Labview 2011 always disconnecting over wireless Ethernet bridge!

Hello, we recently upgraded from labview 2009 to labview 2011. We use a Labview cRio-9014 and FPGA backplane 9114. For connecting the cRio to our laptop we use Digi XPress Ethernet Bridge: Multipoint 900MHz industrial wireless part# XEB09. This program worked over our wireless link running labview 2009 with the old cRio software.
After upgrading the desktop, upgrading the cRio's software and recompiling the FPGA code we tested our setup via a wired ethernet connection and ran it all day with no problems. However once we switched to using our wireless ethernet bridges the cRio disconnects always 2-3 minutes after starting. It also does not allow us to reconnect without powercycling the cRio. The radio modems show a solid connect and no problems the whole time. Now I've searched through known issues and all over the forums without finding anyone having a similar issue so I hope someone can chime in and let me know if something else in LV2011 changed or what.
My current hypothesis is that labview 2011 uses UDP packets for status/keep-alive and our radio modems are not guaranteed to recieve all UDP packets. Please correct me since this is only a guess and I don't know what's going on under the hood on the cRio side.
P.S. I've captured the packet data using WireShark on the laptops side from deployment until disconnection but can't find any obvious problems. It's a fairly large file so let me know if it's needed and I'll try to find a way to upload it.
Hopefully someone can help.
Best Regards,
Sam Bingham
Great Lakes WATER Institute

Our host OS is WIn7-64Bit, and XP-32bit but they all display the same behavior.
cRIO hardware: cRio-9014 and FPGA backplane 9114
Our system is has 4 modules installed NI-9205, NI-9401, NI-9401, NI-9870, although we are only using the serial ports on NI-9870.
I looked for the NI TimeSync to remove but it isn't listed in our installation
Contents of current installation:
CompactRIO Support 4.0.0
DataSocket for LabVIEW Real-Time 4.9.0
HTTP Client 1.2.0
HTTP Client with SSL Support 1.2.0
I/O Variable Remote Configuration Web Service 1.0
LabVIEW 2011 Adaptive Filter Toolkit 11.0.0
LabVIEW PID and Fuzzy Logic Toolkit 11.0.0
LabVIEW Real-Time 11.0
Language Support for LabVIEW RT 1.0.0.4
NI Application Web Server 2.0
NI System Configuration 5.0.0
NI System Configuration Network Support 5.0.0
NI Web-based Configuration and Monitoring 2.0.0
NI-RIO 4.0.0
NI-Serial RT 3.8.0
NI-VISA 5.1
NI-VISA ENET Passport 5.1
NI-VISA ENET-ASRL Passport 5.1
NI-VISA Remote Passport 5.1
NI-VISA Server 5.1
NI-VISA USB Passport 5.1
Network Streams 1.1
Network Variable Engine 1.8.0
Remote Panel Server for LabVIEW RT 4.0.0
Run-Time Engine for Web Services 4.0.0
SSL Support for LabVIEW RT 4.0.0
System State Publisher 2.0.0
Variable Client Support for LabVIEW RT 1.8.0

Similar Messages

  • Dual RAP Mesh Network vs PTP Wireless Ethernet Bridging to provide link redundancy

