Cisco cBR Series Manual

Cisco Converged Broadband Routers Hardware Installation Guide
First Published: 2015-03-25
Last Modified: 2019-07-31
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CONTENTS
What is a Cisco cBR Series Converged Broadband Router 1
CHAPTER 1
Introduction 1
Functional Overview 2
Upstream Data Path 2
Downstream Data Path 3
Cisco cBR-8 Converged Broadband Router 4
Physical Description 6
Slot Numbering—Physical and Logical 8
Field Replaceable Units 12
Supervisor 15
Cisco cBR-8 Converged Cable Access Router Supervisor 160G 15
Cisco cBR-8 Converged Cable Access Router Supervisor 250G 20
Interface Cards 25
DOCSIS MAC/PHY Cards 26
DOCSIS MAC Cards 30
Power System 33
Fan Module 39
Cooling System of the Cisco cBR Chassis 40
Air Filter 41
Cisco IOS-XE Software 41
NEBS Level 3 Compliance 42
How and What to Order 42
Prepare to Install 47
CHAPTER 2
General Safety Guidelines 47
Safety Instructions 48
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Warning Definition 48
Preventing Electrostatic Discharge Damage 49
Plant Wiring Guidelines 49
Electrical Equipment Guidelines 50
Unpacking and Verifying Shipping Contents 50
Chassis-Lifting Guidelines 51
General Rack Installation Guidelines 51
Cabling Guidelines 53
Installing the Cisco cBR Chassis 55
CHAPTER 3
Installation Methods 55
Verifying Rack Dimensions 55
Installing Chassis Installation Brackets 56
Attaching the Chassis Rack-Mount Brackets 57
Installing the Chassis Installation Handle (Optional) 59
Installing the Cisco cBR-8 in a Rack 60
Installing the Cisco cBR in a Four-Post Rack 61
Installing the Cisco cBR in a Two-Post Rack 63
Attaching the Cable-Management Brackets 65
Attaching the Fiber or Cable Routing Guide on Chassis 66
Attaching a Chassis Ground Connection 70
Installing the Fan Module in Cisco cBR 73
CHAPTER 4
Installing the Fan Module in the cBR Chassis 73
Installing the Power System in the Cisco cBR Chassis 77
CHAPTER 5
Installing the Power Cassette Module in the Cisco cBR Chassis 77
Installing the FPEM in the Cisco cBR Chassis 79
Installing the Power Module in the Cisco cBR Chassis 81
Connecting Power to the AC-Powered Cisco cBR Chassis 84
Connecting Power to the DC-Powered Cisco cBR Chassis 85
Installing the Supervisor in the Cisco cBR Chassis 89
CHAPTER 6
Installing the Supervisor 160G 89
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Contents

Installing the Supervisor PIC in the Cisco cBR Chassis 89
Installing the Supervisor PIC Cable Management Bracket 91
Installing the SFP+ Modules in the Supervisor PIC 92
Installing the Supervisor Card in the Cisco cBR Chassis 94
Using the SFP+ Ports on the Supervisor PIC 97
Using the DTI Ports on the Supervisor PIC 98
Using the NME Ports on the Supervisor PIC 99
Using the Console Port on the Supervisor PIC 99
Using the Auxiliary Port on the Supervisor PIC 101
Cable Management for the Supervisor PIC in the Cisco cBR Chassis 102
Using the USB Port on the Supervisor Card 106
Using the Console Port on the Supervisor Card 107
Installing the Supervisor 250G 109
Installing the Supervisor PIC in the Cisco cBR Chassis 109
Installing the Supervisor PIC Cable Management Bracket 111
Installing the QSFP+ or QSFP28 Transceiver Modules in the Supervisor PIC 112
Installing the Supervisor Card in the Cisco cBR Chassis 115
Attaching the Optical Network Cable 119
Using the DTI Ports on the Supervisor PIC 120
Using the NME Ports on the Supervisor PIC 121
Using the Console Port on the Supervisor PIC 121
Using the Auxiliary Port on the Supervisor PIC 123
Cable Management for the Supervisor PIC in the Cisco cBR Chassis 124
Using the USB Port on the Supervisor Card 129
Using the Console Port on the Supervisor Card 130
Swap Supervisor 160G to Supervisor 250G 10GE Mode 132
Backup the Configuration and IOS Code 132
Swap the Supervisor 133
Upgrade Supervisor 160G to Supervisor 250G 100GE Mode 135
Backup the Configuration and IOS Code 135
Swap the Supervisor 137
Installing the Interface Line and PIC Cards 141
CHAPTER 7
Installing the DOCSIS MAC/PHY Interface and PIC Card 141
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Installing RF PIC in the Cisco cBR Chassis 141
Using UCH.8 Connectors on the RF Through PIC 144
