Multicast Snoop; Multicast Proxy - D-Link NetDefend DFL-210 User Manual

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4.6.3. IGMP Configuration

Figure 4.10. Multicast Snoop

Figure 4.11. Multicast Proxy

In Snoop mode, the router will act transparently between the hosts and another IGMP router. It will

not send any IGMP Queries. It will only forward queries and reports between the other router and

the hosts. In Proxy mode, the router will act as an IGMP router towards the clients and actively send

queries. Towards the upstream router, it will be acting as a normal host, subscribing to multicast

groups on behalf of its clients.

4.6.3.1. IGMP Rules Configuration - No Address Translation

This example describes the IGMP rules needed for configuring IGMP according to the No Address

Translation scenario described above. We want our router to act as a host towards the upstream

router and therefore we configure IGMP to run in proxy mode.

Chapter 4. Routing

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