How to enable optical ports on an H3C Layer 3 switch

To configure an optical port on an H3C Layer 3 switch, you need to enable the interface, assign VLANs, and verify the optical module status using CLI commands. Step 1: Access the Switch CLIConnect to the switch via console, SSH, or Telnet and log in with administrative credentials. Enter system view mode to configure interfaces: CodeCopysystem-view Step 2: Identify the Optical InterfaceUse the following command to list all interfaces and locate the optical port: CodeCopydisplay interface brief This shows interface types, numbers, and current link status.

Step 3: Enable the Optical PortEnter the interface configuration mode for the optical port (e.g., XG0/1): CodeCopyinterface XG0/1no shutdown This activates the port. If the port is a combo port, ensure the electrical interface is shutdown before using the optical interface. Step 4: Configure VLANsDepending on your network design, configure the port as access, trunk, or hybrid: Access port (single VLAN): CodeCopyport link-type accessport default vlan 10 Trunk port (multiple VLANs): CodeCopyport link-type trunkport trunk permit vlan 10 20 30 Hybrid port (mixed behavior): CodeCopyport link-type hybridport hybrid permit vlan 10 20port hybrid untagged vlan 10 Ensure the VLANs exist before assigning them.

Step 5: Verify Optical Module StatusCheck the optical module and link status: CodeCopyshow interface XG0/1 This displays the interface rate, module type, link state, and statistics. For detailed diagnostics, use: CodeCopyshow transceiver diagnosis interface XG0/1 This provides real-time metrics such as transmit/receive optical power, temperature, and bias current, helping confirm normal operation. Step 6: Save ConfigurationAfter configuration, save the changes to prevent loss after reboot: CodeCopysave Additional TipsFor combo ports, only one interface (optical or electrical) can be active at a time.

Monitor the UP/DOWN log messages to track link changes, but you can disable excessive logging if needed.

Use MAC or I

P binding if you want to restrict access to specific devices on the optical port. By following these steps, the optical port on an H3C Layer 3 switch will be properly configured, operational, and integrated into your VLAN topology.