    Currently looking at a few options to optimize a current point-to-point wireless LAN-to-LAN connectivity shot for a wired customer site for better redundancy (hardware diversity and/or logical path diversity). Currently the customer is fed via an older solution, using two Cisco 1522 APs with Cisco Aironet 14-dBi Path Antennas (AIR-ANT5114P-N) for a 5-GHz PTP wireless ethernet bridge (under 3km), in which one 1552AP hangs off a L3/L2 Distro switch and the customer's 1522AP hangs off a 3750X switch, which has another access switch hanging off it via a fiber run of about 2km, which is exposed in parts and can't be re-run again due some limitations.The customer doesn't utilize any wireless services. Due to their location, we can't connect them to our wired distro infrastructure directly via fiber.
    Looking at setting up two wireless shots (instead of just one currently used); 5-GHz point-to-point bridges using upgraded gear: Cisco 1552EU APs with Cisco Aironet 14-dBi Path Antennas (AIR-ANT5114P2M-N) or straight Exalt r5005 solution. The PTP shot will hang off two seperate distro switches for redundancy purposes, pointing toward the customer site at two seperate locations, spaced apart by approximately 1 to 1.5 km, so that they aren't at the mercy of being isolated on one side if they have another fiber cut which connects their two main access switches together. If need be, we can hang two main APs on one distro facing two APs at the customer site, since this would create some redundancy, just not the same level as above.
    The below is what I'm really unsure on.
    Possibly looking at setting up a mesh network using Cisco 1552E APs with 2.4 GHz Omni-directional antennas (either a 2.4/5GHz Terrawave MIMO Omnidirectional antenna or Cisco AIR-ANT2547V-N antennas, which ever is best) with two RAPs, one RAP hanging off one distro and the other RAP hanging off another distro for hardware diversity, both under the same bridge group name and both RAPs hanging off the same WLAN management SVI subnet on the distros. The customer site will have two 1552E MAPs located at two seperate sites, as pointed out above. I don't think a third AP would be needed, since they don't use wireless services. Since there would be only two RAPs, not three, would it be best two set-up this with both RAPs on the same channel to minimize convergence time should the mesh transfer from one RAP to the other RAP, as long as both RAPs are spaced apart under ???? distance to avoid interference/other issues? Looking at some documenation, it appears you can have a MESH network, as long as your MAPs and RAPs fall within a 2 mile range area, preferably closer to a 1 mile range area (for better bandwidth & reliability). This solution has been brought up as possible dual-homed solution in theory, by virtue of having two more more MESH APs fall within the range listed above, to the RAPs. From a layer 3 perspective, I'm not sure what the most optimal idea to run with in this scenario set-up would be. Possibly set-up two seperate user SVI VLANs (for their data services), one placed on each access switches these MAPs will hang off at the customer site, & using the same management SVI subnets as the RAPs for the wireless managment side (for accessing the APs). From my understanding, the user data SVI doesn't matter from the perspective of when the mesh transfers from one RAP to another, it should be transparent to them. The distro switches will just have the management SVIs placed on them for the RAPs, the user SVIs will be placed local on the access switches only. And all APs will hang off access ports set to the management VLAN ID.
    In my opinion, the PTP 5-GHz, dual distro homed solution makes the most since for wired client access, but since the latter option was brought up, it has to be weighed - plus I'm curious if it can work.

    The Exalt r5005 works great for redundancy PTP links. You have to use the sync cable between the two co-located bridges and also set the polarization on the bridges.  You can then use routing or spanning tree to decide traffic path.  With mesh, you will have to make sure you set the parent or else the maps will keep switching perhaps. 

  • Wireless Ethernet Bridge (WET54G) antenna

    I have a WET54G Wireless Ethernet Bridge antenna and am in need of an omni-directional indoor antenna with a magnetic base.  I've seen one from D-Link but cannot find a LinkSys antenna...do they make one or can someone point me in the the right direction here or will the D-Link antenna work with my bridge?
    Thanks in advance for the help!

    i cant figure out how to hook up my wireless labtop its an aspire1

  • Using Older Airport Express as an wireless/ethernet bridge

    Hi there,
    I noticed that people are using their Airport Express (n) products to create a bridge to wireless networks via the ethernet port on the Express.
    Is this possible for older non-N Airport Expresses?
    I read online that one could set up a WDS network, but I am having -no- luck doing that. Each time I try, I am prompted to enter other nodes on the WDS network, but there's a chicken and egg problem since the first node I am trying to set up keeps requiring other nodes before applying the changes to the configuration it is very frustrating.
    I have an Airport Extreme (b/g) and two airport expresses (b/g) and would very very much like to connect an ethernet-run skype phone to one of the expresses. I currently use one as an AirTunes node, and the other (the one I want to use for the skype ophone) as a wireless printer node. Is it possible to use the latter as an ethernet bridge? Can I do that without setting up a WDS network? If I have to have a WDS network, what are the step by step instructions I should follow to do that for all the hardware listed above?
    This seems a lot harder than it should be.

