M2-S6920-4S Data Center Switch

The M2-S6920-4S is a new-generation fixed switch released by Micas Networks for AI and other application scenarios. It is highlighted by its high performance and high density.

Designed based on a single 12.8T chip, the M2-S6920-4S switch provides up to 128 x 100GbE physical ports in the space of 4 RU. It can be used with the M2-S6920-4S series switches to establish small to super-large spine-leaf architecture data center networks.

This product offers adjustable L2/L3 resource allocation capabilities for different types of networks and monitoring and O&M functions (such as INT/Telemetry/ZTP) for automatic monitoring and O&M. Used with the M2-S6510 series switches, it can support the construction of lossless networks and can be applied to service scenarios that require lossless transmission, such as AI training or HPC.


Non-blocking Hyperscale Data Center Networks

Provides 128 x 100GbE ports

Data Center Overlay Networking

Supports VXLAN to meet the data center overlay networking requirements and enables the establishment of a logically layer-2 network on the layer-3 network.

RDMA-based Lossless Ethernet

Supports the RDMA feature and enables the establishment of lossless, low-latency data center Ethernet.

Cloud Networking Ready

  • Shared 32MB Buffer with burst absorption
  • Up to 288K MAC and 168K Host entries

Automated O&M/Monitoring Network

  • Supports In-band Network Telemetry to enable active pushing of switch status based on gRPC.
  • Supports the ZTP protocol to meet automatic deployment requirements.

Note: Available in standard* airflow.


Ports 128 × QSFP28
Switching Capacity 25.6 Tbps
System Memory 8GB (Up to 32GB)
Packet Buffer 64MB
Fans 6 (5+1 redundant, hot-swappable)
Airflow Standard* airflow
CPUIntel Xeon D-1527
8 Bpps
System Storage64GB
Power Supplies4 (2+2 redundant, hot-swappable)
Power Consumption
* Standard: Front to rear

Network Operating System

This product leverages HulkOS, a robust and secure operating system developed by Micas Networks for data center environments. With multiple versions and unique features tailored to each Micas Enterprise switch product, HulkOS ensures comprehensive functionality. Explore more about our offerings on the dedicated page at Micas Networks.

Learn more about the offers at the Micas Networks dedicated page.

Software Features

Layer 2 Protocols
  • 802.1D Spanning Tree Protocol (STP)
  • 802.1w Rapid Spanning Tree Protocol (RSTP)
  • 802.1s Multiple Spanning Tree Protocol (MSTP)
  • 802.3ad Link Aggregation Control Protocol (LACP)
  • 802.1Q VLAN Tagging
  • IGMP Snooping
  • MLD Snooping
  • Jumbo Frames (9216 bytes)
  • 802.1ad Flexible QinQ
  • VLAN Registration Protocol (GVRP)
  • MLAG
  • Routing protocols: OSPFv3, BGP4+, IS-ISv6, and RIPng
  • Neighbor Discovery (ND)
  • MLDv1/v2
  • PIM-SMv6
  • Path MTU Discovery (PMTUD)
  • IPv6 tunnel: IPv4 over IPv6, IPv6 over IPv6
  • GRE tunnel
  • ICMPv6, DHCPv6, DNSv6, SNMP v6, TCP/UDP for IPv6
  • ACLv6, IPv6 QoS
  • Telnet/SSH v6
  • FTP/TFTP v6
  • NTP v6
  • Ping/Traceroute v6
  • VRRP for IPv6
  • IPv6 MIB support for SNMP
  • Up to 8 unicast queues and 4 multicast queues for each port
  • ACL-based traffic classification
  • Priority marking/remarking
  • Multiple queue scheduling mechanisms: SP/WRR/DRR/SP + WRR/SP + DRR
  • Congestion avoidance mechanisms, such as WRED and tail discarding
HA Design
  • BFD
  • DLDP
  • Dual-link fast switching (REUP)
  • Unidirectional link detection (RLDP)

Layer 3 Protocols

  • Routing protocols: OSPF, BGP, MBGP, IS-IS, and RIPv1/v2
  • 64 equal-cost multi-path (ECMP) routes
  • Weighted cost multi-path (WCMP) routes
  • VRF
  • IGMP v1/v2/v3
  • Multicast Source Discovery Protocol (MSDP)
  • VRRP
  • Policy-based routing (PBR)
  • Route map
Data Center Features
  • RDMA feature: PFC/ECN
  • OpenFlow 1.3


  • gRPC
  • sFlow
  • INT

Security Features

  • Network Foundation Protection Policy (NFPP)
  • DDoS attack defense
  • CPU Protection Policy
  • Plaintext-based and MD5 ciphertext-based authentication for OSPF, RIPv2, and BGPv4 packets
  • DHCP Snooping
  • IPv4/v6 packet filtering by standard ACL, extended ACL and VLAN-based ACL

Management Mode

  • SNMP v1/v2/v3
  • Telnet, SSHv1/v2
  • Console
  • MGMT
  • RMON
  • NTP clock
  • Syslog
  • ZTP
  • Configuration Rollback

Quality Certifications

Order Information


M2-S6920-4S-FA M2-S6920-4S switch, 4 slots, 4*AC power modules, 6*fan modules, front-to-rear airflow
SM6900-32C 32-port 100GbE line card

Fan and Power

M2EFAN I-F Power module, supporting 2+2 redundancy, hot swapping, and front-to-rear airflow
PA1300 I-F Fan module, supporting 5+1 redundancy, hot swap, and front-to-rear airflow