3Com 3C17400 User Manual - Page 14

14 CHAPTER 1: INTRODUCING THE SWITCH 3812 AND SWITCH 3824 About the Switch The Switch is a 10/100/1000 Mbps Ethernet Switch, which consists of 4 SFP ports and either: ■ 24 10BASE-T/100BASE-TX/1000BASE-T ports or ■ 12 10BASE-T/100BASE-TX/1000BASE-T ports The last four 10/100/1000 ports are combination ports. When an SFP port is active it has priority over the 10/100/1000 port of the same number (9 -12 on the 12-port Switch, 21-24 on the 24-port Switch). The corresponding 10/100/1000 port is disabled when an SFP port is active. Summary of Hardware Features Table 3 summarizes the hardware features that are supported by the Switch. Table 3 Hardware features Feature Addresses Auto-negotiation Forwarding Modes Duplex Modes Traffic Prioritization Ethernet/Fast Ethernet/ Gigabit Ethernet Ports SFP Ports Mounting Switch ■ Up to 16000 supported ■ Up to 1000 permanent entries ■ Supported on all ports ■ Auto MDI/MDI-X on 10/100/1000 ports Store and Forward Half and full duplex on all front panel ports Supported (using the IEEE Std 802.ID, 1998 Edition): 8 queues per port Auto-negotiating 10BASE-T/100BASE-TX/1000BASE-T ports 4 auto-negotiating SFP ports 19-inch rack or stand-alone mounting