Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide

Installing the Cisco uBR7225VXR Router

This chapter explains how to install and connect a Cisco uBR7225VXR universal broadband router and contains the following sections:

•Cisco uBR7225VXR Router Installation Checklist

•Cisco uBR7225VXR Router Chassis Rack-Mounting Options

•Installing the Brackets on the Chassis

•Installing the Chassis in a Workbench or Tabletop Environment

•Cabling

•Console and Auxiliary Port Connection Equipment

•Protective Grounding

•Connecting Power

•Powering On the Cisco uBR7225VXR Router

Cisco uBR7225VXR Router Installation Checklist

A rack-mount and cable-management kit is included in the shipping container. The rack-mount brackets in the kit are for mounting the Cisco uBR7225VXR in standard, 19-inch-wide, 4-post equipment racks or telco-type equipment racks. The rack-mount brackets are not suitable for use with other racks, such as 23-inch telco racks. The cable-management bracket is designed to relieve the strain on interface cables that are installed on cable interface line cards in a Cisco uBR7225VXR router.

If you are installing an equipment shelf or using mounting hardware other than that supplied with the chassis, review the guidelines in the "Equipment Racks" section, then proceed to the "Cisco uBR7225VXR Router Chassis Rack-Mounting Options" section.

If you do not plan to install your Cisco uBR7225VXR router in an equipment rack, proceed to the "Installing the Chassis in a Workbench or Tabletop Environment" section.

To assist you with your installation and to provide a historical record of what was done, and by whom, use "Cisco uBR7225VXR Router Installation Checklist" section. Make a copy of this checklist and indicate when each procedure or verification is completed. When the checklist is completed, place it in your site log (see "Site Log") along with the other records for your new router.

Cisco uBR7225VXR Router Chassis Rack-Mounting Options

The chassis mounts to two rack posts with brackets that attach to either the front, middle, or rear sides of the chassis. The inside width between the posts or mounting strips (left and right) must be at least 17.5 inches (44.45 cm).

Some equipment racks provide a power strip along the length of one of the mounting strips. Figure 3-1 shows a typical 4-post equipment rack with a power strip along one of the back posts. If your rack has this feature, consider the position of the strip when planning fastener points and ensure that you will be able to pull cable interface line card cables and other FRUs straight out of their respective slots.

The inlet and exhaust ports for cooling air are located on the right and left of the chassis, respectively, so multiple universal broadband routers can be stacked in a rack with little or no vertical clearance.

Note We recommend the rear bracket mounting system for 4-post racks. This method enables you to keep cables from protruding too far out in front of the Cisco uBR7225VXR router and to simultaneously manage the cables at the front of the chassis with the cable-management bracket.

Figure 3-1 Typical 4-Post Equipment Rack Posts and Mounting Strips

Mounting options are as follows:

•If you want the cable interface line card end (the front) of the chassis recessed in the rack, install the rack-mount brackets at the rear of the chassis in the orientation shown in Figure 3-2.

•If you want the front of the chassis mounted flush with the front posts of the rack, install the rack-mount brackets at the front of the chassis in the orientation shown in Figure 3-3.

•If you want the front of the chassis protruding out of the rack, install the rack-mount brackets at the front of the chassis in the orientation shown in Figure 3-4.

•If you want the chassis in a telco-type rack, install the rack-mount brackets in the middle of the chassis in the orientation shown in Figure 3-5.

Figure 3-2 Installing the Chassis in a 4-Post Rack—Rear Installation

See the "Installing Rack-Mount Brackets on the Rear of the Chassis" section.

Figure 3-3 Installing the Chassis in a 4-Post Rack—Flush-Mounted Front Installation

See the "Installing Rack-Mount Brackets on the Front of the Chassis" section for bracket mounting information.

Figure 3-4 Installing the Chassis in a 4-Post Rack—Chassis Protruding Front Installation

See the "Installing Rack-Mount Brackets in the Middle of the Chassis" section for bracket mounting information.

