D-Link DES-3624 Product Manual - Page 63

IP Multicast Filtering Age-out Timer30-9999, IP Multicast Filtering IGMP Snooping, IEEE 802.1Q IGMP

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Stackable NWay Ethernet Switch User's Guide Figure 6-24. IGMP Configuration screen Items in the above window are defined as follows: ♦ IP Multicast Filtering Age-out Timer(30-9999) When this timer expires and the Switch has not observed (snooped) any IGMP query packets asking whether any stations belong to any Multicast groups, the Switch itself will send out queries and become the IGMP host on your network. ♦ IP Multicast Filtering (IGMP Snooping) This enables or disables the Switch to intelligently forward IGMP and Multicast packets instead of broadcasting (flooding) them on all ports. This setting also enables IGMP Snooping, which enables the Switch to read IGMP packets being forwarded through the Switch in order to obtain forwarding information from them (learn which ports contain Multicast members). The bottom of this screen contains a command for VLAN settings that leads to the IEEE 802.1Q IGMP Configuration menu. Highlight Configure 802.1Q IGMP and press to access this screen: Using the Console Interface 67

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Stackable NWay Ethernet Switch User’s Guide
Using the Console Interface
67
Figure 6-24.
IGMP Configuration screen
Items in the above window are defined as follows:
♦
IP Multicast Filtering Age-out Timer(30-9999)
When this timer expires and the Switch has not
observed (snooped) any IGMP query packets asking whether any stations belong to any Multicast groups,
the Switch itself will send out queries and become the IGMP host on your network.
♦
IP Multicast Filtering (IGMP Snooping)
This enables or disables the Switch to intelligently forward
IGMP and Multicast packets instead of broadcasting (flooding) them on all ports. This setting also enables
IGMP Snooping, which enables the Switch to read IGMP packets being forwarded through the Switch in
order to obtain forwarding information from them (learn which ports contain Multicast members).
The bottom of this screen contains a command for VLAN settings that leads to the
IEEE 802.1Q IGMP
Configuration
menu. Highlight
Configure 802.1Q IGMP
and press <Enter> to access this screen: