Auto-negotiation
Auto-negotiation is a process that permits the switch to automatically select the operational modes of its 10/100 RJ-45 ports. Upon first being connected, the switch detects the speed of the network the port is connected to, either 10Mbps or 100Mbps, and the type of communication setting, half or full duplex. The port is then automatically set by the switch to operate in the proper mode, without user intervention. It is not required that the network device being connected to the switch supports auto- negotiation as the VH-4802 switch automatically adjusts to the network device’s communication settings. Auto-negotiation is configurable using the console interface menus, the on-board Web agent, or via SNMP.
BootP
The Bootstrap Protocol (BootP) provides for the capability of passing configuration information to hosts on a TCP/IP network. Using this process, network devices do not need to be configured before they can communicate using the TCP/IP protocol suite. The VH-4802 switch uses BootP to automatically configure IP address information without requiring access to the console menus. BootP operation is configurable using the console interface menus, the on-board Web agent, or via SNMP.
LEDs
The switch port LEDs provide a quick and accurate display of the integrity of switch connections and port mode. Each RJ-45 port has a Link and Mode LED. The color of the Link LED indicates a 10 Mbps or 100 Mbps connection. The operation of the Mode LEDs can be changed by use of the LED Mode button on the switch front panel. When the LED Mode button is pressed, the operation of the RJ-45 Mode LEDs changes to indicate Activity (Act) and full/half duplex operation (FDX), and flow control (Flow Ctrl) respectively. The module LEDs indicate Status and Activity for each of the modules. The module LEDs are not affected by the LED Mode button.
Full Duplex Mode
The full-duplex mode of operation on a port can double the throughput of switch connections. This mode disables the collision detection portion of the Ethernet Carrier Sense Multiple Access with Collision Detection (CSMA/CD) protocol, allowing for two-way traffic. Full duplex is configurable using the console interface menus, the on-board Web agent, or via SNMP.
10 Product Overview | VH-4802 |