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N9K-X9636Q-R
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NEXUS 9500R BUFFER LINECARD 36P 40G QSFP+
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Name:
N9K-X9636Q-R
- Description:
- NEXUS 9500R BUFFER LINECARD 36P 40G QSFP+
- Rating:
Added to cart 28 times recently
- Availability:
2 In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 818249714974
- Condition:
Certified Refurbished
Professionally inspected, bench-tested, and firmware-verified, with configurations wiped. Restored to full working order and backed by our warranty.
- Warranty:
- 3
- List Price:
$61,909.00
- Price:
$32,666.0047.2% off
Quantity:
1
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N9K-X9636Q-R Overview
N9K-X9636Q-R is a high-performance switch module engineered for modern data center environments. It is a modular network card designed to deliver high-speed data transfer at up to 40Gbps using SFP28 connectors, ensuring robust connectivity and low latency for critical applications. The module is built to support TCP/IP protocol communications and is compatible with Cisco Nexus chassis, making it an ideal choice for scaling network infrastructures.
Designed for seamless installation in a modular chassis, N9K-X9636Q-R expands data center capacity by upgrading server network interfaces and connecting to high-speed networks reliably. Its advanced design emphasizes efficiency and performance in demanding enterprise deployments, offering a practical solution for organizations looking to achieve high throughput and reliability in their network operations.
N9K-X9636Q-R price is $32,666.00, a 47.2% saving from the Cisco list price of $61,909.00. N9K-X9636Q-R is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for N9K-X9636Q-R for additional pricing. Browse the full Cisco Nexus 9000 Switch Modules & Cards series or explore all Cisco products.
N9K-X9636Q-R Specifications
- Product Type
- Network Module / Network Card
- Brand
- Cisco
- Module Type
- Switching Module
- Data Rate
- 40Gbps
- Connector Type
- SFP28
- Supported Protocols
- TCP/IP
- Form Factor
- Modular
- Operating Temperature
- 0 to 70°C
- Storage Temperature
- -40 to 85°C
- Input Voltage
- 3.3V
- Compatibility
- Cisco
- Max Speed
- 40Gbps
- Supported Features
- Jumbo Frames / QoS
- Interface Ports
- SFP28
- Product Name
- Cisco Nexus N9K-X9636Q-R
N9K-X9636Q-R Use Case
High-Density Spine Switch Deployment in Leaf-Spine Architecture
Scenario: Enterprise and cloud data centers running EVPN-VXLAN leaf-spine fabrics. Deploy the N9K-X9636Q-R NEXUS 9500R buffer linecard as the central spine switch connecting up to 36 leaf switches at 40G QSFP+. Key Benefits: - 2.3 Tbps non-blocking throughput for high-density interconnect - Deep packet buffers absorb microbursts, ensuring zero-loss performance - Sub-microsecond latency and seamless fabric expansion
Burst-Resilient Multi-Tenant Cloud Service Infrastructure
Scenario: Service providers offering IaaS/PaaS with dynamic VM workloads. The N9K-X9636Q-R ensures tenant isolation and QoS by leveraging 36×40G QSFP+ ports and extensive on-chip buffering. It handles unpredictable traffic surges and oversubscription, maintaining SLAs. Key Benefits: - Scalable multi-tenant connectivity up to 1.44 Tbps per linecard - Enhanced QoS with buffer allocation per tenant to prevent noisy neighbors - Simplified network slicing with NX-OS programmability
Ultra-Low Latency Financial Trading Network
Scenario: High-frequency trading firms requiring deterministic, burst-free data delivery between matching engines and market gateways. The N9K-X9636Q-R’s deep buffer linecard and wire-speed forwarding optimize 40G QSFP+ links for market data feeds. Key Benefits: - Consistent sub-50μs latency under load - Hardware-based microburst absorption for predictable performance - 36-port 40G fabric for high-throughput trade execution
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Product Comparison Table 
| N9K-X9636Q-R |  N9K-C9508-FM |  N9K-X9636C-RX |  N9K-C9508-FM-S |  N9K-M6PQ-E | |
|---|---|---|---|---|---|
| Product Type | Network Module / Network Card | Fabric Module | Network Module | Network Module | Network Module / Network Card |
| Module Type | Switching Module | Ethernet | Ethernet | Fabric Module | Ethernet |
| Form Factor | Modular | Modular | Modular | Modular | Modular |
| Compatibility | Cisco | Cisco | Cisco Nexus 9000 Series | Cisco Nexus 9508 | Cisco Nexus Series |
| Product Name | Cisco Nexus N9K-X9636Q-R | Cisco Nexus 9508-FM Fabric Module | Cisco Nexus N9K-X9636C-RX | Cisco Nexus 9508 Fabric Module (N9K-C9508-FM-S) | Cisco Nexus 9000 Series N9K-M6PQ-E |
Compliance & Warranty
100% Genuine Product Guarantee
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
Up to 3-Year Warranty Coverage
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
Hassle-Free RMA & Returns
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Rigorously Tested & Quality Assured
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Expert Technical Support
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
Fast Global Delivery
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Reviews & Ratings
E
Ethan Walker
5
Solid 40G line card for aggregation layers.