Figure 3-5 Installing the Chassis in a Telco-Type Rack

Cable-Management Bracket Requirements

There are two cable-management bracket configurations available for rack-mounting the Cisco uBR7225VXR router. In the first configuration, for a 4-post rack, the rack-mount brackets are installed at the rear of the chassis and the cable-management bracket is installed at the right front of the chassis. (See Figure 3-6.) You must install both sets of brackets before you install the chassis in the rack.

In the second configuration, for a telco-type rack, the rack-mount brackets are installed at the middle of the chassis and the cable-management bracket is installed at the right front of the chassis. (See Figure 3-7.) You must install both sets of brackets before you install the chassis in the rack.

Figure 3-6 Installing the Chassis in a 4-Post Rack with an Installed Cable-Management Bracket

Figure 3-7 Installing the Chassis in a Telco-Type Rack with an Installed Cable-Management Bracket

Installing the Brackets on the Chassis

This section explains how to install the rack-mount brackets and cable-management bracket on a
Cisco uBR7225VXR universal broadband router. Before installing the chassis in the rack, you must install cable-management bracket and a rack-mount bracket on each side of the front, middle, or rear of the chassis.

The parts and tools required for installing the rack-mount and cable-management bracket are listed in the "Installation Tools" section.

Installing Rack-Mount Brackets on the Rear of the Chassis

To install the rack-mount brackets and cable-management bracket 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 2 Align the first rack-mount bracket to the threaded holes in the right side of the chassis. See Figure 3-8.

Figure 3-8 Installing the Rack-Mount Brackets on the Rear of the Chassis

Note There are five holes in each of the rack-mount brackets for the Cisco uBR7225VXR router. Four holes are used for front and middle mount, and five holes are used for rear mount.

Step 3 Thread five M4 x 6-mm Phillips flathead screws through the rack-mount 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.

Step 5 If you plan to include the cable-management bracket in your rear rack-mount configuration, align the bracket with the two right front-side holes.

Step 6 Thread two M3 x 6-mm Phillips panhead screws through the cable-management bracket and into the chassis, and tighten the screws.

This completes the procedure for installing the rack-mount brackets and the cable-management bracket on the chassis for a rear rack-mount configuration. Proceed to the "Installing the Chassis in the Rack" section.

Caution To prevent injury, review the safety precautions in Chapter 2 "Preparing the Cisco uBR7225VXR Router for Installation," before installing the Cisco uBR7225VXR router in a rack.

Installing Rack-Mount Brackets on the Front of the Chassis

To install the rack-mount brackets and cable-management bracket on the chassis for a front rack-mount configuration, complete the following steps:

Step 1 Locate the threaded holes in the front sides of the chassis.

Step 2 If you want the front of the chassis flush with the front of the rack, align the first rack-mount bracket to the threaded holes in the right side of the chassis as shown in Figure 3-9.

If you want the front of the chassis protruding from the rack, align the first rack-mount bracket to the threaded holes in the right side of the chassis as shown in Figure 3-10.

Note There are five holes in each of the rack-mount brackets for the Cisco uBR7225VXR. Four holes are used for front and middle mount, and five holes are used for rear mount.

Figure 3-9 Installing the Rack-Mount Brackets so the Front of the Chassis Is Flush with the Rack

Figure 3-10 Installing the Rack-Mount Brackets so the Front of the Chassis Protrudes Out of the Rack

Step 3 Thread four M4 x 6-mm Phillips flathead screws through the rack-mount 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.

Step 5 If you plan to include the cable-management bracket in your front rack-mount configuration, align the bracket with the two right front-side holes.

Step 6 Thread two M3 x 6-mm Phillips panhead screws through the cable-management bracket and into the chassis, and tighten the screws.

This completes the procedure for installing the rack-mount brackets on the chassis for a front rack-mount configuration. Proceed to the "Installing the Chassis in the Rack" section.

Caution To prevent injury, review the safety precautions in Chapter 2 "Preparing the Cisco uBR7225VXR Router for Installation," before installing the universal broadband router in a rack.

Installing Rack-Mount Brackets in the Middle of the Chassis

To install the rack-mount brackets and cable-management bracket at the middle of the chassis for a telco-type rack-mount configuration, complete the following steps:

Step 1 Locate the threaded holes in the middle sides of the chassis.

