🖧 #134. Trunk with native VLAN 99: S3
Make port **GigabitEthernet0/2** on **S3** a trunk, and:
- set the native VLAN to **99** (for security, don't use VLAN 1),
- let only VLANs **20,40,99** through.
What to set up
- ○ Trunk mode
- ○ Native VLAN 99
- ○ Allowed VLANs: 20,40,99
💡 Type the commands one per line, the way you would on a real Cisco device. Short forms work too (conf t, int fa0/1, no shut). Lines like enable, configure terminal, exit and end are fine anywhere.