Edge-Core ECS4810-12M Layer 2, Management Manual

Page: 1169 / 1236

C
HAPTER
45
| IP Interface Commands
IPv4 Interface
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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#
show arp
This command displays entries in the Address Resolution Protocol (ARP)
cache.
C
OMMAND
M
ODE
Normal Exec, Privileged Exec
C
OMMAND
U
SAGE
This command displays information about the ARP cache. The first line
shows the cache timeout. It also shows each cache entry, including the IP
address, MAC address, type (dynamic, other), and VLAN interface. Note
that entry type “other” indicates local addresses for this router.
E
XAMPLE
This example displays all entries in the ARP cache.
Console#show arp
ARP Cache Timeout: 1200 (seconds)
IP Address MAC Address Type Interface
--------------- ----------------- --------- -----------
10.1.0.0 FF-FF-FF-FF-FF-FF other VLAN1
10.1.0.254 00-00-AB-CD-00-00 other VLAN1
10.1.0.255 FF-FF-FF-FF-FF-FF other VLAN1