RFC 3821 : "Fibre Channel Over TCP/IP (FCIP)"

FCIP_LEP = FCIP Link Endpoint

8.3.2. TCP Window Scale Option

   The TCP Window Scale option [8] allows TCP window sizes larger than
   16-bit limits to be advertised by the receiver.  It is necessary to
   allow data in long fat networks to fill the available pipe.  This
   also implies buffering on the TCP sender that matches the
   (bandwidth*delay) product of the TCP Connection.  An FCIP_LEP uses
   locally available mechanisms to set a window size that matches the
   available local buffer resources and the desired throughput.

Yo diría que lo deja en que cada uno se resuelva el problema. Vamos, que para no haberme mirado la RFC en mucho tiempo no he errado mucho el tiro ;-)