Configuring VLANs and virtual switches on a Ciena 5142 involves using the command line interface (CLI). The exact commands can vary based on the software version and specific network configuration. Below is a general example of how to configure a VLAN and a virtual switch on a Ciena 5142 device:
### Step-by-Step Configuration
1. **Access the Device:**
Connect to the Ciena 5142 via console or SSH.
2. **Enter Global Configuration Mode:**