adapter wireless in Windows Vista".

  Is this a hardware or a software problem?  It seems to be a software problem that can have an impact on the material.  Nevertheless, what can I do to fix this?  Y at - it a software update, I need to try for my wireless card?

  Hello

  When the man from BestBuy, fortunately for us technology is not a cleaning product, there is no way of knowing if someone puts his hand on it and knowing what is wrong rather than moving oral reprimand...

  First step, log on to the HP support and download the latest drivers for your wireless card.

  The HPG60 is a very good phone but its wireless card has problems with old drivers.

  In which case it's a hardware problem, contact HP support.

  In general, you can use this process to find out what's wrong with the wireless.

  Most laptops have a physical switch for the wireless card. Read the manual of the computer and make sure that the wireless adapter is on.

  Check the Device Manager for the wireless card valid entry.

  http://www.ezlan.NET/Win7/net_dm.jpg

  If there is no valid entry, remove any entry from fake and re - install the drivers for the wireless card.

  Check network connections to make sure that you have a network icon/entry wireless connection, and that the properties of the icon (right-click on the icon) are correctly configured with the TCP/IPv4 protocol in the properties of network connections.

  http://www.ezlan.NET/Win7/net_connection_tcp.jpg

  Make sure that if there is Wireless Utility a utility vendor is not running with the native Windows wireless utility.

  Make sure you firewall No. preventing / blocks wireless components to join the network.

  Above everything is OK and it connects to the wireless router. Log in from any computer which is, or can be connected to the router with a wire wireless, disable wireless security, make sure that the wireless streaming is enabled and try to connect with no. wireless security.

  When the work turns on the Wireless security.

  Note * people sometimes make mistakes in writing and retype the password for security.

  Another way is to copy in the menu of the router and then paste it when asked of the wireless card.

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

  I really checked and configured every thing and it doesn't work.

  Software firewall application that is not configured to allow local traffic (between the computer and the router is also a possible problem.
  some 3rd party software firewall continue to block the same aspects it traffic Local, they are turned Off (disabled). If possible, configure the firewall correctly or completely uninstall to allow a clean flow of local network traffic. If the 3rd party software is uninstalled, or disables, make sure Windows native firewall is active .

  Jack-MVP Windows Networking. WWW.EZLAN.NET

• Windows Vista, the network latency got bad

  Yesterday, I changed the network router on my Windows Vista (edition Home premium) and this led me to run some of the internet speed test sites.  I see high network latency on the network speed available test sites.  The download speed is very good, but my network on my Windows Vista system latency time increased from 19 ms to about 500 ms.  It is quite a big change (X 25), so I'm a little worried about it.  I don't think that it is a router problem because I also have a Windows XP system that is connected to the router, and he still sees about 19 ms network latency.  Just to be sure, I changed the system of Windows Vista and Windows XP system router ports, and the latency of each system has not changed, so I don't think that it is a router problem.

  I think so the network on Window Vista system stack has been damaged in some way, and I'm looking for help to repair.  My first thought was the restoration of the system, but I can't go far enough to make it useful.  The only system restore point that I currently have (for some reason any) yesterday, and it shows the same 500 ms of latency of the network on the Windows Vista system.
  Can someone help me to troubleshoot or fix this problem?
  Thank you very much.
  -Roger

  Well, one of those moments of "Doh!" ... found another article on the internet, this time, it gives an idea for my system... I was using Chrome 3.0 as my browser when I ran network speed sites that gave me the time of high latency, with that I was worried.  I found that my time of network latency on Vista, as measured by Firefox 3.5.3 is about 19 million, and for IE8 is about 10 MS, which both are very good.  My conclusion therefore is that Chrome 3.0 marked the beginning of a new era of the network latency that is bad for me.  Or maybe it's Eset Nod32, antivirus, it does not matter (when I turned Nod32 which made no difference to the number of Chrome, well off)...

  I had no idea that Chrome 3.0 was this badly inconsistent with everything that he fights with on my computer Vista, but I don't need because I have a couple of other browsers which are very good.

  Interesting, even when...

  -Roger

• My end of 2010 has a problem with wifi: no other device on the network is

  Hello

  I have Cox 30 broadband down and 10 + up - connected with the new airport

  For some time my late 2010 MacBook Air worked really slowly on the network. My Pro iPad speed test of 25 + down and 10 + - while the macbook directly next to it not less than 10 years down and under 5 up

  Does anyone know if an update or something had an impact of Air?