    +I noticed that people are using their Airport Express (n) products to create a bridge to wireless networks via the ethernet port on the Express.+
    +Is this possible for older non-N Airport Expresses?+
    It is only possible with the older Express if you also have an Apple main router and setup all the devices in a WDS arrangement. If you are having difficulty setting up the WDS on your network, reference pages 42-44 in the Designing AirPort Networks Guide for a step by step procedure of this. Or, perhaps you might want to use one of the excellent posts by Tesserax for this as well. See this post.

  • HT4259 Is it still possible to configure an AirPort Extreme as a Wireless/Ethernet bridge?

    Hi,
       I have a 4th generation 3TB Time Capsule as my primary wireless device.  I have tried configuring my 4th gen AirPort Extreme as a bridge (passive wireless to Ethernet bridge, not active wireless router) and despite two firmware resets, am unable to do so with either Airport Utility 6.1 or 5.6.1.  I am using a retina MacBook Pro with 10.8.2 to run the Airport Utility.  I know this used to work with earlier versions of the AirPort Extreme firmware (currently 7.6.1 for both devices) and earlier versions of the Airport Utility, because I have done it before and it has worked fine, although I haven't tried this for more than 3 years.  Is it still possible to do this, or am I missing something?

    If you are correct about not being able to configure the Extreme as a bridge then I guess I'm stuck with running the Extreme in extend mode.
    We only answer questions when we've tested it ourselves.  But, you can prove to yourself that the AirPort Extreme cannot act as a simple wireless to Ethernet bridge by trying to configure it to "join" a wireless network. You will see that the Ethernet ports are not enabled in this type of setup.
    Configuring the AirPort Extreme to "extend" a wireless network will enable the Ethernet ports. I'm sure that you understand that although the Extreme has Gigabit Ethernet ports, the "Ethernet" signal that appears at the LAN ports will only be as fast as the wireless connection to the AirPort Extreme allows.
    Perhaps surprisingly, the best that Cisco has to offer in terms of a wireless to Ethernet bridge is an 802.11b/g device with 100 Mbps Ethernet ports. Netgear does a bit better at least offering 802.11n capability, but still 100 Mbps ports.
    The AirPort adapter or a USB wireless adapter might be the simplest way to go if you are concerned about adding an additional wireless access point. Good luck.

  • Please Help - CISCO VPN client disconnecting over wireless adapter

    Hi,
    I connect to my work network when at home using the CISCO VPN client. I have a wireless connection at home. My vpn conection had no problem until my laptop once dropped hitting the wireless card reader side on the floor. since then, my vpn disconnects after some time. And this also disconnects my wireless connection at home. When I am not connected to work through th eVPN, we have no problems with my wireless connection. But, when I need to work from home, my vpn keeps getting disconnected and throws me off my wireless conenction too everytime. Can someone please tell me how to check if anything is wrong with the laptop? 

    Ok lets see if we can clear somethings up.
    Using wireless and VPN before the "Drop" was ok?
    Using Wireless and no VPN after the "Drop" is fine?
    Using Wireless and VPN after the "Drop" causes the wireless adapter to disconnect?
    If this is correct probally the best thing to do is to remove the cisco VPN software and reinstall it.
    It can't be anything to do with the "Drop" as using normal wireless is working fine you say.
    and the Cisco VPN Adapter is Virtual.
    Let me know how you get on.

  • Time Capsule as Wireless Ethernet Bridge

    <noob>
    So I picked up the Time Capsule to handle things with my MacBook. That means I now have a wireless N router (dLink DIR-655) kicking around. I want to try to use it to get wireless N to my Xbox in another room.
    Sadly, the dLink router doesn't seem to be able to bridge, so I've used it as my primary router (connected to my modem).
    How can I get my Time Capsule to hop on the existing wireless network, and then use the ethernet cable to connect the TC to my Xbox?
    MODEM--(wired)-->DIR655--(wireless n)-->TC--(wired)-->Xbox
    Note that I still need my PC (hard wired to the dLink router) and my MacBook (wireless to my dLink router) to see the TC for hard drive storage.
    Bonus points if you can figure out having the one dLink network serve only the TC, and having the TC broadcast a new network for the MacBook and my iPhone, while still serving the Xbox on a wired connection.
    </noob>

