Edge-Core ES3528MV2, Management Manual

Page: 1403 / 1480

C
HAPTER
45
| IP Interface Commands
IPv4 Interface
– 1403 –
arp timeout
This command sets the aging time for dynamic entries in the Address
Resolution Protocol (ARP) cache. Use the no form to restore the default
timeout.
S
YNTAX
arp timeout seconds
no arp timeout
seconds - The time a dynamic entry remains in the ARP cache.
(Range: 300-86400; 86400 seconds is one day)
D
EFAULT
S
ETTING
1200 seconds (20 minutes)
C
OMMAND
M
ODE
Global Configuration
C
OMMAND
U
SAGE
◆
When a ARP entry expires, it is deleted from the cache and an ARP
request packet is sent to re-establish the MAC address.
◆
The aging time determines how long dynamic entries remain in the
cache. If the timeout is too short, the switch may tie up resources by
repeating ARP requests for addresses recently flushed from the table.
E
XAMPLE
This example sets the ARP cache timeout for 15 minutes (i.e., 900
seconds).
Console(config)#arp timeout 900
Console(config)#
clear arp-cache
This command deletes all dynamic entries from the Address Resolution
Protocol (ARP) cache.
C
OMMAND
M
ODE
Privileged Exec
E
XAMPLE
This example clears all dynamic entries in the ARP cache.
Console#clear arp-cache
This operation will delete all the dynamic entries in ARP Cache.
Are you sure to continue this operation (y/n)?y
Console#