  Thank you

  Graeme

  If you hold down the option key by clicking on the icon of your airport. You should get an option to run network diagnostics. You could also try removing the network of Macbook Air and add it again. If by chance you are using bluetooth, it could be a problem with switching in the router. The bluetooth works on 2.4 GHZ. Configuration of the router to run on 5 GHz could help. Or change the channels.

• Guest WiFi network much slower than normal on the network

  Speedtests leave a device attached to the 5 GHz wireless guest network are much slower than when the same device is connected to the normal 5 GHz WiFi.

  I measured reproducible all about 7ms 18/10 down on the network of comments and 1ms 320/250 Mbps on the normal network. Same place, same camera, same speedtest app, same test server.

  Similar results of multiple devices (laptop, Windows, iPhone 6 s). No change after a reboot. QoS is off. Firmware is 1.0.6.28_1.1.83.

  What could be the reason? I don't think that I had the same problems a few months ago, but I has not changed settings since then, except for the upgrade of the firmware when a new version appeared.

  Thanks for your advice.

  that version was pulled and pulling FW rarely happens... back having previously worked FW

• LasetJet Pro M475dn: Impossible to scan over the network after upgrade to El Capitan

  After that I upgraded to El Capitan I no longer use HP Scan or HP Easy Scan to scan the network more. I can print to the printer, but analysis always results in the page being pulled by the document feeder, but applications just to lock-up without the document showing. Everything worked fine on Yosemite.

  I found a workaround solution that once worked before after a update of Mac OS X (but had to change the name of file, much like the original file has disappeared). Just download the next file on HP (no matter that it is not for your printer; it's not mine either (OfficeJet Pro L7680) but it works).
  
  FTP://FTP.HP.com/pub//softlib/software12/COL51752/OJ-125213-3/HP-inkjet-SW-OSX-Mavericks_v12.34.37.dmg
  
  Disable SIP for this installation and when you run the installation program (do not know if you need to do, but I did anyway). To do this, the instructions are here:
  
  https://forums.developer.Apple.com/thread/3981
  
  When you run the Setup program, make sure you hold the CTRL key when you right-click on it, then click Open in the menu.
  
  Run the Setup program. Be sure to select the HP scanning software and install it. When you get to the configuration of the printer, just skip this step (unless you are using the printer in question). The parser components are what you really want from the printer drivers are already in El Capitan, if you have a HP supported printer. The scanning software will have already installed to the moment you arrive at this screen.
  
  Install the HP Easy Scan on the App Store app (if you get the latest version of the software your front-end). You should be able to run the scanner and scans without restart. I don't know if it will work for everyone, but certainly, it worked for me and keep me until they find what went wrong in El Capitan to disable scanning and scanning capabilities.
  
  SIP turn on again so that your Mac is better protected. We should all work after that. After doing the above, I found that I was able to not only use the HP software, I was able to use Image Capture, preview, etc, to get images from the scanner. Your mileage may vary, but if all goes well it will work again for you all.

• What is a source valid and display it for the installer of the network of NIVLM 2.0

  Hello

  I am trying to create a version of Labview, Labwindows CVI and the last Measurement Studio 8.0 installed network.  Now, when I started the network in the menu Setup options NI Volume License Manager 2.0, I select the Browse button select the CD Source and I select Browse to select the directory that contains the package created. By clicking on NEXT shows an error message saying: select a valid source and the how to Setup network.

  Can anyone tell what a directory source and how valid or where I can find answers to this problem?

  thnx in advance

  Ruud Habets

  
  

• Measure the intensity of the flash using a photodiode

  Hello world

  I want to measure the intensity of the flash of my flash lamp using a photodiode.

  Maximum repeat of the lamp flash rate is 500 Hz, the duration of the pulse ~ 2 µs.

  Right now I use a card counters/timers PCI-6602, so I have to buy new material (max $ 2000) in any case.

  The precision should be as high as possible because the signal is used to normalize the flash fluctuations in my measurement.

  I don't know what hardware meets my needs (USB-6009, NI PCIe-6351,...) because there are so many options.

  Any recommendations?

  Thank you!

  Johannes

  Johannes,

  Yes. Additional information has been very useful.

  1. you can consider a tube set, as opposed to a photodiode.  Who spends the majority of your budget here rather than on the acquisition daq hardware but can give you better optical performance. PMT can be very sensitive (responses of single photon), fast and low noise.

  2 and 3. For an area under the curve as, I would consider a high speed Integrator (OPAMP fast with return of capacitor).  The output is a voltage proportional to the area under the curve.  Because you must read at 500 Hz, a relatively slow and cheaper DAQ hardware could be used. You must also reset the Integrator after each reading.

