arp over-vpls enable

Function

The arp over-vpls enable command enables ARP proxy on a device of a VPLS network.

The undo arp over-vpls enable command disables ARP proxy on a device of a VPLS network.

By default, ARP proxy is disabled on a device of a VPLS network.

Only the S5720-HI, S5730-HI, S5731-H, S5731S-H, S5732-H, S6720-HI, S6730S-H, and S6730-H support this command.

arp over-vpls enable

undo arp over-vpls enable

None

System view

2: Configuration level

Usage Scenario

To prevent bogus ARP packets at the PW side from being broadcast to the AC side on a VPLS network, enable ARP proxy over VPLS on a PE.

ARP packets at the PW side are sent to the CPU for processing.

If the ARP packets are ARP Request packets and the destination IP addresses in the packets match DHCP snooping binding entries, the device constructs ARP Reply packets based on the DHCP snooping binding entries and sends them to the requester at the PW side.
If the ARP packets are not ARP Request packets or the destination IP addresses in the packets match no DHCP snooping binding entry, the device forwards these ARP packets to the destination.

Precautions

Before using this command, ensure that DHCP snooping is enabled using the dhcp snooping over-vpls enable command.

# Enable ARP proxy on a device of a VPLS network.

<HUAWEI> system-view
[HUAWEI] dhcp enable
[HUAWEI] dhcp snooping enable
[HUAWEI] dhcp snooping over-vpls enable
[HUAWEI] arp over-vpls enable