D-Link DGS-3324SR Product Manual - Page 70

xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual Parameter VLAN ID Description This is the VLAN ID that, along with the VLAN Name, identifies the VLAN for which to modify the IGMP Snooping Settings. VLAN Name This is the VLAN Name that, along with the VLAN ID, identifies the VLAN for which to modify the IGMP Snooping Settings. Query Interval The Query Interval field is used to set the time (in seconds) between transmitting IGMP queries. Entries between 1 and 65535 seconds are allowed. Default = 125. Max Response Time This determines the maximum amount of time in seconds allowed before sending an IGMP response report. The Max Response Time field allows an entry between 1 and 25 (seconds). Default = 10. Robustness Value Adjust this variable according to expected packet loss. If packet loss on the VLAN is expected to be high, the Robustness Variable should be increased to accommodate increased packet loss. This entry field allows an entry of 1 to 255. Default = 2. Last Member Query This field specifies the maximum amount of time between group-specific query Interval messages, including those sent in response to leave group messages. Default = 1. Host Timeout This is the maximum amount of time in seconds allowed for a host to continue membership in a multicast group without the Switch receiving a host membership report. Default = 260. Router Timeout This is the maximum amount of time in seconds a route is kept in the forwarding table without receiving a membership report. Default = 260. Leave Timer This specifies the maximum amount of time in seconds between the Switch receiving a leave group message from a host, and the Switch issuing a group membership query. If no response to the membership query is received before the Leave Timer expires, the (multicast) forwarding entry for that host is deleted. Querier State Choose Enabled to enable transmitting IGMP Query packets or Disabled to disable. The default is Disabled. Querier Router Behavior This read-only field describes the behavior of the router for sending query packets. Querier will denote that the router is sending out IGMP query packets. Non-Querier will denote that the router is not sending out IGMP query packets. This field will only read Querier when the Querier State and the State fields have been Enabled. State Select Enabled to implement IGMP Snooping. This field is Disabled by default. Fast Leave This parameter allows the user to enable the Fast Leave function. Enabled, this function will allow members of a multicast group to leave the group immediately (without the implementation of the Last Member Query Timer) when an IGMP Leave Report Packet is received by the Switch. The default is Disabled. Click Apply to implement the new settings. Click the Show All IGMP Snooping Entries link to return to the Current IGMP Snooping Group Entries window. NOTE: The Fast Leave function is intended for IGMPv2 users wishing to leave a multicast group and is best implemented on VLANs that have only one host connected to each port. When one host of a group of hosts uses the Fast Leave function, it may cause the inadvertent fast leave of other hosts of the group. 55