Juniper EX4600, Руководство по оборудованию, Страница: 83 / 230

Table 24: SFP+ Active Direct Attach Copper Cable Specifications (continued)
Specifications Product Number
10-Gbps full-duplex serial transmission Rate QFX-SFP-DAC-10MA
Copper pigtail Connector type
3.3 V Supply voltage
0.627 W Power consumption (per end)
–40
°
C to 85
°
C Storage temperature
Twinax Cable type
28 AWG Wire AWG
2 in. (5 cm) Minimum cable bend radius
100 ohms Cable characteristic impedance
2% maximum Crosstalk between pairs
10 m (32.8 ft) Length
Related
Documentation
Interface Support for an EX4600 Switch on page 46
•
•
Interface Specifications for SFP, SFP+, and QSFP+ Transceivers for the EX4600 Switch
on page 49
•
Interface Specifications for QSFP+ DAC Cables for the EX4600 Switch on page 68
•
Installing a Transceiver in an EX Series Switch on page 182
•
Removing a Transceiver from an EX Series Switch on page 179
Interface Specifications for QSFP+ DAC Breakout Cables for the EX4600 Switch
Quad small form-factor pluggable plus (QSFP+) transceiver to four small form-factor
pluggable plus (SFP+) direct-attach copper (DAC) breakout cables are suitable for
in-rack connections between servers and EX4600 switches.
You can use breakout cables purchased from a third party. These cables should meet
the specifications described in
Table 25 on page 66 . The minimum Junos OS release for
breakout cable support for EX4600 switches is Junos OS 13.2X51-D25.
The cables are hot-removable and hot-insertable. A breakout cable consists of a QSFP+
transceiver on one end and four SFP+ transceivers on the other end. The QSFP+
transceiver connects directly into the QSFP+ access port on the QFX Series device. The
cables use high-performance integrated duplex serial data links for bidirectional
65 Copyright © 2014, Juniper Networks, Inc.
Chapter 8: Port and Interface Specifications