Default switch port config

[dtom]

What is the default switch port configured to? Switchport? Trunk port? Allow only the default vlan?

[acampbell]

Hi,

It depends on the switch model.

E.g.
6500 - interfaces are by default unconfigured Layer 3.
You need ti tye "switchport" to mave the inteface to the
layer 2 default "switchport mode dynamic desirable"

This means the interface will send DTP frames to initiate trunking with
its partner but will be in native vlan "1" .

A 2960 interface default as a larer 2 interface "switchport mode dynamic auto"
so it will form a trunk with its partnet only if the party initiates trunking.
Again its native vlan is "1"

Hope this helps
Regards
Alex