United States$5,000,000+
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Ethan Walker
5
Solid 40G line card for aggregation layers.
N9K-X9636Q-R
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Ready to Ship
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:
In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 818249714974
- Condition:
- Warranty:
- 3
- List Price:
$61,909.00
- Price:
$32,666.0047.2% off
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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
- Power Consumption
- N/A
- Weight
- N/A
- Height
- N/A
- Depth
- N/A
- Width
- N/A
- Expansion Slots
- N/A
- Form Factor
- Modular
- Operating Temperature
- 0 to 70°C
- Storage Temperature
- -40 to 85°C
- Input Voltage
- 3.3V
- Compatibility
- Cisco
- Product Type
- Network Module / Network Card
- Supported Protocols
- TCP/IP
- Data Rate
- 40Gbps
- Max Speed
- 40Gbps
- Connector Type
- SFP28
- Supported Features
- Jumbo Frames / QoS
- Interface Ports
- SFP28
- Module Type
- Switching Module
- 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
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
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 |
| Data Rate | 40Gbps | 40Gbps | 40Gbps | N/A | 40G |
| Connector Type | SFP28 | QSFP+ | SFP+ | N/A | SFP+ |
| Supported Protocols | TCP/IP | TCP/IP, Ethernet | TCP/IP, Fibre Channel | N/A | TCP/IP, iSCSI |
| Form Factor | Modular | Modular | Modular | Modular | Modular |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | N/A | 0 to 70°C |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | N/A | -40 to 85°C |
| Input Voltage | 3.3V | N/A | 3.3V | N/A | 3.3V |
| Compatibility | Cisco | Cisco | Cisco Nexus 9000 Series | Cisco Nexus 9508 | Cisco Nexus Series |
| Max Speed | 40Gbps | 40Gbps | 40Gbps | N/A | 40Gbps |
| Supported Features | Jumbo Frames / QoS | Auto-negotiation, Jumbo Frames, QoS | Auto-negotiation, Jumbo Frames, QoS | N/A | Auto-negotiation, Jumbo Frames, QoS |
| Power Consumption | N/A | N/A | N/A | N/A | N/A |
| Interface Ports | SFP28 | QSFP+ | Ethernet | N/A | SFP+ |
| Expansion Slots | N/A | N/A | N/A | N/A | N/A |
| 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 |
| Height | N/A | N/A | N/A | N/A | N/A |
| Width | N/A | N/A | N/A | N/A | N/A |
| Depth | N/A | N/A | N/A | N/A | N/A |
| Weight | N/A | N/A | N/A | N/A | N/A |
Reviews & Ratings
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.