Figure 6-13: System Control Module (SCM) and PIC
10 Base-T Port Remote Alarms (future) Network Clock (future) POWER ACTIVE OOS Power Out of Service Active Front Rear NETWORK CLOCK REMOTE ALARMS ETHERNET ARRIS PIC-SCM NETWORK CLOCK REMOTE ALARMS ETHERNET MAC ADDRESS ALARM Alarm LED TEST A ct Link E th er ne t R S -2 32 Activity Status: Passing data - lit Otherwise - unlit LED Test 10 Base-T Port (RJ-45) Slot 20 Link Status: Equipped/connected - lit Otherwise - unlit RS-232 Serial Port ARRIS PIC-SCM (E) ARRIS PIC-SCM (O) Slot 19 MAC Address
6
Installing Modules and System Bring-upThe System Control Module supports: • Two maintenance ports
-
One maintenance RS-232 interface which supports Baud rate speeds of 9600, 19200, 38400, 57600, 115200-
One maintenance Ethernet interface • One bi-directional fabric port• A system maintenance processor
The Ethernet connection requires a 10 baseT, half duplex connection. There is only one port but it can be reached through either one of two RJ45 connectors — one in front and one in back. Only one of these maintenance Ethernet interfaces on the SCM (front or rear) may be used at a time. Slot 19 is reserved for the System Control Module (slot 20 is for its spare). The SCM in slot 19 is paired with a Fabric Control Module (FCM) in slot 17.
CAUTION
Removing the SCM in a simplex configuration (one SCM and one FCM) will shut down the C4 CMTS. The SCM provides the ON/OFF power control for all client modules in the C4 CMTS. If the simplex SCM is removed, then the power converters on all client modules are shut off.
Primary Software Function The primary software function on the System Control Module includes:
• Persistent store management • System maintenance control
• Monitoring the Fabric Control Module • Monitoring all client modules
• SNMP agent
• System wide data distribution • Alarms monitoring and management • Overload control
• Audit control
• Billing and measurement data
• Common Operation Administration Maintenance and Provisioning (OAM&P) and infrastructure software functions.
• Telnet processing • SSH processing • FTP processing
• RADIUS processing • TACACS+ processing • PacketCable COPS
• PacketCable IPSec processing
• PacketCable/VoIP Connection Management • PacketCable Gate Control
LED Status The LED status descriptions for the System Control Module are listed in
Table 6-1 below:
Figure 6-13, System Control Module (SCM) and PIC, on page 6-21 shows an example of the front faceplate of the SCM along with the rear PIC for the SCM.
LED Test Button The SCM provides an LED Test button in order to verify the functionality
of all active LEDs in the chassis. Testing the LED functionality on a chassis should be performed upon initialization, and then on a regularly scheduled basis in order to ensure alarms and service changes are duly noted.
SCM PIC Considerations The SCM PIC in slot 19 comes equipped with a MAC address and a printed
label. This MAC serves as the basis for all generated MAC addresses in the chassis. The slot 19 SCM PIC is also equipped with a fan controller. The fan controller is a daughter board that is only visible when the PIC is removed from the slot. The SCM PIC used in slot 20 has neither the fan controller nor the printed MAC address.
Table 6-1: LED Status Descriptions—System Control Module
LEDs Ethernet Module Status Power Active Out of Service System
Alarm Link Activity
Off Off Off Slot not powered
On Off Off Powered, in-service, but standby
On Off On Off Powered but out of service and not active On Off On On Powered, initializing, or running tests (not passing traffic) and not active, or system-
level fault detected.
On On Off Powered, functional, and in service (normal operational state) On (green) Layer 2 connectivity established
6
Installing Modules and System Bring-upProcedure 6-5 How to Install the SCM
Perform the following steps to install the SCM:
1 Wearing an antistatic wrist strap (or foot strap), connect the strap to one
of the ESD points on the chassis.
2 If a filler panel is installed in the front module slot, remove the panel. 3 Grasp the front of the module with both hands and align the module
between the guides in slot 19.
4 With the ejector levers fully open, slide the module all the way into the slot.
Press firmly with equal pressure top and bottom to align the module with the midplane connector.
5 Flip the ejector levers toward each other to close and lock the module in
the slot. The teeth of the ejector levers will engage the seating rails and the module will click into place if it is seated correctly. Repeat Steps 3-6 if it does not.
