20
Introduction
Features
The Dell™ PowerConnect™ 3048 Fast Ethernet Managed Switch offers the
following features:
•
IP Assignment Mode
•
SNMP Host Authorization Table
•
User Authentication Mode — RADIUS Server IP Address, RADIUS
Shared Secret, IP Filtering, and Allowed IP Addresses
•
Layer 3 Priority — DiffServ
•
Configuration File Management
•
Enhanced Security Administration
•
More Statistics/Utilization Summary
•
48 10/100BASE-TX auto-sensing Fast Ethernet switching ports
•
2 10/100/1000BASE-T auto-sensing Gigabit Ethernet switching ports
•
2 small form-factor pluggable (SFP) gigabit interface converter
(GBIC) slots
•
2 gigabit stacking ports for daisy-chain configuration for up to 144 Fast
Ethernet ports
•
IEEE 802.3u, IEEE 802.3z, and IEEE 802.3ab compliant
•
Up to 8K-entry, media access control (MAC) address cache with
hardware-assisted aging
•
MAC addresses lookup based on port, virtual local area network
(VLAN) ID, and MAC addresses
•
Backpressure flow control for half-duplex operation
•
IEEE 802.3x flow control for full-duplex operation
•
Auto MDI/MDIX support for 10/100BASE-TX and 10/100/1000BASE-
T ports
•
IEEE 802.1Q-based tagged VLAN
•
Support for up to 256 VLANs
•
IEEE 802.1p class of service (CoS) through dual priority for each port
•
Internet group management protocol (IGMP) snooping support