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Are there any pitfalls of having this command on interfaces that will never be used for trunks? i.e. any unneeded traffic etc.
Thanks in advance.
They can actually become trunking interfaces if connected to another switch with mode desirable or mode auto
If you don't want to ever have those interfaces in trunking mode, change it to mode access
The majority of our switch interfaces are configured as such:
switchport access vlan 120
switchport mode dynamic desirable
...so in this case, I should just be removing the 'switchport mode dynamic desirable' line, correct?
Removing the line won't fix the problem.
The switchport needs to have a mode to run on. It depends on the hardware but removing the line may set your switchport to dynamic auto. If you are connecting to hosts, the recommended macro to run is switchport host
switchport host is a macro. The command is clearly explained on the link I posted. If the commands that are part of the macro are already under the switchport, they won't be removed. It's like a copy and paste of a template that you may have.
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