Can optical interfaces on CE series switches be connected using a single optical fiber

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Optical interfaces on CE series switches in V100R002C00 and later versions can be connected using a single optical fiber.

Other related questions:
Can the E1 interface of an AR router interconnect with the Ethernet
The E1 interface of an AR router cannot interconnect with the Ethernet. - E1/T1: E1/T1 is a technology of using the synchronous time division multiplexing technology to combine multiple audio channels into a 2 Mbit/s or 1.5 Mbit/s high-speed channel. It is used in WAN in general. - Ethernet: Ethernet uses the Carrier Sense Multiple Access (CSMA) and Conflict Detection (CD) technologies and runs on cables of multiple types with a speed ranging from 10 Mbit/s to 10 Gbit/s. It is used in LAN in general. As described above, the principles, protocols, and application scenarios of E1 and T1 are different. In addition, E1 or other interface cards equipped with four or eight interfaces use RJ45 interfaces but do not use the Ethernet.

Can 10GE optical interfaces of a switch work upon a unidirectional fiber connection
10GE optical interfaces of a switch cannot work upon a unidirectional fiber connection. A unidirectional fiber connection occurs between two 10GE optical interfaces when one interface is Down because the Rx fiber is removed, while the other interface is still Up because its Rx fiber can receive link_Up signals from the PHY layer. A switch determines the status of a 10GE optical interface according to the IEEE 802.3ae standard. As defined in this standard, the MAC layer of a 10GE optical can send local_fault and remote_fault signals. A switch can determine the link status based on only the link status of the PHY layer or based on the link status of the PHY layer and the local_fault and remote_fault signals from the MAC layer. On a Huawei switch, link status of a 10GE optical interface turns Up only when the link status of the PHY layer is Up and both the local_fault and remote_fault signals are 0. When two 10GE optical interfaces are interconnected and the Rx fiber on one interface is removed, this interface goes Down and the MAC layer of the interface generates a local_fault signal. Meanwhile, the local interface sends a fault signal to the remote interface through the Tx fiber. The remote interface receives the link_Up signal from the PHY layer and the remote_fault signal from the MAC layer. Therefore, the link status of the remote interface goes Down.

Optical transceiver optical fiber types applicable to optical interfaces of the USG6000
What optical transceiver optical fiber types are applicable to optical interfaces of the USG6000? GE and 10GE optical ports provided by the USG support Gigabit and 10-Gigabit optical transceivers, respectively. Technical specifications of Gigabit optical transceivers Model eSFP-GE-SX-MM850 Optical fiber type Multi-mode Model SFP-GE-LX-SM1310 Optical fiber type Single-mode Model OSU015N00 Optical fiber type Single-mode Model S-SFP-GE-LH40-SM1310 Optical fiber type Single-mode Model S-SFP-GE-LH40-SM1550 Optical fiber type Single-mode Model eSFP-GE-ZX100-SM1550 Optical fiber type Single-mode Model S-SFP-GE-LH80-SM1550 Optical fiber type Single-mode Technical specifications of 10-Gigabit optical transceivers Model OMXD30000 Optical fiber type Multi-mode Model OSX010000 Optical fiber type Single-mode Model OSX040N01 Optical fiber type Single-mode Model SFP-10G-USR Optical fiber type Multi-mode Model OSXD22N00 Optical fiber type Multi-mode Model LE2MXSC80FF0 Optical fiber type Single-mode

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