Comtech EF Data CDM-840 - Manual (Page 119)

CDM-840 Remote Router Revision 2
Ethernet-based Remote Product Management MN-CDM840
6–51
6.4.4.5.3.1.2 Configuration | Network | Routing | IGMP
IGMP (Internet Group Management Protocol), 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 stops forwarding the multicast traffic
(received from the satellite) to the LAN.
Use this page to enable IGMP for configured multicast routes.
Figure 6-24. Configuration | Network | Routing | IGMP Page
IGMP
Use the drop-down list to select IGMP as Enable.
IGMP Configuration
The acceptable/valid operating ranges are provided in this section in parentheses, where
applicable.
• Version – Use the drop-down list to select IGMPv1, IGMPv2, or IGMPv3.
• Last Member Query Interval (1 to 25) – This is the maximum response time inserted into
group-specific queries that are set in response to Leave Group messages, and is also amount
of time between group-specific query messages. This value may be tuned to modify the