Cisco Systems UBR900 User Manual

 Configuring the Cisco uBR900 Series Cable Access Routers 61

To enable a faster downstream search algorithm on a cable access router interface, use the 
cable-modem fast-search command from interface configuration mode. Use the no form of this 
command to disable the downstream fast-search feature.

Syntax Description

There are no keywords or arguments for this command.

Defaults

Disabled

Command Modes

Interface configuration

Command History

Usage Guidelines

This feature speeds up the frequency search performed by the cable access router. Normally it takes 
the cable access router about 30 to 50 seconds to sample 30 to 50 frequencies. The cable-modem 
fast-search command can reduce this search time. However, there might be some cases where this 
fast-search algorithm might not perform as well as the default algorithm. Trial and error is the only 
way to discover how well this feature works for your environment.

Examples

The following example shows how to enter the cable-modem fast-search command, starting from 
global configuration mode:

uBR924(config)# interface cable-modem 0

uBR924(config-if)# cable-modem fast-search

uBR924(config-if)#

11.3 NA

This command was  introduced.