Configure IP address for fiber optic switch

To assign an IP address on a fiber optic switch, configure a Layer 3 interface or VLAN interface, assign a static or DHCP IP, and enable the interface for network management. Step 1: Determine Switch Type and Interface ModeMost fiber optic switches operate as Layer 2 by default, meaning ports forward traffic without IP-level routing. To assign an IP address, the switch must either be a Layer 3 switch or have a management VLAN interface.

For Layer 3 switches, you may need to convert a port from Layer 2 to Layer 3 mode. On Huawei switches, this can be done using the undo portswitch command in system view to switch interfaces to Layer 3 mode. On Cisco switches, you can configure VLAN interfaces for management purposes.

Step 2: Configure VLAN or InterfaceManagement VLAN: Typically, VLAN 1 is used as the default management VLAN.

Enter VLA

N configuration mode: CodeCopyinterface vlan 1 Assign IP Address: Set a static IP address and subnet mask: CodeCopyip address Enable the Interface: CodeCopyno shutdown Optional Default Gateway: If the switch needs to communicate outside its subnet: CodeCopyip default-gateway Optional DNS Server: CodeCopyip name-server This allows the switch to communicate with other network devices and be managed remotely. Step 3: Assign IP Addresses to VLANs (for Inter-VLAN Routing)If your switch supports multiple VLANs and Layer 3 routing: Create VLANs: CodeCopyvlan 10vlan 20 Assign ports to VLANs: CodeCopyinterface fa0/1switchport access vlan 10 Assign IP addresses to VLAN interfaces: CodeCopyinterface vlan 10ip address 192.

168. 10. 1 255.

255. 255. 0no shutdown Each VLAN IP acts as a default gateway for devices in that VLAN.

Step 4: Configure DHCP (Optional)If you want the switch to provide IP addresses dynamically: Create a DHCP pool: CodeCopyip dhcp pool VLAN10network 192. 168. 10.

0 255. 255. 255.

0default-router 192. 168. 10.

1dns-server 8. 8. 8.

8 Verify DHCP status and ensure the VLAN interface is active. Step 5: Verify ConfigurationCheck assigned IP addresses: CodeCopyshow ip interface brief Test connectivity by pinging the switch from a host: CodeCopyping Confirm VLAN and interface status to ensure proper Layer 3 communication. Step 6: Save ConfigurationTo retain settings after a reboot: CodeCopywrite memory orCodeCopycopy running-config startup-config By following these steps, you can configure IP addresses on a fiber optic switch for management, inter-VLAN routing, or DHCP services, ensuring proper network connectivity and administration.