Cisco Broadband Cable Command Reference Guide

cable upstream fec
cable upstream fec
Syntax Description
Defaults Enabled
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Cisco Broadband Cable Command Reference Guide
Chapter 2 Cisco Cable Modem Termination System Commands
To enable upstream forward error correction (FEC), use the cable upstream fec command in cable
interface configuration mode. To disable FEC, use the no form of this command.
cable upstream n fec
no cable upstream n fec
Command Modes Interface configuration (cable interface only)
Command History
Usage Guidelines The Cisco CMTS uses FEC to attempt to correct any upstream data that might have been corrupted. To
use this feature, you need to activate FEC on the upstream RF carrier. When FEC is activated, the
Cisco CMTS commands all CMs on the network to activate FEC.
Examples The following example shows how to activate upstream forward error correction:
Related Commands
n Specifies the upstream port number. Valid values start with 0 for the first
upstream port on the cable interface line card.
Release Modification
11.3 XA This command was introduced.
router (config-if)# cable upstream 0 fec
Command Description
cable upstream frequency Enters a fixed frequency of the upstream RF carrier for an
upstream port.
cable upstream power-level Sets the input power level for the upstream RF carrier in
decibels per millivolt (dBmV).
cable upstream scrambler Enables the cable upstream scrambler.
cable upstream shutdown Disables the upstream port.
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