show interfaces cable-modem

Examples

Traffic passing through the cable access router interface is shown in the following example:

uBR924# show interfaces cable-modem 0 cable-modem0 is up, line protocol is up

Hardware is BCM3300, address is 0050.7366.2439 (bia 0050.7366.2439) Internet address is 5.2.0.11/16

MTU 1500 bytes, BW 27000 Kbit, DLY 1000 usec, reliability 255/255, txload 1/255, rxload 1/255

Encapsulation DOCSIS, loopback not set Keepalive set (10 sec)

ARP type:ARPA, ARP Timeout 04:00:00

Last input 00:00:00, output 00:00:00, output hang never Last clearing of "show interface" counters 00:08:40 Queueing strategy:fifo

Output queue 40/40, 52787 drops; input queue 0/75, 0 drops 5 minute input rate 2000 bits/sec, 2 packets/sec

5 minute output rate 94000 bits/sec, 154 packets/sec

1074 packets input, 418472 bytes, 0 no buffer

Received 19 broadcasts, 0 runts, 0 giants, 0 throttles

0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 78771 packets output, 6326786 bytes, 0 underruns

0 output errors, 0 collisions, 0 interface resets

0 output buffer failures, 0 output buffers swapped out

Table 16 describes the significant fields shown in the display.

Table 16

show interfaces cable-modem Field Descriptions

 

 

 

Field

 

Description

 

 

cable-modem0 is up

Indicates that the interface is currently active. “Disabled” indicates the interface

 

 

has received more than 5000 errors in one keepalive interval (10 seconds by

 

 

default if keepalive is set); “administratively down” indicates the interface has

 

 

been taken down by an administrator.

 

 

line protocol is up

Indicates that the software processes that handle the line protocol believe the

 

 

interface is usable.

 

 

 

Hardware

 

Hardware type and MAC address.

 

 

Internet address

Internet address followed by the shorthand notation for the subnet mask.

 

 

 

MTU

 

Maximum Transmission Unit (equivalent of the maximum packet size) for the

 

 

interface.

 

 

 

BW

 

Bandwidth of the interface in kilobits per second.

 

 

 

DLY

 

Delay of the interface in microseconds.

 

 

 

reliability

 

Reliability of the interface, expressed as a fraction of 255, calculated as an

 

 

exponential average over a 5-minute period. (255/255 equals 100% reliability.)

 

 

 

tx load/rx load

 

Load on the interface caused by transmitting and receiving, expressed as a

 

 

fraction of 255, calculated as an exponential average over a 5 minute period.

 

 

Encapsulation/loopback/keepalive

Encapsulation method assigned to the interface.

 

 

 

loopback

 

Indicates whether or not loopback is set.

 

 

 

keepalive

 

Indicates whether or not keepalives are set.

 

 

 

ARP type

 

Type of Address Resolution Protocol configured for the interface.

 

 

 

ARP Timeout

 

Number of hours, minutes, and seconds an ARP cache entry will stay in the

 

 

cache.

 

 

 

112Cisco IOS Release 12.0(7)T

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Cisco Systems UBR900 specifications Show interfaces cable-modem Field Descriptions, Mtu