Product specifications

CDD-562L/564 Demodulator with IP Module Revision 1
IP Module Ethernet Interface Overview MN/CDD564L.IOM
6–6
6.4.2 CDD562L/564/564L Compatibility
The CDD-56X is compatible with other Comtech EF Data IP modems (referred to hereafter as
CDM-IP), provided the modems have similar operating modes and IP options.
The following is a list of compatible CDM-IP modems:
CDD-564L
IP FW Version
Comtech EF Data
IP Modem / IP FW
Version
Comments
Version 1.1.0 or later
CDM-IP 550
Version 1.3.0 or later
Must have Framer II Module (PL/9956-1) to
support Data Compression IP option
Version 1.1.0 or later
CDM-IP 300L
Version 1.3.0 or later
Must have Framer II Module (PL/9956-1) to
support Data Compression IP option
Version 1.1.0 or later
CDM-570/570L
Version 1.4.0 or later
6.5 Typical IP Module Operational Setups
The CDD-56X has several modes of operation. This section provides typical setup examples for
the unit as a means to determine the best mode of operation for the appropriate network topology
and Ethernet traffic environment.
6.5.1 IP Module Working Modes
Typical CDM-IP modems support two Working Modes: easyConnect™ and Router Mode;
however, the demodulator only supports Router Mode, so the CDM-IP modem that is
transmitting to demodulator must be in Router Mode. Non-IP traffic is not supported in
Router Mode.
Router Mode supports three HDLC Addressing Modes: Point-to-Point, Small Network, and Large
Network. Separate HDLC Modes allow the user to minimize the HDLC overhead transmitted
over the satellite based on the size of their network.
In Router/Point-to-Point Mode, no HDLC address is transmitted, Router/Small Network transmits
1 byte, and Router/Large Network transmits 2 bytes as part of HDLC header for each packet.
In the sections that follow, the functionality of these modes is described in further detail, in order
to optimize the Comtech EF Data IP modems in the network, based upon Network Topology and
Ethernet Traffic requirements.
IMPOR TANT
1. The demodulator only supports Router Mode, so the CDM-IP modem that is
transmitting to demodulator must be in Router Mode.
2. The HDLC Address Mode of the Comtech EF Data IP modems must be
identical to pass traffic between the TX modems and the demodulator.
3. Changing the HDLC Address Mode of the demodulator requires the IP
Module to be rebooted. Before the user can select a different mode, the
demodulator will notify the user that changing the mode will require a reboot.