Step 2 Align the first rack-mount bracket to the threaded holes in the right side of the chassis. See Figure 3-11.

Note There are five holes in each of the rack-mount brackets for the Cisco uBR7225VXR router. Four holes are used for front and middle mount, and five holes are used for rear mount.

Figure 3-11 Installing the Rack-Mount Brackets in the Middle of the Chassis for Telco-Type Racks

Step 3 Thread four M4 x 6-mm Phillips flathead screws through the rack-mount 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.

Step 5 If you plan to include the cable-management bracket in your telco-type rack-mount configuration, align the bracket with the right front-side holes.

Step 6 Thread two M3 x 6-mm Phillips panhead screws through the cable-management bracket and into the chassis, and tighten the screws.

This completes the procedure for installing the rack-mount brackets and cable-management bracket on the Cisco uBR7225VXR router. Proceed to the following section, "Installing the Chassis in the Rack."

Caution To prevent injury, review the safety precautions in Chapter 2 "Preparing the Cisco uBR7225VXR Router for Installation," before installing the Cisco uBR7225VXR router in a rack.

Installing the Chassis in the Rack

After installing the brackets on the chassis, mount the chassis by securing the rack-mount brackets to the posts or mounting strips in the rack using the slotted screws provided.

Note When installing the uBR7225VXR in a rack, ensure that paint is removed from the rack and an anti-oxidant is applied at the contact points to ensure reliable metal to metal contact.

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. Figure 3-2, Figure 3-3, Figure 3-4, and Figure 3-5 show typical installations in 19-inch, four-post and telco-type equipment racks.

Warning Two people are required to lift the chassis. Grasp the chassis underneath the lower edge and lift with both hands. To prevent injury, keep your back straight and lift with your legs, not your back. To prevent damage to the chassis and components, never attempt to lift the chassis with the handles on the power supplies or on the interface processors, or by the plastic panels on the front of the chassis. These handles were not designed to support the weight of the chassis. Statement 5

Warning

To prevent bodily injury when mounting or servicing this unit in a rack, you must take special precautions to ensure that the system remains stable. The following guidelines are provided to ensure your safety: Statement 1006 •This unit should be mounted at the bottom of the rack if it is the only unit in the rack. •When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the heaviest component at the bottom of the rack. •If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the unit in the rack.

To install the chassis in the rack, complete the following steps:

Step 1 On the chassis, ensure that all captive installation screws on the network processing engine, each cable interface line card, and each power supply are tightened.

Step 2 Make sure that your path to the rack is unobstructed. If the rack is on wheels, ensure that the brakes are engaged or that the rack is otherwise stabilized.

Caution Two people should perform Step 3 through Step 6.

Step 3 Position the chassis so that the front end is closest to you; then lift the chassis and move it to the rack. To prevent injury, avoid sudden twists or moves.

Step 4 Slide the chassis into the rack, pushing it back until the brackets (installed at the front or rear of the chassis) meet the mounting strips or posts on both sides of the equipment rack.

Note The rack-mount bracket must be placed behind the rack post or mounting strip in the rear installation configuration. (See Figure 3-2.)

Step 5 While keeping the brackets flush against the posts or mounting strips, position the router so that the holes in the brackets are aligned with those in the mounting strips.

Step 6 Insert the 10/32 x 3/8 slotted screws (two to a side) through the brackets and into the mounting strip (use the top and bottom bracket holes, shown in Figure 3-2, Figure 3-3, Figure 3-4, and Figure 3-5). Using a 7/16-inch flat-blade screwdriver, tighten all the screws.

This completes the procedure for installing the chassis in the rack. Proceed to the "Cabling" section to continue the installation.

Installing the Chassis in a Workbench or Tabletop Environment

The Cisco uBR7225VXR universal broadband router should already be in the area where you will install it, and your installation location should already be determined. If not, refer to the "Site Requirements" section.

When installing the router on a workbench or tabletop, ensure that the surface is clean and in a safe location and that you have considered the following:

•The Cisco uBR7225VXR router requires at least 3 inches (7.72 cm) of clearance at the inlet and exhaust vents (the right and left sides of the router).

