Comtech EF Data CRS-300 - Manual (Page 101)

CRS-300 1:10 Redundancy Switch MN/CRS300.IOM
Cables and Connections Revision 19
4–27
3) When you use Ethernet in combination with other data interfaces in the
redundancy system – i.e., an IP Sub-Mux configuration – you must use the
wired-around method, explained in Sect 4.4.3.8.2, to make all cabling
connections.
4.4.3.8.1 Ethernet Data Connection – Wired-thru Method (No Sub-Mux)
This redundancy approach is the recommended and preferred connection
method.
The wired-thru Ethernet connection method is the easiest and simplest choice for Ethernet
redundancy. This connection method – the same one that you use on the standard serial data
interface – provides a single connection (i.e., using one of four available RJ-45 ports) for the User
Data Interface, and provides simple Form-C relays that route the Ethernet connection from your
user connection to either the Traffic or Redundant Modem.
See Figure 4-9 through Figure 4-11 – If the wired-thru method of Ethernet is the driving traffic
data type Note 1 :
First, connect the Control/Data Cable CA/WR0066 (for control/data purposes) between the
Redundant CDM-625/A and the Switch RMI (see Sect. 4.4.3.1).
Next, do these steps to connect and secure the Ethernet Data Cable CA-0000121 (HD-50M to
RJ-45M, 6’) between the Redundant CDM-625/A and the Switch RMI:
• RJ-45F “10/100 Ethernet” connector labeled "1" (Port1) on the Redundant CDM-625/A, to
• HD-50M connector labeled “J1” on the Switch RMI.
Then, connect and secure the Control Cable CA-0000069 (HD-15M to DB-9M, 6’) between the
Switch CRS-316 or CRS-336 TMI(s) and the Traffic CDM-625/A(s).
Finally, do these steps to connect and secure the CAT5 Data Cable PP/CAT5FF7FTGY (RJ-45M to
RJ-45M, 7’) between the Switch TMI(s) and Traffic CDM-625/A(s):
• RJ-45F connector labeled "J5" on the Switch TMI(s) Notes 2,3 , to
• RJ-45F "10/100 Ethernet" connector labeled "1" (Port 1) on the Traffic CDM-625/A(s).
1) Where the traffic data type is Ethernet, you can only use one of four Ethernet
ports, in Ethernet Bridge Mode, on the CDM-625/A rear panel.
2) You may use the Switch CRS-316 for single-port Ethernet Bridge Mode or
EIA-530, but not both at the same time. The CRS-316 does not handle Sub-Mux
operation (where the CDM-625/A may use both Ethernet Bridge Mode and
EIA-530 simultaneously). Sub-Mux operation is explained in the next section,
Sect. 4.4.3.8.2 Ethernet Data Connection – Wired-around Method (Sub-Mux).