    Welcome to the discussions!
    I'm afraid we'll get no bonus points since products from different manufacturers are rarely compatible for bridging or extending a wireless network.
    While the Time Capsule could be configured to "join" the wireless network of your D-Link router and backups would occur over your current wireless network, when it is setup this way, all routing functions become disabled. This means that the ethernet ports are not enabled and the Time Capsule does not provide any additional wireless coverage.
    It's not possible to configure the the Time Capsule to "extend a wireless network" with your D-Link router since this function only works if you have another Apple "n" device setup as the main router on your network. (When the Time Capsule is configured to "extend", it provides additional wireless coverage and the ethernet ports are enabled.)
    If you want the Time Capsule's ethernet ports to be enabled and you want it to create a wireless network for more coverage, you'll need to connect the Time Capsule to your D-Link router using an ethernet cable. Or, if this is not possible, you might consider a pair of ethernet powerline adapters to accomplish the same task by utilizing the AC wiring in your home.

  • Wireless Ethernet Bridge?

    Can anyone tell me if the Airport Express is capable of acting like an Ethernet Wireless bridge to my Airport Extreme base station?
    Many Thanks
    G

    Well I have tried this but do NOT see how to configure the Airport Express to allow it to be used as a wireless bridge and provide connectivity via its Ethernet port. In fact there is a panel that comes up that says specifically that the Etherport port is disabled when the Express is used to connect to an existing wireless network - I interpret this to mean that in this mode it is intended for USB printing and AirTunes only.
    However my primary wireless network is NOT set up with an Airport Extreme base station, but rather the 802.11G Wireless Router that came with my DSL service.
    Does anyone have any ideas? Thanks, Peter

  • Always disconnects on Wireless...

    Hello
    I'm using a Lenovo Thinkpad T60 (Sep '07) and Vista SP1. The Adapter is a Intel PRO/Wireless 3945ABG and the WLAN Router is Zyxel ZyWall 2. NIC driver version is 11.5.0.36 from Lenovo Website.
    Since the beginning, the WLAN connection does interrupt very often. Also a reinstallation of the operating system didn't get a benefit... Other computers do not have the same issue, so the router shouldn't be the problem?! Does anyone has a solution for  this issue?
    Thanks in advanced!
    Miguel

    Make certain that the WiFi card can't be turned off to save power in the power management tab for the device.
    Regards,
    James
    Full disclosure, I don't work for Lenovo.
    James at Thinkpads dot com

  • Request: Provide Ethernet Bridging to NON-WDS Networks!!!

    I realize that the topic I am adding here has been discussed quite a few times and also that many comments were made on the issue at least as often. What I am trying to understand is this:
    Why did the initial design of the Airport Express turn off or not provide Ethernet bridging in client mode?
    My brother gave me the AE as a gift over a year ago and just recently I got a wireless router and dsl modem (in one unit) and was able to install the AE for the following usage (which I consider reasonable and 100% compliant to what was written on the box):
    - stream airtunes to the stereo in the living room (ok)
    - get my playstation2 online using the ethernet port (no way)
    Now that I have gone through hours of internet searching regarding WDS, I see that Apple has not intended the AE for this usage as it is only possible using Airport units. Don't get me wrong, but I am not going to go out and buy another base station in the form of any other Airport unit (especially after reading the other threads regarding their reliability!) just to get the funtionality of an Ethernet bridge.
    Bridging requires little to no additional intelligence in the unit other than mirroring the network traffic it is hearing on the wireless side. And that is obviously available since the WDS configuration offers that. I am aware of technical details (I built up the internals of a wireless ethernet bridge in a Hiperlan/2 network over three years ago at a research facility) and want to know why this is not done by default?? The AE is heating my living room as it is and I consider this a reasonable request for a new firmware edition - those who don't use ethernet bridging wouldn't notice a difference and the AE would finally fulfil what is promised on the box.
    Thanks for your time and perhaps persuasion in handling this issue - I hope my AE lasts long enough to experience this firmware edition if it ever gets out there.
    iMac (2000)   Mac OS X (10.2.x)   Also a PC from 2004 (XP)

    This is a user-to-user support forum.
    To provide feedback to Apple use the forms on this page.
    http://www.apple.com/feedback/

  • How LACP works over non-ethernet networks?

