• Cisco UCSX-FI-6536-D-U 36-port QSFP28 40/100G switch in black
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Cisco

Cisco UCSX-FI-6536-D-U | 36x QSFP28 40/100G (4x25/10G breakout), IMM, Intersight Managed Mode

UCSX-FI-6536-D-U

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Description

High-density 36-port 40/100G fabric interconnect for UCS domains in Intersight Managed Mode (IMM). Delivers low-latency, line-rate switching for unified fabric (Ethernet/FCoE) and scalable northbound aggregation using QSFP28 optics or DAC/AOC, with flexible 4x25G and 4x10G breakouts per port. Ideal for UCS X-Series and modern data center leaf/spine designs.

Features

- 36x QSFP28 for flexible 40/100G connectivity
- Native 4x25G and 4x10G breakout for server or ToR fan-out
- Optimized for UCS X-Series in Intersight Managed Mode
- Unified fabric with FCoE to reduce infrastructure complexity
- Line-rate, low-latency switching for modern data center fabrics
- Redundant, hot-swappable cooling and power for high availability
- Cloud-based life-cycle management via Cisco Intersight

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

- Ports: 36x QSFP28 40/100GbE
- Breakout support: 4x25G or 4x10G per QSFP28 (with appropriate breakout cables)
- Operating mode: Intersight Managed Mode (IMM) for UCS X-Series
- Fabric: Unified Ethernet with FCoE support
- Throughput: Line-rate on all ports
- Optics: QSFP28 SR4/LR4/DR/CWDM4 and QSFP28 DAC/AOC supported (model dependent)
- Redundancy: Hot-swappable, redundant fans and power supplies
- Management: Cisco Intersight cloud-based management and APIs
- Use cases: UCS domain aggregation, leaf/spine, high-performance east–west traffic
- PoE: Not supported

FAQs

Q: What optics and cables are supported?
A: QSFP28 100G/40G modules and QSFP28 DAC/AOC are supported. Ports can break out to 4x25G or 4x10G using appropriate breakout cables.

Q: Does this require Intersight Managed Mode (IMM)?
A: Yes. It is designed for UCS domains operating in Intersight Managed Mode for UCS X-Series.

Q: Can it carry FCoE traffic?
A: Yes. It supports unified fabric with Ethernet and FCoE to simplify converged I/O designs.

Q: Is this suitable as a spine or aggregation switch?
A: Yes. The 36x 100G QSFP28 ports make it suitable for high-bandwidth aggregation or spine roles.

Q: Does it provide PoE?
A: No. PoE is not supported on QSFP28 ports.

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