CLI "unknow command"

Hello, 

My compagnie has just provided me a NETGEAR GS108T and asked me to programmaticaly disable a specified port. 

To do that, I need to do it manually first with CLI. 

I have successfully connected to the SWITCH with telnet. According to a NETGEAR CLI user manual, I need to enter these following commands to disable a port :

#config
#interface 1/0/2
#shutdown and other commands

But when I write "#interface 1/0/2" to access to the 2nd port, the switch reply "unknow command"

What did I do wrong ? Probably this model of switch is not compatible with all CLI commands ?

Thank you,

Gautier