•The Cisco uBR7225VXR router should be installed off the floor. (Dust that accumulates on the floor can be drawn into the interior of the router by the cooling fans. Excessive dust inside the router can cause overtemperature conditions and component failures.)

•There must be approximately 23.25 inches (59.06 cm) of clearance at the front, and 19 inches (48.3 cm) at the back of the Cisco uBR7225VXR router for installing and replacing field-replaceable units (FRUs), or accessing network cables or equipment.

•Make sure that blank cable interface line card and blank power supply filler plates are installed in empty slots.

•The Cisco uBR7225VXR router will receive adequate ventilation (it is being installed in an enclosed cabinet where ventilation is adequate).

•If you plan to install the cable-management bracket on the front of the chassis, set aside the cable-management bracket and the four M3 x 6-mm Phillips panhead screws.

Warning Do not stack the chassis on any other equipment. If the chassis falls, it can cause severe bodily injury and equipment damage. Statement 48

Complete the following steps to install the Cisco uBR7225VXR router on a workbench or tabletop:

Step 1 Remove any debris and dust from the tabletop or workbench, and the surrounding area. Also make sure that your path between the router and its new location is unobstructed.

Step 2 On the chassis, ensure that all captive installation screws on the network processing engine, cable interface line cards, and each power supply are tightened.

Warning Two people are required to lift the chassis. To prevent injury, keep your back straight and lift with your legs, not your back. Statement 164

Step 3 Add the five rubber feet supplied with the accessory kit to the base of the chassis. Five indented circles are provided on the base of the chassis to indicate the location to which the rubber feet can be added.

Step 4 Place the Cisco uBR7225VXR router on the tabletop or workbench.

Step 5 Ensure that there is the appropriate amount of space around the router.

If you want to install a cable-management bracket on the Cisco uBR7225VXR router, proceed to the following section, "Installing the Cable-Management Bracket on a Cisco uBR7225VXR Router in a Workbench or Tabletop Environment." Otherwise, proceed to the "Cabling" section.

Installing the Cable-Management Bracket on a Cisco uBR7225VXR Router in a Workbench or Tabletop Environment

To install the cable-management bracket on a Cisco uBR7225VXR universal broadband router installed on a workbench or tabletop, complete the following steps:

Step 1 Locate the threaded holes in the right front side of the chassis.

Step 2 Align the cable-management bracket with the two threaded holes on the front or rear side of the Cisco uBR7225VXR chassis. (See Figure 3-7.)

Step 3 Thread two M3 x 6-mm Phillips panhead screws through the bracket and into the chassis. Use a number 2 Phillips screwdriver to tighten the screws.

This completes the steps for installing the cable-management bracket on the Cisco uBR7225VXR router. Proceed to, "Cabling" section to continue the installation.

Cabling

This section provides information on connecting cable interface cards, auxiliary and console ports to your Cisco uBR7225VXR universal broadband router.

Warning This product is not intended to be directly connected to the Cable Distribution System. Additional regulatory compliance and legal requirements may apply for direct connection to the Cable Distribution System. This product may connect to the Cable Distribution System ONLY through a device that is approved for direct connection. Statement 1078

Warning The intra-building port(s) of the equipment or subassembly is suitable for connection to intra-building or unexposed wiring or cabling only. The intra-building port(s) of the equipment or subassembly MUST NOT metallically connect to interfaces that connect to the OSP or its wiring. These interfaces are designed for use as intra-building interfaces only (Type 2 or Type 4 ports as described in GR-1089-CORE, Issue 4) and require isolation from the exposed OSP cabling. The addition of Primary Protectors is not sufficient protection in order to connect these interfaces metallically to OSP wiring. Statement 7005

Caution To comply with GR-1089-Core intra-building lightning-immunity requirements, you must use shielded (screened) cable that is grounded at both ends.

