Netgear GS724TS-100NAS User Manual download pdf (Page 118)

118 | Chapter 3: Configuring Switching Information

GS716Tv2 and GS724Tv3 Software Administration Manual

To configure IGMP snooping settings for VLANs:

1. To enable IGMP snooping on a VLAN, enter the VLAN ID in the appropriate field and

configure the IGMP Snooping values:

• Fast Leave Admin Mode. Enable or disable the IGMP Snooping Fast Leave Mode

for the specified VLAN ID. Enabling fast-leave allows the switch to immediately

remove the layer 2 LAN interface from its forwarding table entry upon receiving an

IGMP leave message for that multicast group without first sending out MAC-based

general queries to the interface.You should enable fast-leave admin mode only on

VLANs where only one host is connected to each layer 2 LAN port. This prevents the

inadvertent dropping of the other hosts that were connected to the same layer 2 LAN

port but were still interested in receiving multicast traffic directed to that group. Also,

fast-leave processing is supported only with IGMP version 2 hosts.

• Host Timeout. Sets the value for group membership interval of IGMP snooping for

the specified VLAN ID. The valid range is (Maximum Response Time + 1) to 3600

seconds.

• Maximum Response Time. Enter the amount of time in seconds that a switch will

wait after sending a query on the VLAN because it did not receive a report for a

particular group in that interface. value. The valid range is 1 to 25 seconds. Its value

must be less than the Host Timeout value.

• MRouter Timeout. Enter the amount of time that a switch will wait to receive a query

on the VLAN before removing it from the list of VLANs with multicast routers attached.

Enter a value between 0 and 3600 seconds. The default is 0 seconds, which means

there is no expiration.

• Query Mode. Enable or disable the IGMP Querier Mode for the specified VLAN ID.

• Query Interval. Enter the value for IGMP Query Interval for the specified VLAN ID.

The valid range is 1–1800 seconds. The default is 60 seconds.

2. Click Cancel to cancel the configuration on the screen and reset the data on the screen to

the latest value of the switch.

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Netgear GS724TS-100NAS User Manual Page 118