
Configuring IP Services
2-8
Configuring a MAC Address for an Adjacent Host
An adjacent host is a device on a locally attached network. This device may or
may not be a router. You must configure a media access control (MAC) address for
each adjacent host that does not implement the Address Resolution Protocol
(ARP).
Also, if a local network does implement ARP, you may want to configure a MAC
address for an adjacent host to pre-empt the ARP process.
Selecting an Address Resolution Protocol
The IP router needs both a physical address and an IP address to transmit a
datagram. In situations where the router knows only the network host’s IP address,
the Address Resolution Protocol (ARP) enables the router to determine a network
host’s physical address by binding a 32-bit IP address to a 48-bit MAC address. A
router can use ARP across a single network only, and the network hardware must
support physical broadcasts.
Figure 2-3. ARP Example
For instructions on using Site Manager to configure a connection to an adjacent host, see
“Configuring a Path to an Adjacent Host” on page 2-68.
Host
B
Host
C
Host
A
Router
140.250.200.0
140.250.200.1
00 00 A2 00 00 01
140.250.200.2
00 00 A2 00 10 20
140.250.200.3
00 00 A2 00 10 30
140.250.200.4
00 00 A2 00 10 40
Comentários a estes Manuais