Juniper QFX5100, Руководство по оборудованию

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CAUTION: We highly recommend using Juniper Networks DAC cables. You
can use DAC cables purchases from a third party at your own risk. If there is
a problem with the cable or the transceiver, support will not be provided. If
you choose to use a third-party able, it should meet the specifications
described in
Table 32 on page 84 .
Table 31 on page 83 describes the Junos OS software releases that supports third-party
DAC breakout cables. Earlier releases do not support third-party breakout cables.
Table 31: Third-Party QSFP+ DAC Cable Support
Third-Party DAC Cable Support Added Platform
Junos OS 12.2X50-D10 QFX3600 Node device in a QFX3000-M QFabric system
Junos OS 12.2X50-D20 QFX3600 device as a standalone switch
Junos OS 12.2X50-D10 QFX3500 Node device in a QFX3000-M QFabric system
Junos OS 12.2X50-D10 QFX3500 device as a standalone switch
Junos OS 12.2X51-D10 QFX5100 device as a standalone switch
NOTE: This topic does not describe which devices support these transceivers.
For information about which transceivers are supported on QFX Series devices,
see the following topics:
• Interface Support for the QFX3600 Device
•
Interface Support for the QFX3500 Device
•
Interface Support for the QFX5100 Switch on page 57
The 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 bidirectional communication and are designed
for data rates up to 40 Gbps.
Passive DAC cables have no signal amplification built into the cable assembly.
Table 32 on page 84 describes the passive DAC cable specifications for QSFP+.
Active DAC cables have signal amplification and equalization built into the cable assembly.
Table 33 on page 86 describes the active DAC cable specifications.
83 Copyright © 2014, Juniper Networks, Inc.
Chapter 8: Port and Interface Specifications