Cabletron Systems SmartSTACK ELS100-S24TX2M User Manual

Also see for SmartSTACK ELS100-S24TX2M: Quick installation guide Quick installation guide Management guide

Contents

10 Product Overview ELS100-S24TX2MAuto-negotiationAuto-negotiation is a process that permits the switch to automaticallyselect the operational modes of its 10/100 RJ-45 ports. Upon first beingconnected, the switch detects the speed of the network the port isconnected to, either 10Mbps or 100Mbps, and the type of communicationsetting, half or full duplex. The port is then automatically set by the switchto operate in the proper mode, without user intervention. It is not requiredthat the network device being connected to the switch supports auto-negotiation as the ELS100-S24TX2M switch automatically adjusts to thenetwork device’s communication settings. Auto-negotiation isconfigurable using the console interface menus, the on-board Web agent,or via SNMP.BootPThe Bootstrap Protocol (BootP) provides for the capability of passingconfiguration information to hosts on a TCP/IP network. Using thisprocess, network devices do not need to be configured before they cancommunicate using the TCP/IP protocol suite. The ELS100-S24TX2Mswitch uses BootP to automatically configure IP address informationwithout requiring access to the console menus. BootP operation isconfigurable using the console interface menus, the on-board Web agent,or via SNMP.LEDsThe switch port LEDs provide a quick and accurate display of the integrityof switch connections and port mode. Each RJ-45 port has a Link andMode LED. The color of the Link LED indicates a 10 Mbps or 100 Mbpsconnection. The operation of the Mode LEDs can be changed by use ofthe LED Mode button on the switch front panel. When the LED Modebutton is pressed, the operation of the RJ-45 Mode LEDs changes toindicate Activity (Act) and full/half duplex operation (FDX), and flowcontrol (Flow Ctrl) respectively. The module LEDs indicate Status andActivity for each of the modules. The module LEDs are not affected by theLED Mode button.Full Duplex ModeThe full-duplex mode of operation on a port can double the throughput ofswitch connections. This mode disables the collision detection portion ofthe Ethernet Carrier Sense Multiple Access with Collision Detection(CSMA/CD) protocol, allowing for two-way traffic. Full duplex isconfigurable using the console interface menus, the on-board Web agent,or via SNMP.