Installation guide

5-27
Cisco uBR7100 Series Universal Broadband Router Software Configuration Guide
OL-2238-03
Chapter 5 Troubleshooting the System
Understanding Show Command Responses
Enhanced show interface upstream output Command
The show interface cable upstream command displays detailed MAC scheduler state information for
the upstream port. The example below illustrates the new display:
cmts# show interface cable 1/0 upstream 0
Cable1/0: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
Queue[Rng Polls] 0/20, fifo queuing, 0 drops
Queue[Cont Mslots] 0/104, fifo queuing, 0 drops
Queue[CIR Grants]
The MAC scheduler queue showing the number of CIR grants
pending.
Queue[BE Grants]
The MAC scheduler queue showing the number of BE grants pending.
Queue[Grant Shpr]
The MAC scheduler queue showing the number of grants that have
been buffered for traffic shaping.
drops
Number of packets dropped.
Reserved slot table
currently has 0 CBR
entries
Number of CBR sessions active on an upstream channel at any given
time.
Req IEs
The running counter of request IEs sent in MAPS.
Req/Data IEs
The counter of request/data IEs sent in MAPS.
Init Mtn IEs
The counter of Initial Maintenance IEs.
Stn Mtn IEs
Number of station maintenance (ranging poll) IEs.
Long Grant IEs
Number of long grant IEs.
Short Grant IEs
Number of short grant IEs.
Avg upstream channel
utilization
Indicates on average what percent of the upstream channel bandwidth
is being used.
Avg percent contention
slots
Indicates on average what percent of slots are in contention state.
Avg percent initial
ranging slots
Indicates on average what percent of slots are in initial ranging state.
Avg percent minislots
lost on late MAPs
Indicates on average what percent of slots are lost because a MAP
interrupt was too late.
Current minislot count
(formerly: Last Minislot
Stamp
[current_time_base])
Indicates the current minislot count at the CMTS. FLAG indicates the
timebase reference. This field is used only by developers.
Scheduled minislot count
(formerly: Last Minislot
Stamp
[scheduler_time_base])
Indicates the furthest minislot count allocated at the indicated time.
FLAG indicates the timebase reference. This field is used only by
developers.
Table 5-6 show interface cable upstream Command Field Descriptions (continued)
Field Description