Cisco Systems uBR7246VXR manuale d’uso

Q UICK S TART G UIDE Cisco uBR7246VXR Universal Broadband Router INCLUDING LICENSE AND W ARRANTY 1 Cisco One-Y ear Limited Hardw are W ar ranty T erms 2 Overview 3 Site Preparation 4 Installing the Chassis 5 Connecting the Chassis to P ower 6 P owering on the Cisco uBR7246VXR Router 7 T roubleshooting the Installation 8 Rel at ed Do cu me nta ti on[...]

2 1 Cisco One-Year Limited Hardware Warranty Terms There are special terms applicable to your hardw are warranty and variou s services that you can use during the warranty period. Y our formal W arranty Statement, including the warran ties and license agreements applicable to Cisco software, is av ailable on Cisco.com. Follow these steps to access [...]

3 2 Overview The Cisco uBR7246VXR universal b roadband router is used in Cisco Ca ble Modem T ermi n atio n System (CMTS ) solutions. Th e router allows high-speed data serv ices to be packaged similar to basic cable television service or video fare. The Cisco uBR7246VXR router: • Supports data and packetized voice con nectivity over a bidirectio[...]

4 Figure 1 Fr ont and Rear Chassis Views Card Slot and Logica l Interface Numbering Port adapter and cable interface line card slots maintain the same slot number regardless of whether other port adapters or cable interface line cards are in stalled or removed. However , when you move a port ada pter or a line card to a different slot, the logical [...]

5 3 Site Preparation Check the following: • Site is capable of maintaining an ambient temperature of 32 to 104 degrees Fahrenheit • Site power is available and adequate • Cabling requirements (type, distance) • Rack-mounting requirements (working space, proper airflow) Site Environment War ni ng This unit is intend ed for installation in re[...]

6 Power Connection Guideli nes for DC-Powered Systems The DC-input power supply al lows the Cisco uBR7246VXR router to operate on either -48 or -60 VDC systems. War ni ng Connect the unit only to DC power source that complies with the safety extra-low voltage (SEL V) requirements in IEC 60950 based safety standards. Statement 1033 The Cisco uBR7246[...]

7 4 Installing the Chassis Rack-Mount Installation Guidelines • Allow sufficient clearance around the rack fo r maintenance.Y ou ne ed 36 in. (91.44 cm) of clea rance to remove an d replace system componen ts. • If the Cisco uBR7246VXR chassis is the only unit in a rack, mount the chassis at the bottom of the rack. Use the rack-mount kit that c[...]

8 Verifying Contents After Unpacking Power cables, manuals, and other additional items are packaged in separate boxes. After you have unpacked the system, verify that you have received all the re quired components and documentation. Step 1 Using the packing list as a guide, verify that you have received everything that is listed, inclu ding the fol[...]

9 Attach the Rack-Mount Brackets to the Rear of the Chassis T o install the rack-mount brackets on the chassis for a re ar rack-mount configuration, complete the following steps: Step 1 Locate the threa ded holes in the rear sides of the chassis. Step 2 Alig n the first rack-mount bracket to the threaded holes in the right side of the chassis. See [...]

10 Figur e 5 Installing the Rack-Mount Br ac k ets so th e Fr ont of the Chassis Is Flush with the Rac k Note Y ou cannot use the cable management bracket in this configuration. Figur e 6 Installing the Rack-Mount Br ac k ets so the Fr ont of the Chassis Protr udes Out of the Rac k Attach the Rack-Mount Brackets to the Middle of the Chassis T o ins[...]

11 Figur e 7 Installing the Rac k-Mount Br ack ets in the Midd le of the Chassis f or Open or Rela y -T ype Racks Installing the Cable-Management Brackets If you are rack-mounting the ch assis at the rear or middle of th e chassis, both rack-mount brac kets and the cable-management bracket must be installe d before the chassis is instal led in the [...]

12 Installing the Chassis in the Rack War ni ng This unit is intend ed for installation in restricted access are as. A restricted access area can be accessed only through the use of a special tool, lock and key , or other means of security . Statement 1017 Caution Because the brackets support the weight of the entire ch assi s, be sure to use all o[...]

