3Com 4200G 12-Port Configuration Manual page 210

196 C 25: ARP C
HAPTER
ARP Table
ONFIGURATION
Table 163 Description on the fields of an ARP packet (Continued)
Field
Hardware address of the receiver
IP address of the receiver
Table 164 Description on the values of the hardware type field
Type
1
2
3
4
5
6
7
In an Ethernet, the MAC addresses of two hosts must be available for the two hosts
to communicate with each other. Each host in an Ethernet maintains an IP
address-to-MAC address mapping table known as ARP mapping table, as illustrated
in Figure 60. An entry of an ARP mapping table contains the IP address and the MAC
address of a host recently communicating with the local host.
Figure 60 An ARP table
IF index Physical address
Entry 1
Entry 2
Entry 3
Entry 4
Entry 5
...
Entry n
Description
For an ARP request packet, this field is null.
For an ARP reply packet, this field carries the
hardware address of the receiver.
IP address of the receiver
Description
Ethernet
Experimental Ethernet
X.25
Proteon ProNET
Chaos
IEEE802.X
ARC network
IP address Type