Modem-To-User Ip (10/100 Ethernet) Interface Examples; Data Interface Connections Using Ip Sub-Mux; Managed Switch Mode (With/Without The Optional Ip Packet Processor) - Comtech EF Data CRS-170A Installation And Operation Manual

CRS-170A L-Band 1:1 Redundancy Switch
Cables and Connections
5.3.2.2

Modem-to-User IP (10/100 Ethernet) Interface Examples

5.3.2.2.1

Data Interface Connections Using IP Sub-Mux

•
Appendix N. IP SUB-MUX in CDM-625A Advanced Satellite Modem Installation and
Operation Manual (CEFD P/N MN-CDM625A)
•
Chapter 15. IP SUB-MUX in CDM-625 Advanced Satellite Modem Installation and
Operation Manual (CEFD P/N MN-CDM625)
Subsystem Multiplex – referred to by CEFD as Sub-Mux – is a secondary framing structure that
combines one to four ports of IP (10/100 Ethernet) traffic (see
) with any currently available combination of framing and interface type (see Figure 5-5 through Figure
5-12) – excluding IP itself. The composite data rate to the modulator and from the demodulator is
referenced to the primary, non-IP data interface rate by a specific user-selected ratio.
5.3.2.2.2 Managed Switch Mode (with/without the Optional IP Packet
Processor)
shows the block diagram for the CDM-625A or CDM-625 1:1 modem configuration using the IP (10/100
Ethernet) Interface in Managed Switch Mode (also called Ethernet Bridge Mode). Figure 5-14 shows the
cabling example for this setup.
This configuration requires no cabling kit – you must use user-provided Ethernet cables and Layer 2
switches for direct connection to the modem via one to four RJ-45 ports. This cabling example shows
use of all four Ethernet ports.
1) When in Managed Switch Mode with the Packet Processor either not installed or
installed but disabled, all Ethernet ports on the Offline modem will be disabled. The
exception is if one of the ports has been set to be the Dedicated Management Port. See
the CDM-625A or CDM-625 Advanced Satellite Modem Installation and Operation
Manual (CEFD P/N MN-CDM625A or MN-CDM625) for instructions on configuring one
of the four 10/100 Ethernet ports as the Dedicated Management Port for remote
Ethernet M&C (Dedicated Management Port is available only without the optional
IP Packet Processor).
2) When in Managed Switch Mode with the optional IP Packet Processor installed and
enabled, only Port 1 of the Offline modem is enabled, while Ports 2, 3, and 4 on the
Offline modem are disabled.
3) TO AVOID ETHERNET NETWORKING LOOPS – When in Managed Switch Mode and
using more than one Ethernet port, the ports must not be connected to the same
Layer 2 Switch unless they are isolated from one another. The ports can be isolated by
connecting each port to a separate Layer 2 Switch (see <NEW 5-13 TAG> ), or by
configuring separate VLAN's for each port on a single Layer 2 Switch.
5–15
MN/CRS170A.IOM
Revision 14