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Troubleshooting Guide

CloudEngine 16800, 12800, 12800E, 8800, 7800, 6800, and 5800 Series Switches

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
There Are 8-Strand, 12-Strand, and 24-Strand MPO Fibers Available in the Market. What Are Their Differences? Which Type Is More Suitable for the CE Series Switches?

There Are 8-Strand, 12-Strand, and 24-Strand MPO Fibers Available in the Market. What Are Their Differences? Which Type Is More Suitable for the CE Series Switches?

MPO fibers are used for 40G and 100G optical modules. An MPO fiber consists of multiple multi-mode fiber strands, and each multi-mode fiber strand provides one laser transmission channel. Some fiber suppliers produce 8-strand MPO optical fibers, while some suppliers produce 12-strand or 24-strand MPO fibers.
  • A 40G optical module uses four channels to transmit laser and four channels to receive laser. That is, a total of eight channels are required for a 40G optical module. 8-strand and 12-strand MPO fibers use the same definition of fiber channels. Therefore, they are equivalent in functionality when connecting to 40G optical modules.
  • When 100G optical modules are used, choose MPO fibers according to the following principles:
    • Choose 24-strand fibers for CXP, CFP, and CFP2 modules.
    • Choose 8-strand or 12-strand fibers for QSFP28 modules.
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Updated: 2020-01-07

Document ID: EDOC1000060766

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