If two switches are connected, one with switchport mode trunk and the other with switchport mode dynamic desirable, will both switches form an operational trunk?
1 Answer
If two switches are connected, one with
switchport mode trunk
and the other withswitchport mode dynamic desirable
, will both switches form an operational trunk?
Yes, the switchports will form a trunk as switchport mode trunk
does not disable DTP.
A switchport configured with switchport mode dynamic auto
will also negotiate as a trunk if the connected switchport is configured with switchport mode trunk
.
-
3In addition, if two switches with switchport mode dynamic desirable are connected to each other, the switches will also form a trunk. The list is:
Trunk + Trunk = Trunk
Trunk + Des = Trunk
Trunk + Auto = Trunk
Des + Des = Trunk
Des + Auto = Trunk
Auto + Auto = Access
Any + Access = Access
nonnegotiate + Trunk = Trunk
nonnegotiate + nonnegotiate = Trunk
Default is dynamic auto.– user36472Aug 9, 2017 at 11:29