Technical information

ADC Telecommunications, Inc.
310 C
HAPTER 12: CONFIGURING IP ROUTING
Configuring ARP Entries
ARP (Address Resolution Protocol) maps the MAC layer addressing with the
IP layer addressing on a physical network that allows multiple access (such as
for Ethernet).
Each host on an IP network has two addresses:
■ MAC address, identifies the host at layer 2 in the data link layer of the OSI
model.
■ IP address, identifies the host at layer 3 of the OSI model and indicates
the network to which it belongs.
To communicate with a host on an IP network, an interface must know the
MAC address and IP address of the target host. The interface can learn the
MAC address (or physical address) from the network address using ARP.
You cannot add ARP entries to CMTS interfaces because the SID information
is unknown. See section below, “Enable Simple Proxy ARP,” for further
information about CMTS interfaces.
Before You Begin
The ARP window displays the MAC-IP address mappings that the system
learns (dynamic addresses) and the manually added APR entries. To view the
current ARP entries, follow this procedure:
1. In the IP Routing window, click IP Configuration tab.
2. Click the IP Configuration sub tab.
3. Select the row that includes the interface on which you want to add an IP
source route.
4. Click the ARP tab. The ARP window appears.