ZyXEL Communications MGS3700-12C, Руководство пользователя

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Chapter 24 Multicast
MGS3700-12C User’s Guide
247
24.6 MVR Overview
Multicast VLAN Registration (MVR) is designed for applications (such as Media-on-
Demand (MoD)) that use multicast traffic across an Ethernet ring-based service
provider network.
MVR allows one single multicast VLAN to be shared among different subscriber
VLANs on the network. While isolated in different subscriber VLANs, connected
devices can subscribe to and unsubscribe from the multicast stream in the
multicast VLAN. This improves bandwidth utilization with reduced multicast traffic
in the subscriber VLANs and simplifies multicast group management.
MVR only responds to IGMP join and leave control messages from multicast
groups that are configured under MVR. Join and leave reports from other multicast
groups are managed by IGMP snooping.
The following figure shows a network example. The subscriber VLAN ( 1 , 2 and 3 )
information is hidden from the streaming media server, S . In addition, the
multicast VLAN information is only visible to the Switch and S .
Figure 115 MVR Network Example
Add Click Add to save the profile to the Switch’s run-time memory. The
Switch loses these changes if it is turned off or loses power, so use the
Save link on the top navigation panel to save your changes to the
non-volatile memory when you are done configuring.
Clear Click Clear to clear the fields to the factory defaults.
Profile Name This field displays the descriptive name of the profile.
Start Address This field displays the start of the multicast address range.
End Address This field displays the end of the multicast address range.
Delete To delete the profile(s) and all the accompanying rules, select the
profile(s) that you want to remove in the
Delete Profile column, then
click the Delete button.
To delete a rule(s) from a profile, select the rule(s) that you want to
remove in the
Delete Rule column, then click the Delete button.
Cancel Click Cancel to clear the Delete Profile / Delete Rule check boxes.
Table 69 Advanced Application > Multicast > Multicast Setting > IGMP Filtering
Profile (continued)
LABEL DESCRIPTION