gtpc1m1aTransmission Control Protocol/Internet Protocol

TCP/IP Layers

Figure 11 shows the TCP/IP layers that reside in the TPF host and those that reside in the 3745 or 3746 IP router.

Figure 11. TCP/IP Layers


Figure 12 shows the TCP/IP layers that reside in the TPF host and those that reside in the 374x Internet Protocol (IP) routers and the Open Systems Adapter (OSA)-Express card.

Figure 12. TCP/IP Layers with OSA-Express Support


The following layers reside in the TPF system:

The following layers reside in the IP router:

The IP router performs standard IP routing. The IP routers have no knowledge of sockets. Instead, the routers just forward packets based on the destination IP address of the packet.