Connecting Cable Interface Line Card Cables

The instructions for connecting the cables for each cable interface line card installed in the Cisco uBR7225VXR universal broadband router are contained in the cable interface line card installation document. Refer to the Cisco uBR7200 Series Interface Line Card Hardware Installation Guide at the following URL:

http://www.cisco.com/en/US/docs/interfaces_modules/cable/line_cards/installation/guide/mcxxfru.html

Console and Auxiliary Port Connection Equipment

The NPE contains the console and auxiliary ports. The console port is a RJ-45 receptacle for connecting a data terminal, which you use to configure the interfaces and bring up the Cisco uBR7255VXR router. The auxiliary port is a RJ-45 receptable for connecting a modem or the other DCE device (such as a channel service unit/data service unit [CSU/DSU]) to the router. (See Figure 3-12.)

Note Both the console and auxiliary ports are asynchronous ports; any devices connected to these ports must be capable of asynchronous transmission. (Asynchronous is the most common type of serial device; for example, most modems are asynchronous devices.)

Figure 3-12 Console and Auxiliary Port Connections

Before connecting a terminal to the console port, configure the terminal to match the Cisco uBR7225VXR router console port as follows:

•9600 baud

•8 data bits

•No parity

•1 stop bit (9600 8N1)

You need an RJ-45 console cable to connect the terminal to the console port. After you establish normal universal broadband router operation, you can disconnect the terminal.

You must supply your own interface cable between the auxiliary port and the equipment you are connecting. For console and auxiliary port pinouts, refer to the "Console Port Signals" section and the "Auxiliary Port Signals" section.

Console Port Signals

Both Data Set Ready (DSR) and Data Carrier Detect (DCD) signals are active when the system is running. The Request To Send (RTS) signal tracks the state of the Clear To Send (CTS) input. The console port does not support modem control or hardware flow control. Table 3-2 lists the signals used on the console port. The console port requires a straight-through EIA/TIA-232 cable.

Auxiliary Port Signals

Table 3-3 lists the signals used on the auxiliary port. The auxiliary port supports hardware flow control and modem control.

Protective Grounding

The building installation should provide a means for connection to the protective earth grounding. The equipment should be connected to that means.

Note The uBR7225VXR is intended for installation in a Common Bonding Network (CBN).

While installing the equipment, the service person should check whether the power source is adequately grounded. If it is not, the service person should arrange for the installation of a protective grounding conductor from the equipment to the protective grounding wire in the building. This conductor should consist of a minimum #6 American Wire Gauge (AWG) stranded copper wire. See Figure 3-13 to identify the ground lug location.

Figure 3-13 Cisco uBR7225VXR Ground Lug Location

Connecting Power

Following are the procedures for connecting AC-input power to your Cisco uBR7225VXR universal broadband router.

Warning High leakage current - earth connection essential before connecting to system power supply. Statement 342

Warning Care must be given to connecting units to the supply circuit so that wiring is not overloaded. Statement 1018

Warning Read the installation instructions before you connect the system to its power source. Statement 1004

Warning Before working on equipment that is connected to power lines, remove jewelry (including rings, necklaces, and watches). Metal objects will heat up when connected to power and ground and can cause serious burns or weld the metal object to the terminals. Statement 43

Warning This equipment is intended to be grounded to comply with emission and immunity requirements. Ensure that the switch functional ground lug is connected to earth ground during normal use. Statement 1064

Warning This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the absence of a suitably installed ground conductor. Contact the appropriate electrical inspection authority or an electrician if you are uncertain that suitable grounding is available. Statement 1024

Note Detailed instructions for handling and replacing the Cisco uBR7225VXR router power supplies are contained in the Cisco uBR7200 Series Universal Broadband Router AC-Input Power Supply Replacement Instructions at the following URL:
http://www.cisco.com/en/US/docs/cable/cmts/ubr7200/installation/4848pwra.html

Connecting to the AC-Input Power Supply

Warning The device is designed to work with TN power systems. Statement 19

Note A certified external Surge Protective Device (SPD) is used at the AC-input of the Cisco uBR7225VXR universal broadband router.

To connect to the AC-input power supply:

Step 1 At the rear of the Cisco uBR7225VXR universal broadband router, ensure that the power switch on the power supply is in the off (0) position.

Step 2 Plug in the power cable.

Figure 3-14 Connecting AC-Input Power

Step 3 Plug the AC power supply cable into the AC power source.

Step 4 Repeat Step 1 through Step 3 for the second power supply (if present).

