Chapter 10 Interfaces
ZyWALL/USG Series User’s Guide
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Set the priority used to identify the DR or BDR if one does not exist.
IGMP Proxy
Internet Group Management Protocol (IGMP) proxy is used for multicast routing. IGMP proxy enables the
ZyWALL/USG to issue IGMP host messages on behalf of hosts that the ZyWALL/USG discovered on its IGMP-
enabled interfaces. The ZyWALL/USG acts as a proxy for its hosts. Refer to the following figure.
• DS: Downstream traffic
• US: Upstream traffic
•R: Router
• MS: Multicast Server
• Enable IGMP Upstream (US) on the ZyWALL/USG interface that connects to a router (R) running
IGMP that is closer to the multicast server (MS).
• Enable IGMP Downstream on the ZyWALL/USG interface which connects to the multicast hosts.
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