QUICK START GUIDE Cisco uBR7225VXR Universal Broadband Router 1 Overview 2 Preparing for Installation 3 Installation Guidelines 4 Installing the Chassis 5 Connecting the Chassis to Power 6 Cabling 7 Powering on the Cisco uBR7225VXR Router 8 Troubleshooting the Installation 9 Related Documentation 10 Obtaining Documentation and Submitting a Service Request 1 Overview The Cisco uBR7225VXR universal broadband router is used in Cisco Cable Modem Termination System (CMTS) solutions.
• Supports both 6-MHz North American channel plans using ITU-T J.83 Annex B operation and 8-MHz phase alternating line (PAL) and Sequential Coulour Avec Memoire (SECAM) channel plans using ITU-T J.83 Annex A operation. • Works in conjunction with dialup access products to support upstream traffic from DOCSIS-based cable interfaces connected to the public switched telephone network (PSTN). • Includes environmental monitoring and reporting functions. • Supports online insertion and removal (OIR).
Figure 1 Front View of the Chassis US 5 US 3 US 2 US 1 -RF US 0 uBR - MC16U 270489 US 7 US 6 US 5 US 4 US 3 US 2 US 1 US 0 -RF -RF DS0 uBR - MC28U DS1 uBR7225-VXR S L O T 2 DS0 S L O T 1 US 4 1 2 1 Cable interface card slot 1 Figure 2 2 Cable interface card slot 2 Rear View of the Chassis 1 2 3 4 5 uBR7225-VXR 8 7 270490 uBR7225-VXR 6 1 Gigabit Ethernet 0/1 5 Console port 2 Gigabit Ethernet 0/2 6 Auxiliary port 3 Gigabit Ethernet 0/3 7 AC-input power su
Card Slot and Logical Interface Numbering The cable interface line card slots maintain the same slot number regardless of whether other cable interface line cards are installed or removed. However, when you move a line card to a different slot, the logical interface number changes to reflect the new slot number. (See Figure 3.
Temperature and Humidity Requirements Table 1 and Table 2 list the nominal operating and non-operating environment requirements. Any measurements that approach the minimum or maximum of a range indicate a potential problem.
Installation Tools and Equipment The tools and equipment listed below are recommended as the minimum necessary to install the Cisco uBR7225VXR router. Other equipment may include test equipment to check electronic and optical signal levels, power levels, and communications links.
Table 3 Ethernet and Fast Ethernet Maximum Transmission Distances Transceiver Speed Cable Type Transmission Mode Maximum Distance Between Stations 100 Mbps Category 6 Full duplex and half duplex 328 ft (100 m) 100 Mbps MMF Half duplex Full duplex 1312 ft (400 m) 1.2 mi (2 km) 100 Mbps Single mode fiber (SMF) Half duplex Full duplex 1312 ft (400 m) 6.2 mi (10 km) 1000 Mbps MMF and SMF Half duplex Full duplex 1804 ft (550 m) 6.
Rack-Mount Installation Guidelines • Allow sufficient clearance around the rack for maintenance.You need 36 in. (91.44 cm) of clearance to remove and replace system components. • Always place the heavier equipment in the lower half of the rack. • If the rack is provided with stabilizing devices, install the stabilizers before mounting the chassis. • Make sure that open or relay racks are bolted to the floor.
1 Installed in 4-post rack—rear installation 3 2 Installed in a Telco-type rack—middle rack-mount installation 4 Installed in 4-post rack—protruding front installation Installed in 4-post rack—front installation Attach the Rack-Mount Brackets to the Rear of the Chassis To install the rack-mount brackets on the chassis for a rear rack-mount configuration, complete the following steps: Step 1 Locate the threaded holes in the rear sides of the chassis.
Step 3 Thread the four M4 x 6-mm Phillips flathead screws through the bracket and into the side of the chassis. Use a number 2 Phillips screwdriver to tighten the screws. Step 4 Repeat Step 1 through Step 3 for the other rack-mount bracket. Note Ensure you fasten the cable-management bracket before installing the chassis in the rack.
Installing the Cable-Management Bracket Before installing the chassis in the rack, both rack-mount brackets and the cable-management bracket must be installed. To install the cable-management bracket, complete the following steps: Step 1 Align the cable-management bracket with the two right front threaded holes in the chassis as shown in Figure 7. Step 2 Thread the two M3 x 8-mm Phillips panhead screws through the bracket and into the chassis. Use a number 2 Phillips screwdriver to tighten the screws.
Installing the Chassis in the Rack Warning This unit is intended for installation in restricted access areas. 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 chassis, be sure to use all of the required slotted screws to fasten the two rack-mount brackets to the rack posts.
Connecting the Chassis to Ground Before connecting power and turning on the router, you must provide an adequate ground connection for your system. Two M5 ground receptacles provide a chassis ground connection for electrostatic discharge (ESD) and for your safety. A grounding lug mount is provided on the rear of the chassis. The mounting nuts are in the lower right corner of the rear of the chassis. (See Figure 8.
To connect the Cisco uBR7225VXR router chassis to ground, complete the following steps: Step 1 Ensure that there is no power going to the router. Step 2 Use the wire stripper to strip approximately 0.75 in (2 cm) of shielding from one end of the 6-AWG wire. Step 3 Insert the stripped end of the wire into the wire receptacle on the grounding lug. Step 4 Use the crimping tool to carefully crimp the wire receptacle around the wire. Step 5 Attach the grounding lug to the router using two M5 screws.
1 Power switch 3 AC-input receptacle 2 Handle 4 Captive installation screw Step 2 Plug the power cable into the AC connector of the power supply. Note For additional AC power cable strain relief, secure the cable to the power supply handle by inserting a nylon cable tie through the hole in the handle and around the cable. Step 3 Plug the AC power supply cable into the AC power source. Repeat Step 1 through Step 3 for the second power supply, if required.
7 Powering on the Cisco uBR7225VXR Router After installing your Cisco uBR7225VXR universal broadband router and connecting cables, check the following conditions before powering on the router: • Every component is securely inserted in the right slot and the captive installation screws are tightened. • All network interface line cables are connected to the Ethernet ports on the NPE. • Hybrid fiber-coaxial (HFC) network cable is connected to the cable interface cards.
Identify Startup Problems Startup problems are commonly caused by source power problems or a board (network processing engine or cable interface line card) that is not properly connected to the midplane. With the exception of the fan tray and network processing engine, LEDs indicate all system states in the startup sequence. By checking the state of the LEDs, you can determine when and where the system failed in the startup sequence. 1. First check that you are properly plugged into the power source.
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