This completes the procedure for connecting AC-input power. Proceed to the "Powering On the Cisco uBR7225VXR Router" section.

Powering On the Cisco uBR7225VXR Router

After installing your Cisco uBR7225VXR universal broadband router and connecting cables, power on the universal broadband router as follows:

Step 1 Check for the following:

•Each cable interface line card is inserted in its slot and its captive installation screws are tightened.

•The network processing engine is inserted in to its slot and the captive installation screws are tightened.

Note If the cable interface line card or the network processing engine is not properly seated or not fully locked into place, the Cisco uBR7225VXR router might enter a continuous restart loop. Make sure that the boards are seated and locked into position.

•Hybrid fiber-coaxial (HFC) network coaxial cable is connected to the cable interface line cards.

•A CompactFlash Disk is installed in a CompactFlash Disk slot in the front panel of the NPE-G1 or NPE-G2. Use only authorized Cisco provided CompactFlash Disks.

•Each AC-input power cable is connected.

•The console terminal is turned on.

Step 2 At the rear of the Cisco uBR7225VXR router, place the power switch on the power supply in the on (|) position. Repeat this step if a second power supply is installed. The power supply OK LEDs 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 uBR7225VXR router was recently switched off, it might take up to 90 seconds for the power supply to restart and the fans to start operating.

Note To facilitate headend installation, a Cisco uBR7225VXR universal broadband router equipped with at least one cable interface line card generates a downstream IF carrier when it starts running.

The downstream IF carrier will be present if a cable interface 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 uBR7225VXR router is not in ROMMON mode. The amplitude and shape of the downstream IF carrier will not change after the Cisco uBR7225VXR router is configured, unless a non-DOCSIS data rate is configured.

Step 4 Observe the initialization process. When the system boot is complete (a few seconds), the network processing engine begins to initialize the cable interface line cards. During this initialization, the LEDs on each cable interface line card behave differently (most flash on and off). The enabled LED on each cable interface line card goes on when initialization is complete, and the console screen displays a script and system banner similar to the following:

Cisco IOS Software, 7200 Software (UBR7200-K9PU2-M), Version 12.2(33)SCA, RELEASE SOFTWARE 
(fc1)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2008 by Cisco Systems, Inc.

Compiled Thu 14-Feb-08 13:58 by prod_rel_team

Configuring the Interfaces

When you start up the Cisco uBR7225VXR router for the first time, the system automatically enters the setup facility (also called the system configuration dialog), which determines which cable interface cards are installed. The setup facility prompts you for configuration information.

On the console terminal, after the system displays the system banner and hardware configuration, the following System Configuration Dialog prompt appears:

         --- System Configuration Dialog ---

At any point you may enter a questions mark `?' for help.

Use ctrl-c to abort configuration dialof at any prompt.

Default settings are in square brackets `[]'.

continue with configuration dialog? [yes]:

You can proceed with the setup facility or exit from the setup facility, using the command interface to configure global (system-wide) and interface-specific parameters.

Caution The setup facility currently excludes cable-specific configuration commands. Upstream ports, therefore, have a default state of "shutdown" after the setup facility is run. You must configure upstream parameters. For additional information, refer to the Cisco uBR7200 Series Software Configuration Guide at the following URL:

http://www.cisco.com/en/US/docs/cable/cmts/ubr7200/configuration/guide/cr72scg.html

You do not have to configure the interfaces immediately; however, you cannot enable the interfaces or connect them to any networks until you have configured them.

Many of the cable interface line card LEDs do not come on until you have configured the interfaces. To verify correct operation of each interface, complete the first-time startup procedures and configuration, then refer to the document for each cable interface line card for LED descriptions and to check the status of the interfaces.

Your Cisco uBR7225VXR chassis installation is complete. To set up your cable network headend, proceed to Chapter 4 "Connecting the Cisco uBR7225VXR Router to the Cable Headend." To begin configuring your Cisco uBR7225VXR router, see the Cisco uBR7200 Series Software Configuration Guide at the following URL:

http://www.cisco.com/en/US/docs/cable/cmts/ubr7200/configuration/guide/cr72scg.html