Configuring Arp - 3Com WX4400 Reference Manual

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HAPTER ONFIGURING

Configuring ARP

WX S P
YSTEM ARAMETERS
5 Click OK.
6 To change the interval at which an NTP server is polled, specify its value in
seconds (16 to 1024) in the Update Interval box. The default is 64
seconds.
The Address Resolution Protocol (ARP) table maps IP addresses to MAC
addresses. ARP is enabled by default on the WX and cannot be disabled.
An ARP entry is added to the table in one of the following ways:
Automatically by the WX. The WX adds a local entry for its own MAC
address and adds dynamic entries for addresses learned from traffic
received by the WX. When the WX receives an IP packet, the WX adds
the source MAC address and source IP address of a packet to the ARP
table.
By the system administrator. Using 3WXM, you can add permanent
entries to the ARP table. Permanent entries do not age out and remain
in the table even after the WX is rebooted.
In addition to adding permanent ARP entries, you can set the amount of
time unused dynamic entries remain in the table before they are removed.
1 In the Aging Time box, specify the amount of time a dynamic entry can
remain unused before the entry is removed from the ARP table.
The value range for the aging timeout is 0 to 1,000,000 seconds. The default
value is 1200 seconds. To disable aging, specify 0 as the aging timeout.
The local entry for the WX, static entries, and permanent entries in the
ARP table are not affected by the aging timeout.
2 Access the Create ARP Entry wizard:
a Select the Configuration tool bar option.
b In the Organizer panel, click the plus sign next to the WX switch.
c Click the plus sign next to System.
d Select IP Services.
e In the Task List panel, select ARP Entry.
3 In the MAC Address box, type the MAC address that the IP address is to
be mapped to.
4 In the IP Address box, type the IP address for the ARP entry.
5 Click Finish.