Mocomtech CIM-550 - Manual (Page 170)

CiM-550 IP Enabled Satellite Modem Rev. 2
CLI and Telnet Interface CD/CIM550.IOM
144
Menu Options/Fields Entry Description
CiM as Server:
Number of missed
responses before leaving
IGMP group M Defines the number of membership queries that go
unanswered from LAN clients before the Ehternet
Interface will no longer forward data for that IGMP
group.
Consider a CiM that has the IGMP query period set to
60 seconds and the number of missed responses set
to 3. If a client joins an IGMP group, then the service to
that group will not be discontinued until no clients
respond to a query from the CiM for a period of 60*3 =
180 seconds.
CiM as Client:
Recognized IGMP queries C The Recognize IGMP Queries parameters determines
if the CiM should respond to periodic queries from an
IGMP server that publishes a request to join a specified
multicast group. This parameter can assume one of (2)
values:
1. Yes
2. No
If set to YES, the CiM will respond to an IGMP query
by requesting to join a Multicast Group published by
the server that is defined in the CiM’s route table.
If set to NO, the CiM will not respond to IGMP queries
from a server. In this type of configuration, the CiM
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.
CiM 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 CiM is configured to Recognize IGMP
Queries, the CiM 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 CiM 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 CiM 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.