D-Link DES-3526DC Product Manual - Page 55
VLAN Name, Query Interval, Max Response Time, Robustness Variable, Last Member Query, Interval
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xStack DES-3500 Series Layer 2 Stackable Fast Ethernet Managed Switch User Manual VLAN Name Query Interval Max Response Time Robustness Variable Last Member Query Interval Host Timeout Route Timeout Leave Timer Querier State State This is the VLAN Name that, along with the VLAN ID, identifies the VLAN the user wishes to modify the IGMP Snooping Settings for. 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. 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. 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. This field specifies the maximum amount of time between group-specific query messages, including those sent in response to leave group messages. Default = 1. 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. This is the maximum amount of time in seconds a route is kept in the forwarding table without receiving a membership report. Default = 260. 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. Choose Enabled to enable transmitting IGMP Query packets or Disabled to disable. The default is Disabled. Select Enabled to implement IGMP Snooping. This field is Disabled by default. Click Apply to implement the new settings. Click the Show All IGMP Group Entries link to return to the Current IGMP Snooping Group Entries window. 41