    Hi all. Everybody knows how works LACP between two switches.
    This is predictable wired links. But how it works in another, not clear ethernet networks? Supposing one link in LAG is over wireless transparent bridge. In this case values of packet delay, jitter and packet loss over one of the links differs from another.
    Instead wireless bridge there can be IP/MPLS or SDH network for example.
    How it works? Are there any tresholds for counters on links? Maybe any configurable parameters?

    The configuration of each router should be provided in the Apple Support article link I provided you.
    Basically you will not need to make any changes to the Motorola router just the AirPort Express.
    Roaming Network Setup Basics
    For the AirPort Express base station:
    Setup the base station as a bridge. Network tab > Router Mode: Off (Bridge Mode)
    Provide a unique Base Station Name.
    The Network Name (SSID) should be identical to that of the Motorola.
    If using security, use the same security type (WEP, WPA, etc.) and password. Note: It is highly recommended that you use WPA2 Personal for best bandwidth performance.
    The following are the basic setup steps:
    Power all the networking hardware down.
    Perform a "factory default" reset on the AirPort Express. Note: You may have to perform this more than once to make sure they "stick."
    Connect one Ethernet cable between the Ethernet port on the Motorola router to the Ethernet port on the Express.
    Power up just the Motorola router. Verify that you can get Internet connectivity with network clients either by wireless or by wire connections to the Motorola router.
    Power up the Express base station. Use the AirPort Utility to select it.
    Configure the Express with the Network Mode option set to: Create a wireless network. (Note: Do NOT set it to "Extend a wireless network."
    Set the Wireless Network Name, Wireless Security, & Wireless Password options to be exactly the same as that used for the Motorola.
    Set the Router Mode to: Off (Bridge Mode).
    Select Update and allow the Express to restart.
    Once restarted verify that you can roam with a wireless laptop or iOS device between base stations and still gain Internet access.

  • Connecting WAG320n to WRT610n using WET610n ethernet bridge

    I have upgraded my network with a WAG320n Router/modem and have a WET610n (ethernet bridge) in my remote room.  Because the WET is only one port, I would like to connect my old WRT610n router to the bridge, but need to know the right settings and connection info.  The purpose is to use the additional ports and wireless from the remote location.    
    Solved!
    Go to Solution.

    Problem solved and improved on
    Thanks Klatch,
    The WAG320n is nice, but not simultaneous dual band, so I set it for 5Ghz.  I hard wired an accesspoint (WAP610n) to the router, set it for 2.4Ghz, and placed it about 3 meters apart from the Router.  This gave me better access on the second floor for all devices with either bands.  (I gave the access point it's own SSID to distinguish it).
    To expand coverage to the first floor I installed the wireless N Ethernet Bridge (WET610N) on the fringe range of my routers output (still 4 bars).  The bridge is set to 5Ghz - because that's what the WAG320 is.  Then I connected the WRT610N router (which is simultaneous dual band) to the bridge.  You plug the bridge into a LAN port on the WRT610N, NOT the WAN port.  The WRT610 was programmed to 192.168.1.2, DHCP turned off, NAT disabled.  I have the other 3 WAN ports hard wired to devices (Playstation, Slingbox, Blue Ray Player).  All other first floor PC's are connected wirelessly via the 5GHZ or 2.4GHZ bands.  The first floor coverage is excellent.   I maintained different SSID's for each Router and the Access Point, to distinguish which router or band I want to connect to.
    If linksys only made the WAG320 simultaneous dual band, it would provide the extended coverage to all older and newer devices!!    The whole world isn't wrapped around 5Ghz yet!  So..  If you want to extend and use another router as a repeater (wirelessly) you need a wireless Ethernet Bridge (or gaming adaptor) from the primary router and connect it to the secondary router.   Anything can be done with a little effort.  Thanks

  • Ethernet Bridge and cat 5 cable to extend range?

