Cisco Systems uBR7200 Series Anleitung zur Fehlerbehebung PDF herunterladen (Seite 14)

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Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide

78-5897-01

Chapter 4 Troubleshooting the System

Managing Cable Modems on the HFC Network

Sample output:

noisy1#show cable hop

Upstream Port Poll Missed Min Missed Hop Hop Corr Uncorr

Port Status Rate Poll Poll Poll Thres Period FEC FEC

(ms) Count Sample Pcnt Pcnt (sec) Errors Errors

Cable3/0/U0 down 1000 * * * frequency not set * * * 0 0

Cable3/0/U1 admindown 1000 * * * interface is down * * * 0 0

Cable3/0/U2 admindown 1000 * * * interface is down * * * 0 0

Cable3/0/U3 admindown 1000 * * * interface is down * * * 0 0

Cable3/0/U4 admindown 1000 * * * interface is down * * * 0 0

Cable3/0/U5 admindown 1000 * * * interface is down * * * 0 0

Cable4/0/U0 10.800 Mhz 1000 0 0 ----- 100% 300 0 0

Cable6/0/U0 down 1000 * * * frequency not set * * * 0 0

Spectrum Management Debug and Test Commands

To enable display of frequency hopping debugging messages, enter:

debug cable freqhop

To enable display of spectrum management debugging messages, enter:

debug cable specmgmt

This command also enables display of channel width list and offer list for the show cable

spectrum-group command.

To force a frequency hop decision on the port or ports, enter:

test cable hop

cable-if

[

upstream portnum

]

Show Cable Hop Command

Using Cisco IOS Release 12.0(5)T1 or higher headend images, you can use the following command to

obtain specific upstream interface information:

show cable hop

cable-if

[upstream <

portnum

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Cisco Systems uBR7200 Series Anleitung zur Fehlerbehebung Seite 14