Operation Manual – ARP
H3C S3600 Series Ethernet Switches-Release 1510 Chapter 1 ARP Configuration
1-3
Note that this manual only introduces the basic implementation of the mapping table.
Different products of different manufactures may provide more information about the
mapping table. S3600 series Ethernet switches provide the display arp command to
display the information about ARP mapping entries.
Figure 1-2 shows the structure of
an ARP mapping table.
Entry n
…
Entry 5
Entry 4
Entry 3
Entry 2
Entry 1
IP aPhysical addressIF index
Typeddress
Figure 1-2 An ARP mapping table
Table 1-3 describes the APR mapping table fields.
Table 1-3 Description on the fields of an ARP table
Field Description
IF index
Index of the physical interface/port on the device owning
the physical address and IP address contained in the
entry
Physical address Physical address of the device, that is, the MAC address
IP address IP address of the device
Type
Entry type, which can be:
z 1: An entry falling out of the following three cases
z 2: Invalid entry
z 3: Dynamic entry
z 4: Static entry
1.1.4 ARP Implementation Procedure
The ARP mapping table of a host is empty when the host is just started up. And when a
dynamic ARP mapping entry is not in use for a specified period of time, it is removed
from the ARP mapping table so as to save the memory space and shorten the interval
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