  Consider the comparison between direct scanning of the curves in your image to the Integrator, I proposed:

  A digitizer to 10 MHz capture 3 or 4 samples non-zero on the closer peaks and probably no sample in the upper part of the pulse.  Thus, the calculated surface might have significant errors. Certainly greater than your target < 0.1%.="" faster="" digitizers="" with=""> = 12 bits of resolution (required for accuracy) are very expensive.

  Op amp Integrator costs ~ 10 US $.  The other required components that would increase slightly. Even if you were to buy a power supply and an enclosure for the Integrator, the cost could be< $200-300="" us.=""  the="" sampling="" rate="" of="" the="" a/d="" conversion="" is="" ~="" 500="" hz.=""  ="" even="" a="" usb-6008=""><$200 us)="" is="" fast="" enough,="" although="" its="" triggering="" and="" accuracy="" may="" not="" be="" good="" enough="" for="" your="" application.="" certainly="" there="" are="" several="" devices="" in="" the="">< $1000="" us="" range="" which="" are="" more="" than="">

  4. stay with the 6602 for measurements of frequency and generation of calendar. It works well, has an impressive track record and you already have it. Add the input device a adapted analog and you should be ready.

  I don't want to make this sound too simplistic, because it isn't. What you're trying to measure requires some effort and a few precautions to ensure that you get significant results.  For example the discharge that powers the lamp flash can produce powerful electrical transient signals.  These could be much larger than the photodiode/PMT outputs and they occur simultaneously.  Preventing transient corrupt measures may require a substantial amount of test and design.

  Lynn

• What is Akamai NetSession customer (users\**\appdata\local\akamai\netsession_win.exe and it's OK to grant access to the network?)

  My mobile provider sent a notice to update my BIOS software, I did.  During automatic reboot, I got a security alert Windows, informing them that Windows Firewall has blocked some features of Akamai NetSession Client on public and provate networks... Allow client to communicate over public and private networks Akamai NetSessin?

  Akamai don't come right out and say, but the reason that netsession is installed on your computer is to allow them to use your computer to 'upstream' content to other users.  By installing NetSession, you allow Akamai use your idle bandwidth to transfer files to other users of Akamai.

  Some of the statements of Detangling: http://www.akamai.com/html/solutions/client_design_principles.html

  "The information that Akamai capture are similar to a web server, and that the information is only used for troubleshooting and monitoring of network performance."  This means that NetSession sends continuously information on your computer to Akamai.

  They say that NetSession will use your computer when it is "inactive or use minimum network resources.".  This means that NetSession is constantly monitor your use of the network and transmit this information to Akamai.  And as bandwidth varies from second to second, this info should be sent upwards to Akamai a lot.  Wait a minute, didn't they say just they captured only the kind of info that capture web servers?  Web servers capture information about the use of bandwidth.  What other information Akamai capture?  I couldn't find details on their site.

  So if you install NetSession, you be to join a peer-to-peer network and allowing Akamai send files from your computer at the time as Akamai may use you your minimum bandwidth.

  I also have a problem of security on the files I get the NetSession.  It seems that it is not difficult to download a file using NetSession, change it to carry a load of viruses and then leave the computer idle and wait NetSession transmit the file infected others NetSession.  I hope that Akamai has taken measures to address this problem, but I can't find any information on it.

• Current file to use when it is disconnected from the network wireless/wired - shared network drive

  Hello

  We have a problem where we receive a "file in use" message when you are disconnected from the network. To reproduce the problem, what we do is:

  (1) connect to the wired network wireless disabled with

  (2) create a test document

  (3) to enter text and save on network share

  (4) remove the network cable

  (5) add additional text

  (6) reconnect the network cable

  (7) try to save the file to the network share

  At the beginning by clicking the X is the new message you want to save. Click Yes and the message arrives until the next time you hit the Hit of X no. and he loses the last change.

  From here we then go up to the network share, open the file and it comes up with "file in use. Open read-only. File is opened by us (Administrator account), and there is NO temporary file in the shared folder.

  Tried so far:

  -Run net config server/autodisconnect:-1 for trying to stop it disconnect the share

  -Checked pane, pane preview and off 'display the description of the pop-up window for folder and desktop items '.

  -Windows Update

  We try to reproduce on wired connection, because it is easier to reproduce that disconnects wireless. Seems to have an impact on several operating systems. Share folder is shared on a Windows 2008 R2 x 64 machine.

  Is this a known problem or is there something that we can configure to try to prevent the locking file after logging out? Ideally, we want the decline to go unnoticed and provide uninterrupted service to the user, unless they are trying to save during the fall.

  Thanks in advance for comments :)

  Hello

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

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

  See you soon.