Chapter 4 Troubleshooting the System
Understanding Show Command Responses
Table 4-18 Show Interface Cable Upstream Command Field Descriptions (continued)
Field | Description |
Avg percent minislots lost on | Indicates on average what percent of slots are lost because |
late MAPs | a MAP interrupt was too late |
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Current minislot count | Indicates the current minislot count at the CMTS. FLAG |
(formerly: Last Minislot Stamp | indicates the timebase reference. This field is used only by |
(current_time_base)) | developers. |
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|
Scheduled minislot count | Indicates the furthest minislot count allocated at the |
(formerly: Last Minislot Stamp | indicated time. FLAG indicates the timebase reference. |
(scheduler_time_base)) | This field is used only by developers. |
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Enhanced Show Interface Upstream Output
The show interface cable upstream command is enhanced in Cisco IOS Release 12.0(7)XR2, Cisco IOS Release 12.1(1a)T1, or higher CMTS images to display detailed MAC scheduler state information for the upstream port. The example below illustrates the new display:
cmts#show interface cable 3/0 upstream 0 Cable3/0:Upstream 0 is up
Received 13 broadcasts, 0 multicasts, 110 unicasts 0 discards, 106 errors, 0 unknown protocol
123 packets input, 0 uncorrectable
106 noise, 0 microreflections
Total Modems On This Upstream Channel :3 (3 active)
Default MAC scheduler |
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Queue[Rng Polls] | 0/20, fifo queueing, 0 drops | |
Queue[Cont Mslots] | 0/104, fifo queueing, 0 drops | |
Queue[CIR Grants] | 0/20, fair queueing, 0 drops | |
Queue[BE Grants] | 0/30, fair queueing, 0 drops | |
Queue[Grant Shpr] | 0/30, calendar queueing, 0 drops | |
Reserved slot table currently has 2 CBR entries | ||
Req IEs 280185, Req/Data IEs 0 |
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Init Mtn IEs 800, Stn Mtn IEs 49 |
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Long Grant IEs 26, Short Grant IEs 15 |
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Avg upstream channel utilization :1% |
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Avg percent contention slots :97% |
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Avg percent initial ranging slots :1% |
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Avg percent minislots lost on late MAPs :0% | ||
Total channel bw reserved 192000 bps |
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CIR admission control not enforced |
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Current minislot count :1165412 | Flag:1 | |
Scheduled minislot count :1176227 | Flag:1 | |
New items in the display include:
•Detailed slot queue
•CBR slot scheduling table
Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide
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