Mocomtech CDM-570 - Manual (Page 339)

CDM-570/570L Satellite Modem with Optional IP Module Revision 4
IP Module - CLI and Telnet Operation MN/CDM570L.IOM
Menu Options/Fields Entry Description
CDM-IP as Client:
IGMP Version used for
Unsolicited Reports U This parameter 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 M odule is configured to Recognize IGMP
Queries, the IP M odule will respond to a query in the
same version that the server used to initiate the query.
This parameter will assume one of (2) values:
1. V1
2. V2
The value of V1 will configure the IP M odule 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 will configure the IP M odule to use the
IGMP Version 2 protocol to join a Multicast Group
available on an IGMP Server in response to an IGMP
Query.
The user can toggle the value of the IGMP Version
used for Unsolicited Reports from ‘V1’ and ‘V2’ with
each selection.
CDM-IP as Client:
Force Cisco Router Alert
Option sending V1 reports 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 can assume one of the following (2)
values:
1. YES
2. NO
If set to YES, the IP M odule will generate IGMP
reports to join Multicast groups as specifically required
by some Cisco Router configurations.
If set to NO, the IP M odule will generate IGMP reports
to join Multicast groups as defined and implemented by
most IGMP servers.
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