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   comp.protocols.tcp-ip      TCP and IP network protocols.      14,669 messages   

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   Message 13,612 of 14,669   
   Mark Hobley to All   
   MTU size for a 3g mobile broadband dongl   
   27 Sep 10 14:42:23   
   
   XPost: comp.os.linux.networking   
   From: markhobley@yahoo.donottypethisbit.co   
      
   My LAN is ethernet based. However, for connectivity to the internet, I have   
   an Edimax 3g-6200n router, which connects to the internet via a 3g mobile   
   broadband stick.   
      
   Can a 3g mobile broadband stick route the 1500 byte packets arriving from   
   the LAN without fragmentation, or should I reduce the size of the MTU for   
   outbound traffic? If so, what should I reduce it to? (My internet service   
   provider is Three Mobile, if that matters.)   
      
   My next question is ...   
      
   Will Linux allow me to configure two MTU sizes on a single network interface,   
   depending on whether or not the destination address is local or remote?   
      
   If I need to reduce the MTU for outbound traffic, can I keep using a 1500   
   byte MTU for LAN traffic?   
      
   (The computers have only one ethernet connection onto a single subnet. There   
   is a single ethernet based router (Netgear) before the Edimax unit, which   
   forwards internet bound traffic via the Edimax unit).   
      
   Mark.   
      
   --   
   Mark Hobley   
   Linux User: #370818  http://markhobley.yi.org/   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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