Chapter 24 Multicast
GS1920v2 Series User’s Guide
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Multic a st
24.1 Multic a st O ve rvie w
This chapter shows you how to configure various multicast features.
Traditionally, IP packets are transmitted in one of either two ways - Unicast (1 sender to 1 recipient) or
Broadcast (1 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 - it is not used to carry user data. Refer to RFC 1112, RFC 2236 and RFC 3376 for
information on IGMP versions 1, 2 and 3 respectively.
24.1.1 Wha t Yo u C a n Do
• Use the
Multic a st Se tup
screen (
Section 24.2 on page 205
) to display the links to the configuration
screens where you can configure IPv4 or IPv6 multicast settings.
• Use the
IPv4 Multic a st Sta tus
screen (
Section 24.3 on page 205
) to view multicast group information.
• Use the
IG MP Sno o ping
screen (
Section 24.3.1 on page 206
) to enable IGMP snooping to forward
group multicast traffic only to ports that are members of that group.
• Use the
IPv6 Multic a st Sta tus
screen (
Section 24.4 on page 211
) to view multicast group information,
• Use the
MLD Sno o ping - pro xy
screen (
Section 24.4.1 on page 211
) to enable the upstream port to
report group changes to a connected multicast router and forward MLD messages to other upstream
ports.
• Use the
MVR
screens (
Section 24.5 on page 218
) to create multicast VLANs and select the receiver
port(s) and a source port for each multicast VLAN.
24.1.2 Wha t Yo u Ne e d to Kno w
Read on for concepts on Multicasting that can help you configure the screens in this chapter.
IP Multic a st Addre sse s
In IPv4, a multicast address allows a device to send packets to a specific group of hosts (multicast
group) in a different subnetwork. A multicast IP address represents a traffic receiving group, not
individual receiving devices. IP addresses in the Class D range (224.0.0.0 to 239.255.255.255) are used for
IP multicasting. Certain IP multicast numbers are reserved by IANA for special purposes (see the IANA
website for more information).
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Страница 19: ...19 PA RT I Use r s Guide...
Страница 43: ...43 PA RT II T e c hnic al Re fe re nc e...
Страница 124: ...Chapter 9 VLAN GS1920v2 Series User s Guide 124 Figure 97 Advanced Application VLAN Port Based VLAN Setup Port Isolation...
Страница 155: ...Chapter 13 Spanning Tree Protocol GS1920v2 Series User s Guide 155 Figure 118 MSTP and Legacy RSTP Network Example...
Страница 193: ...GS1920v2 Series User s Guide 193 Figure 140 Classifier Example...
Страница 224: ...Chapter 24 Multicast GS1920v2 Series User s Guide 224 Figure 162 MVR Group Configuration Example 2 EXAMPLE...
Страница 367: ...Chapter 40 Access Control GS1920v2 Series User s Guide 367 Figure 271 Example Lock Denoting a Secure Connection EXAMPLE...
Страница 388: ...Chapter 48 Configure Clone GS1920v2 Series User s Guide 388 Figure 284 Management Configure Clone...