If the switch either fails to show a link between an installed transceiver and another device or demonstrates errors or other unexpected behavior on the link, check the port configuration on both devices for a speed and/or duplex (mode) mismatch.
Status and parameters for each port type
Status or parameter |
Description |
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Enabled |
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Status (read-only) |
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Mode |
The port's speed and duplex (data transfer operation) setting.
Gigabit Fiber-Optic Ports (Gigabit-SX, Gigabit-LX, and Gigabit-LH):
Gigabit Copper Ports:
10-Gigabit CX4 Copper Ports:
10-Gigabit SC Fiber-Optic Ports (10-GbE SR, 10-GbE LR, 10-GbE ER):
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Auto-MDIX |
The switch supports Auto-MDIX on 10Mb, 100Mb, and 1 Gb T/TX (copper) ports. (Fiber ports and 10-gigabit ports do not use this feature.)
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Flow control |
With the port mode set to |
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Specifies the percentage of the theoretical maximum network bandwidth that can be used for broadcast traffic. Any broadcast traffic exceeding that limit will be dropped. Zero (0) means the feature is disabled. The broadcast-limit command operates at the port context level to set the broadcast limit for a port on the switch.
|
Error |
Error message |
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Requesting too many fields (total characters exceeds 80) |
Total length of selected data exceeds one line |
Field name is misspelled |
Invalid input: |
Mistake in specifying the port list |
Module not present for port or invalid port: |
The port list is not specified |
Incomplete input: custom |
If you have included a pattern matching command to search for a field in the output of the show int custom
command, and the show int custom
command produces an error, the error message may not be visible and the output is empty. For example, if you enter a command that produces an error (such as vlan is misspelled) with the pattern matching include
option, the output may be empty:
It is advisable to try the show int custom
command first to ensure there is output, and then enter the command again with the pattern matching option.
Note that in the above command, you can substitute int
for interface
; that is: show int custom
.