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Chapter 23 Multicast
GS2200 Series User’s Guide
164
MVR Modes
You can set your Switch to operate in either dynamic or compatible mode.
In dynamic mode, the Switch sends IGMP leave and join reports to the other multicast devices
(such as multicast routers or servers) in the multicast VLAN. This allows the multicast devices to
update the multicast forwarding table to forward or not forward multicast traffic to the receiver
ports.
In compatible mode, the Switch does not send any IGMP reports. In this case, you must manually
configure the forwarding settings on the multicast devices in the multicast VLAN.
How MVR Works
The following figure shows a multicast television example where a subscriber device (such as a
computer) in VLAN 1 receives multicast traffic from the streaming media server, S, via the Switch.
Multiple subscriber devices can connect through a port configured as the receiver on the Switch.
When the subscriber selects a television channel, computer A sends an IGMP report to the Switch
to join the appropriate multicast group. If the IGMP report matches one of the configured MVR
multicast group addresses on the Switch, an entry is created in the forwarding table on the Switch.
This maps the subscriber VLAN to the list of forwarding destinations for the specified multicast
traffic.
When the subscriber changes the channel or turns off the computer, an IGMP leave message is sent
to the Switch to leave the multicast group. The Switch sends a query to VLAN 1 on the receiver port
(in this case, an uplink port on the Switch). If there is another subscriber device connected to this
port in the same subscriber VLAN, the receiving port will still be on the list of forwarding destination
for the multicast traffic. Otherwise, the Switch removes the receiver port from the forwarding table.
Figure 104
MVR Multicast Television Example
23.2 Multicast Status
Click Advanced Applications > Multicast to display the screen as shown. This screen shows the
multicast group information. See
for more information on multicasting.
Figure 105
Advanced Application > Multicast
Summary of Contents for GS2200 Series
Page 15: ...15 PART I User s Guide...
Page 16: ...16...
Page 31: ...31 PART II Technical Reference...
Page 32: ...32...
Page 76: ...Chapter 8 Basic Setting GS2200 Series User s Guide 76...
Page 92: ...Chapter 9 VLAN GS2200 Series User s Guide 92 Figure 60 Port Based VLAN Setup Port Isolation...
Page 230: ...Chapter 29 Error Disable GS2200 Series User s Guide 230...
Page 248: ...Chapter 33 ARP Learning GS2200 Series User s Guide 248...
Page 302: ...Appendix A Changing a Fuse GS2200 Series User s Guide 302...
Page 306: ...Appendix B Common Services GS2200 Series User s Guide 306...
Page 309: ...Appendix C Legal Information GS2200 Series User s Guide 309 ROHS...
Page 310: ...Appendix C Legal Information GS2200 Series User s Guide 310...