On Wednesday, 08/20/2008 at 03:43 EDT, "Martin, Terry R. (CMS/CTR) (CTR)" <[EMAIL PROTECTED]> wrote: > If I am using HiperSockets and my MTU size is 1500 and a pass a packet size of > 2000 will the data in the packet be truncated since it is bigger than 1500? I > thought I read that since HiperSockets is memory transfers that the MTU can not > be split like it would over a normal transmission pipe, meaning that for a 3K > packet size over a MTU 1500 link would not be split into 2 transmissions. Am I > correct in the assumption?
Yes and no. :-) It won't be truncated, but it will be fragmented. The MTU is the Guardian of the Gate. It prevents the IP layer from sending a packet too large for the underlying interface to handle. So a 3K packet over an MTU 1500 link will result in two fragments, each 1500 bytes. Alan Altmark z/VM Development IBM Endicott
