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CRS-300 1:10 Redundancy Switch
Modem, RMI/TMI, and Switch Configuration
5.2.4.4
Switch to SLM-5650/5650A Redundancy Configuration
5.2.4.4.1
TTL (Switch) Configuration (For All Traffic Data Types)
The CRS-300 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-300.
To use 1:N redundancy, the SLM-5650/5650A must have communications configured to TTL
(Switch) in order to communicate with the CRS-300. To set the serial interface:
Step
Procedure
1
From the SLM-5650/5650A front panel menu, navigate to Config: Remote
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 SLM-5650A Installation and Operation Manual.
5.2.4.4.2
Ethernet Bridge Mode Configuration via Optional Network
Processor (NP) Interface
Due to backplane limitations, the CRS-300 can support Single-port Ethernet Bridge Mode only.
Ethernet Bridge Mode redundancy, when using SLM-5650/5650A modems equipped with the
optional Network Processor (NP) Interface, is provided by a single IP address scheme.
To verify Single IP Address Mode on the Online Modem:
Step
Procedure
From the SLM-5650A front panel, navigate to Config: Remote
1
Option Card Addr
2
Verify that the Mode appears as Single
To verify Single IP Address Mode on the Offline Modem:
Step
Procedure
1
From the SLM-5650A front panel, navigate to Config: Remote
Option Card Addr
2
Set the Traffic IP Address of the Online Modem only.
3
Verify that the Traffic IP Address also appears on the Offline Modem.
In Ethernet Bridge Mode, the CRS-300 will keep the Online Modem's active Ethernet Port turned
on, while the Offline Modem's active Ethernet Port is turned off. The traffic IP address is only
accessible on the Online Modem.
Network Proc.
.
Network Proc.
5–6
Revision 16
MN/CRS300.IOM
EthernetConfig
EthernetConfig
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