Chapter 44 Multicast; Multicast Overview; What You Can Do - Ipv4 Multicast; What You Can Do - Ipv6 Multicast - ZyXEL Communications XS3800-28 User Manual

44.1 Multicast Overview

This chapter shows you how to configure various multicast features.
Traditionally, IP packets are transmitted in one of either two ways
or Broadcast (one sender to everybody on the network). Multicast delivers IP packets to just a group of
hosts on the network.
IGMP (Internet Group Management Protocol) is a network-layer protocol used to establish membership
in a multicast group
information on IGMP versions 1, 2 and 3 respectively.
The Multicast Listener Discovery (MLD) protocol (defined in RFC 2710) is derived from IPv4's Internet
Group Management Protocol version 2 (IGMPv2). MLD uses ICMPv6 message types, rather than IGMP
message types. MLDv1 is similar to IGMPv2 and MLDv2 is similar to IGMPv3. MLD allows an IPv6 switch or
router to discover the presence of MLD listeners who wish to receive multicast packets and the IP
addresses of multicast groups the hosts want to join on its network.
MLD snooping and MLD proxy are analogous to IGMP snooping and IGMP proxy in IPv4. MLD filtering
controls which multicast groups a port can join.
44.1.1 What You Can Do – IPv4 Multicast
• Use the IPv4 Multicast Status screen
information.
• Use the IGMP Snooping screen
multicast traffic only to ports that are members of that group.
• Use the IGMP Snooping VLAN screen
• Use the IGMP Filtering Profile
clients connected to the Switch are able to join.
44.1.2 What You Can Do – IPv6 Multicast
• Use the IPv6 Multicast Status screen
information.
• Use the MLD Snooping-proxy screen
group changes to a connected multicast router and forward MLD messages to other upstream ports.
• Use the MLD Snooping-proxy VLAN screen
snooping-proxy settings on the VLANs you specified.

Chapter 44 Multicast

it is not used to carry user data. Refer to RFC 1112, RFC 2236 and RFC 3376 for
–
(Section 44.2 on page
(Section 44.3 on page
(Section 44.4 on page
(Section 44.5 on page
(Section 44.6 on page
(Section 44.7 on page
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C
H A P T E R
Multicast
Unicast (one sender to one recipient)
–
308) to view IPv4 multicast group
309) to enable IGMP snooping to forward group
313) to perform IGMP snooping on VLANs.
315) to specify a range of multicast groups that
317) to view IPv6 multicast group
318) to enable the upstream port to report
(Section 44.8 on page 318) to enable and configure MLD
44