    I am in a building with wi-fi on the upper level, but I'm in the basement.
    I have no means of extending the network "down" to me, but I'm trying to figure out a way for me to extend my range "up".
    Does anybody know if a Wireless Ethernet Bridge (like the Belkin 802.11g Wireless Ethernet Bridge F5D7330) and a 50 foot ethernet cable could be used to pick up the wi-fi.
    I'm thinking that I could possibly run the ethernet cable up the side of the building and place the wireless ethernet bridge on the roof, but I currently have no experience with a wireless bridge.
    Thanks,
    Luke

    If you are running an Ethernet cable why not connect the Ethernet cable directly to the internet on the upper level instead of trying to detect the wireless signal?
    Make sure that you use Ethernet cable which is rated for outdoor use and/or you place the cable in the proper conduit (pipe) to withstand the weather and meet any building codes.

  • Mini can't connect to the internet via ethernet bridge

    I installed a Netgear WGPS606 (It's a print server and wireless ethernet bridge) on my home wireless network. Here's the Configuration: DSL connected through a Linksys BEFSR41 DSL/Cable router with 4 port switch. My Graphite Airport base station connects to one of the ports on the switch, and it serves the wireless computers on the network. The WGPS606 is connected wirelessly to the Airport Base station. I have a MacMini connected to one of the ethernet ports on the WGPS606. The Mini successfully gets its IP address from the DHCP server on the Airport. (Interestingly, the Airport's DHCP server is configured to provide addresses for airport clients, not ethernet clients, but it does provide an IP address for the Mini -- I assume because the mini is connected through the wireless bridge.) I can see and connect to the Mini via the local network, but the Mac Mini cannot connect to the internet.
    Any clues?
    Mark

    Never mind. I gave up on the Netgear print server and bought a second AirPort Express and set up a WDS network. Everything works like a charm. That's the last time I waste nearly a day of my time to save $30 bucks on a piece of hardware.

  • Process Failure when communicating over MODBUS using LabVIEW 2011 and DSC

    I'm currently trying to read from a PLC's holding registers using MODBUS/TCP. I've confirmed that the PLC is updating the values and responding to MODBUS communication correctly using a third party program called Modbus Poll. However, when I try to poll the PLC using LabVIEW's shared variable engine, I am unable to read any values from the same addresses that I'm viewing with Modbus Poll.
    My setup simply consists of a PC connected directly to the PLC over Ethernet, with no router in between. I am using LabVIEW 2011 SP1 with the DSC module.
    I opened the NI Distributed Systems Manager to view the status of all shared variables in the Modbus library that I created and I've noticed that the CommFail bit is permanently set to "true". All other variables with a "read" access mode report "Process Failure". I've tried restarting the process as well as stopping and starting the local variable engine with no success. I've also restarted my computer several times to see if any services were failing, but this does not seem to have fixed the problem.
    I finally resorted to monitoring communications over the network card that I have the PLC plugged into via Ethernet using Wireshark and I've found that while Modbus Poll is communicating with the PLC, many MODBUS and TCP packets are sent and received. However, when solely using LabVIEW or the NI DSM to communicate with the PLC, there does not appear to be any communication over the network card.
    Something that may be worth noting is that I was able to communicate with the PLC and read values from it with the DSM on just one occasion, when I first figured out which addresses I should be reading from. It all stopped working shortly thereafter. Prior to this, "CommFail" was not usually set to "true" with my current configuration. Thinking that it was my firewall, I have since turned my firewall off, but this seems to have had no effect on the problem either.
    Any help on this matter would be appreciated.
    Solved!
    Go to Solution.

    Just a thought but I think the  register addresses used by LabVIEW are one off of the actual register #.  I was using a CRIO as a modbus IO Server and had to shift the register addresses by 1 to get things to work correctly (can;t recall if it was +1 or -1).  This is documented somewhere on ni.com but can;t seem to find it now.  But here is another  link that may help:
    http://zone.ni.com/reference/en-XX/help/371618E-01/lvmve/dsc_modbus_using/
    Dan

Maybe you are looking for