Juniper ACX7348 - Page 70

NOTE: You must order cables with the correct polarity. Vendors refer to these crossover cables
as key up to key up , latch up to latch up , Type B , or Method B . If you are using patch panels
between two transceivers, ensure that the proper polarity is maintained through the cable plant.
The MPO opcal connector for the CFP2-100G-SR10-D3 is dened in Secon 5.6 of the CFP2
Hardware Specicaon and Secon 88.10.3 of IEEE STD 802.3-2012 . These specicaons include the
following requirements:
• Recommended Opon A in IEEE STD 802.3-2012.
• The transceiver receptacle is a plug. A patch cable with a socket connector is required to connect to
the module.
• Ferrule nish must be a at-polished interface that is compliant with IEC 61754-7.
• Alignment key is key up.
The opcal interface must meet the FT-1435-CORE requirement in Generic Requirements for Mul-
Fiber Opcal Connectors . The module must pass the wiggle test dened by IEC 62150-3.
CS Connector
You can use patch cables with CS connectors to connect two supported transceivers of the same type-
for example, 2x100G-LR4 to 2x100G-LR4 or 2x100G-CWDM4 to 2x100G-CWDM4. CS connectors are
compact connectors that are designed for next-generaon QSFP-DD transceivers. The CS connector
provides easy backward compability with QSFP28 and QSFP56 transceivers.
LC Duplex Connectors
You can use patch cables with LC duplex connectors to connect two supported transceivers of the same
type—for example, 40GBASE-LR4-to-40GBASE-LR4 or 100GBASE-LR4-to 100GBASE-LR4. A patch
cable is one ber pair with two LC duplex connectors at opposite ends. LC duplex connectors are also
used with 12-ber ribbon breakout cables.
Figure 24 on page 63 shows how to install an LC duplex connector in a transceiver.
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