Specifications

6381-A4 Router Users Guide 85
3. Enter a check in the Enable IGMP Proxy check box
4. From the Interface Upstream/Downstream/Ignore dropdowns select the LAN groups to
and whether they should allow IGMP proxies from upstream or downstream.
To match the example above:
• DHCP1: Upstream
• PPPoE1: Ignore
• LAN group 1: Downstream
• LAN group 2: Ignore
5. Click Apply
The Apply button will temporarily save this connection. To make the change permanent,
click Tools (at the top of the page) and select System Commands. On the System
Commands page, click Save All.
Configure a LAN interface as the Upstream Interface
The following procedure applies when the multicast server in on the LAN side. Hosts on the
network can sent IGMP request from the WAN side through the LAN interface. And the LAN
interface, acting as the upstream interface, forwards data multicast from the LAN-side multicast
server to hosts on the network.
In the example shown above, there is a multicast router on the LAN side and LAN Group 1
interface is enabled as the upstream IGMP proxy. IGMP requests from the network are forwarded
to LAN group 1 and multicast frames from multicast router 1 are forwarded to hosts on the LAN
side (LAN group 3) and on the WAN side (DHCP1 and PPPoE1). No IGMP request nor data
multicast are forwarded to LAN Group 2.
To configure your LAN group 1 as the upstream interface:
1. From the navigation bar at the top of the screen click Advanced