ARP Table

You can query ARP entries in the ARP table.

Context

If two devices on an Ethernet network need to communicate with each other, they must know MAC addresses of each other. Each device maintains a table of mappings from IP addresses to MAC addresses, that is, an ARP table.
The ARP table of a switch contains static and dynamic ARP entries. Static ARP entries are maintained manually, and dynamic ARP entries age based on the aging timer.

Procedure

Query the ARP table.

Choose Service Management > ARP > ARP Table in the navigation tree to open the ARP Table page.

Table 1 describes the parameters on the ARP Table page.

**Table 1** ARP Table
Parameter	Description
ARP type	Indicates the type of ARP entries. You can search for static entries, dynamic entries, or static+dynamic entries.
Destination IP	Indicates the destination IP address in an ARP entry, for example, 10.10.10.1.
Mask	Indicates the mask of the destination IP address, for example, 24(255.255.255.0). You can specify the destination IP address and mask to search for ARP entries of a network segment.
Destination MAC	Indicates the destination MAC address in an ARP entry, for example, 0022-0022-0022.
VLAN ID	Indicates the VLAN ID in an ARP entry.
Interface name	Indicates the interface in an ARP entry. First select an interface type from the drop-down list box. Then enter the interface number in the text box, for example, 1/0/1. To specify an Eth-Trunk, enter the interface name in the text box, for example, 12. NOTE: After the stacking function is enabled on the switches, enter the interface number in the format of 1/1/0/1 (CSS ID/slot ID/subcard ID/interface number).

Set the search criteria.
Click Query. The search results are displayed.

Delete all dynamic entries.
You can click Reset Dynamic Entries to delete all dynamic ARP entries.
1. Choose Service Management > ARP > ARP Table in the navigation tree to open the ARP Table page.
2. Click Reset Dynamic Entries. The system asks you whether to delete all dynamic entries.
3. Click OK.
  NOTE:
  You can click Refresh to display new ARP entries after deleting the original dynamic entries.

Parent topic: ARP

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