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Chapter 6
Cable CPE Commands
Table 6-30 show interfaces cable-modem Field Descriptions (continued)
Field
collisions
interface resets
output buffer failures
output buffers swapped out
The following example shows typical output of the show interfaces cable-modem accounting
command, which shows the number of packets and bytes of each protocol type that is passing through
the cable interface:
Router# show interfaces cable-modem 0 accounting
cable-modem0
Router#
Table 6-31
Table 6-31 show interfaces cable-modem accounting Field Descriptions
Field
Protocol
Pkts In
Chars In
Pkts Out
Chars Out
The following example shows typical output for the show interfaces cable-modem counters command:
Router# show interfaces cable-modem 0 counters
Cable specific counters:
Ranging requests sent
Downstream FIFO full
Re-requests
OL-1581-07
Protocol
Pkts In
IP
545
Trans. Bridge
3878
ARP
describes the significant fields shown in this display.
Description
List of protocols operating on the cable-modem interface.
Number of packets of each protocol received on the interface.
Number of bytes of each protocol received on the interface.
Number of packets of each protocol sent on the interface.
Number of bytes of cache protocol sent on the interface.
: 50982
: 0
: 7277
Description
Number of messages retransmitted due to an Ethernet collision.
Collisions are usually the result of an overextended LAN
(Ethernet or transceiver cable too long, more than two repeaters
between stations, or too many cascaded multiport transceivers).
A packet that collides is counted only once in output packets.
Number of times an interface has been completely reset. A reset
can happen if packets queued for transmission were not sent
within several seconds. On a serial line, this can be caused by a
malfunctioning modem that is not supplying the transmit clock
signal, or by a cable problem. If the system notices that the
carrier detect line of a serial interface is up, but the line protocol
is down, it periodically resets the interface in an effort to restart
it. Interface resets can also occur when an interface is looped
back or shut down.
Number of times the output buffer has failed.
Number of times the output buffer has been swapped out.
Chars In
Pkts Out
185502
159
964995
12597
73
3066
86
Cisco Broadband Cable Command Reference Guide
show interfaces cable-modem
Chars Out
90240
1611142
4128
6-169
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