Hello, I am trying to configure a subinterface such as g1/0/1.1 for example but the IOS is indicating "Invalid input detected". Does the 3750 series not support subinterfaces.
The switch model is WS-C3750-48PS-E with IOS version c3750-ipservices-mz.122.46-SE.
The parent interface configuration is as follows:
no ip address
no cdp enable
Any help appreciated.