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

Customer

A manufacturer of network equipment.
 

Task 

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.
 

Solution

Promwad engineering team designed a custom managed L2 switches based on Realtek 83xx chipset (CPU MIPS-4KEc 32bit@500MHz). 
 
L2 switch features:
 

General

  • Type: L2, managed
  • Form factor: 1U
  • MAC address table: 8K entries
  • RAM: 256 MB
  • Energy Efficient Ethernet: IEEE 802.3az
     

Interfaces

  • 24 x 10/100М Ethernet ports
  • 4 x Gigabit Ethernet ports
  • Power-over-Ethernet (PoE)
     

Features of level 2

  • 802.3x flow control
  • Loop detection
  • Port mirroring
  • IGMP snooping
  • QoS: 802.1p, DSCP
  • VLAN
  • 802.1q VLAN
     

Security

  • Port-based authentication: 802.1x
     

Control & monitoring

  • OAM 802.3ah
  • Web-interface
  • Command Line Interface (CLI)
  • Telnet server
  • SNMP
  • Syslog & RMON

 

Project results

Our customer received a series of new products for simple network management.

Our scope of work included the following services:

— PCB design
— Mechanical design
— Embedded software development
— Web-interface for management and control