13 Installing the Chassis on a Workbench or Tabletop Complete the following steps to install the Cisco uBR7246 VXR router on a workbench or tabletop: Step 1 Remov e any debris and dust from the tabletop or workbench, and the surrounding area. Step 2 On the chassis, ensure that all captiv e screws on the network processing engi ne, the I/O controlle[...]

14 Step 1 Ensu re that there is no power going to the router . Step 2 Strip approxi mately 0.75 in (2 cm) of shielding from the wire. Step 3 In sert the stripped end of the wire into the ope n end of the ground lug, and crimp the lug. Step 4 Slide a segment of heat shri nk tubing over the exposed grounding lug and wire connection. Step 5 Shrink the[...]

15 5 Connecting the Chassis to Power Following are the procedures for connecting AC-input or DC-input power to your Cisco uBR7246VXR router . War ni ng This unit might have more than one power supply conn ection. All connections must be removed to de-energize the unit. Statement 1028 War ni ng T ake care when connecting uni ts to the supply circuit[...]

16 AC Power Supplies Step 1 At the rear of the router , ensure that the power switch on the power supply is in the OFF (0) position. Step 2 Slide the cable-retention clip to the left, away fr om the AC receptacle, and plug in the power cable. Step 3 Secure the cab le in the power supply AC receptacle by sliding the cable-retention clip to the ri gh[...]

17 Tools • 8-mm wrench or nut driver , or adjustable wrench (for connecting a grounding lug to a D C-input power supply only) • 7-mm wrench or nut driver , or adjustable wrench (for connecting the DC-input powe r lead strain-relief cover to a DC-i nput power supply only) • 14 A WG (2.08 mm 2 ) cable with a minimum of three conductors rated fo[...]

18 Figur e 12 Replacing the Strain-Relie f Co v er on a DC-Input Po w er Supply Ti p Figure 12 shows the grounding lug connected to th e two ve rtically aligned M5 grounding receptacles. Y ou may also connect the grounding lug to the two horizontally aligned M5 receptacles. Cabling For information about cabling, refer to the field-re placeable unit[...]

19 6 Powering on the Cisco uBR7246VXR Router War ni ng Blank faceplates and cover panels serve t hree important functions: they prevent exposure to haza rdous voltages and currents inside the chassis; they contain electromagnetic interferen ce (EMI) that might disrupt oth er equipment; and they direct the flow of cooling air through the chassis. Do[...]

20 The amplitude and shape of the downstrea m IF carrier does not change after the router is configured, re gardless of modulation scheme used whether 64 or 256-QAM. Ti p By default, Cisco uBR-MC16U or Cisco uBR-MC 28U cable interface line cards have no output until the DS freq is set and the command no cab down rf-shut is applied.[...]

21 7 Troubleshooting the Installation This section contains information to help installers an d technicians troublesho ot the hardware installation. Figure 13 shows the general troubleshooting strategy used to troubl eshoot th e hardware. Refer to this flow chart as n ecessary , and follow the steps to isolate hard wa re problems to a specific subs[...]

22 Note If you are using a Cisco uBR7200-NPE-G1, you do not need an I/O controller module installed in the chassis. Use the show version command ( Router# show version ) to determine the NPE that is installed in your router . 3. If the clock card ENABLED LED is off, verify that the card is securely installed in the chassis. 4. Always verify that th[...]

23 8 Related Documentation • Cisco uBR7200 Series Universal Broadba nd Router Hardware Installation Guide , at the following URL: http://www.cisco.com/en/US/products/hw/cable/ps2217/prod_ installation_guides_list.html • Field-replaceable units (FRU) information, at the following URL: http://www.cisco.com/en/US/products/hw/cable/ps2217/prod_ ins[...]

24 9 Obtaining Documentation and Submitting a Service Request For information on obtaining documentation, submitting a service request, and gathering additional information, see the monthly What’ s New in Cisco Product Documentation , which also lists all new and revise d Cisco technical documentation, at: http://www .cisco.com/en/US/docs/general[...]

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