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RG-S6920-4C – Next-Generation Data Center 100GE Switch with 100GE/400GE Line Cards

Compared with the traditional networking with modular core switches, the entire network with RG-S6920-4C switches uses the Clos architecture, reducing the TCO by 25% and power consumption by 31%. Furthermore, RG-S6920-4C switches help build stable and lossless networks.

Highlight Features
  • Diverse ports, four service slots, up to 128 × 100GE ports or 32 × 400GE QSFP-DD ports

  • Hardware-level redundancy, ensuring service continuity

  • Lossless Ethernet, ensuring zero packet loss during RDMA E2E communication

  • Telemetry-based network monitoring and automated O&M, making management simple and efficient

  • Highly-efficient heat dissipation and energy saving, with power consumption less than 1950 W and power conversion efficiency up to 94%

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Data Center 100GE Core Switch RG-S6920-4C

Four service slots, with 100GE and 400GE line cards, allowing for easy expansion and satisfying future bandwidth expansion needs
Various ports, up to 128 × 100GE ports or 32 × 400GE QSFP-DD ports., which are fit for different scenarios of data center networks

Hardware-level Redundancy, Ensuring Service Continuity

Hot-Swappable Redundant Power Modules

Hot-Swappable Redundant Fan Modules

Power modules in 2+2 redundancy mode, failover in seconds, and power module replacement without
network interruption, providing double protection for links

Lossless Ethernet with RDMA E2E Communication
and Zero Packet Loss

With RDMA technology, data does not need to be handled by the CPU during device communication. This reduces the CPU burden
and effectively solves the network latency problem.
PFC+ECN, intelligent data exchange, and packet loss prevention, ensuring lossless data transmission

Telemetry-based Network Monitoring and Automated O&M,
Making Management Simple and Efficient

The switch enabled with telemetry provides clear data status and hierarchy.
The switch uses the push mode to proactively collect and push information and to provide sub-second-level network monitoring in real time,
making network management more efficient and accurate.


Hardware Specifications

System Specifications



100GE/400GE ports

Expansion Module Slots

Four expansion module slots, each supporting the line card with up to 128 × 100GE ports or 32 × 400GE QSFP-DD ports.

Expansion Modules

Four power modules

Six fan modules

Management Port

One management port, one console port, and one USB port, compliant with the USB2.0 standard

Switching Capacity

25.6 Tbps

Packet Forwarding Rate

8,000 Mpps

802.1Q VLAN


Dimensions and Weight

(W × D × H)

442 mm x 735 mm x 173.6 mm (17.40 in. x 28.94 in. x 6.83 in., 4 RU)


34.25 kg (75.51 lbs., including all line cards, power modules, and fans)

Power Supply and Consumption

Maximum Power Consumption

● Max: 1,950 W

● Typical: 1,469 W

● Static: 516 W



● Rated voltage: 110 V AC/220 V AC

● Rated voltage range: 100 V AC to 240 V AC, 50 Hz to 60 Hz

● Max voltage range: 90 V AC to 264 V AC, 47 Hz to 63 Hz

High-Voltage DC

Input voltage range: 180 V DC to 300 V DC

Environment and Reliability

Operating Temperature

0ºC to 40ºC (32ºF to 104ºF)

Storage temperature

–40 °C to +70 °C (–40 °F to +158 °F)

Operating Humidity

10% RH to 90% RH (Non-condensing)

Storage humidity

5% to 95% RH (non-condensing)


Operating altitude: up to 5,000 m (16,404.20 ft.)

Storage altitude: up to 5,000 m (16,404.20 ft.)


Software Specifications

Software Specifications


Layer 2 Protocols

IEEE802.3ad (Link Aggregation Control Protocol), IEEE802.1p, IEEE802.1Q, IEEE802.1D (STP), IEEE802.1w (RSTP), IEEE802.1s (MSTP), IGMP Snooping, MLD Snooping, jumbo frame (9 KB), IEEE802.1ad (QinQ and selective QinQ), GVRP

Layer 3 Protocols (IPv4)

BGP4, OSPFv2, RIPv1, RIPv2, MBGP, LPM routing, PBR, routing policy, ECMP, WCMP, VRRP, IGMP v1/v2/v3, DVMRP, PIM-SSM/SM/DM, MSDP, Any-RP

IPv6 Protocols

Neighbor discovery, ICMPv6, path MTU discovery, DNSv6, DHCPv6, ICMPv6, ICMPv6 redirection, ACLv6, TCP/UDP for IPv6, SNMP v6, Ping/Traceroute v6, IPv6 RADIUS, Telnet/SSH v6, FTP/TFTP v6, NTP v6, IPv6 MIB support for SNMP, VRRP for IPv6, IPv6 QoS

IPv6 Features

Static routing, ECMP, PBR, OSPFv3, RIPng, BGP4+, MLDv1/v2, PIM-SMv6, manual tunnel and IPv4 over IPv6 tunnel

Data Center Features




PFC deadlock prevention


* ECN overlay







Standard IP-based ACL, extended MAC-based ACL, extended IP-bsaed ACL, expert-level ACL, ACL 80, IPv6 ACL, ingress/egress ACL, ACL logging, ACL counter (ingress and egress counters are supported in interface or global configuration mode), ACL re-marking, global ACL, ACL-based redirection, displaying ACL resources, processing first facket of TCP handshake when binding the ACL to restrict SIP, matching 5-tuple of pass-by VXLAN inner IP packets against the ACL, matching the IP flag and DSCP fields of VXLAN inner packets against the expert-level ACL


