Cisco uBR7246VXR User Manual
QUICK START GUIDE
Cisco uBR7246VXR Universal Broadband Router
INCLUDING LICENSE AND WARRANTY
1 Cisco One-Year Limited Hardware Warranty Terms
2 Overview
3 Site Preparation
4 Installing the Chassis
5 Connecting the Chassis to Power
6 Powering on the Cisco uBR7246VXR Router
7 Troubleshooting the Installation
8 Related Documentation
9 Obtaining Documentation and Submitting a Service Request
1 Cisco One-Year Limited Hardware Warranty Terms
There are special terms applicable to your hardware warranty and various services that you can use during the warranty period.
Your formal Warranty Statement, including the warranties and license agreements applicable to Cisco software, is available on
Cisco.com. Follow these steps to access and download the Cisco Information Packet and your warranty and license agreements
from Cisco.com.
1. Launch your browser, and go to this URL:
http://www.cisco.com/en/US/products/prod_warranties_listing.html
The Warranties and License Agreements page appears.
2. To r e ad t he Cisco Information Packet, follow these steps:
a. Click the Information Packet Number field, and make sure that the part number 78-5235-03A0 is highlighted.
b. Select the language in which you would like to read the document.
c. Click Go.
d. The Cisco Limited Warranty and Software License page from the Information Packet appears.
e. Read the document online, or click the PDF icon to download and print the document in Adobe Portable Document
Format (PDF).
Note You must have Adobe Acrobat Reader to view and print PDF files. You can download the reader from Adobe’s
website: http://www.adobe.com
3. To read translated and localized warranty information about your product, follow these steps:
a. Enter this part number in the Warranty Document Number field:
78-10747-01C0
b. Select the language in which you would like to view the document.
c. Click Go. The Cisco warranty page appears.
d. Read the document online, or click the PDF icon to download and print the document in Adobe Portable Document
Format (PDF).
You can also contact the Cisco service and support website for assistance:
http://www.cisco.com/en/US/support/
Duration of Hardware Warranty
One (1) Year
Replacement, Repair, or Refund Policy for Hardware
Cisco or its service center will use commercially reasonable efforts to ship a replacement part within ten (10) working days after
receipt of a Return Materials Authorization (RMA) request. Actual delivery times can vary, depending on the customer location.
Cisco reserves the right to refund the purchase price as its exclusive warranty remedy.
To Receive a Return Materials Authorization (RMA) Number
Contact the company from whom you purchased the product. If you purchased the product directly from Cisco, contact your
Cisco Sales and Service Representative.
Complete the information below, and keep it for reference.
Company product purchased from
Company telephone number
Product model number
Product serial number
Maintenance contract number
2
2 Overview
The Cisco uBR7246VXR universal broadband router is used in Cisco Cable Modem Termination System (CMTS) solutions. The
router allows high-speed data services to be packaged similar to basic cable television service or video fare.
The Cisco uBR7246VXR router:
• Supports data and packetized voice connectivity over a bidirectional cable television and IP backbone network.
• Supports high-speed Internet access, IP telephony, and Virtual Private Network (VPN) applications.
• PacketCable 1.0, Data-over-Cable Service Interface Specification (DOCSIS) 1.1 and EuroDOCSIS 1.1 qualified.
• Supports DOCSIS- or EuroDOCSIS-based cable interfaces and cable modems (or set-top boxes with integrated DOCSIS or
EuroDOCSIS cable modems).
• 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). However, the I/O controller, network processing engine (NPE), and clock card
do not support OIR. You must power down the chassis before removing these components.
• Is fully radio frequency (RF) hardened to ensure virtually noise-free transmission.
• Supports N + 1 redundancy solutions using the Cisco RF switch.
• Supports 1+1 interchassis redundancy (does not require the RF switch).
The Cisco uBR7246VXR routers may be installed on a tabletop or rack-mounted. A rack-mount kit ships from the factory with
each router. The rack-mount kit includes the hardware used to mount the router in a standard 19-inch equipment rack or
relay-type rack.
Warning
For translations of the warnings used in this document, see the Cisco uBR7200 Series Regulatory Compliance and Safety
Information document that comes with this router. Reference the translations by statement number (example: Statement 1020).
Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Statement 1030
Cisco uBR7246VXR Components
The Cisco uBR7246VXR universal broadband router components include:
• Cable interface line cards (also called line cards) that interface to the cable television network.
• Port adapters that connect to the IP backbone and external networks.
