Name:

Network-Switch NS-S6990-128QC2XS 128×400GE QSFP112 AIGC Data Center Switch

Name: Network-Switch NS-S6990-128QC2XS 128×400GE QSFP112 AIGC Data Center Switch
Brand: Network-Switch & Ruijie
SKU: NS-RGS6990-128QC2XS
Price: 75068.0 USD
Availability: InStock
Rating: 5.0 (1 reviews)

Model:

RG-S6990-128QC2XS

Detail:

Layer 3, 128×400GE QSFP112, 2×10GE SFP+, 102.4 Tbps switching, 21,000 Mpps forwarding, RDMA, PFC, ECN, 4RU.

Price:

$75,068.00 USD

Availability:

In Stock Pre order Out of stock

Condition:

New

Warranty:

30-Day Returns | 30-Day Exchange

Shipping:

Express Shipping to 3-8 Days, via DHL, UPS, etc.

Payment:

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Ruijie RG-S6990-128QC2XS Modular Data Center Core Switch

The Ruijie RG-S6990-128QC2XS is a next-generation, ultra-high-performance modular data center core switch, purpose-built for cloud-scale data centers, carrier networks, and large enterprise backbones.

Equipped with 128 × 100GE QSFP28 ports and 2 × 400GE QSFP-DD ports, this switch delivers massive switching capacity and flexibility for scalable, high-density network environments.

With full Layer 2/3 protocol support, rich virtualization features, and advanced reliability mechanisms, the NS-S6990-128QC2XS sets a new standard for performance, availability, and future-proof design in modern networking infrastructure.

Overview

Highlights

High-Density Port Configuration: Offers 128 × 100GE QSFP28 and 2 × 400GE QSFP-DD ports, enabling exceptional bandwidth aggregation and spine-core scalability.
Massive Switching Capacity: Delivers a switching capacity of up to 25.6 Tbps, supporting full line-rate forwarding on all ports simultaneously.
400G-Ready Architecture: Provides native 400GE support for next-gen data center uplinks and interconnects.
Advanced Layer 2/3 Support: Supports BGP, OSPF, IS-IS, MPLS, and Segment Routing for carrier-grade routing and interoperability.
Cloud Networking Features: Fully supports VXLAN, EVPN, and virtualization technologies for flexible, multi-tenant cloud environments.
High Availability: Features redundant control planes, hot-swappable line cards and power modules, and ISSU (In-Service Software Upgrade) for zero-disruption operations.
Comprehensive Security: Equipped with ACLs, control plane protection, ARP inspection, and MAC security for robust access and data protection.
Energy-Efficient & Silent: Intelligent fan speed adjustment and low-power optical modules reduce operating costs and noise levels.

Recommended Accessories

Product Model	Category	Description
QSFP-100G-LR4	Optical Module	100GBASE-LR4 QSFP28, 1310nm, single-mode fiber, 10km
QSFP-100G-ER4	Optical Module	100GBASE-ER4 QSFP28, 1550nm, single-mode fiber, 40km
QSFP-DD-400G-LR8	Optical Module	400GBASE-LR8 QSFP-DD, 1310nm, single-mode fiber, 10km
QSFP-DD-400G-DR4	Optical Module	400GBASE-DR4 QSFP-DD, single-mode fiber, 500m
CAB-QSFP28-QSFP28	Direct Attach	100G DAC cable, QSFP28 to QSFP28, 1m/3m/5m
CAB-QSFP-DD-QSFP-DD	Direct Attach	400G DAC cable, QSFP-DD to QSFP-DD, 1m/3m

Comparison with Similar Core Switches

Feature	RG-S6990-128QC2XS	RG-S6980-64QC	RG-S6510-48GT4XS
100GE Ports	128 × QSFP28	64 × QSFP28	—
400GE Ports	2 × QSFP-DD	None	None
Switching Capacity	25.6 Tbps	12.8 Tbps	176 Gbps
Modular Design	Yes (Chassis)	Fixed	Fixed
Cloud Virtualization	VXLAN, EVPN	VXLAN	—
Use Case	Data Center Core	Aggregation/Core	Access Layer

Specifications

Parameter	Specification
Model	RG-S6990-128QC2XS
Port Configuration	128 × 100GE QSFP28, 2 × 400GE QSFP-DD
Switching Capacity	Up to 25.6 Tbps
Forwarding Rate	Up to 19,048 Mpps
Routing Protocols	Static, OSPF, BGP, IS-IS, MPLS, Segment Routing
Virtualization	VXLAN, EVPN, VRF, GRE tunnels
MAC Address Table	Up to 512K entries
Jumbo Frame Support	Up to 9600 bytes
Security Features	ACLs, port security, ARP inspection, CP protection
High Availability	Hot-swappable components, ISSU, redundant fabrics
Management	SNMP v1/v2/v3, CLI, NETCONF, RESTful API, Telemetry
Operating Temperature	0°C to 45°C (32°F to 113°F)
Dimensions (W×D×H)	442 mm × 600 mm × 133 mm
Weight	≤ 28 kg
Power Redundancy	Dual hot-swappable power modules
Warranty	Limited lifetime warranty

More Details

Quality Certifications

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Warranty

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Frequently Questions and Answers

Q1: What port density does the RG‑S6990‑128QC2XS offer?

A: The switch provides 128× QSFP112 ports (supporting 200 GE/400 GE) plus 2× 10 GE SFP+ ports for management and uplink.

Q2: What is the switching capacity and forwarding rate of this switch?

A: It delivers a massive 102.4 Tbps switching capacity and a forwarding rate of up to 21,000 Mpps .

Q3: How does the RG‑S6990 ensure low-latency and packet loss-free communication?

A: It leverages RDMA, PFC, and ECN to bypass CPU processing and support end-to-end lossless transport, ideal for AI and data center workloads .

Q4: What redundancy features are built into the RG‑S6990?

A: The chassis includes 2+2 hot-swappable power supplies and 4+1 hot-swappable fans, enabling hardware-level redundancy and nanosecond‑level failover .

Q5: What AI-based intelligent O&M functions does the switch offer?

A: It supports AI-powered auto ECN tuning, real-time telemetry, endpoint visualization, and congestion analytics via AI‑Fabric .

Q6: What hardware interfaces are available on this switch?

A: It includes service ports (128× QSFP112), management interfaces (1× RJ45 console, 1× RJ45 management), USB‑A port, plus multiple power and fan module slots .

Q7: What are its physical dimensions and power consumption?

A: The chassis is 4 RU (446×800×173.6 mm), weighs ~43 kg fully loaded, and consumes up to ~3.18 kW (typical ~2.34 kW) .

Q8: What is the target deployment scenario for the RG‑S6990?

A: Designed as a high-density data center core switch, it's ideal for AI‑Fabric networks, large enterprise backbones, cloud‑scale data centers, and DCI environments .

Q9: Does it support Layer 2 and Layer 3 features?

A: Yes, it supports full Layer 2/3 protocols including VXLAN, EVPN, BGP, OSPF, IS‑IS, MPLS, and Segment Routing .

Q10: What high-availability and maintenance features does it implement?

A: It offers ISSU (In-Service Software Upgrade), hot-swappable modules, redundant fabrics, and modular design for seamless upgrades and high availability .

Q11: What advanced security measures are included?

A: Security features include ACLs, control-plane protection, ARP inspection, MAC security, and secure management protocols .

Q12: What management protocols and interfaces are supported?

A: Management is supported via CLI, SNMP v1/2/3, NETCONF, RESTful API, and telemetry interfaces .

Q13: Can the RG‑S6990 integrate with optical modules and interconnect fabrics?

A: Yes—compatible with QSFP28 100G and QSFP-DD 400G optical modules for high-speed spine-core interconnectivity .

Q14: What rack‑mount and form‑factor details are available?

A: It is built as a 4‑RU rack‑mount chassis weighing ~43 kg fully equipped; space-efficient and robust .

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Returns

You have the right to return products purchased from Network-switch.com under the following conditions:

Eligibility for Return: Items can be returned within 30 days from the date of delivery, provided that the product is in its original condition, unused, and in the original packaging.
Non-returnable Items: Certain items such as personalized or custom-made products, and items marked as non-returnable at the time of purchase, cannot be returned.
Return Process: To initiate a return, please contact our customer support team at help@network-switch.com. You will be provided with instructions on how to return the product and obtain a return authorization number if necessary.

Refunds

Refund Process: Once we receive your returned item and inspect it, we will process your refund to the original method of payment within 7 business days.
Refund Conditions: Refunds will be issued for the purchase price of the item, excluding any shipping, handling, or other additional fees. If the product is returned damaged, used, or missing parts, a partial refund may be issued.

Exchanges

If you would prefer to exchange an item for a different size, color, or model, please follow the same return process. Once we receive the returned product, we will send the replacement at no additional charge, based on availability.

Shipping Costs

Return Shipping Fees: You are responsible for paying the return shipping costs unless the item is defective, damaged, or incorrect.
Refund for Shipping Costs: Shipping costs are non-refundable, except in the case of defective or incorrect items.
Restocking Fees: You would be chagred about 30% of the product price when return the item, unless the item is defective, damaged, or incorrect.

Damaged or Incorrect Items

If you receive a damaged or incorrect item, please contact our customer service team within 7 days of receiving the product. We will exchange once the return is received.

Contact Us

If you have any questions or concerns about returns or refunds, please contact us at:
Email: help@network-switch.com

Before returning any products, please contact us to explain the issues you are experiencing. In many cases, we can resolve the problem through technical support, and you won't need to return the product.

If there are irreparable defects in the device, you can return it to us for repair or replacement under our twelve-month warranty. Simply reach out to us, and we will provide you with a return code, our return address, and any additional instructions.

Please do not return any items without first contacting us. We will guide you through the process, including the appropriate shipping methods.