Juniper EX4300 Series - Page 155

Quad small form-factor pluggable plus (QSFP+) direct aach copper (DAC) cables are suitable for in-rack
connecons between QSFP+ ports on EX3400, EX4300, EX4550, EX4600, EX9251, and EX9253
switches. They are suitable for short distances, making them ideal for highly cost-eecve networking
connecvity within a rack and between adjacent racks.
NOTE: We recommend that you use only QSFP+ DAC cables purchased from Juniper Networks
with your Juniper Networks device.
CAUTION: The Juniper Networks Technical Assistance Center (JTAC) provides
complete support for Juniper-supplied opcal modules and cables. However, JTAC does
not provide support for third-party opcal modules and cables that are not qualied or
supplied by Juniper Networks. If you face a problem running a Juniper device that uses
third-party opcal modules or cables, JTAC may help you diagnose host-related issues if
the observed issue is not, in the opinion of JTAC, related to the use of the third-party
opcal modules or cables. Your JTAC engineer will likely request that you check the
third-party opcal module or cable and, if required, replace it with an equivalent
Juniper-qualied component.
Use of third-party opcal modules with high-power consumpon (for example,
coherent ZR or ZR+) can potenally cause thermal damage to or reduce the lifespan of
the host equipment. Any damage to the host equipment due to the use of third-party
opcal modules or cables is the users’ responsibility. Juniper Networks will accept no
liability for any damage caused due to such use.
Cable Specicaons
QSFP+ passive DAC cables are hot-removable and hot-insertable. A cable consists of a cable assembly
that connects directly into two QSFP+ modules, one at each end of the cable. The cables use integrated
duplex serial data links for bidireconal communicaon and are designed for data rates up to 40 Gbps.
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