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vlan – Why my switchport trunk encapsulation dotlq is not working in CISCO packet tracer?

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#vlan #switchport #trunk #encapsulation #dotlq #working #CISCO #packet #tracer

enter image description here
-Below this the code that I type in CLI-

Switch>enable
Switch#config T
Enter configuration commands, one per line.  End with CNTL/Z.
Switch(config)#int gig1/0/1
Switch(config-if)#switchport trunk en
Switch(config-if)#switchport trunk encaps
Switch(config-if)#switchport trunk encapsu
Switch(config-if)#switchport trunk encapsulation dotlq
                                   ^
% Invalid input detected at '^' marker.
    
Switch(config-if)#switchport trunk encapsulation dotlq
                                   ^
% Invalid input detected at '^' marker.
    
Switch(config-if)#switchport trunk encapsulation dotlq
                                   ^
% Invalid input detected at '^' marker.
    
Switch(config-if)#switchport trunk encapsulation dotlq
                                   ^
% Invalid input detected at '^' marker.
    
Switch(config-if)#
Switch#
%SYS-5-CONFIG_I: Configured from console by console