Cisco N9K-C9236C — Nexus 9236C 36-Port QSFP28 100G Data Center Switch, 1RU
Technical Identity
The Cisco N9K-C9236C is the Cisco Nexus 9236C, a Nexus 9200-platform 1RU data center switch with 36 QSFP28 ports supporting 40/100 Gigabit Ethernet and up to 7.2 Tbps of switching bandwidth. Each port can be individually configured as 1x100G, 1x40G, 4x10/25G, 2x50G, or 1/10G via QSA adapter. It runs Cisco NX-OS in standalone mode. Cisco's last day to order this model was February 28, 2020 (end-of-sale), with the Nexus 9336C-FX2 as the suggested migration platform. Condition: Refurbished. Note on stock labels: one unit carries the standard PID label N9K-C9236C; the second unit is labeled with the Cisco top-assembly part number 800-45718-02 — Cisco prints internal 800-series assembly numbers on the chassis manufacturing label, and this unit is sold as an N9K-C9236C per its hardware identity. Verify the unit label on receipt.
Specifications

Brand: Cisco
Model / MPN: N9K-C9236C (Nexus 9236C)
Series: Cisco Nexus 9200 platform
Product type: Fixed data center Ethernet switch (Layer 2/3)
Ports: 36x QSFP28 40/100GbE
Per-port modes: 1x100G, 1x40G, 4x10G, 4x25G, 2x50G, or 1/10G via QSA adapter
Switching bandwidth: up to 7.2 Tbps
Operating system: Cisco NX-OS (standalone mode)
Form factor: 1RU, rack-mountable
Power / airflow: dual PSU bays; verify installed PSU/fan airflow direction per unit
Lifecycle: end-of-sale (last order date February 28, 2020, per Cisco EoL bulletin); verify remaining support milestones against the bulletin
Stock labels: one unit labeled N9K-C9236C, one labeled with Cisco assembly P/N 800-45718-02 (same hardware identity)
Condition: Refurbished

Engineering Context
The Nexus 9236C brought 36 line-rate 100G ports into a single rack unit, making it a compact spine or aggregation switch for 25/100G fabrics. Its flexible per-port breakout (4x25G, 4x10G) lets one chassis serve mixed-speed environments during 10G-to-25G migrations. As a Nexus 9200-platform switch it operates in NX-OS standalone mode; ACI fabric mode is not a 9200-platform capability.
Use Cases

100G spine or aggregation for 25G/100G leaf-spine fabrics
High-density 25G access via 4x25G breakout from QSFP28 ports
Data center interconnect and storage backbones at 40/100G
Lab and staging environments needing line-rate 100G at refurbished cost

What This Is NOT

NOT an ACI-mode switch. The Nexus 9200 platform runs NX-OS standalone only; for ACI leaf/spine roles use Nexus 9300/9500 hardware.
NOT a 400G platform. Ports are QSFP28 100G — QSFP-DD 400G optics will not operate here.
NOT the Nexus 9336C-FX2. That is a newer Cloud Scale 9300-FX2 platform with a different PID and feature set.
NOT a modular chassis. Fixed 36-port configuration with no line-card slots.
NOT a currently orderable Cisco product. End-of-sale since February 2020.
NOT supplied with optics, cables, rail kits, or software support entitlements unless explicitly stated.

Compatibility & Hard Constraints

Optics/cabling: QSFP28 100G and QSFP+ 40G transceivers, DAC/AOC, and 4x25G / 4x10G breakout assemblies per Cisco's optics compatibility matrix; 1/10G requires a QSA adapter.
Software: supported NX-OS releases per Cisco documentation for the Nexus 9236C; verify feature and license requirements for your target release.
Breakout planning: confirm per-port breakout support and any port-group restrictions in the release notes for your NX-OS version.
Airflow/power: confirm port-side intake vs. exhaust of installed fan/PSU modules matches your aisle design.
Pre-deployment verification: confirm NX-OS image, optics support, and breakout configuration before production use.

Frequently Asked Questions (FAQ)
Q. What is the Cisco N9K-C9236C?
It is the Cisco Nexus 9236C: a 1RU Nexus 9200-platform switch with 36x QSFP28 40/100GbE ports and up to 7.2 Tbps of switching bandwidth, running NX-OS standalone.
Q. Can each port of the N9K-C9236C break out?
Yes. Each QSFP28 port can be configured as 1x100G, 1x40G, 4x10/25G, 2x50G, or 1/10G with a QSA adapter, subject to NX-OS release support.
Q. Does the N9K-C9236C support Cisco ACI mode?
No. The Nexus 9200 platform runs NX-OS standalone mode only. ACI fabric roles require Nexus 9300/9500 platforms.
Q. Why is one unit labeled 800-45718-02 instead of N9K-C9236C?
Cisco prints internal top-assembly part numbers (800-xxxxx-xx) on the chassis manufacturing label. This unit's label reads 800-45718-02 and the hardware is sold as a Nexus 9236C per its hardware identity; verify the label on receipt.
Q. What is the lifecycle status of the Nexus 9236C?
Cisco's last day to order was February 28, 2020, with the Nexus 9336C-FX2 named as the migration platform. Verify remaining support milestones against Cisco's EoL bulletin.
Q. What condition is supplied by T.E.S IT-SOLUTIONS?
Refurbished. Each unit is inspected and tested where test topology is available, cleaned, and shipped in professional protective packaging from EU stock.
Why T.E.S IT-SOLUTIONS
Every N9K-C9236C unit ships with: (1) functional verification where test topology is available, (2) configuration wipe and inspection, (3) full cosmetic check, (4) professional protective packaging, (5) global B2B shipping from EU stock, (6) technical consultation for data center network design at no extra cost.
Condition: Refurbished. No optics, cables, rails, software licenses, or vendor support entitlements are included unless explicitly stated.