Ccna routing and Switching Complete Study Guide

switchport trunk native vlan 392

S1(config-if)#

23:17:40: Port is not 802.1Q trunk, no action

See what I mean? I tried to change the native VLAN and ISL basically responded with, 

“What’s a native VLAN?” Very annoying, so I’m going to take care of that now!

S1(config-if)#

int range gi0/13 - 14

S1(config-if-range)#

switchport trunk encapsulation ?

  dot1q      Interface uses only 802.1q trunking encapsulation when trunking

  isl        Interface uses only ISL trunking encapsulation when trunking

  negotiate  Device will negotiate trunking encapsulation with peer on

             interface

 

S1(config-if-range)#