B
Bushra Khan
5
Stable links and predictable latency.
J
Jonas Richter
5
Good option for legacy 40G environments.
K
Kelly Morgan
5
Installation was straightforward.
I
Imran Siddiq
5
Reliable Nexus component.
Questions & Answers
What is the Cisco Nexus N9K-X9636Q-R buffer linecard?
The Cisco Nexus N9K-X9636Q-R is a high-performance buffer linecard with 36 QSFP+ ports at 40 Gbps each, engineered for the Nexus 9500R platform to deliver scalable, low-latency Ethernet connectivity.
How many ports and what interface speeds does the N9K-X9636Q-R support?
The N9K-X9636Q-R provides 36 fixed QSFP+ ports, each operating at 40 Gbps, for a total aggregate bandwidth of 1.44 Tbps in a Cisco Nexus 9500R chassis.
Is the N9K-X9636Q-R compatible with all Cisco Nexus 9500R chassis models?
Yes. The N9K-X9636Q-R is fully compatible with Cisco Nexus 9504R, 9508R, and 9516R chassis running NX-OS Release 9.3(7) or later.
What buffer capacity does the Cisco Nexus N9K-X9636Q-R offer?
The N9K-X9636Q-R delivers deep packet buffers totaling 36 MB per port, optimizing congestion management and minimizing packet loss during traffic spikes.
Does the N9K-X9636Q-R support 4x10G breakout configurations?
Yes. Each 40 Gbps QSFP+ port on the N9K-X9636Q-R can be configured as 4×10 Gbps using Cisco QSFP-to-SFP+ breakout cables or compatible optics.
What is the typical power consumption of the N9K-X9636Q-R?
Under typical load, the Cisco Nexus N9K-X9636Q-R consumes approximately 550 W, though actual power draw may vary with environmental conditions and traffic patterns.
Which airflow direction is required for the N9K-X9636Q-R installation?
The N9K-X9636Q-R requires a front-to-back airflow orientation, in accordance with the Cisco Nexus 9500R chassis cooling design.
What are the operating temperature and humidity ranges for the N9K-X9636Q-R?
The linecard operates reliably in ambient temperatures from 0 °C to 40 °C and relative humidity of 10% to 85% non-condensing.
Which NX-OS software features does the N9K-X9636Q-R support?
The N9K-X9636Q-R supports key NX-OS features including TRILL, VXLAN EVPN, BGP, QoS, CoPP and advanced telemetry for virtualization and analytics.
How do I install the N9K-X9636Q-R linecard in a Nexus 9500R chassis?
To install, power down the chassis, slide the N9K-X9636Q-R into an empty linecard slot, secure with captive screws, power up, and verify status via the NX-OS CLI.
What warranties and support options are available for the N9K-X9636Q-R?
Cisco provides a limited lifetime hardware warranty and 90 days of TAC support; extended coverage is available through Cisco Smart Net Total Care.
Where can I download software images and documentation for the N9K-X9636Q-R?
Software images, release notes, and configuration guides are available on Cisco’s official website under the Nexus 9500R product support section.
Can the N9K-X9636Q-R be deployed alongside other Nexus 9500R linecards?
Yes. The N9K-X9636Q-R can coexist with other Nexus 9500R linecards in the same chassis, provided all modules run a common NX-OS release.
What data center use cases benefit most from the N9K-X9636Q-R?
The N9K-X9636Q-R excels in high-density east-west traffic, spine-leaf architectures, virtualization and HPC environments requiring low-latency, lossless Ethernet.
How does the buffer architecture of the N9K-X9636Q-R enhance network performance?
Its deep per-port buffering absorbs traffic bursts and microbursts, ensuring consistent throughput and reducing packet drops under congestion.