Cisco Systems uBR7200 Series

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Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide

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Chapter4 Troubleshooting the System Managing Cable Modems on the HFC Network

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

UsingCisco IOS Release 12.0(5)T1 or higher headend images, youcan use the following command to

obtain specific upstream interface information:

show cable hop

cable-if

[upstream <

portnum

Table4-14 Show Cable Hop Parameter Descriptions

Field Description

Upstream Port The upstream port for this information line

Port Status Show “down” if frequency is unassigned, “admindown” if the port is

shutdown, or the center frequency of the channel if the port is up

Poll Rate The rate station maintenance polls are generated (msec)

Missed Poll Count The number of missing polls

Min Poll Sample The number of polls in the sample

Missed Poll Pcnt The ratio of missing polls to the number of polls expressed as a percentage

Hop Thres Pcnt Thelevel thatthe missedpoll percentagemust exceedto trigger afrequency

hop expressed as a percentage

Hop Period The maximum rate which frequency hopping will occur (seconds)

Corr FEC Errors The number of correctable FEC errors on this upstream port

Uncorr FEC Errors The number of uncorrectable FEC errors on this upstream port

Table4-15 Upstream Port Parameter Descriptions