Design of L2 Gigabit managed switches, 16 and 24 ports models


A manufacturer of network equipment.


To design a series of Gigabit network switches with Power-over-Ethernet (PoE) support. 16 and 26 port models in metal enclosures in the compact 1U form factor.


Promwad's engineering team designed a custom managed L2 switches based on Realtek 83xx chipset (CPU MIPS-4KEc 32bit@500MHz). 
L2 switch features:
  • 24 x 10/100М Ethernet ports
  • 4 x Gigabit Ethernet ports
  • Support of Energy Efficient Ethernet (IEEE 802.3az)
  • 256MB RAM
  • 8K Entries in MAC Address Table
  • Loop Detection
  • Port Mirroring
  • 802.3x Flow Control
  • IGMP Snooping
  • Support of VLAN 802.1Q
  • QoS (802.1p, DSCP)
  • Port-Based Authentication (802.1X)
  • OAM 802.3ah
  • Web-interface
  • Command Line Interface (CLI)
  • Telnet Server
  • SNMP
  • Syslog & RMON


Our scope of works included PCB design, mechanical design, embedded software development and web-interface for management and control. As a result, our customer received a series of new products for simple network management.