Accton Technology VM2524 Installation Manual

Contents

Accton Technology VM2524 Installation Manual Manual pdf 15 page image

Overview1-3Switch ArchitectureThe VDSL Switch-VS2512A employs a wire-speed, non-blocking switching fabric.This permits simultaneous wire-speed transport of multiple packets at low latency onall ports. This switch also features full-duplex capability on all ports, which effectivelydoubles the bandwidth of each connection.Management OptionsThis switch contains a comprehensive array of LEDs for “at-a-glance” monitoring ofnetwork and port status. It also includes a built-in network management agent thatallows the switch to be managed in-band using SNMP or RMON (Groups 1, 2, 3 and9) protocols, with a Web browser, or remotely via Telnet. The switch also provides anRS-232 serial port (DB-9 connector) on the front panel for out-of-band management.A PC may be connected to this port for configuration and monitoring out-of-band via anull-modem cable. (See Appendix B for wiring options.)This switch provides a wide range of advanced performance-enhancing features.Port-based and tagged VLANs, plus support for automatic GVRP VLAN registrationprovides traffic security and efficient use of network bandwidth. QoS priorityqueueing ensures the minimum delay for moving real-time multimedia data acrossthe network. Flow control eliminates the loss of packets due to bottlenecks causedby port saturation. Broadcast storm control prevents broadcast traffic storms fromengulfing the network. Some of this switch’s advanced features are described below.For a detailed description, refer to the Management Guide.VLANsThe VDSL Switch-VS2512A supports up to 255 VLANs. A Virtual LAN is a collectionof network nodes that share the same collision domain regardless of their physicallocation or connection point in the network. By segmenting your network intoVLANs, you can:• Eliminate broadcast storms which severely degrade performance in a flat network.• Simplify network management for node changes/moves by remotely configuringVLAN membership for any port, rather than having to manually change the node’sIP address.Multicast SwitchingSpecific multicast traffic can be assigned to its own VLAN to ensure that it does notinterfere with normal network traffic and to guarantee real-time delivery by settingthe required priority level for the designated VLAN. The switch uses IGMP Snoopingto manage multicast group registration.