6 For a duplex configuration, insert a second SCM in slot 20.
7 When ready to attach the console management cables, refer to Procedure
Procedure 6-7, How to Cable the SCM, on page 6-26.
End of procedure
Procedure 6-6 How to Install the SCM Physical Interface Card (PIC)
NOTE
There are two types of SCM PIC. One is equipped with a daughter board for the fan controller and is labeled PIC SCM (0). This PIC must be installed in slot 19 whether the configuration is simplex or duplex. The other SCM PIC is labeled PIC SCM (E) and should be installed in slot 20. Perform the following steps to install the SCM Physical Interface Card (PIC):
1 If a filler panel is installed in the rear PIC slot, remove the panel.
2 Grasp the front of the module with both hands and align the PIC between
the guides in the corresponding slot in the rear of the chassis.
3 To ensure proper seating of the ejector levers, move them to an outward
position slightly less than perpendicular to the faceplate before seating the module in the slot.
4 Slide the PIC all the way into the slot, pressing firmly with equal pressure
top and bottom to align the module with the midplane connector
5 Flip the ejector levers toward each other to close and lock the module in
the slot. The module will click into place if it is seated correctly. Repeat Steps 2-5 if it does not.
End of procedure Connecting the Operator
Console This section gives a detail description of the cabling for the operator console. The operator console is necessary to initially power up and configure the C4 CMTS. Use an asynchronous terminal or a PC with asyn- chronous terminal emulation software.
The front panel connector on the System Control Module (in slot 19) is designed to connect directly to a host device with the supplied cable and adapter. Do not attach the console to any other network interface. The pinouts for the asynchronous serial console port, the RJ-45–to–RJ-45 rollover cable, and the RJ-45–to–DB-9 female DTE adapter is shown in Table 6-2 as follows:
Table 6-2: Cabling and Console Port Signaling Using a DB-9 Adapter
Console Port
(DTE) RJ-45–to–RJ-45Rollover Cable
RJ-45–to–DB-9 Terminal Adapter (connected to Rollover
Cable) Console Device
Signal RJ-45 Pin RJ-45 Pin DB-9 Pin Signal
RTS
(Request to Send) Pin 11 Pin 8 Pin 8 (Clear to Send)CTS DTR
(Data Terminal
Ready) Pin 2 Pin 7 Pin 6
DSR (Data Set Ready) TxD
(Transmit Data) Pin 3 Pin 6 Pin 2 (Receive DataRxD GND
(System Ground) Pin 4 Pin 5 Pin 5
GND (System Ground) GND
(System Ground) Pin 5 Pin 4 Pin 5 (System Ground)GND RxD
(Receive Data) Pin 6 Pin 3 Pin 3 (Transmit Data)TxD
6
Installing Modules and System Bring-upPin 1 is on the left when the RJ-45 connector tab is facing down as shown in the following graphic:
Figure 6-14: View of Pin-out of Rollover Cable
Procedure 6-7 How to Cable the SCM
Perform the following steps to cable the operator console.
1 Locate the supplied 8-foot shielded Ethernet, 10 BaseT, RJ-45–to–RJ-45
rollover cable and RJ-45–to–DB-9 female connector. –to-
2 Using the supplied cable, plug the RJ-45 end into the RS-232 connection
on the front of the SMC.
3 Plug the other end of the RJ-45 cable into the RJ-45–to–DB-9 adapter. 4 Plug the adapter into your operator console.
CTS
(Clear to Send) Pin 8a Pin 1 Pin 7 (Request to Send)RTS
a. Pin 1 is connected internally to pin 8.
Table 6-2: Cabling and Console Port Signaling Using a DB-9 Adapter (Continued)
Console Port
(DTE) RJ-45–to–RJ-45Rollover Cable
RJ-45–to–DB-9 Terminal Adapter (connected to Rollover
Cable) Console Device
5 When you are ready to begin configuring the C4 CMTS, power on the
chassis and boot the software using the procedures in Initial System Configuration on page 6-51. Perform initial setup by entering CLI commands on the operator console.
End of procedure
The following figure illustrates a console port connection:
Figure 6-15: Connecting the Console Port to a PC RJ-45 to DB-9 adapter RJ-45 to RJ-45 roll-over cable CMTS PC