Loading ...
Loading ...
Loading ...
DGS-1520 Series Gigabit Ethernet Smart Managed Switch Web UI Reference Guide
278
The fields that can be configured are described below:
Parameter Description
Version
Select the IGMP version number here. The range is from 1 to 3. By default, this
value is 3.
Select the Default option to use the default version.
State
Select to enable or disable the IGMP state on this interface here.
Query Interval
Enter the query interval value here. The range is from 1 to 31744 seconds. The
IGMP querier sends IGMP query messages at the interval specified here to
discover the receivers attached to the interface interested in joining the multicast
group. Hosts respond to the query with IGMP report messages to indicate the
multicast group they are interested in joining.
Select the Default option to use the default value.
Query Max Reponses Time
Enter the maximum query response time value here. The range is from 1 to 25
seconds. This configures the period of time, which the group member can respond
to an IGMP query message before the router removes the membership. The group
membership lifetime is equal to the query interval times the robustness plus the
maximum response time.
Select the Default option to use the default value.
Robustness Variable
Enter the robustness variable value here. The range is from 1 to 7. The robustness
variable provides fine-tuning to allow for expected packet loss on an interface.
Select the Default option to use the default value.
Last Member Query Interval
Enter the Last Member Query Interval value here. The range is from 1 to 25
seconds. When the router receives a leave message from a receiver to leave a
group or a channel, the router will send the Group Specific Query or Group-Source
Specific Query message to the receiver interface. The IGMP Last Member Query
Interval will be advertised in the query message and conveyed to the receiver. This
configures the period that the router will send the next group-specific query or
group-source specific query message if there is no report from receiver for the
specific group or specific channel. The router will retry for the last member query
count. If no report messages are received after the retry count, the interface will
remove the membership from the specific group or specific channel.
Select the Default option to use the default value.
Subscriber Source IP
Check
Select to enable or disable the subscriber source IP check feature here. By default,
the IGMP report or leave messages received by the interface will be checked to
determine whether its source IP is in the same network as the interface. If they are
not in the same network, the message information won't be learned by the IGMP
protocol.
Click the Back button to return to the previous window.
Click the Apply button to accept the changes made.
Loading ...
Loading ...
Loading ...