11 FRAME CAN HAVE FOUR ADDRESSES

802.11 frame can have four addresses: the source address (SA), destination address (DA),

transmitter address (TA), and receiving address (RA). In this situation, the SA is the MAC

of the client sending the ARP request, the DA is broadcast (for the ARP), and the RA is the

AP. No TA is present in this example.

Figure 9-4 shows the ARP request.

Key TopicARPADDRESS 3ADDRESS 1ADDRESS 2FrameREQUESTFFFF.FFFF.FFFF000c.0001.0101