CDM-570A/570AL Satellite Modem with Optional Packet Processor
Revision 5
Ethernet-based Remote Product Management 7–39 MN-CDM570A
CDM-570A as Client
• Recognize IGMP Queries – Use the drop-down list to select No or Yes.
• IGMP Version for Unsolicited Reports – Use the drop-down list to select V1 or V2.
• Unsolicited Report 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).
• Force Router Alert Option Sending V1 Reports – Use the drop-down list to select No
or Yes.
CDM-570A as Server
• Enable IGMP – Use the drop-down list to select No or Yes.
• IGMP Version for Unsolicited Reports – Use the drop-down list to select V1 or V2.
• IGMP Query Period – 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 600.
• IGMP Maximum Response Time – This is the maximum response time inserted into the
periodic general queries. By varying the Query Response Interval, a modem
administrator may tune the “burstiness” of IGMP messages on the subnet; note that
larger values make the traffic less “bursty” as host responses are spread out over a large
interval.
Enter a value, in seconds, from 1 to 30.
The number of seconds assigned to the Query Response Interval must be
less than the Query Interval.
Click [Submit] to save.
IGMP Table
This read-only table displays the Multicast Routes that are active on the modem.
Click [Refresh] to update this section with its latest available information.
Make sure to also click [Save PaP Parameters] on the ‘Admin | PaP Save’ page
before proceeding further.
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