Installation guide

Contents
iv
Cisco uBR7100 Series Universal Broadband Router Software Configuration Guide
OL-2238-03
Typical Routing Configuration For High Speed Internet Access 4-2
EuroDOCSIS Operation 4-6
Transparent Bridging Configuration 4-8
Integrated Routing and Bridging Configuration 4-10
Baseline Privacy Interface 4-13
CHAPTER 5 Troubleshooting the System 5-1
Using a Cable Modem at the Headend to Verify Downstream Signals 5-1
Managing Cable Modems on the HFC Network 5-2
Configuring Sync Message Interval 5-2
Activating Cable Modem Authentication 5-3
Activating Cable Modem Upstream Address Verification 5-3
Configuring Dynamic Contention Algorithms (Cable Insertion Interval, Range, and Data
Backoffs)
5-4
Configuring the Dynamic Map Advance Algorithm 5-5
Configuring Per Modem Filters 5-6
Configuring the Maximum Number of Hosts Attached to a Cable Modem 5-7
Configuring Cable Modem Registration Timeout 5-8
Clearing Cable Modem Reset 5-8
Clearing Cable Modem Counters 5-9
Configuring Traffic Shaping 5-9
Configuring Spectrum Management 5-11
Polling Cable Modems 5-15
Understanding Show Command Responses 5-17
General show Commands 5-17
Troubleshooting Cable Flap Lists 5-31
Displaying the Flap List 5-34
Troubleshooting with the Flap List 5-37
Setting Cable Flap List Aging 5-38
Setting Cable Flap List Insertion Time 5-39
Setting Cable Flap List Power Adjustment Threshold 5-39
Setting Cable Flap List Miss Threshold 5-40
Setting Cable Flap List Size 5-40
Clearing Cable Flap List 5-41
Customizing Other Flap List Values and Related Commands 5-41
Performing Amplitude Averaging 5-42
Enabling or Disabling Power Adjustment 5-43
Setting Downstream Test Signals 5-44