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

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   Message 14,021 of 14,669   
   Barry Margolin to Jorgen Grahn   
   Re: icmp echo to a host with smaller mtu   
   12 Jun 13 10:08:26   
   
   From: barmar@alum.mit.edu   
      
   In article ,   
    Jorgen Grahn  wrote:   
      
   > On Wed, 2013-06-12, rahul.dev.agg@gmail.com wrote:   
   > > Guys,   
   > >   
   > > I have two linux machines (A and B) connected to same link   
   > > (ethernet). The MTU supported is 1500.   
   >   
   > > If I change the mtu to 1280 of one the host (say B), then can I send   
   >   
   > My take on this is: you cannot really change the MTU on an interface   
   > -- you can only tell the interface the actual MTU on the link.   
   > If you lie to it, anything can happen.  Or, rather, I assume anything   
   > can happen.   
      
   I'd expect B to receive the packet successfully, but it might not be   
   able to reply because the reply doesn't fit in the MTU.   
      
   --   
   Barry Margolin   
   Arlington, MA   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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