WRN300N Intermittent Connection Loss - Wired

I’m running a Linksys WRT300N v1.1 router and am suffering from intermittent connection problems, both on my wired and wireless connected computers.  When this occurs, I can’t visit any web sites, and any online games I’m running completely freeze for about 20 seconds.  It happens on average once every 20 minutes or so.  I’ve tried following the directions on the site for this problem (http://linksys.custhelp.com/cgi-bin/linksys.cfg/php/enduser/std_adp.php?p_faqid=4031&lid=3948941746B...) but when I’m trying to get my MTU using the instructions provided I never get a fragmented packet.  I’ve started at 1472 and gone down by 10 all the way to 1000 and never got any fragmented packets.  If I go up any above 1472 I get fragmented packets, but that would put me at a 1500 MTU, which is the default. 
I know the problem is the router because we weren’t experiencing the problem until we changed the router, all other hardware remained the same.   I have a friend that had the same problem but was able to fix it using a firmware downgrade, but from what I can see, they've only released 1 version of the firmware for this router. 
Anybody have any ideas?

On routers setup page ....uncheck block WAN request .... click save settings ....
Change the wireless channel ....... radio band to 40MHz  .....Wide channel to 6 ...Standard Channel 11 ....
Click save settings ...
Also check the firmware version ....

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  • Connection loss SUM GUI to SL Controller

    Hi experts,
    I am experiencing an issue that I need to resolve. It is that I lose the connection from SUM GUI (locally) to the SL Controller running on the remote server.
    Currently I am doing an upgrade and after some time, e.g. when I have an error and don't notice it immediately, I get a warning message.
    "The connection to the SL Controller is down.
    The SDT GUI will reestablish the connection, when possible."
    On the server I get the following error message:
    May 26, 2014 7:49:47 AM [Error]: com.sap.sdt.engine.core.communication.FactoryAlreadyRegisteredException: Factory for key 'com.sap.sdt.engine.core.com
    munication.FactoryKey@13c2c5f4' is already registered.
    May 26, 2014 7:49:47 AM [Error]: com.sap.sdt.engine.core.communication.FactoryAlreadyRegisteredException: Factory for key 'com.sap.sdt.engine.core.com
    munication.FactoryKey@13c2c5f4' is already registered.
    May 26, 2014 7:49:47 AM [Error]: com.sap.sdt.server.core.ServerException
    May 26, 2014 7:49:51 AM [Warning]: Connection has been shutdown: javax.net.ssl.SSLException: java.net.SocketException: Broken pipe
    May 26, 2014 7:49:51 AM [Warning]: Error while closing connection.
    May 26, 2014 7:49:51 AM [Error]: com.sap.sdt.engine.core.communication.SendException: Error while sending data.
    Network input/output exception has occurred: Connection has been shutdown: javax.net.ssl.SSLException: java.net.SocketException: Broken pipe
    javax.net.ssl.SSLException: Connection has been shutdown: javax.net.ssl.SSLException: java.net.SocketException: Broken pipe
    javax.net.ssl.SSLException: Connection has been shutdown: javax.net.ssl.SSLException: java.net.SocketException: Broken pipe
    javax.net.ssl.SSLException: java.net.SocketException: Broken pipe
    java.net.SocketException: Broken pipe
    May 26, 2014 7:49:51 AM [Error]: com.sap.sdt.engine.core.communication.SendException: Error while sending data.
    Network input/output exception has occurred: Connection has been shutdown: javax.net.ssl.SSLException: java.net.SocketException: Broken pipe
    javax.net.ssl.SSLException: Connection has been shutdown: javax.net.ssl.SSLException: java.net.SocketException: Broken pipe
    javax.net.ssl.SSLException: Connection has been shutdown: javax.net.ssl.SSLException: java.net.SocketException: Broken pipe
    javax.net.ssl.SSLException: java.net.SocketException: Broken pipe
    java.net.SocketException: Broken pipe
    My current assumption is that the firewall drops the connection due to inactivity.
    The main issue then is:
    although I restart my local SUM GUI and reconnect to the server I can't continue the upgrade because the Buttons are "unclickable" (grey).
    Currently I always had to restart SUM including the services on ther server (SL controller).
    My question is:
    what can I do to avoid this connection loss?
    Is there a option to set a "keep alive" to the network connection?
    so that the firewall does not validate the connection as idle and drops?
    Unfortunately we can't do much about the firewall settings due to security restrictions.
    I would be glad to hear from you.
    Kind regards,
    Niklas

    Hi Mathias,
    I got an answer from SAP. There is no option that can be executed with STARTUP to solve this.
    I already proposed to forward this request to the dev team at SAP
    What I am currently doing is:
    Start the GUI and keep it open only if I know if there is are Actions coming next, otherwise I close it (only the GUI) and when some time has passed by I logon again to check.
    This is a really bad solution, but currently the only one.
    Regards,
    Niklas

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