Igmp Proxy - Eci Telecom B-FOCuS 270 Configuration Manual

B-FOCuS 270/285/400 PR Configuration Manual
5.6.

IGMP Proxy

The IGMP Proxy is used for transferring video and television channels over telephony
infrastructure. You can see a summary table of all the interface definitions as well as
the parameters of each interface separately.
The IGMP-Proxy is configured on WAN interfaces. The IGMP-Proxy-router is
configured on any available LAN interface. The IGMP-Proxy-Router periodically
sends a query over all of the interfaces that are configured as IGMP-Proxy-Router
interfaces. It does so in order to determine which groups have members on IGMP-
Proxy-Router interfaces.
The IGMP-Proxy-Router receives IGMP reports from IGMP hosts and maintains a
list of group membership for each IGMP-Proxy-Router interface. If the IGMP-Proxy-
Router finds a "new multicast group join," it will send an IGMP join report to the
Multicast Router over the IGMP-Proxy interface. When the IGMP-Proxy-Router
receives an IGMP leave report, it sends a group-specific query over the IGMP-Proxy-
Router interfaces. If it doesn't receive any response to that group-specific query, and
the WAN Multicast Router type is Version 2,then the IGMP-Proxy sends a leave
report to the WAN Multicast Router over the IGMP-Proxy interface.
After the IGMP-Proxy receives a general query from the WAN Multicast Router, the
IGMP-Proxy starts timers for all registered multicast groups. Once timers expire, it
will send a group-specific report to the WAN Multicast Router over the IGMP-Proxy
interface.
When the IGMP-Proxy receives the IGMP report for a specific group, the IGMP-
Proxy stops the timer for that specific group and doesn't send.an IGMP report for that
specific group to the WAN Multicast Router.
To add a new interface:
1. Click Add. The IGMP Proxy Configuration dialog box appears.
2. Define the proxy interface and the router interface and click Apply.
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