3Com 4500 52-port switch — bu korxona yoki ofis tarmoqlari uchun mo‘ljallangan Layer-3 managed switch hisoblanadi. U ko‘p kompyuter yoki qurilmalarni bitta LAN tarmoqqa ulash va routing bilan boshqarish uchun ishlatiladi.

48 ta 10/100/1000 Mbps Ethernet port
4 ta SFP Gigabit uplink port
Jami: 52 port

Layer-2 / Layer-3 funksiyalari:
VLAN (IEEE 802.1Q) – virtual segmentlarga bo‘lish
Inter-VLAN routing – VLANlar o‘rtasida trafik yo‘naltirish
Link Aggregation (802.3ad) – bir nechta portni bitta tez kanal qilish
Spanning Tree (STP/RSTP/MSTP) – tarmoqda loop bo‘lmasligi uchun
IGMP Snooping – multicast trafikni boshqarish
MAC filtering

Boshqarish:
Web interface
CLI
SNMP monitoring
RADIUS auten

Xavfsizlik:
802.1X auten
MAC-based access control
RADIUS authentication
begonani bloklash yoki VLAN ga o‘tkazish

Switching capacity: ~104 Gbps
Forwarding rate: ~77 million paket/sek
MAC address: ~16000 qurilma

Qo‘shimcha:
Stacking – bir nechta switchni bitta tizim sifatida boshqarish
QoS (802.1p) – trafik ustuvorligi (masalan VoIP)
Broadcast storm control
Full/Half duplex auto-negotiation