新职员培训资料——交换机(殷光磊 )华为.ppt

* * * * * * * * * * The SuperStack? 3 Switch 4950 provides 24 wire speed fixed Gigabit ports in a combination of 10/100/1000, 1000BASE-SX and GBIC providing high performance and flexibility for the backbone of enterprise networks, in a compact and affordable form factor. * The 1st module available is the 4 port 1000BASE-SX module. This will be shortly followed by 4 port 1000BASE-T and 1000BASE-LX modules The 4 port 1000Base-SX Module can be fitted in any SS3 Switch 4900, to provide an additional 4 gigabit fibre switch ports There is a choice of LX or SX modules The 3C17710 adds 4 1000Base SX Ports The 3C17712 adds 4 1000Base-LX Ports Both use the MT-RJ connector style are Full Duplex Only and use Auto-negotiation to negotiated flow control only Module ports can be trunked to form a high speed uplink The 4 port 1000Base-T Module can be fitted in any SS3 Switch 4900, to provide an additional 4 1000Base-T switch ports. Note that unlike the front panel ports these are Gigabit and hence full duplex only The module is Full Duplex Only and uses Auto-negotiation to negotiate flow control Module ports can be trunked to form a high speed uplink * The 3Com SuperStack 3 Switch 4200 family is a new range of fixed configuration 10/100 LAN switches for networks requiring the latest technology at a reasonable price. The Switch 4200 family combines premium performance with comprehensive functionality and plug-and-play installation. ? The SuperStack 3 Switch 4200 family offers the standard features expected of a new generation 10/100 switch, including wirespeed performance, stacking*, and resilient features, all in an affordable Layer 2- only package. ? The Switch 4200 family has models for a variety of business sizes and networking applications, offering a choice of 24- and 48-port versions. In addition to 10/100 ports, each comes with two built-in 10/100/1000 downlink ports for added versatility. ? The switches offer the ability to create robust, fault-tolerant networks throu