Installing the DOCSIS MAC/PHY Interface Line Card in the Cisco cBR Chassis 145
Installing the DOCSIS MAC Interface and PIC Card 150
Installing Digital PIC in the Cisco cBR Chassis 150
Installing the DOCSIS MAC Interface Line Card in the Cisco cBR Chassis 152
Powering Up the Cisco cBR Chassis 159
CHAPTER 8
Powering Up the Cisco cBR 159
Monitoring the Cisco cBR Chassis 161
CHAPTER 9
Monitoring the Cisco cBR Chassis Using CLI 161
Monitoring the Fan Module in Cisco cBR 169
CHAPTER 10
Monitoring the Fan Module on the Cisco cBR using LEDs 169
Monitoring the Fan Module using CLI in the Cisco cBR Chassis 170
Monitoring the Power System in the Cisco cBR Chassis 171
CHAPTER 11
Monitoring the Power System in the Cisco cBR Chassis Using LEDs 171
Monitoring the Power System in the Cisco cBR Chassis Using CLI 173
Monitoring the Supervisor in the Cisco cBR Chassis 175
CHAPTER 12
Monitoring the Supervisor 160G in the Cisco cBR Chassis Using LEDs 176
Monitoring the Supervisor 250G in the Cisco cBR Chassis Using LEDs 179
Monitoring the Interface Card in the Cisco cBR Chassis 183
CHAPTER 13
Monitoring the Interface Line Cards in the Cisco cBR Chassis using LEDs 183
Monitoring the Digital Physical Interface Cards in the Cisco cBR Chassis using LEDs 184
Maintaining the Cisco cBR Chassis 185
CHAPTER 14
Powering Down the Cisco cBR Chassis 185
Unmounting the Cisco cBR Chassis 185
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Maintaining the Fan Module for Cisco cBR 187
CHAPTER 15
Removing the Fan Module from the Cisco cBR Chassis 187
Maintaining the Power System in the Cisco cBR Chassis 189
CHAPTER 16
Removing the AC Power Connections from the Cisco cBR Chassis 189
Removing the DC Power Connections from the Cisco cBR Chassis 190
Removing the Power Module from the Cisco cBR Chassis 191
Removing the FPEM from the Cisco cBR Chassis 193
Removing the Power Cassette Module from the Cisco cBR Chassis 195
Maintaining the Supervisor in the Cisco cBR Chassis 199
CHAPTER 17
Maintaining the Supervisor 160G 199
Removing the Supervisor Card from the Cisco cBR Chassis 199
Removing the SFP+ Module from the Supervisor PIC 202
Removing the Supervisor PIC Cable Management Bracket 203
Removing the Supervisor PIC from the Cisco cBR Chassis 204
Maintaining the Supervisor 250G 207
Removing the Supervisor Card from the Cisco cBR Chassis 207
Removing the QSFP+ or QSFP28 Transceiver Module from the Supervisor PIC 210
Removing the Supervisor PIC Cable Management Bracket 211
Removing the Supervisor PIC from the Cisco cBR Chassis 212
Maintaining the Interface Cards in the Cisco cBR Chassis 215
CHAPTER 18
Maintaining the DOCSIS MAC/PHY Interface and PIC Card 215
Removing the DOCSIS MAC/PHY Interface Line Card from the Cisco cBR Chassis 215
Removing the UCH.8 Connectors from the RF PIC 217
Removing the RF PIC from the Cisco cBR Chassis 218
Removing the cLGA Connector from an Interface Line Card 219
Installing the cLGA Connector on the Line Card PCB 222
Maintaining the DOCSIS MAC Interface and PIC Card 223
Removing the DOCSIS MAC Interface Line Card from the Cisco cBR Chassis 223
Removing the Digital PIC from the Cisco cBR Chassis 225
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Maintaining the PHY Modules in the Cisco cBR Chassis 229
CHAPTER 19
Removing the Downstream PHY Module in the Interface Line Card 229
Installing the Downstream PHY Module in the Interface Line Card 231
Removing the Upstream PHY Module in the Interface Line Card 232
Installing the Upstream PHY Module in the Interface Line Card 234
Maintaining the Air Filter in the Cisco cBR Chassis 235
CHAPTER 20
Removing the Air Filter on a Card 235
Installing the Air Filter on a Card 237
Online Insertion and Removal of Cards on the Cisco cBR 249
CHAPTER 21
About OIR 249
What Does an OIR Do? 249
Guidelines for Performing an OIR 250
OIR on Cisco cBR 250
How Do I Perform an OIR? 250
Verifying Status after an OIR 251
Troubleshooting the Cisco cBR 255
CHAPTER 22
Troubleshooting the Fan Module in the Cisco cBR 255
Troubleshooting the Power System in the Cisco cBR 257
Troubleshooting the Interface Cards in Cisco cBR Chassis 257
General Troubleshooting 259
