N9K-C9336C-FX2 – 36 Ports – rack-mountable – with QSFP-40/100-SRBD Transceiver

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N9K-C9336C-FX2

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N9K-C9336C-FX2 Description

N9K-C9336C-FX2 (Cisco Nexus 9336C‑FX2) is a 1RU 100G data center spine/aggregation switch delivering 7.2 Tbps of switching capacity and >2.4 bpps of forwarding performance. With 36 × QSFP28 ports and universal breakout (4×25G, 2×50G, native 40/100G, and QSA‑based 1/10G on most ports), it offers flexible migration from 10/40G to 25/100G fabrics. Built on Cisco Cloud Scale ASICs, the 9336C‑FX2 supports VXLAN EVPN fabrics, segment routing, and pervasive telemetry, while MACsec encryption (≥1G) provides wire‑rate physical‑layer security. Typical use cases include non‑blocking spine/aggregation for leaf‑spine designs and high‑density 100G TOR aggregation in enterprise and cloud data centers.

Product Highlights

Ports
Switching Capacity
Forwarding Rate

Key Features

High-Density 100G Switching

Delivers 7.2 Tbps non-blocking throughput with 36 × QSFP28 40/100-Gigabit Ethernet ports, supporting flexible breakout to 4×25G, 2×50G, or 1/10G via QSA, ideal for modern spine-leaf or aggregation layers.

Advanced Security with MACsec Encryption

Provides wire-rate Layer 2 encryption for all ≥1G interfaces, ensuring secure data transport in cloud data centers, enterprise cores, and inter-DC connections.

VXLAN EVPN and Segment Routing Support

Enables scalable overlay networks with multi-site VXLAN EVPN fabrics, plus efficient Segment Routing for optimized traffic engineering in large-scale deployments.

Line-Rate Telemetry and Analytics

ASIC-level real-time telemetry with microsecond granularity helps detect microbursts, monitor latency, and proactively troubleshoot network performance.

Flexible Power and Cooling Options

Supports AC, DC, and HVAC/HVDC power supplies, with port-side intake or exhaust airflow, making it adaptable to different data center designs and hot/cold aisle layouts.

Compact 1RU Form Factor with High Reliability

Saves rack space while offering hot-swappable redundant power supplies and fan trays, ensuring carrier-grade availability in mission-critical environments.

Applications Scenarios

Cloud & Hyperscale Data Centers

Serves as a high-density spine or aggregation switch for hyperscale operators needing massive east-west traffic handling and fast migration from 40G to 100G.

Enterprise Core & Campus Backbone

Acts as a secure and scalable core switch, interconnecting distribution layers with MACsec-encrypted high-speed uplinks.

Service Provider Edge & Interconnect

Deployed at carrier edge or metro aggregation points to handle large multi-tenant traffic loads with VXLAN EVPN overlays and segment routing for efficient path control.

Module Selection Guide – Cisco N9K-C9336C-FX2

  • Choose N9K-C9336C-FX2 when you need a compact 1RU 100G spine/aggregation with rich breakout (4×25G / 2×50G) and MACsec on all ≥1G ports. Ideal for non‑blocking leaf‑spine cores where security and telemetry (VXLAN EVPN, segment routing, line‑rate analytics) matter.
  • Choose N9K‑C9336C‑FX2‑E if your fabric requires Fibre Channel (16/32G) mode on the same hardware for LAN/SAN convergence. You keep the same 36 × 100G layout but gain native FC flexibility.
  • Choose N9K‑C9236C (Nexus 9200) when you need a proven 36‑port 100G platform with slightly lower power draw and very high packet rate, and you’re standardizing on the Nexus 9200 feature set. Great for straightforward 100G spines where FX2‑specific features (like MACsec everywhere) aren’t required.

Nexus 9300 40/100 GE Switches Comparison

Nexus 9336C-FX2

Nexus 9336C-FX2-E

Nexus 9332C

Nexus 9364C-GX

Nexus 9364C-H1

Usage

ACI leaf & NXOS (leaf/spine), powered by Cloud Scale

ACI leaf & NXOS (leaf/spine), powered by Cloud Scale

ACI spine & NXOS (leaf/spine), powered by Cloud Scale

ACI (leaf/spine) & NXOS (leaf/spine), powered by Cloud Scale

ACI (leaf/spine) & NXOS (leaf/spine), powered by Cloud Scale

Form factor

1 RU

1 RU

1 RU

2 RU

2 RU

100 M/1 GE/10 GE copper ports

NA

NA

NA

NA

NA

1/10 GE fiber ports

NA

NA

2

0

0

40 GE ports

36

36

32

64

64

50 GE ports

72

72

NA

128

128

100 GE ports

36

36

32

64

64

Latency (microseconds)

~1

~1

~1.3

~2.0

~2.0

MACsec & CloudSec

Yes, all ports

Yes, all ports

Yes, on last 8 ports

NA

Yes, on last 16 ports

Fibre Channel (FC)

No

Yes

No

No

No

Buffer (MB)

40

40

40

80

40

Power supply (watts); 2 per switch

1100

1100

1100

2000

1100

Typical power (watts)

337

337

296

811

605

Minimum software version

ACI-N9KDK9-13.1.2/ NXOS-703I7.3

NXOS-10.1.1 / ACI-TBD

ACI-N9KDK9-14.0/NX-OS Release 9.2(3)

