Configuring The Maximum Number Of Dynamic Arp Entries For An Interface; Setting The Age Timer For Dynamic Arp Entries - HP A7500 Series Configuration Manual

To do...
Configure
a static
ARP entry
CAUTION:
vlan-id
• The
Ethernet interface must belong to that VLAN. The VLAN interface of the VLAN must be created.
The IP address of the VLAN interface of the VLAN specified by the
•
same subnet as the IP address specified by the
Configuring the maximum number of dynamic ARP entries for
an interface
An interface can dynamically learn ARP entries, so it may hold too many ARP entries. To solve this
problem, you can set the maximum number of dynamic ARP entries that an interface can learn. When the
maximum number is reached, the interface stops learning ARP entries.
Follow these steps to set the maximum number of dynamic ARP entries that an interface can learn:
To do...
Enter system view
Enter Ethernet interface view
Set the maximum number of
dynamic ARP entries that the
interface can learn
NOTE:
When you set the maximum numbers of dynamic ARP entries that a Layer 2 interface and its VLAN
interface can learn, the smaller number takes effect.

Setting the age timer for dynamic ARP entries

Each dynamic ARP entry in the ARP table has a limited lifetime, called its age timer. The age timer of a
dynamic ARP entry is reset each time the dynamic ARP entry is used. Dynamic ARP entries that are not
used before their age timers expire are deleted from the ARP table. You can adjust the age timer for
dynamic ARP entries.
Use the command...
arp static ip-address mac-address
Configure a
vlan-id interface-type
long static
interface-number [ vpn-instance
ARP entry
vpn-instance-name ]
Configure a
arp static ip-address mac-address
short static
[ vpn-instance vpn-instance-name ]
ARP entry
argument must be the ID of an existing VLAN where the ARP entry resides. The specified
Use the command...
system-view
interface interface-type
interface-number
arp max-learning-num number
Remarks
Required
Use either command.
vlan-id
ip-address
argument.
Remarks
—
—
Optional
By default, a Layer 2 interface does not
limit the number of dynamic ARP entries.
A Layer 3 interface can learn up to
8192 dynamic ARP entries.
If the value of the number argument is set
to 0, the interface is disabled from
learning dynamic ARP entries.
4
argument must belong to the