D-Link DES-3528 - xStack Switch - Stackable User Manual - page 106
xStack DES-3528 Series Layer 2 Stackable Fast Ethernet Managed Switch User Manual
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Query Interval
(1-65535)
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
(1 - 25 Sec)
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
Variable
(1 – 255)
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 Interval
(1 - 25 Sec)
This field specifies the maximum amount of time between group-specific query messages,
including those sent in response to leave group messages. Default = 1.
Host Timeout
(1 – 16711450)
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
(1 – 16711450)
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
(1 – 16711450)
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.
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.
State
Select Enabled to implement IGMP Snooping. This field is Disabled by default.
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.
IGMP Snooping Multicast VLAN Settings
To configure the IGMP Snooping Multicast VLAN settings, click L2 Features > IGMP Snooping > IGMP Snooping
Multicast VLAN Settings:
Figure 7- 27. IGMP Snooping Multicast VLAN Settings
The following fields can be set
Parameter Description
VLAN Name
This is the VLAN Name that, along with the VLAN ID, identifies the VLAN the user wishes to
modify the IGMP Snooping Settings for.