802.1p, DSCP, and ToS mapping
ACL-based traffic classification
Priority marking/remarking
Multiple queue scheduling mechanisms, including SP, WRR, DRR, SP+WRR, and SP+DRR
Congestion avoidance mechanisms such as WRED and tail discarding

High Availability Design

GR for RIP/OSPF/BGP, BFD, DLDP, REUP, Rapid Link Detection Protocol (RLDP), 2+2 power redundancy, fan redundancy, and hot swappable line cards and power modules

Security Features

Network Foundation Protection Policy (NFPP), CPU Protection Policy (CPP), DDoS attack defense, unauthorized packet detection, data encryption, source IP spoofing defense, IP scanning defense, RADIUS/TACACS, IPv4/v6 packet filtering by basic ACL, extended ACL or VLAN-based ACL, cleartext and MD5-based authentication for OSPF, RIPv2, and BGPv4 packets, Telnet login from specified IP addresses, uRPF, broadcast packet suppression, DHCP snooping, ARP spoofing defense, ARP check, and hierarchical user management

Management Mode

SNMP v1/v2c/v3, Telnet, console, MGMT, RMON, SSHv1/v2, FTP/TFTP, NTP, Syslog, SPAN/RSPAN/ERSPAN, ZTP, NETCONF, Python, fan and power alarm, overheat alarm, and configuration rollback

Other Protocols

DHCP client, DHCP relay, DHCP server, DNS client, UDP relay, proxy ARP, and syslog


Safety and Regulatory Compliance




● IEC 62368-1

● EN 62368-1

● EN IEC 62368-1

● BS EN IEC 62368-1

● UL 62368-1

● CSA C22.2#62368-1

● GB 4943.1

Electromagnetic Compatibility (EMC)

● EN 55032

● EN 55035

● EN IEC 61000-3-2

● EN IEC 61000-3-3

● EN 61000-3-3

● ETSI EN 300 386

● EN 300 386

● ICES-003 Issue 7

● ICES-003 Issue 6

● ANSI C63.4-2014

● FCC CFR Title 47, Part 15, Subpart B


● CISPR 32

● GB/T 9254.1


● 2011/65/EU EN 50581

● 2012/19/EU EN 50419

● (EC) No.1907/2006

● GB/T 26572

*For more country-specific regulatory information and approvals, contact your local sales agency.

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Order Information

Chassis, Fan Modules, and Power Modules 




Four expansion slots, four power module slots, and six fan module slots
The power module model is RG-PA1200I-F and the fan model is M2EFAN I-F.


Hot swappable power module, 2+2 redundancy, and front-to-rear airflow


Hot swappable fan module, 5+1 redundancy, and front-to-rear airflow


Expansion Modules




Line card with 32 x 40GE/100GE QSFP28 ports


Line card with 16 x 100GE QSFP28 ports and 4 x 400GE QSFP-DD ports


Line card with 8 x 400G QSFP-DD ports


400GBASE Series Optical Transceivers




400G DR4 transceiver, QSFP-DD form factor, MPO-12 APC, 1310 nm, 500 m (1,640.42 ft.) over SMF


400G FR4 transceiver, QSFP-DD form factor, Duplex LC, 1310 nm, 2 km (6,561.68 ft.) over SMF


400G SR8 transceiver, QSFP-DD form factor, MPO-16 APC, 850 nm, 100 m (328.08 ft.) over MMF


400G AOC cable, QSFP-DD form factor, X=3 m/5 m/10 m/15 m/20 m /30 m/50 m


200GBASE Series Optical Transceivers 




200G SR4 transceiver, QSFP56 form factor, MPO-12/APC, 850 nm, 100 m (328.08 ft.) over OM4 MMF, in compliance with CMIS


100GBASE Series Optical Transceivers




100G SR transceiver, QSFP28 form factor, MPO, 850 nm, 100 m (328.08 ft.) over MMF


100G iLR4 transceiver, QSFP28 form factor, Duplex LC, 1310 nm, 2 km (6,561.68 ft.) over SMF


100G LR4 transceiver, QSFP28 form factor, Duplex LC, 1310 nm, 10 km (32,808.40 ft.) over SMF


100G ER4 transceiver, QSFP28 form factor, Duplex LC, 1310 nm, 40 km (131,233.59 ft.) over SMF


100G AOC cable, QSFP28 form factor, 10 m (32.81 ft.)


100G AOC cable, QSFP28 form factor, 5 m (16.40 ft.)


40GBASE Series Optical Modules

Product Model



40G iLR4 transceiver, QSFP+ form factor, Duplex LC, 2 km (6,561.68 ft.) over SMF


40G LR4 transceiver, QSFP+ form factor, Duplex LC, 10 km (32,808.40 ft.) over SMF


40G LSR transceiver, QSFP+ form factor, MPO, 400 m (1,312.34 ft.) over MMF


40G SR transceiver, QSFP+ form factor, MPO, 150 m (492.13 ft.) over MMF


40G LX4 transceiver, QSFP+ form factor, Duplex LC connector, 150 m (492.13 ft.) over OM3/OM4 MMF, or 2 km (6,561.68 ft.) over SMF


40G AOC cable, QSFP+ form factor, 30 m (98.43 ft.)


40G AOC cable, QSFP+ form factor, 5 m (16.40 ft.)

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