HP VPN Firewall Appliances Network Management Configuration Guide

330

Forwarding a unicast IP packet with multicast

MAC address

Overview

A packet with a unicast destination IP but a multicast or broadcast destination MAC is typically for load

balancing on the server. If the device forwards such a packet in a VRRP network, a loop might occur at

Layer 3. To avoid service malfunction caused by the network loop, the device drops such a packet by

default. To forward such a packet, use a command and make sure no loops occur.

Configuration procedure

Ste

Command

Remarks

1. Enter system view.

system-view N/A

2. Enable forwarding a packet

with a unicast destination IP but

a multicast or broadcast

destination MAC at Layer 3.

ip forwarding ethernet multicast

enable

By default, the device drops

such a packet.