127
o
SubNet Mask—Select and enter the IP address mask.
o
Prefix Length—Select and enter the length of the IPv4 address prefix.
•
User Defined Default Gateway—Select User Defined and enter the default
gateway IP address.
•
Default Gateway—Displays the current default gateway status.
Note
—If the device is not configured with a default gateway, it cannot
communicate with other devices that are not in the same IP subnet.
3.
Click
Apply
. The IPv4 interface settings are written to the Running Configuration file.
ARP
The device maintains an ARP (Address Resolution Protocol) table for all known devices that reside
in the IP subnets directly connected to it. A directly-connected IP subnet is the subnet to which an
IPv4 interface of the device is connected. When the device is required to send/route a packet to a
local device, it searches the ARP table to obtain the MAC address of the device. The ARP table
contains dynamic addresses. The device creates dynamic addresses from the ARP packets it
receives. Dynamic addresses age out after a configured time.
To view the ARP tables:
1.
Click
Configuration > IP Interface > IPv4 > ARP
.
2.
Enter ARP Entry Aging Time (1-40000000)
Enter the number of seconds that dynamic addresses can remain in the ARP table. A
dynamic address ages out after the time it is in the table exceeds the ARP Entry Age Out
time. When a dynamic address ages out, it is deleted from the table, and only returns when
it is relearned.
3.
Click
Apply
. The ARP global settings are written to the Running Configuration file.