3Com 3C17700 Getting Started Guide - Page 13

Summary of Hardware Features, summarizes the hardware features that are supported by the, Switches. - switch 12 port

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Page 13 highlights

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

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About the Switches
13
Summary of
Hardware Features
Table 3
summarizes the hardware features that are supported by the
Switches.
Table 3
Hardware features
Feature
Switch 4900 Family
Fast Ethernet
and Gigabit
Ethernet Ports
Switch 4900:
12 Auto-negotiating 100BASE-TX/1000BASE-T
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
■
Up to 12,000 supported
■
Up to 64 permanent entries
Forwarding
Modes
Store and Forward
Duplex Modes
■
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
Flow Control
Supported on all ports
Smart
auto-sensing
■
Supported on all 10BASE-T/100BASE-TX/1000BASE-T ports
■
Not supported on 1000BASE-SX and GBIC ports
Traffic
Prioritization
Supported (IEEE Std 802.1D, 1998 Edition)
Four traffic queues per port
Layer 3
Switching
Support for wire-speed IP routing
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