User’s Manual of NS2503-24P/2C
12
1.4 Product Features
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Physical Port
24-Port 10/100Base-TX
Fast Ethernet ports with
IEEE 802.3af / IEEE 802.3at PoE
injector
2 10/100/1000Base-T
TP combo interfaces
2 1000Base-X mini-GBIC/SFP
slots, shared with Port-25 and Port-26
Reset button for system management
1 RS-232 male DB9 console interface for Switch basic management and setup
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Power over Ethernet
Complies with IEEE 802.3af / IEEE 802.3at Power over Ethernet End-Span PSE
Up to 24 IEEE 802.3af devices powered
Up to 11 IEEE 802.3at devices powered
Support PoE Power up to 15.4 Watts / 30 Watts for each PoE port
Auto detect powered device (PD)
Circuit protection to prevent power interference between ports
Remote power feeding up to 100m
PoE
Management
•
IEEE 802.3af and IEEE 802.3at mode switch control
•
Total PoE power budget control
•
Per port PoE function enable/disable
•
PoE Admin-mode control
•
PoE Port Power feeding priority
•
PD classification detection
•
Over Temperature Protection function
•
Temperature Threshold Control
•
PoE Usage Threshold Control
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Layer 2 Features
Prevents packet loss Flow Control:
-
IEEE 802.3x PAUSE Frame flow control for Full-Duplex mode
-
Back-Pressure Flow Control in Half-Duplex mode
High performance of Store-and-Forward architecture, runt/CRC filtering eliminate erroneous packets to optimize the
network bandwidth
Broadcast / Multicast / Unicast storm control
8K MAC address table, automatic source address learning and ageing
Supports
VLAN
-
IEEE 802.1Q Tag-based VLAN
- Port-Based
VLAN
- Q-in-Q
tunneling
-
GVRP for dynamic VLAN Management
-
Private VLAN Edge (PVE / Protect Port )
Supports
Link Aggregation
−
up to 13 trunk groups
−
up to 8 ports per trunk group with 1.6Gbps bandwidth (Full Duplex Mode)
−
IEEE 802.3ad LACP (Link Aggregation Control Protocol)