Summary Of Hardware Features - 3Com 4900 (3C17700) Getting Started Manual

Summary of
Hardware Features
Table 3 summarizes the hardware features that are supported by the
Switches.
Table 3 Hardware features
Feature Switch 4900 Series
Fast Ethernet Switch 4900: 12 Auto-negotiating 100BASE-TX/1000BASE-T
and Gigabit ports
Ethernet Ports
Switch 4900 SX: 12 Auto-negotiating 1000BASE-SX ports
Switch 4924: 24 Auto-negotiating
10BASE-T/100BASE-TX/1000BASE-T ports
Switch 4950: 12 Auto-negotiating
10BASE-T/100BASE-TX/1000BASE-T, 6 1000BASE-SX and
6 GBIC ports
Addresses
Forwarding Store and Forward
Modes
Duplex Modes
Flow Control Supported on all ports
Smart
auto-sensing
Traffic Supported (IEEE Std 802.1D, 1998 Edition)
Prioritization
Four traffic queues per port
Layer 3 Support for wire-speed IP routing
Switching
RPS Support Connects to SuperStack 3 Advanced Redundant Power System
(ARPS) (3C16071B)
XRN Support eXpandable Resilient Networking (XRN) support. Allows
interconnection of two units to create a Distributed Fabric.
Mounting 19-inch rack or stand-alone mounting
Up to 12,000 supported
Up to 64 permanent entries
Half duplex only supported on
10BASE-T/100BASE-TX/1000BASE-T ports in 10/100 Mbps
mode
All 1000 Mbps ports are full duplex only
Supported on all 10BASE-T/100BASE-TX/1000BASE-T ports
Not supported on 1000BASE-SX and GBIC ports
About the Switches 13