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show interface cable downstream
54335436 packets output, 2854290447 bytes, 0 discarded
0 output errors
1 total active devices, 1 active modems
Total downstream bandwidth: 27000000 bps
Total downstream reserved bandwidth: 1000000 bps
Worst case latency for low latency queue: 0 usecs
Current Upper limit for worst case latency: 0 usecs
Router#
Table 3-51
Table 3-51 show interface cable downstream Field Descriptions
Field
Cable
Downstream is
up/...administratively down
packets output
bytes
discarded
output errors
total active devices
active modems
Total downstream bandwidth
Total downstream reserved
bandwidth
Worst case latency for low
latency queue
Current Upper limit for worst
case latency
Tip
In Cisco IOS Release 12.1(12)EC, Release 12.2(8)BC1, and later releases, you can add a timestamp to
show commands using the exec prompt timestamp command in line configuration mode.
Cisco Broadband Cable Command Reference Guide
3-210
describes the fields shown in the show interface cable downstream display.
Description
Indicates the location of the downstream interface.
Indicates the administrative state of the interface.
Total number of data packets that have been transmitted on this downstream cable
interface.
The number of bytes for data packets that have been transmitted on this downstream cable
interface.
Total number of packets that were not transmitted on the downstream, because of an error,
such as a buffer overrun, the Cisco CMTS running out of memory, or the frame being
larger than the cable interface's MTU value.
Total number of packets that could not be transmitted on this downstream cable interface
because of all errors.
Total number of active cable modems and customer premises equipment (CPE) devices
that are connected to this downstream cable interface.
Total number of active cable modems that are connected to this downstream cable
interface.
Total bandwidth associated with this downstream cable interface, in bits per second.
Total bandwidth on this downstream cable interface that has been reserved by specifying
a value for the Min Reserved Traffic Rate field for the downstream service flow in the
cable modems' DOCSIS configuration files.
Worst case latency value, in microseconds, that is allowed on this downstream cable
interface, as determined by the Max DS Latency field for the downstream service flow in
the cable modems' DOCSIS configuration files.
Lowest worst case latency value, in microseconds, that is allowed on this downstream
cable interface. The Cisco CMTS uses the lowest specified Max DS Latency value that
has been specified for a downstream service flow in any of the DOCSIS configuration
files being used by cable modems on this downstream.
If a cable modem tries to register a downstream service flow that uses a worst case latency
that is greater than this value, the Cisco CMTS will refuse to admit that service flow.
Chapter 3
Cisco CMTS Show Commands
OL-1581-08
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