• A fan tray, enclosing internal fans that draw cooling air into the chassis to maintain an acceptable operating temperature.
• AC or DC power supplies–the Cisco uBR7246VXR supports an optional redundant power supply.
• A Cisco cable clock card that allows you to lock onto and propagate a T1 clock signal throughout the router midplane.
• One network processing engine (NPE) that performs system management functions for the chassis.
• An I/O controller that shares the system memory functions and the environmental monitoring functions with the network
processing engine.
Note The I/O controller is not required if you are using the Cisco uBR7200-NPE-G1 network processing engine.
For specific instructions to install, remove, or replace system components, refer to the Configuration Notes directory at the
following URL:
http://www.cisco.com/en/US/products/hw/cable/ps2217/tsd_products_support_configure.html
3
Figure 1 Front and Rear Chassis Views
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Fan tray handle
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Captive installation screws (line cards)
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Cable interface line cards
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Port adapters
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I/O controller
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Console port
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1. AC power supplies are shown in this illustration. DC power supplies are also available.
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Auxiliary port
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Optional Fast Ethernet port (M11 and RJ-45 receptacles)
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PCMCIA slots
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AC plug
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Power switch
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Power supply handle
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AC-input power supply
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Network processing engine (NPE)
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103555
Card Slot and Logical 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 installed or removed. However, when you move a port adapter or a line card to a different slot,
the logical interface number changes to reflect the new slot number.
Figure 2 Slot Numbers and Locations
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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
Warning
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.
This product requires short-circuit (overcurrent) protection, to be provided as part of the building installation.
Install only in accordance with national and local wiring regulations.
Statement 1017
Statement 1045
Temperature and Humidity Requirements
Table 1 lists the nominal operating and nonoperating environment requirements. Any measurements that approach the
minimum or maximum of a range indicate a potential problem.
Table 1 Operating and Nonoperating Environments
Specification Minimum Maximum
Temperature, ambient operating
Temperature, ambient nonoperating and storage
Humidity, ambient (nonconducting) operating 10% 90%
Humidity, ambient (noncondensing) nonoperating and storage 5% 95%
Altitude, operating and nonoperating –197 ft (–60 m) 13,123 ft (4000 m)
Vibration, operating
Vibration, nonoperating
32° F (0° C)
-4° F (-20° C)
— 5 to 200 Hz, 0.5 g (1 octet/min.)
— 5 to 200 Hz, 1 g (1 octet/min.)
104° F (40° C)
149° F (65° C)
200 to 500 Hz, 2 g (1 octet/min.)
Power Guidelines
Follow these precautions and recommendations when planning power connections to the Cisco uBR7246VXR router:
• Check the power at your site before installation and periodically after installation to ensure that you are receiving clean
power. Install a power conditioner if necessary.
• Provide proper grounding.
• Make sure that the frame ground is tied to a single building ground.
• Use a 6-AWG, copper ground conductor (minimum requirement) when attaching the chassis ground to a headend or other
interior ground system.
Warning
A readily accessible two-poled disconnect device must be incorporated in the fixed wiring.
Statement 1022
5
Power Connection Guidelines for DC-Powered Systems
The DC-input power supply allows the Cisco uBR7246VXR router to operate on either -48 or -60 VDC systems.
Warning
The Cisco uBR7246VXR router (using DC power supplies) is not shipped with wiring to connect to a DC power source. You
must provide input, return, and earthing (grounding) wiring at the site, and install and protect the wiring in accordance with
local and national wiring regulations.
Connect the unit only to DC power source that complies with the safety extra-low voltage (SELV) requirements in
IEC 60950 based safety standards.
Statement 1033
Cabling Guidelines
When planning the location of a new system, keep in mind signal type, signal speed, and transmission medium, as well as
distance limitations for signaling, EMI, and connector compatibility. Use this information as a guideline in planning your
network connections prior to installing the Cisco uBR7246VXR router.
Ethernet and Fast Ethernet Connections
The maximum distances for Ethernet and Fast Ethernet network segments and connections depend on the type of transmission
cable being used. See Table 2 for the maximum transmission distances between stations.
