R2511-HP MSR Router Series Layer 3 - IP Services Configuration Guide(V5)

4
Step Command Remarks
2. Configure a static
ARP entry.
• Configure a long static ARP entry:
arp static ip-address mac-address vlan-id
interface-type interface-number [ vpn-instance
vpn-instance-name ]
• Configure a short static ARP entry:
arp static ip-address mac-address
[ vpn-instance vpn-instance-name ]
Use either command.
Configuring the maximum number of dynamic ARP
entries for an interface
An interface can dynamically learn ARP entries, so it might 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.
A Layer 2 interface can learn an ARP entry only when both its maximum number and the VLAN
interface's maximum number are not reached.
To set the maximum number of dynamic ARP entries that an interface can learn:
Step Command Remarks
1. Enter system view.
system-view N/A
2. Enter interface view.
interface interface-type
interface-number
N/A
3. Set the maximum number
of dynamic ARP entries
that the interface can
learn.
arp max-learning-num number
Optional.
By default, a Layer 2 interface does
not limit the number of dynamic ARP
entries. A Layer 3 interface can learn
a maximum of 1024 dynamic ARP
entries.
If the value for the number argument
is set to 0, the interface is disabled
from learning dynamic ARP entries.
Setting the aging timer for dynamic ARP entries
Each dynamic ARP entry in the ARP table has a limited lifetime, called aging timer. The aging timer of a
dynamic ARP entry is reset each time the dynamic ARP entry is updated. Dynamic ARP entries that are not
updated before their aging timers expire are deleted from the ARP table.
To set the aging timer for dynamic ARP entries:
Step Command Remarks
1. Enter system view.
system-view N/A