Chapter 4 Troubleshooting the System
Managing Cable Modems on the HFC Network
Table 4-14 Show Cable Hop Parameter Descriptions
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Upstream Port | The upstream port for this information line |
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Port Status |
| Show “down” if frequency is unassigned, “admindown” if the port is | |||||||
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| shutdown, or the center frequency of the channel if the port is up | |||||||
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Poll Rate |
| The rate station maintenance polls are generated (msec) | |||||||
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Missed Poll Count | The number of missing polls |
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Min Poll Sample | The number of polls in the sample |
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Missed Poll Pcnt | The ratio of missing polls to the number of polls expressed as a percentage | ||||||||
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Hop Thres Pcnt | The level that the missed poll percentage must exceed to trigger a frequency | ||||||||
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| hop expressed as a percentage |
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Hop Period |
| The maximum rate which frequency hopping will occur (seconds) | |||||||
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Corr FEC Errors | The number of correctable FEC errors on this upstream port | ||||||||
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Uncorr FEC Errors | The number of uncorrectable FEC errors on this upstream port | ||||||||
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noisy1#show | cable hop |
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Upstream | Port | Poll Missed | Min | Missed Hop | Hop | Corr | Uncorr | ||
Port | Status | Rate Poll | Poll | Poll | Thres | Period | FEC | FEC | |
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| (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 | |||
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
Table
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| Field |
| Description |
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| Upstream Port |
| The upstream port for this information line |
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| Port Status |
| Show “down” if frequency is unassigned, “admindown” if the port is |
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| shutdown, or the center frequency of the channel if the port is up |
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| Poll Rate |
| The rate station maintenance polls are generated (msec) |
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| Missed Poll Count |
| The number of missing polls |
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| Min Poll Sample |
| The number of polls in the sample |
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| Missed Poll Pcnt |
| The ratio of missing polls to the number of polls expressed as a percentage |
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| Hop Thres Pcnt |
| The level that the missed poll percentage must exceed to trigger a frequency |
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| hop expressed as a percentage |
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| Hop Period |
| The maximum rate at which frequency hopping will occur (seconds) |
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| Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide |
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