• Arista ADPT-O-Q-100G OSFP-to-QSFP28 100G adapter with silver SFP+ modules
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Arista

Arista CAB-O-8S-200G-3M | 200G OSFP to 8x 25G SFP28 Breakout DAC, 3m

CAB-O-8S-200G-3M

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Description

This Arista breakout direct attach cable connects a single 200G OSFP port to eight 25G SFP28 ports over a 3 metre run. It suits short-reach data centre links between an OSFP switch port and server or switch ports within a rack or adjacent racks.

The cable is a passive twinax copper design, carrying 200GBASE-CR8 on the OSFP end and 8x 25GBASE-CR on the SFP ends. It needs no separate power source and draws power from the host port. This SKU is the 3m length, and the OSFP port must be configured for 200G using 8x 25G NRZ electrical lanes. Running the OSFP port this way allows interoperability with legacy 25G SFP ports.

It works with Arista platforms that have OSFP ports, running a minimum of EOS 4.23.0. The far end plugs into 25G SFP/SFP28 ports.

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

Features

- Breaks out a single 200G OSFP port into eight 25G SFP28 ports
- Passive twinax copper design with no separate power source
- Low-latency, short-reach connectivity for data centre racks
- Interoperates with legacy 25G SFP ports when the OSFP port runs at 200G (8x 25G NRZ)
- QSFP-DD equivalent available in the CAB-D-8S-200G family

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

Datasheet

Technical Specifications

- PHY type: 200GBASE-CR8 to 8x 25GBASE-CR
- Connector type: OSFP to 8x SFP (SFP28)
- Cable type: Twinax copper (passive)
- Length: 3 m
- Wavelength: N/A (copper)
- Power: Passive, draws power from the host port
- Port configuration: OSFP port set to 200G using 8x 25G NRZ electrical lanes
- Interoperability: Works with legacy 25G SFP ports
- Minimum EOS version: 4.23.0

FAQs

Q: What does the OSFP port need to be configured for?
A: The OSFP port must be configured for 200G using 8x 25G NRZ electrical lanes. This is what allows the eight 25G SFP connections to operate.

Q: Which software version is required?
A: This cable requires a minimum of Arista EOS 4.23.0 on the host platform.

Q: Does it need external power?
A: No. It is a passive copper cable and draws power from the host port.

Q: What does the far end connect to?
A: The eight SFP ends plug into 25G SFP/SFP28 ports on servers or switches, including legacy 25G SFP ports.

Q: How does it differ from other lengths in the family?
A: This SKU is the 3m length. The same breakout cable family is offered in 1, 2 and 3 m, and the electrical function is the same across lengths.

Q: Is there an equivalent for QSFP-DD ports?
A: Yes. The CAB-D-8S-200G family is the QSFP-DD equivalent, with a top length of 2.5 m.

Datasheet

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