FIGURE 12.1 Current and Projected Global Internet Bandwidth.

FIGURE 12.2 Protocol Layering as Embodied by the Internet Hourglass.

FIGURE 12.3 IPv4 and IPv6 Packet Header Formats.

FIGURE 12.4 UDP (Top) and TCP (Bottom) Header Formats.

FIGURE 12.5 Encapsulation and the Four-Layer Internet Model.

FIGURE 12.6 Example of a Switched Ethernet LAN.

FIGURE 12.7 Ethernet 802.3 Frame Format.

FIGURE 12.8 Block Diagram of the Intel® 82546-GB Dual Port Gigabit Ethernet Controller.

FIGURE 12.9 IEEE 802.11 Data Frame Format.

FIGURE 12.10 Intel Centrino Ultimate-N 6300 in a PCIe Half Mini Form Factor.

FIGURE 12.11 Bluetooth Protocol Stack.

FIGURE 12. 12 Bluetooth Frame Format FIGURE 12.12 Bluetooth Frame Format. The Header is Repeated Three Times.

FIGURE 12.13 Conceptual View of the Linux Network Stack.

FIGURE 12.14 Organization of the Internet Protocol Array.

FIGURE 12.15 Organization of the struct sk_buff.