The display arp-limit command displays the maximum number of Address Resolution Protocol (ARP) entries that an interface can learn.
| Parameter | Description | Value |
|---|---|---|
| interface interface-type interface-number | Specifies the maximum number of the ARP entries that the interface can learn. | - |
| vlan vlan-id | Specifies the maximum number of ARP entries that interfaces in a VLAN can learn. | The value is an integer ranging from 1 to 4094. |
Usage Scenario
To identify whether the device fails to learn ARP entries is because the number of ARP entries that each interface learns has reached the upper limit, causing authorized users unable to get online, run the display arp-limit command to view the maximum number of ARP entries that each interface can learn and the number of ARP entries that each interface has learned.
Precautions
After you run the display arp-limit command, both the maximum number of ARP entries that an interface can learn and the number of ARP entries that the interface has learned are displayed for interfaces on the main control board, and only the maximum number of ARP entries that an interface can learn is displayed for interfaces on the interface boards.
# View information about ARP entry learning on the device.
<sysname> display arp-limit
interface LimitNum VlanID LearnedNum(Mainboard)
---------------------------------------------------------------------------
Eth-Trunk0 100 124 0
Eth-Trunk0 100 125 0
Total:2
Item |
Description |
|---|---|
interface |
Interface type |
LimitNum |
Maximum number of ARP entries that an interface can learn |
VlanID |
VLAN ID of an interface |
LearnedNum (Mainboard) |
Number of ARP entries that an interface on the main board has learned |