3Com Switch 4800G 24-Port Configuration Manual page 784

784 C 54: ARP C
HAPTER ONFIGURATION
c
Configuring the
Maximum Number of
ARP Entries for a VLAN
Interface
Setting Aging Time for
Dynamic ARP Entries
Enabling the ARP Entry
Check
To do...
Configure a non-permanent
static ARP entry
CAUTION: The vlan-id argument must be the ID of an existing VLAN which
corresponds to the ARP entries. In addition, the Ethernet port following the
argument must belong to that VLAN. A VLAN interface must be created for the
VLAN.
Follow these steps to set the maximum number of dynamic ARP entries that a
VLAN interface can learn:
To do...
Enter system view
Enter VLAN interface view
Set the maximum number of
dynamic ARP entries that a VLAN
interface can learn
After dynamic ARP entries expire, the system will delete them from the ARP
mapping table. You can adjust the aging time for dynamic ARP entries according
to the actual network condition.
Follow these steps to set aging time for dynamic ARP entries:
To do...
Enter system view
Set aging time for dynamic
ARP entries
The ARP entry check can control the device to learn multicast MAC addresses.
With the ARP entry check enabled, the device cannot learn any ARP entry with a
multicast MAC address. Configuring such a static ARP entry is not allowed either;
otherwise, the system prompts error information.
After the ARP entry check is disabled, the device can learn the ARP entry with a
multicast MAC address, and you can also configure such a static ARP entry on the
device.
Follow these steps to enable the ARP entry check:
To do...
Enter system view
Enable the ARP entry check
Use the command...
arp static ip-address
mac-address
Use the command...
system-view
interface Vlan-interface
vlan-id
arp max-learning-num
number
Use the command...
system-view
arp timer aging aging-time
Use the command...
system-view
arp check enable
Remarks
Required
No non-permanent static ARP
entry is configured by default.
Remarks
-
-
Optional
8192 by default.
Remarks
-
Optional
20 minutes by default.
Remarks
-
Optional
Enabled by default.