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Catalyst 2950 and Catalyst 2955 Switch Command Reference
0L-10102-01
Chapter 2 Catalyst 2950 and 2955 Cisco IOS Commands
show controllers ethernet-controller
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output
do not appear, but the lines that contain Output appear.
Examples This is an example of output from the show controllers ethernet-controller command on a non-LRE
switch. For this example, Table 2-9 describes the Transmit fields, Table 2-10 describes the Receive
fields, and Table 2-11 describes the Transmit and Receive fields.
Switch# show controllers ethernet-controller fastethernet0/2
Transmit Receive
19555003 Bytes 23485398 Bytes
222479 Frames 313530 Frames
161490 Multicast frames 0 FCS errors
256 Broadcast frames 313467 Multicast frames
0 Pause frames 1 Broadcast frames
0 Single defer frames 0 Control frames
0 Multiple defer frames 0 Pause frames
0 1 collision frames 0 Unknown opcode frames
0 2-15 collisions 0 Alignment errors
0 Late collisions 0 Length out of range
0 Excessive collisions 0 Symbol error frames
0 Total collisions 0 False carrier errors
0 Control frames 0 Valid frames, too small
0 VLAN discard frames 0 Valid frames, too large
0 Too old frames 0 Invalid frames, too small
0 Tagged frames 0 Invalid frames, too large
0 Aborted Tx frames 0 Discarded frames
Transmit and Receive
384595 Minimum size frames
131178 65 to 127 byte frames
6 128 to 255 byte frames
20229 256 to 511 byte frames
1 512 to 1023 byte frames
0 1024 to 1518 byte frames
0 1519 to 1522 byte frames
Table 2-9 Transmit Field Descriptions
Field Description
Bytes The total number of bytes sent on an interface.
Frames The total number of frames sent on an interface.
Multicast frames The total number of frames sent to multicast addresses.
Broadcast frames The total number of frames sent to broadcast addresses.
Pause frames The number of pause frames sent on an interface.
Single defer frames The number of frames for which the first transmission attempt on an interface is not successful. This
value excludes frames in collisions.
Multiple defer frames The number of frames that are not sent after the time exceeds 2*maximum-packet time.
1 collision frames The number of frames that are successfully sent on an interface after one collision occurs.
2-15 collisions The number of frames that are successfully sent on an interface after more than one collision occurs.
Late collisions After a frame is sent, the number of times that a collision is detected on an interface later than 512
bit times.
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