Juniper EX4500 Series, Руководство по оборудованию

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SFP+ Direct Attach Copper Cables for EX Series Switches
IN THIS SECTION
Cable Specifications | 85
List of DAC Cables Supported on EX Series Switches | 86
Standards Supported by These Cables | 86
Small form-factor pluggable plus transceiver (SFP+) direct attach copper (DAC) cables, also known as
Twinax cables, are suitable for in-rack connections between servers and switches. They are suitable for
short distances, making them ideal for highly cost-effective networking connectivity within a rack and
between adjacent racks.
NOTE: We recommend that you use only SFP+ DAC cables purchased from Juniper Networks
with your Juniper Networks device.
CAUTION: If you face a problem running a Juniper Networks device that uses a
third-party optic or cable, the Juniper Networks Technical Assistance Center (JTAC)
can help you diagnose the source of the problem. Your JTAC engineer might recommend
that you check the third-party optic or cable and potentially replace it with an equivalent
Juniper Networks optic or cable that is qualified for the device.
Cable Specifications
EX Series switches support SFP+ passive DAC cables. The passive Twinax cable is a straight cable with
no active electronic components. EX Series switches support 1 m, 3 m, 5 m, and 7 m long SFP+ passive
DAC cables. See Figure 29 on page 86 .
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