Link Protection Card

Part Number: FT-OLP-C

Link Protection Card

Optical Link Protection Card for Fiber Protection, Bi-directional protection in SMF, 1RU Rack Chassis

Link protection helps to ensure that traffic going over a specific interface to a neighboring router or switch can continue to reach this router (switch) if that interface fails. When link protection is configured for an interface and an LSP that traverses this interface, backup tunnel is created that will handle this traffic if the interface fails. This enables all traffic carried by LSPs that traverse a failed link to be rerouted around the failure. The reroute decision is completely controlled locally by the router interfacing the failed link.

F-tone’s FT-OLP-C is a link protection card. It can be installed into FT-P-OTP800 series transport platform for more capacity solution in limited environment. If a link-protected interface fails, traffic is quickly switched to the Backup tunnel. Backup tunnel uses a different interface and path to reach the same destination. The path used can be configured explicitly, or you can rely on CSPF.

Note that OLP should be used in pairs and a backup tunnel cannot share the same egress interface with the LSPs it monitors.

Key Features

• 1:1, 1+1 and 1-1 protection for optional
• Less than 20ms automatic switch time
• Real-time monitoring link from link failure
• Support the working channel optical power show
• Dual hot redundancy power supply and hot-pluggable
• Allows users to adjust the decision threshold optical switching power
• Supports Fast, Gigabit and 10 Gigabit Ethernet fiber connections in SC/ST/FC/LC connectors
• Switching threshold power and alarming threshold power can be set up by LCD screen or network management access
• The main equipment at receiving site have three modes for switching: automatic, forced manual and remote control
• Designed with excellent heat dissipation and temperature adaptability, it can be applied in various complicated environments

Front Panel Appearance

• LCD Display Board: Displaying the relevant information, such as the working Mode; Current Running Optical Line; Optical Power Value of the transmission device; Reverse conditions…etc
• RJ45 Ethernet Interface RJ45 Ethernet Interface for access to the Ethernet network; remote management; supporting remote graphical window management


• Enter (Esc): The button to log in and log out of the LCD menu. Press it to exit the menu or to confirm; Long press to exit the menu or cancel the setting.
▲▼：Use them to move-up and down or modify the parameters on the menu.

• Optical interface introduction: There are 6 optical interfaces on the device’s control panel: T1, R1, T2, R2, T3 and R3.

Link Protection Card for Packet-Optical Transport Platform

In this illustration, the FT-P-OTP800-4S transport platform installed 2 pieces node protection card FT-OLP-C and 1 piece control card. One FT-OLP-C occupies one slot.

Valid Slots in the Sub-racks
a. In the FT-P-OTP800-2S, valid slots are Slot 1 and Slot 2
b. In the FT-P-OTP800-4S, valid slots are Slot 2 and Slot 4
c. In the FT-P-OTP800-11S, valid slots are Slot 2 and Slot 10
Protection Illustration


It shows an example of how you can implement link protection based on 1+1 protection operation. In 1+1 operation, a splitter bridge sends the Tx signal to both line (the main line and the backup line) and a 2x1 selector switch selects the signal from one of the line. In default mode, traffic from the main line is selected. When link failures, the selector near the Rx side of the failed traffic detects the failure, switches over, and selects the traffic from the backup line.



It shows an example of how you can implement link protection based on 1:1 protection operation. The 1:1 protection adopts 2x2 optical switch technologies. If the link between two transmission equipment fails, traffic is quickly switched to the backup line generated by link protection.

For more detailed information or any custom requirements, please contact with F-tone sales team at [email protected].

This product belongs to F-tone Networks' optical components product line. For detailed specifications, please contact our sales team. Thank you!
Important Notice:
Performance figures, data and any illustrative material provided in this data sheet are typical and must be specifically confirmed in writing by F-tone Networks before they become applicable to any particular order or contract. In accordance with the F-tone Networks policy of continuous improvement specifications may change without notice.
The publication of information in this data sheet does not imply freedom from patent or other protective rights of F-tone Networks or others. Further details are available from any F-tone Networks sales representative.