Consider a Class-C subnet with IP addresses 44.136.7.xxx. The machine using the IP address 44.136.7.129 wishes to start a TCP connection with the machine using the IP address 44.136.7.130.
As the DUAL Link services a Class-C subnet, Link address of the type AD_1IP can be used. These uniquely identify each station on the link, and thus no ARP/RARP protocol need be used.
44.136.7.129 commences the connection by transmitting a SYN packet
to 44.136.7.130
:
Figure : Example Station Identification Packet
Having received this, 44.136.7.130 forms an ACK packet, which is sent back by DUAL:
Figure : Example Station Identification Packet
The conversation continues on as per the usual TCP/IP method.