Troubleshooting guide

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Cisco Broadband Local Integrated Services Solution Troubleshooting Guide
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Chapter 7 Troubleshooting the CMTS
Troubleshooting the Cisco uBR7246VXR
Table 7-8 describes the fields shown in the show interface cable upstream display.
Table 7-8 Show Interface Cable Upstream Command Field Descriptions
Field Description
Cable Indicates the location of the upstream interface.
Upstream is up/...administratively down Indicates the administrative state of the upstream
interface.
Received broadcasts Number of broadcast packets received through
this upstream interface.
Multicasts Number of multicast packets received through
this upstream interface.
Unicasts Number of unicast packets received through this
interface.
Discards Number of packets discarded by this interface.
Errors Sum of all errors that prevented upstream
transmission of packets through this interface.
Unknown protocol Number of packets received that were generated
using a protocol unknown to the Cisco uBR.
Packets input Number of packets received through this
upstream interface that were free from errors.
Corrected Number of error packets received through this
upstream interface that were corrected.
Uncorrectable Number of error packets received through this
upstream interface that could not be corrected.
Noise Number of upstream packets corrupted by line
noise.
Microreflections Number of upstream packets corrupted by
microreflections.
Guaranteed-rate service queue depth Number of bandwidth requests queued up in the
Guarantee-rate queue. This queue is only
available to modems that have a reserved
minimum upstream rate in their Class of Service.
Best-effort service queue depth Number of bandwidth requests queued up in the
Best-effort queue. This queue is available to all
modems that do not have any reserved rate on the
upstream.
Total Modems On This Upstream Channel Number of cable modems currently sharing this
upstream channel. This field also shows how
many of these modems are active.