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Chapter 6
Cable CPE Commands
cable-modem fast-search
To enable a faster downstream search algorithm on the cable interface, use the cable-modem fast-search
command in cable interface configuration mode. To disable the downstream fast-search feature, use the
no form of this command.
Cisco uBR904, uBR924 cable access routers
Cisco IOS Release 12.1(2)T removed this command from the CLI for all platforms and reserved it for
Note
exclusive use by the DOCSIS provisioning process.
Syntax Description
This command has no arguments or keywords.
Defaults
Disabled
Command Modes
Interface configuration (cable interface only)
Command History
Release
11.3(4)NA
12.0(4)XI1
12.1(2)T
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 enable the faster downstream search algorithm on the router's
cable interface:
Router(config)# interface cable-modem 0
Router(config-if)# cable-modem fast-search
Router(config-if)#
OL-1581-07
cable-modem fast-search
no cable-modem fast-search
Modification
This command was introduced for the Cisco uBR904 cable access router.
Support was added for the Cisco uBR924 cable access router.
This command was removed from the CLI for all platforms and reserved for
exclusive use by the DOCSIS provisioning process.
Cisco Broadband Cable Command Reference Guide
cable-modem fast-search
6-13
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