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Contents

CHAPTER 1
What is a Cisco cBR Series Converged
Broadband Router
•Introduction, on page 1
•Functional Overview, on page 2
•Cisco cBR-8 Converged Broadband Router, on page 4
•Supervisor, on page 15
•Interface Cards, on page 25
•Power System, on page 33
•Fan Module, on page 39
•Air Filter, on page 41
•Cisco IOS-XE Software, on page 41
•NEBS Level 3 Compliance, on page 42
•How and What to Order, on page 42
Introduction
The Cisco cBR Series Converged Broadband Router (Cisco cBR) is an Edge Services platform designed for
cable MSOs. It supports the RF and Data-over-Cable Service Interface Specifications (DOCSIS) interfaces
of a Cable Modem Termination System (CMTS) and digital optical interfaces such as Passive Optical Networks
(PON) and point-to-point Ten Gigabit Ethernet.
The Cisco cBR supports video including both traditional MPEG video and Video over IP over DOCSIS
(VDOC). The advantage of Cisco cBR is the ability to support MPEG video and VDOC in the same platform
allowing transition from MPEG to VDOC. The Cisco cBR is a single device that manages the entire RF
spectrum of the cable plant.
The Cisco cBR provides high-speed data, broadband, and IP telephony services to residential and commercial
subscribers using cable modems or digital set-top boxes (STBs). It supports data and digitized voice connectivity
over a bidirectional cable television and IP backbone network. And uses advanced quality of service (QoS)
techniques to ensure that real-time traffic such as voice can be reliably delivered, while still transmitting other
traffic on a best-effort basis.
The Cisco cBR concentrates traffic from two-way DOCSIS-based cable modems and STBs that is transmitted
over the coaxial cable television (CATV) network, and presents that traffic to local and remote Internet Protocol
(IP) hosts over its high-speed network uplink interfaces.
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The Cisco cBR runs on the Cisco IOS-XE networking software and supports the most advanced networking
and routing options.
Functional Overview
The Cisco cBR provides the following network solutions:
• High speed data access over DOCSIS
• Video over DOCSIS
• Voice services over DOCSIS
• Business services over DOCSIS
• MPEG transport-based video distribution
• Videoscape management system integration
• Data plane optimization to carry ABR traffic including monitoring of quality of service
• Assistance with the support of legacy devices in a Videoscape environment
• Video cache integration
The path from the Cisco CMTS to the cable modem or STB is the downstream, which carries the majority of
traffic over the cable interface.
The path from the cable modem or STB to the Cisco CMTS is the upstream, and it carries approximately 10
percent of the traffic that is sent over the downstream.
A large number of users can be assigned to the same downstream, and for efficient use of bandwidth, those
users can be split among several different upstream.
The following sections contain information about:
Upstream Data Path
The following example describes the upstream data path.
1. A request for service is generated by a subscriber. The modem transmits the request as a series of packets
to the Cisco CMTS on the upstream.
2. The cable line card receives the packets on its upstream interface and forwards them to its onboard
processor.
3. The line card processor verifies the header check sequence (HCS), frame check sequence (FCS), and
system identification number (SID), processes all fields in the DOCSIS MAC header, and then removes
the header.
1. The line card examines and processes the extended headers (Request, Acknowledgment, Privacy,
PHSs and Unsolicited Grand Synchronization header elements). If Baseline Privacy Interface (BPI)
is used, the processor also decrypts the Privacy EH frames using the appropriate key.
2. Bandwidth requests, acknowledgment (ACK) requests, and unsolicited grant syncs are reformatted
and passed to the request ring of the Cisco cable line card.
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What is a Cisco cBR Series Converged Broadband Router
Functional Overview