Table 2 Ethernet and Fast Ethernet Maximum Transmission Distances
Transceiver Speed Cable Type Transmission Mode Maximum Distance Between Stations
10 Mbps Category 3 Full duplex and half duplex 328 ft (100 m)
10 Mbps Multimode (MMF) Full duplex and half duplex 1.2 mi (2 km)
100 Mbps Category 5
Category 5e
100 Mbps Category 6 Full duplex and half duplex 328 ft (100 m)
100 Mbps MMF Half
100 Mbps Singlemode (SMF) Half
Full duplex and half duplex 328 ft (100 m)
1312 ft (400 m)
Full
Full
1.2 mi (2 km)
1312 ft (400 m)
6.2 mi (10 km)
For details about Ethernet 10BaseT and 100BaseTX cables, refer to the Ethernet 100BaseTX and 10BaseT Cables: Guidelines
and Specifications document at the following URL:
http://www.cisco.com/en/US/products/hw/routers/ps133/products_tech_note09186a00801f5d9e.shtml
Coaxial Cable Connections
Keep in mind the following information when you are setting up and cabling your system.
• The length of the cable determines the amount of signal loss.
• Headend-grade cable (quad-shield 59-series minimum) is recommended.
• Do not bend the coaxial cable tighter than the cable manufacturer's specified minimum bend radius.
• Do not tighten cable connections (F connectors) more then 10 to 15 in-lbs (1.73 to 2.31 nm).
• To prevent connection problems, always use the same size coaxial cable. For example, going from a 6-series cable to a
59-series cable may cause reliability issues (intermittent contact) in the headend environment.
6
4 Installing the Chassis
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.
• 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 comes with the chassis.
• 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 an open or relay racks are bolted to the floor.
• When mounting the chassis in 4-post or relay racks, use all the screws and brackets that are provided.
• For 23-inch racks, order optional mounting brackets from third-party vendors.
Workbench and Tabletop Installation Guidelines
When installing the router on a workbench or tabletop, check the following:
• There is at least 3 inches (7.72 cm) of clearance at the inlet and exhaust vents (the right and left sides of the router).
• There is approximately 23.25 inches (59.06 cm) of clearance at the front, and 19 inches (48.3 cm) at the back of the router
for installing and replacing field-replaceable units (FRUs), or accessing network cables or equipment.
• There is adequate ventilation (it is being installed in an enclosed cabinet where ventilation is adequate).
• Blank panels are installed in any slot that does not have a component.
• The cable-management bracket and four M4 x 6-mm Phillips panhead screws are set aside (if required).
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
Installation Tools and Equipment
The tools and equipment listed below are recommended as the minimum necessary to install the Cisco uBR7246VXR router.
Other equipment may include test equipment to check electronic and optical signal levels, power levels, and communications
links.
• Rack-mounting kit (includes brackets and screws)
• Number 2 Phillips screwdriver
• 3/16-inch flat-blade screwdriver
• 1/4-inch flat-blade screwdriver
• 8-mm wrench or nut driver, or adjustable wrench
• 7-mm wrench or nut driver, or adjustable wrench
• DC-input cable—14 AWG (2.08 mm
• AC-input cable—18 AWG cable with a 3-lead IEC-320 receptacle on the power supply end, and a country-dependent plug
on the other end
• Antistatic mat or antistatic foam and electrostatic discharge (ESD) grounding strap or the disposable ESD strap
• Wire stripper and crimping tool. (The accessory kit comes with ground lugs and M5 screws with captive, locking washers.)
• Wire—6 AWG (16 mm), provided by the customer
2
) cable with a minimum of three conductors rated for at least 140° F (60 ° C)
7
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 required components and documentation.
Step 1 Using the packing list as a guide, verify that you have received everything that is listed, including the following:
a. System hardware documentation and software documentation (if ordered).
b. Optional equipment that you ordered, such as transceivers (GBICs), flash cards, cables, or special connectors.
Step 2 Check that all equipment you ordered is installed in the chassis.
Step 3 Ensure that the system configuration matches the packing list.
Attaching the Rack-Mount Brackets
Before installing the chassis in the rack, you must install rack-mount brackets on each side of the front, middle, or rear of the
chassis. If you are rack-mounting the chassis from the front, you cannot use the cable-management bracket. If you are
rack-mounting the chassis at the rear or middle of the chassis, both rack-mount brackets and the cable-management bracket
must be installed on the chassis before the chassis is installed in the rack.
Figure 3 Rack-Mount Bracket Options
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Rack-mount
bracket
2
Rack-mount bracket
3
Rack-mount
bracket
4
103554
Rack-mount bracket
Installed in 4-post rack—rear installation
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Installed in 4-post rack—flush front installation
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Installed in 4-post rack—protruding front installation
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Installed in open or relay-type tack
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