NXOS-9.3.3/ACI-N9KDK9-14.2

NXOS-10.4(3)/ACI-N9KDK9-16.1.3

ACI leaf support

ACI-N9KDK9-13.1.2

TBD

N/A

ACI-N9KDK9-14.2

ACI 16.1.3

ACI spine support

N/A

N/A

ACI-N9KDK9-14.0

ACI 15.1.3

ACI 16.1.3

Orderable

Yes

Yes

Yes

Yes

Yes

SKU

N9K-C9336C-FX2

N9K-C9336C-FX2-E

N9K-C9332C

N9K-C9364C-GX

N9K-C9364C-H1

Operating system

NX-OS, ACI

NX-OS, ACI

NX-OS, ACI

NX-OS, ACI

NX-OS, ACI

Specifications

Parameter Value Parameter Value
Ports 36 × 40/100-Gbps QSFP28 Supported Speeds 1/10/25/40/100-Gbps Ethernet
Breakout Support 100G, 2×50G NRZ, 40G native, 4×10/25G (10G w/QSA), 1G w/QSA except ports 1–6 & 33–36 Switching Capacity 7.2 Tbps
Forwarding Rate Over 2.4 bpps CPU 4 cores
System Memory 24 GB SSD Drive 128 GB
System Buffer 40 MB Management Ports 1 × RJ-45, 1 × SFP+
USB Ports 1 RS-232 Serial Port 1
Power Supply Options 750W AC2, 1100W AC, 1100W DC, 1100W HVAC/HVDC Typical Power (AC) 337W
Maximum Power (AC) 719W Input Voltage (AC) 100–240V
Input Voltage (HVAC) 100–277V Input Voltage (DC) –40 to –72V
Input Voltage (HVDC) –240 to –380V Frequency 50–60 Hz
Fans 3 dual fan trays Airflow Port-side intake and exhaust
Dimensions (H × W × D) 1.72 × 17.3 × 24.5 in. (4.4 × 43.9 × 62.3 cm) Acoustics 76.2 dBA (50% fan), 85.3 dBA (70% fan), 92.3 dBA (100% fan)
Weight 18.8 lb (8.5 kg) MTBF 335,900 hours
Operating Temperature 32 to 104°F (0 to 40°C) Storage Temperature –40 to 158°F (–40 to 70°C)
Humidity 5% to 95% non-condensing Altitude 0 to 13,123 ft (0 to 4000 m)
VLANs Supported 4096 (127 reserved) VRF Instances Up to 16,000
IPv4 Routes (LPM) 896,000 IPv6 Routes (LPM) 498,000
MAC Address Entries 256,000 Multicast Routes 128,000

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Quality Certifications

Customer Reviews

Write A Review
5.0
(6 reviews)
5 Stars
6
4 Stars
0
3 Stars
0
2 Stars
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1 Stars
0
    NOC Lead
    Posted on 05/10/2024
    Verified Buyer
    5.0

    Running smoothly at 100Gbps. No errors. Solid vendor.

    Agent 47
    Posted on 22/08/2024
    Verified Buyer
    5.0

    Execution was flawless. The package was secured. Target acquired.

    Diana Burnwood
    Posted on 30/05/2024
    Verified Buyer
    5.0

    Well done. Documentation is in order. The client is satisfied.

    DC Architect
    Posted on 15/03/2024
    Verified Buyer
    5.0

    100G spine switch. Serious hardware. Arrived on a dedicated pallet. Condition: Brand New.

    CTO
    Posted on 18/01/2024
    Verified Buyer
    5.0

    Building an H100 cluster. Needed these for the fabric. Delivery speed was critical and you met it.

Questions & Answers

  • What is the Cisco N9K-C9336C-FX2 switch known for?

    A fixed-format Nexus 9000 switch with 36 high-speed QSFP ports (speed support depends on optics and breakout), ideal for compact spines or leafs needing dense 100G aggregation and flexible breakout options.

  • How does C9336C-FX2 compare to C93180YC?

    C9336C-FX2 emphasizes QSFP high-speed density, while C93180YC offers many SFP28/SFP+ ports. Choose FX2 for 100G-focused fabrics; choose 93180YC for mixed 10/25G access.

  • Does it support VXLAN EVPN?

    Yes. NX-OS on Nexus 9000 supports VXLAN EVPN fabrics with control-plane learning. Verify software feature set and scale for your deployment.

  • What about latency and buffering?

    Designed for low-latency data-center fabrics with deep enough buffers for typical spine/leaf workloads. Validate with test traffic matching your application profile.

  • Is ACI mode available?

    Certain FX2 models can be used within Cisco ACI fabrics. Confirm exact SKU compatibility and licensing with your architecture plan.

  • Can ports be broken out?

    Yes. QSFP ports commonly support breakout to multiple lower-speed interfaces using approved cables/optics; check the port-group and hardware limits.

  • How to ensure redundancy?

    Use ECMP across spines, dual-homed leaves, and MLAG/vPC for server connections. Monitor fabric with telemetry and streaming counters.

  • Any optics recommendations?

    Use SR/LR/DR/FR optics per distance needs. Keep DAC/AOC for short in-rack links and maintain spares for rapid replacement.

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