(Packet) Format

• Describes what each type of packet looks like

• Tells the sender what to put in the packet

• Tells recipient how to parse the inbound packet

->     ..............................
p      . Dest Add .. SrcAdd .. Type .
a      ..............................
c      . Title                      .
k      ..............................
e      . Description                .
t      .                            .
       .                            .
S      .                            .
i      .                            .
z      .                            .
e      .                            .
->     ..............................