Comtech EF Data CDM-570 Installation And Operation Manual page 302

CDM-570/570L Satellite Modem with Optional IP Module
Ethernet IP Module - CLI and Telnet Operation
Selection
Modem as Client:
Recognized IGMP queries
Modem as Client:
IGMP Version used for
Unsolicited Reports
Modem as Client:
Force Cisco Router Alert
Option sending V1 reports
Modem as Client:
Unsolicited Report
Interval, sec
Entry Description
C Determines if the IP Module should respond to periodic queries from an
IGMP server that publishes a request to join a specified multicast group.
This parameter assumes either of the following values:
1. YES
2. NO
If set to YES, the IP Module will respond to an IGMP query by requesting to
join a Multicast Group published by the server that is defined in the IP
Module's route table.
If set to NO, the IP Module will not respond to IGMP queries from a server. In
this type of configuration, the IP Module may be configured to unconditionally
request to join an IGMP group at an interval specified by the "Unsolicited
Report Interval" option in the Transmitter IGMP Client Configuration Page.
U Defines which version of the IGMP protocol should be followed when
attempting to join a group on a Multicast Server via an unsolicited report.
When the IP Module is configured to Recognize IGMP Queries, the IP
Module will respond to a query in the same version that the server used to
initiate the query.
This parameter assumes either of the following values:
1. V1
2. V2
The value of V1 configures the IP Module to use the IGMP Version 1 protocol
to join a Multicast Group available on an IGMP Server in response to an
IGMP Query.
The value of V2 configures the IP Module to use the IGMP Version 2 protocol
to join a Multicast Group available on an IGMP Server in response to an
IGMP Query.
Toggle the value of the IGMP Version used for Unsolicited Reports from 'V1'
and 'V2' with each selection.
A Some Cisco Routers may require the definition of a Router Alert Option to
recognize a report from a Client to join a Multicast group. The IP Router Alert
Option is defined in RFC2113 and was introduced by Cisco. While this option
is not part of the IGMP standard, most IGMP V2 implementations contain this
option. However, most implementations of IGMP V1 do not contain this
option. This parameter is defined to prevent possible conflicts in networks in
which a Cisco Router is configured as an IGMP V1 server.
This parameter assumes either of the following values:
1. YES
2. NO
If set to YES, the IP Module generates IGMP reports to join Multicast groups
as specifically required by some Cisco Router configurations.
If set to NO, the IP Module generates IGMP reports to join Multicast groups
as defined and implemented by most IGMP servers.
I Configures the IP Module to generate unsolicited reports to join a Multicast
Group at specified time intervals. This value specifies the number of seconds
between unsolicited reports. A value of zero implies that no unsolicited
reports to join a Multicast group should be generated by the IP Module.
Each unsolicited report to join a Multicast group will use the version of the
IGMP protocol as specified by the IGMP Version used for Unsolicited
Reports option.
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Revision 12
MN/CDM570L.IOM