HP 1910 User Manual

287
Configuring MLD snooping
Overview
MLD snooping runs on a Layer 2 switch as an IPv6 multicast constraining mechanism to improve multicast
forwarding efficiency. It creates Layer 2 multicast forwarding entries from MLD messages that are
exchanged between the hosts and the router.
As shown in Figure 254,
when MLD snooping is not enabled, the Layer 2 switch floods IPv6 multicast
packets to all hosts. When MLD snooping is enabled, the Layer 2 switch forwards multicast packets of
known IPv6 multicast groups to only the receivers of the multicast groups.
Figure 254 IPv6 multicast forwarding before and after MLD snooping is enabled
Basic MLD snooping concepts
MLD snooping related ports
As shown in Figure 255, MLD snooping runs on Switch A and Switch B. Host A and Host C are receivers
in an IPv6 multicast group.

HP 1910 Specifications

General

Model	HP 1910
Category	Switch
Port Type	10/100/1000BASE-T
Layer	Layer 2
PoE Support	No
MAC Address Table Size	8K entries
VLAN Support	Yes
Management	Web-based GUI
Switching Capacity	56 Gbps
Forwarding Rate	41.7 Mpps
Jumbo Frame Support	Yes
Ports	24