Connection between optical fiber devices in the Integrated Wiring Network (1)

Because the price of optical fiber and optical fiber port is still very expensive, optical fiber is mainly used for connection between the core switch and the aggregation layer switch, or for cascade between the aggregation layer switch. Note that all optical fiber ports are not stacked and can only be used for Cascade.

1. Optical Fiber jumper crossover

Each vswitch has two fiber ports, that is, one port is sent at a time. Of course, the optical fiber jumper must also be two; otherwise, communication between ports fails. When a vswitch is cascade through an optical fiber port, both ends of the optical fiber jumper must be sent and received. When one end is connected to "receive", the other end is connected to "send ". Similarly, when one end is connected to "fat" elbow, and the other end is connected to "accept ". The Cisco GBIC optical fiber module is marked with a sending and receiving sign. The arrows on the left side indicate "receiving", and the arrows on the right side indicate "sending, if both ends of the optical jumper are connected to "receive" or "send", the LED light on the port is not on, indicating that the connection is failed. The LED indicator turns green only when the optical fiber port is successfully connected.

Similarly, when the aggregation layer switch is connected to the core switch, the optical fiber receiving and receiving ports must also be cross-connected, as shown in 1.

Connect to the core switch