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Chapter 1: Overview
Ports for 40Gbps QSFP+ or 100Gbps QSFP28 Transceivers, or
Breakout Cables
x950-28XSQ
x950-28XTQm
x950-52XSQ
x950-52XTQm
QSFP28
Transceivers
QSFP+
Transceivers
Breakout Cables
24
The x950 series switch has four ports that support the transceivers and
cables listed in Table 5.
Table 5. Ports for QSFP
Port Number
25, 29, 33, 37
25, 29, 33, 37
49, 53, 57, 61
49, 53, 57, 61
The ports support the following 100Gbps QSFP28 transceivers:
QSFP28SR4 transceiver - Maximum operating distance of 70m
(230 ft) or 100m (328 ft) with 12-strand OM3 or OM4 fiber optic
cable, respectively. Requires an MPO pluggable optical connector.
QSFP28LR4 transceiver - Operating range of 2m (6.6 ft) to 10km
(6.2 mi) with single-mode fiber optic cable. Requires a duplex LC
connector.
QSFP28-1CU and QSFP28-3CU direct attach cables - Lengths of
one and three meters, respectively.
The ports support the following 40Gbps QSFP+ transceivers:
QSFPSR4 transceiver - Maximum operating distance of 150m
(492 ft) with 12-strand OM4 fiber optic cable.
QSFPLR4 transceiver - Maximum operating distance of 2m (6.6 ft)
to 10km (6.2 mi) with single-mode fiber optic cable.
QSFP1CU and QSFP3CU direct attach cables - Lengths of 1 and
3 meters, respectively.
The ports also support copper and fiber optic break-out cables. The cables
convert the ports from single 40Gbps ports to four SFP+ 10Gbps ports.
The model names of the copper cables are QSFP-4SFP10G-3CU and
QSFP-4SFP10G-5CU. They come in lengths of 3 and 5 meters,
respectively. Refer to Figure 6 on page 25.
40Gbps
100Gbps
QSFP+
QSFP28
transceivers
transceivers
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
40Gbps to
4 x 10Gbps
breakout cables
Yes
Yes
Yes
Yes
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