Comtech EF Data CRS-311 - Manual (Page 95)

CRS-311 1:1 Redundancy Switch Revision 7
Modem, RMI/TMI, and Switch Configuration MN/CRS311.IOM
4–5
4.2.4.2 Switch to SLM-5650/5650A Redundancy Configuration
4.2.4.2.1 TTL (Switch) Configuration (For All Traffic Data Types)
The CRS‐311 communicates to the Redundant and Traffic modems via a serial TTL bus contained
within the HD‐15 “J9 Auxiliary” connector on the modem’s rear panel. An HD‐15M to HD‐15F
Control Cable connects each modem to the CRS‐311.
To use 1:1 redundancy, the SLM‐5650/5650A must have communications configured to TTL
(Switch) in order to communicate with the CRS‐311.
Follow these steps to set the serial interface:
Step Task
1 From the SLM-5650/5650A front panel menu, navigate to Config: Remote Æ SerialConfig.
2 Set Interface to TTL (SWITCH).
3 Set Format to 8N1.
4 Set Baudrate to 9600 Baud.
5 Verify that Traffic Modem is ONLINE and the Redundant Modem is OFFLINE.
For detailed information on using the front panel menus, see Chapter 5. FRONT PANEL
OPERATION in the SLM‐5650 or the SLM‐5650A Installation and Operation Manual.
4.2.4.2.2 Ethernet Router Mode Configuration via Optional Network
Processor (NP) Interface
Ethernet Router Mode redundancy, when using SLM‐5650/5650A modems equipped with the
optional Network Processor (NP) Interface, is provided by a Dual IP Addresses scheme. In
Ethernet Router Mode, a Single IP Address should NOT be used and will be automatically
overwritten by the modem. You must verify that the modems are in Dual IP Address Mode.
Follow these steps to verify the Dual IP Address Mode on the Online Modem:
Step Task
1
From the SLM-5650/5650A front panel, navigate to Config: Remote Æ EthernetConfig Æ
Option Card Addr ÆNetwork Proc.
2 Verify that the Mode is set to DUAL.
A traffic IP Address is used as the gateway for networked devices. The traffic IP address always
“floats” with whichever modem is online. The traffic IP address on the Offline Modem is
inactivated.
Follow these steps to enter the “shared” traffic IP address on the Online Modem: