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RG-S6990-128QC2XS – 128-Port 400GE Fixed Switch for AIGC Intelligent Computing Networks

128 x 400GE ports and 2 x 10GE ports, RDLB and GDLB of the AI-Fabric solution to improve the bandwidth and shorten the AI training time in AIGC intelligent computing scenarios

Models

RG-S6990-128QC2XS

4 RU, 128 x 400GE ports, 2 x 10GE ports

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Highlight Features

High-density 400GE switch with 128 x 200GE/400GE QSFP112 ports housed in a 4-RU enclosure
Eliminating packet loss during E2E communication through RDMA, building high-performance and low-latency data center networks
Hardware-level redundancy, ensuring service continuity and preventing network downtime
Nanosecond-level hardware failover, mitigating the impact of network faults on services and securing network stability
AI-powered intelligent O&M, making management easy and efficient

Features
Specifications
Resources
Order Information

Sales Enquiry

Features

RG-S6990-128QC2XS – 128-Port 400GE Data Center Fixed Switch

The high-speed and high-density core switch provides 128 x 400GE ports housed in a 4-RU enclosure,
delivering scalable, high-performance, and high-bandwidth services for large-scale DCI networks.

Ports

Dimensions

Eliminating Packet Loss During E2E Communication Through RDMA, Building High-Performance and Low-Latency Data Center Networks

PFC and ECN are leveraged to implement intelligent data exchange and eliminate packet loss. With the RDMA technology, data does not need to be handled by the CPU during device communication. This reduces the CPU load
and addresses network latency issues, ensuring lossless transmission of data. In addition, Remote Dynamic Load Balancing (RDLB) and Global Dynamic Load Balancing (GDLB) of the AI-Fabric solution solve the ECMP conflict caused by flow-based load balancing, improving the bandwidth and shortening the AI training time in AIGC intelligent computing scenarios.

Hardware-Level Redundancy, Ensuring Service Continuity and Preventing Network Downtime

Hot-Swappable Redundant Power Modules

Hot-Swappable Redundant Fan Modules

The switch supports 2+2 power redundancy, enables failover in seconds, and ensures network connectivity during power replacement. This provides dual protection for links.

AI-Powered Intelligent O&M
Making Management Easy and Efficient

The switch offers AI-powered automatic ECN tuning, real-time telemetry of key RoCE network metrics, visualization of endpoint status and RoCE services, along with congestion and packet loss analytics.

Specifications

Hardware Specifications

System Specifications	RG-S6990-128QC2XS
Switching capacity	102.4 Tbps
Packet forwarding rate	21,000 Mpps
Port Specifications
Service port	128 x 200GE/400GE QSFP112 ports 2 x 1GE/10GE SFP+ ports
Management port	1 x RJ45 console port 1 x RJ45 MGMT port
USB port	1 x USB 2.0 port (Type A connector)
Slot	Four power module slots Five fan module slots
Dimensions and Weight
Dimensions (W x D x H)	446 mm x 800 mm x 173.6 mm (17.56 in. x 31.5 in. x 6.84 in.)
Height	4 RU
Weight	Chassis only: 36.15 kg (79.7 lbs) Fully system: 43 kg (94.8 lbs)
Mounting option	Rack-mount
Power Supply and Consumption
Power consumption	Max: 3180 W Typical: 2339 W Static: 434 W
Power input	RG-PA1600II-F (AC input) Rated input voltage: 100 V AC to 127 V AC, 200 V AC to 240 V AC, 50/60 Hz Maximum input voltage: 90 V AC to 140 V AC, 180 V AC to 264 V AC, 47 Hz to 63 Hz Rated input current: 12 A (100 V AC to 127 V AC) 9.5 A (200 V AC to 240 V AC) Power connector: C14 RG-PA1600II-F (HVDC input) Rated input voltage: 240 V DC Maximum input voltage: 180 V DC to 300 V DC Rated input current: 9.5 A Power connector: C14
Environment and Reliability
Temperature	Operating temperature: 0°C to 40°C (32°F to 104°F) Storage temperature: –40°C to +70°C (–40°F to +158°F) Note: At altitudes ranging from 1,800 m (5,905.51 ft) to 5,000 m (16,404.20 ft), the maximum temperature decreases by 1°C (1.8°F) for every 200 m (656.17 ft) increase in elevation.
Humidity	Operating humidity: 10% RH to 90% RH (non-condensing) Storage humidity: 5% RH to 95% RH (non-condensing)
Altitude	Operating altitude ≤ 5,000 m (16,404.20 ft) Storage altitude ≤ 5,000 m (16,404.20 ft)
Cooling	Air cooling, front-to-rear airflow (port-side intake)

* indicates that the feature will be available in the future.

Software Specifications

Software Specifications	RG-S6990-128QC2XS
Layer 2 protocols	IEEE 802.3ae (10GBase), IEEE 802.3ak, IEEE 802.3an, IEEE 802.3x, IEEE 802.3ad (Link Aggregation Control Protocol), IEEE 802.1p, IEEE 802.1Q, IEEE 802.1D (STP), IEEE 802.1w (RSTP), IEEE 802.1s (MSTP), Jumbo Frame (9 KB)
Layer 3 protocols (IPv4)	BGP4, OSPFv2, RIPv1, RIPv2, LPM Routing, Policy-based Routing, Route-policy, ECMP, WCMP, VRRP
Basic IPv6 protocols	Neighbor Discovery, ICMPv6, Path MTU Discovery, DNSv6, DHCPv6, ICMPv6, ICMPv6 redirection, ACLv6, IPv6 TCP/UDP, SNMPv6, IPv6 Ping/Traceroute, IPv6 RADIUS, IPv6 Telnet/SSH, IPv6 FTP/TFTP, NTPv6, IPv6 MIB for SNMP, IPv6 VRRP, IPv6 QoS
IPv6 features	Static routing, ECMP, PBR, OSPFv3, RIPng, BGP4+
Data center features	VXLAN, BGP-EVPN RDMA PFC, ECN PFC deadlock prevention AI-powered ECN ECN overlay* RDLB, GDLB
Visualization	Telemetry sFlow
QoS	IEEE 802.1p, DSCP, and ToS mapping ACL-based traffic classification Priority marking and re-marking Multiple queue scheduling mechanisms, including SP, WRR, WFQ, DRR, SP+WRR, SP+WFQ, SP+DRR Congestion avoidance mechanisms such as WRED and tail discarding
High redundancy design	GR for RIP/OSPF/BGP, BFD, DLDP, REUP, Rapid Link Detection Protocol (RLDP), 2 + 2 power redundancy, fan redundancy, and hot swapping of line cards and power modules
Security features	Network Foundation Protection Policy (NFPP), CPU Protection Policy (CPP), RADIUS/TACACS, IPv4/IPv6 packet filtering by basic ACL, extended ACL or VLAN-based ACL, cleartext and MD5-based authentication for OSPF, RIPv2, and BGPv4 packets, telnet from specified IP addresses, broadcast packet suppression, and hierarchical user management
Management mode	SNMP v1/v2c/v3, telnet, console, MGMT, RMON, SSHv1/v2, FTP/TFTP, NTP clock, Syslog, SPAN/RSPAN/ERSPAN, ZTP, NETCONF, Python, fan and power alarm, temperature alarm
Other protocols	DHCP Client, DHCP Relay, DHCP Server, DNS Client, ARP Proxy, and Syslog

* indicates that the feature will be available in the future.

Resources All Resources

Learn about Products or Solutions

Product Datasheet

Installation

Installation Guide

Order Information

Take the following steps to configure an RG-S6990-128QC2XS:

Select the chassis.
Select optical transceivers based on the port types and quantity required.

Models marked with asterisks (*) in the ordering information will be available in the future.

Chassis, Fan Modules, and Power Modules

Model	Description
RG-S6990-128QC2XS	Fixed 128 x 400GE ports, 2 x 10GE ports, four power module slots, and five fan module slots
RG-PA1600II-F	Power module, hot swappable 2 + 2 redundancy, front-to-rear airflow
FAN80-180F	Fan module, hot swappable 4 + 1 redundancy, front-to-rear airflow

1GE Optical Transceivers

Model	Description
GE-SFP-LX20-SM1550-BIDI	1GE LX transceiver, SFP form factor, BIDI LC, 1550 nm, 20 km (65,616.80 ft.) over SMF
GE-SFP-LX20-SM1310-BIDI	1GE LX transceiver, SFP form factor, BIDI LC, 1310 nm, 20 km (65,616.80 ft.) over SMF
GE-SFP-LX03-SM1550-BIDI-I	1GE LX transceiver, SFP form factor, BIDI LC, 1550 nm, 3 km (9,842.52 ft.) over SMF
GE-SFP-LX03-SM1310-BIDI-I	1GE LX transceiver, SFP form factor, BIDI LC, 1310 nm, 3 km (9,842.52 ft.) over SMF
GE-SFP-LH40-SM1550-BIDI	1GE LH transceiver, SFP form factor, BIDI LC, 1550 nm, 40 km (131,233.59 ft.) over SMF
GE-SFP-LH40-SM1310-BIDI	1GE LH transceiver, SFP form factor, BIDI LC, 1310 nm, 40 km (131,233.59 ft.) over SMF
MINI-GBIC-ZX80-SM1550	1GE ZX transceiver, SFP form factor, duplex LC, 1550 nm, 80 km ( 262,467.20 ft.) over SMF

10GE Optical Transceivers

Model	Description
XG-SFP-AOC5M	10GE AOC cable, SFP+ form factor, 5 m (16.40 ft.)
XG-SFP-LR-SM1310	10GE LR transceiver, SFP+ form factor, duplex LC, 1310 nm, 10 km (32,808.40 ft.) over SMF
XG-SFP-iLR-SM1310-I	10GE LR transceiver, SFP+ form factor, duplex LC, 1310 nm, 1.4 km (4,593.18 ft.) over SMF

100GE Optical Transceivers

Model	Description
100G-QSFP-ER4-SM1310	100GE ER4 transceiver, QSFP28 form factor, duplex LC, 1310 nm, 40 km (131,233.59 ft.) over SMF
100G-QSFP-iLR4-SM1310	100GE iLR4 transceiver, QSFP28 form factor, duplex LC, 1310 nm, 2 km (6,561.68 ft.) over SMF
100G-QSFP-LR4-SM1310	100GE LR4 transceiver, QSFP28 form factor, duplex LC, 1310 nm, 10 km (32,808.40 ft.) over SMF
100G-QSFP-SR-MM850	100GE SR transceiver, QSFP28 form factor, MPO, 850 nm, 100 m (328.08 ft.) over OM4 MMF

200GE Optical Transceivers

Model	Description
200G-Q56-SR4-MM850(D)	200GE SR4 transceiver, QSFP56 form factor, MPO12/APC, 850 nm, 100 m (328.08 ft.) over OM4 MPO MMF, CMIS-compliance
200G-Q56-SR4-MM850	200GE SR4 transceiver, QSFP56 form factor, MPO12/APC, 850 nm, 100 m (328.08 ft.) over OM4 MPO MMF, SFF-8636-compliance

400GE Optical Transceivers

Model	Description
400G-Q112-DR4-SM1310	400GE DR4 transceiver, QSFP112 form factor, MPO-12 APC, 1310 nm, 500 m (1,640.42 ft.) over SMF
400G-Q112-VR4-MM850	400GE VR4 transceiver, QSFP112 form factor, MPO-12 APC, 850 nm, 50 m (164.04 ft.) over OM4 MMF

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