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show interface cable
Table 3-50 show interface cable Field Descriptions (continued)
Field
rely
load
Encapsulation
ARP type
Last input
output
Last clearing of "show interface"
counters
Queueing strategy
Output queue
drops
input queue/drops
drops
Five minute input rate
Five minute output rate
Note
packets input
bytes input
Cisco Broadband Cable Command Reference Guide
3-206
These statistics are calculated using a decayed averaging method, where only the average is
stored over the interval period, not the individual samples. Every time a sample average is
taken, a percentage of the sample and a percentage of the average are added together to create
the new average. If traffic stops for a time period, these statistics do not immediately go to
zero but drop with a decay rate of about 70 percent per time period.
For example, if the interface is passing 1,000 packets per second (pps) before traffic stops, the
show interface cable command shows the rate being 300 pps at the end of the first time
interval. The rate then drops to 90 pps at the end of the second time interval, and so forth.
Description
Reliability of the interface as a fraction of 255, calculated as an
exponential average over 5 minutes. (For example, 255/255 is 100
percent reliability.)
Load on the interface as a fraction of 255, calculated as an
exponential average over 5 minutes. (For example, 255/255 is
complete saturation.)
Encapsulation method assigned to this interface.
Type of Address Resolution Protocol (ARP) and timeout value
assigned.
Number of hours, minutes, and seconds since the last packet was
successfully received by an interface.
Number of hours, minutes, and seconds since the last packet was
successfully sent by an interface.
Time at which the counters that measure cumulative statistics (such
as number of bytes sent and received) were last reset to zero.
Displays the type of queueing configured for this interface. In the
following example output, the type of queueing configured is first-
in first-out (FIFO).
Number of packets in the output queue. The format of this number
is A/B, where A indicates the number of packets in the queue, and
B indicates the maximum number of packets allowed in the queue.
Indicates the number of packets dropped because of a full queue.
Number of packets in the input queue. The format of this number
is A/B, where A indicates the number of packets in the queue, and
B indicates the maximum number of packets allowed in the queue.
Indicates the number of packets dropped because of a full queue.
Average number of bits and packets sent per second in the last five
minutes. The five-minute interval is the default time period for
statistics collection and can be changed for each individual cable
interface using the load-interval command in interface
configuration mode.
Total number of error-free packets received by the system.
Total number of bytes, including data and MAC encapsulation, in
the error-free packets received by the system.
Chapter 3
Cisco CMTS Show Commands
OL-1581-08
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