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Related Documentation

SFP+ Direct Attach Cables for EX Series Switches

Small form-factor pluggable plus transceiver (SFP+) direct attach copper cables, also known as Twinax cables, are suitable for in-rack connections between servers and switches. They are suitable for short distances of up to 7 m (23 ft), making them ideal for highly cost-effective networking connectivity within a rack and between adjacent racks. See Figure 36.

Figure 36: SFP+ Direct Attach Cables for EX Series Switches

SFP+ Direct Attach
Cables for EX Series Switches

This topic describes:

Cable Specifications

EX Series switches support SFP+ passive direct attach 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 direct attach cables.

Table 52 describes the support for SFP+ passive direct attach cable lengths on EX Series switches for Junos OS releases.

Table 52: Software Support for SFP+ Passive Direct Attach Cables for EX Series Switches

Switch

Software Support Added

Cable Length

EX3200 switches

Junos OS Release 10.3

1 m (3 ft), 3 m (10 ft), 5 m (16 ft), and 7 m (23 ft)

EX4200-24T, EX4200-24T-DC, EX4200-24P, EX4200-24PX, EX4200-24F, EX4200-24F-DC, EX4200-48T, EX4200-48T-DC, EX4200-48P, and EX4200-48PX switches

Junos OS Release 10.3

1 m (3 ft), 3 m (10 ft), 5 m (16 ft), and 7 m (23 ft)

EX4200-24F-S and EX4200-48T-S switches

Junos OS Release 12.3R4

1 m (3 ft), 3 m (10 ft), 5 m (16 ft), and 7 m (23 ft)

EX3300 switches

Junos OS Release 11.3

1 m (3 ft), 3 m (10 ft), 5 m (16 ft), and 7 m (23 ft)

EX4300-24T, EX4300-24P, EX4300-48T, EX4300-48T-AFI, EX4300-48P, EX4300-48T-DC, and EX4300-48T-DC-AFI switches

Junos OS Release 13.2X50-D10

1 m (3 ft), 3 m (10 ft), 5 m (16 ft), and 7 m (23 ft)

EX4300-32F switches

Junos OS Release 13.2X51-D15

1 m (3 ft) and 3 m (10 ft)

EX4300-24T-S, EX4300-24P-S, EX4300-48T-S, and EX4300-48P-S switches

Junos OS Release 13.2X51-D26

1 m (3 ft), 3 m (10 ft), 5 m (16 ft), and 7 m (23 ft)

EX4300-32F-S switches

Junos OS Release 13.2X51-D26

1 m (3 ft) and 3 m (10 ft)

EX4500 switches

Junos OS Release 10.2

1 m (3 ft), 3 m (10 ft), and 7 m (23 ft)

Junos OS Release 11.2

5 m (16 ft)

EX4550-32T-AFI, EX4550-32T-AFO, EX4550-32T-DC-AFI, EX4550-32T-DC-AFO, EX4550-32F-AFI, EX4550-32F-AFO, EX4550-32F-DC-AFI, and EX4550-32F-DC-AFO switches

Junos OS Release 12.2

1 m (3 ft), 3 m (10 ft), 5 m (16 ft), and 7 m (23 ft)

EX4550-32F-S switches

Junos OS Release 12.3R5

1 m (3 ft), 3 m (10 ft), 5 m (16 ft), and 7 m (23 ft)

EX8200 8-port SFP+ line cards (EX8200-8XS)

Junos OS Release 10.0

1 m (3 ft), 3 m (10 ft), and 7 m (23 ft)

Junos OS Release 10.3

5 m (16 ft)

EX8200 40-port SFP+ line cards (EX8200-40XS)

Junos OS Release 10.3

1 m (3 ft), 3 m (10 ft), and 7 m (23 ft)

Junos OS Release 11.1

5 m (16 ft)

Note: We recommend that you use only SFP+ direct attach cables purchased from Juniper Networks with your Juniper Networks device.

Caution: If you are having a problem running a Juniper Networks device that is using 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.

The cables are hot-removable and hot-insertable: You can remove and replace them without powering off the switch or disrupting switch functions. A cable comprises a low-voltage cable assembly that connects directly into two SFP+ ports, one at each end of the cable. The cables use high-performance integrated duplex serial data links for bidirectional communication and are designed for data rates of up to 10 Gbps.

Table 53 describes the cable specifications.

Table 53: SFP+ Direct Attach Cable Specifications

Model Number

Specification

Value

EX-SFP-10GE-DAC-1M

Rate

10-Gbps full-duplex serial transmission

Connector type

SFP+ passive Twinax cable assembly

Supply voltage

3.3 V

Power consumption (per end)

0.57 W

Storage temperature

–40°C through 85°C

Cable type

Twinax

Wire AWG

30 AWG

Minimum cable bend radius

1 in. (2.54 cm)

Cable characteristic impedance

100 ohms

Crosstalk between pairs

2% maximum

Time delay

1.31 nsec/ft

Length

3.3 ft (1 m)

EX-SFP-10GE-DAC-3M

Rate

10-Gbps full-duplex serial transmission

Connector type

SFP+ passive Twinax cable assembly

Supply voltage

3.3 V

Power consumption (per end)

0.57 W

Storage temperature

–40°C through 85°C

Cable type

Twinax

Wire AWG

30 AWG

Minimum cable bend radius

1 in. (2.54 cm)

Cable characteristic impedance

100 ohms

Crosstalk between pairs

2% maximum

Time delay

1.31 nsec/ft

Length

9.9 ft (3 m)

EX-SFP-10GE-DAC-5M

Rate

10-Gbps full-duplex serial transmission

Connector type

SFP+ passive Twinax cable assembly

Supply voltage

3.3 V

Power consumption (per end)

0.57 W

Storage temperature

–40°C through 85°C

Cable type

Twinax

Wire AWG

24 AWG

Minimum cable bend radius

1 in. (2.54 cm)

Cable characteristic impedance

100 ohms

Crosstalk between pairs

2% maximum

Time delay

1.31 nsec/ft

Length

16.4 ft (5 m)

EX-SFP-10GE-DAC-7M

Rate

10-Gbps full-duplex serial transmission

Connector type

SFP+ passive Twinax cable assembly

Supply voltage

3.3 V

Power consumption (per end)

0.57 W

Storage temperature

–40°C through 85°C

Cable type

Twinax

Wire AWG

24 AWG

Minimum cable bend radius

1 in. (2.54 cm)

Cable characteristic impedance

100 ohms

Crosstalk between pairs

2% maximum

Time delay

1.31 nsec/ft

Length

23 ft (7 m)

Standards Supported by These Cables

The cables comply with the following standards:

Related Documentation

Modified: 2015-06-23