Cisco UBR7246VXR Краткое руководство по эксплуатации - Страница 19
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Powering on the Cisco uBR7246VXR Router
Warning
Blank faceplates and cover panels serve three important functions: they prevent exposure to hazardous voltages
and currents inside the chassis; they contain electromagnetic interference (EMI) that might disrupt other
equipment; and they direct the flow of cooling air through the chassis. Do not operate the system unless all cards,
faceplates, front covers, and rear covers are in place. Statement 1029
After installing your Cisco uBR7246VXR universal broadband router and connecting cables, power on the router as follows:
Step 1
Check for the following:
a. Every module is securely inserted in the right slot and the captive installation screws are tightened.
b. All network interface line cables are connected to the port adapters.
c. Hybrid fiber-coaxial (HFC) network coaxial cable is connected to the cable interface cards.
d. Primary and secondary DB-15 T1 interface cables are attached to the clock card.
e. Each port adapter is inserted in its slot and the port adapter lever or retention clip is in the locked position.
If the port adapters, cable interface line cards, network processing engine, or I/O controller are not properly seated
Caution
or not fully locked into place, the Cisco uBR7246VXR router might enter a continuous restart loop.
f. A flash memory card is installed in its Personal Computer Memory Card International Association (PCMCIA) slot.
g. Each AC-input power cable is connected and secured with the cable-retention clip.
h. The +48 and –48 DC leads are secured underneath the strain-relief cover on the power supply faceplate.
i. Each DC lead is connected and secured to the power source and the chassis is properly grounded.
j. For installed DC-input power supplies, ensure that the power source is restored.
k. The console terminal is turned on.
Place the power switch on the power supply in the ON (|) position. Repeat this step if a second power supply is installed.
Step 2
The green OK LED on the power supply comes on.
Step 3
Listen for the fans; you should immediately hear them operating. In a very noisy environment, also look for air
movement around the chassis to verify that the fans are operating. If the Cisco uBR7246VXR router was recently
switched off, it might take up to 90 seconds for the power supply to restart and the fans to start operating.
Step 4
During the boot process, observe the system LEDs. The LEDs on most of the port adapters come on and go off in an
irregular sequence. Some may come on, go off, and come on again for a short time. On the I/O controller, the POWER
OK LED comes on immediately.
Step 5
Observe the initialization process. When the system boot is complete (a few seconds), the NPE begins to initialize the
port adapter, cable interface line cards, and the I/O controller. During this initialization, the LEDs on each port adapter
behave differently (most flash on and off). The ENABLED LED on each port adapter and cable interface line card comes
on when initialization is complete, and the console screen displays a script and system banner similar to the following:
Cisco Internetwork Operating System Software
IOS (tm) uBR7200 Software (uBR7200-I-M), Version 12.0(5)T [smith 100]
Copyright (c) 1986-1999 by cisco Systems, Inc.
Compiled Mon 12-Jul-99 04:10 by smith
To facilitate headend or hub installation, a Cisco uBR7246VXR universal broadband router equipped with at least one
Tip
cable interface line card (Cisco uBR-MC16C,E,S,X or Cisco uBR-MC28C,X), generates a downstream IF carrier when
it starts running. The downstream IF carrier will be present if the line card is properly installed and passes diagnostics,
the router has been powered on for more than two minutes, the IF downstream shutdown command (no cable
downstream if-output) has not been configured, or the Cisco uBR7246VXR router is not in ROMMON mode.
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