D-Link DGS-3308TG User Manual page 175

8-port Gigabit Ethernet Switch User's Guide
Switch IGMP Snooping – This enables or disables IGMP snooping on the Switch.
Querier State – Select the version number of the IGMP to be used for the IP interface from the drop-down
list.
Query Interval – The time (in seconds) between the transmission of IGMP query packets.
Max Response – The maximum number of respondents to an IGMP query. Range is between 1 and 25.
Robustness Variable – This is a tuning variable to allow for sub-networks that are expected to lose a large
number of packets. A value between 2 and 255 can be entered, with larger values being specified for sub-
networks that are expected to lose larger numbers of packets.
Multicast Interface Configuration
The following window is used to configure a multicast interface (Layer 3 mode only).
Items on the screen above include:
Interface Name – The name of the IP interface (previously defined) on the Switch for which a multicast
interface is to be configured.
IP Address – The IP address (sometimes referred to as a network address) that corresponds to the interface
name above.
IGMP – Allows IGMP to be Enabled or Disabled for the IP interface.
Protocol – Allows the selection of the multicast routing protocol to be used with the above IP interface. The
options are: DVMRP – Distance Vector Multicast Routing Protocol, PIMDM – Protocol Independent Multicasting
Dense Mode, and INACT – the interface is inactive. For example, if DVMRP is chosen, then this routing protocol
will be used to forward multicast packets for the above IP interface.
IGMP Interface Configuration
The following window is used to configure Internet Group Management Protocol (IGMP) on the Switch (Layer 3 mode only).
Figure 7-28. Multicast Interface Configuration screen
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