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Configuration | Routing | IGMP
This page permits use of Internet Group Management Protocol (IGMP) with configured multicast
routes.
IGMP, when enabled, responds to IGMP queries for the configured multicast routes on the
transmit side and generates IGMP queries on the receive side. If there are no active IGMP
receivers on the LAN, it will stop forwarding the multicast traffic (received from the satellite) to the
LAN.
IGMP Multicast Router
•
Version: Use the drop-down list to select IGMPv1, IGMPv2, or IGMPv3.
•
Last Member Query Interval: This is the maximum response time inserted into group-
specific queries that are set in response to Leave Group messages, and it is also the
amount of time between group-specific query messages. This value may be tuned to
modify the "leave latency" of the network; a reduced value results in reduced time to
detect the loss of the last member of a group.
Enter a value, in seconds, from 1 to 25 (default = 1 second).
•
Query Interval: This is the interval between general queries sent by the modem. By
varying the query interval, a modem administrator may tune the number of IGMP
messages on the subnet; note that larger numbers cause the IGMP queries to be sent
less often.
Enter a value, in seconds, from 1 to 18000 (default = 125 seconds)
Ethernet-based Remote Product Management
Figure 7-20. Configuration | Routing | IGMP Page
7–42
CDM-425 Advanced Satellite Modem
MN-CDM-425
Revision 0
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