Cisco cBR 8 User Manual

Configuring Flap List Operation Using the CLI (optional)
To configure the operation of the flap list, use the following procedure, beginning in EXEC mode. This
procedure is optional, unless you want to change the default values for the flap list.
DETAILED STEPS
PurposeCommand or Action
Enables privileged EXEC mode. Enter your password if prompted.enable
Example:
Router> enable
Step 1
Enters global configuration mode.configure terminal
Example:
Router# configure terminal
Step 2
(Optional) Specifies the minimum insertion (registration) time interval
in seconds. Any cable modem that makes a registration request more
frequently than this period of time is placed in the flap list.
cable flap-list insertion-time seconds
Example:
Router(config)# cable flap-list
Step 3
insertion-time 3600
(Optional) Specifies the minimum power adjustment, in dB, that
constitutes a flap-list event.
cable flap-list power-adjust threshold db
Example:
Router(config)# cable flap-list
Step 4
A threshold of less than 2 dB can cause excessive flap-list
event recording. If you need to change this parameter from its
default, Cisco recommends setting it to 3 dB or higher.
Note
power-adjust threshold 5
(Optional) Specifies the number of MAC-layer station maintenance
(keepalive) messages that can be missed in succession before the CMTS
places the cable modem in the flap list.
cable flap-list miss-threshold misses
Example:
Router(config)# cable flap-list
Step 5
A high miss rate indicates potential plant problems, such as
intermittent upstream problems, fiber laser clipping, or
common-path distortion.
Note
miss-threshold 10
(Optional) Specifies how long, in minutes, the Cisco CMTS should
keep information for cable modems in the flap list.
cable flap-list aging minutes
Example:
Router(config)# cable flap-list aging
Step 6
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Cisco cBR Series Converged Broadband Routers Troubleshooting and Network Management Configuration
Guide for Cisco IOS XE Fuji 16.8.x
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Flap List Troubleshooting
Configuring Flap List Operation Using the CLI (optional)

Cisco cBR 8 Specifications

General

Product Series	cBR Series
Model	cBR-8
Type	Converged Broadband Router
DOCSIS Version	DOCSIS 3.1
Number of Upstream Channels	8
Supported Downstream Modulation	QAM
Supported Upstream Modulation	QAM
Operating Temperature	32 to 104°F (0 to 40°C)
Storage Temperature	-40 to 70 °C
Humidity	5% to 95% (non-condensing)
Power Supply	Dual redundant AC or DC power supplies

Summary

Call Home

How to Configure Call Home

Steps to enable and configure the Call Home feature, including basic settings.

Configuring Destination Profiles

Define and manage destination profiles for Call Home alert notifications.

Verifying the Call Home Configuration

Configuration Example for Call Home

SNMP Support over VPNs—Context-Based Access Control

How to Configure SNMP Support over VPNs—Context-Based Access Control

Steps to configure SNMP context and associate it with a VPN for secure access.

Configuring an SNMP Context and Associating the SNMP Context with a VPN

Configuration Examples for SNMP Support over VPNs—Context-Based Access Control

SNMP Engine Enhancement

How to Configure SNMP Cache Engine Enhancement

Steps to enable or disable SNMP Cache Engine Enhancement using CLI commands.

Verifying the SNMP Cache Engine Status

Onboard Failure Logging

Configuring OBFL

Procedure to enable or disable OBFL on a specified hardware module using CLI.

Configuration and Verification Examples

Control Point Discovery

How to Configure CPD

Steps to enable CPD functionality and configure control relationship identifiers.

Enabling CPD Functionality

Enabling NLS Functionality

IPDR Streaming Protocol

How to Configure IPDR Streaming Protocol

Describes configuration tasks for the IPDR streaming protocol on CMTS platforms.

Configuring the IPDR Session

Configuring the IPDR Collector

Configuration Examples for IPDR Streaming Protocol

Usage-Based Billing (SAMIS)

How to Configure the Usage-based Billing Feature

Describes tasks required to implement the Usage-based Billing feature.

Enabling Usage-based Billing Feature File Mode Using CLI Commands

Enabling Usage-based Billing Feature Streaming Mode Using CLI Commands

Retrieving Records from a Cisco CMTS in File Mode

Flap List Troubleshooting

How to Configure Flap List Troubleshooting

Steps to configure flap list operation using CLI or SNMP commands.

Configuring Flap List Operation Using the CLI (optional)

Displaying the Flap List Using the show cable flap-list Command

Maximum CPE and Host Parameters

MAX CPE

Controls the number of CPE devices accessing the network per cable modem.

MAX Host

Specifies the maximum number of CPE devices allowed network access by the CMTS.

MAX CPE IP

How to Configure the MAX CPE and Host Parameters

Procedures to configure maximum permitted CPE devices recognized by the CMTS.

Online Offline Diagnostics

How to Configure Online Offline Diagnostics

Steps to load the field diagnostic image and start field diagnostic tests.

Configuring Field Diagnostic Test

Configuration Example for Online Offline Diagnostics