• Arista CAB-Q-Q-100G-3M 100G QSFP28 to QSFP28 DAC twinax cable 3m
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Arista

Arista CAB-Q-Q-100G-3M | 100G QSFP28 to QSFP28 DAC Cable, 100GBASE-CR4, 3m

CAB-Q-Q-100G-3M

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Description

This passive twinax copper direct attach cable has a QSFP100 (QSFP28) connector on each end and carries 100GbE over IEEE 802.3 100GBASE-CR4 links. At 3 metres it suits short-reach top-of-rack and HPC connections between Arista QSFP100 ports. It is part of Arista's 100G QSFP twinax copper cable family and offers a cost-effective alternative to optical links for in-rack and adjacent-rack runs.

Enquire with XS Network Tech for new or used pricing and availability.

Features

- Part of Arista's 100GBASE-CR4 QSFP-to-QSFP twinax copper cable family (0.5m to 5m)
- Cost-effective, short-reach 100G connectivity for data centre and HPC top-of-rack links
- Passive copper design with no separate optics required
- Can also be used at 40G in 100G QSFP ports, although 40G cables cannot be used for 100G

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

- Standard: IEEE 802.3 100GBASE-CR4
- Connectors: QSFP100 (QSFP28) to QSFP100 (QSFP28)
- Cable type: Passive twinax copper
- Length: 3 metres
- Wire gauge: 26 AWG
- Minimum bend radius: 60 mm
- Electrical lanes: 4 x 25G NRZ
- FEC: Reed-Solomon (RS) FEC should be used for IEEE 802.3 compliance
- Minimum EOS version: 4.15.2

FAQs

Q: What is the maximum reach of this cable?
A: This is a 3 metre passive twinax copper cable for 100GBASE-CR4 links, intended for short-reach connections between QSFP100 ports.

Q: Does it need FEC to be enabled?
A: Reed-Solomon (RS) FEC should be used for IEEE 802.3 compliance on 100GBASE-CR4 links.

Q: Which EOS version is required?
A: The minimum EOS version listed for the CAB-Q-Q-100G cable family is 4.15.2.

Q: Is it supported on every Arista QSFP100 port?
A: No. It is not supported on the QSFP100 ports of the 7280SRAM-48C6 and 7280CR2M-30 due to a copper cable restriction on those ports.

Q: Can this cable be used at 40G?
A: Yes, it can also operate at 40G in 100G QSFP ports. The reverse does not apply, as 40G cables cannot be used for 100G.

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