1 Product Overview
1
Live-GSH5T Gigabit Ethernet Switch
1Product Overview
Introduction
5× 10/100/1000Base-T port Gigabit Ethernet Switch with
Live-GSH5T Gigabit Ethernet Switch is an auto-sensing and auto-negotiating Gigabit Ethernet
Switch with Broadcast Storm Control capability. Its five 10/100/1000Mbps Gigabit ports provide
10/100/1000Mbps connections to PC with gigabit cards or gigabit switches
Live-GSH5T’s unique switching fabric provides non-blocking full wire speed for all ports. Auto
MDI/MDIX function is provided for conventional uplinking to another switch/hub using ordinary
straight-through cable. Each port provides up to 2000Mbps in full duplex mode. With its
auto-sensing, Live-GSH5T automatically detects the speed of the devices you plug into, and routes
the incoming data to its destination. Its auto-negotiating function allows existing devices running at
different speeds to communicate easily within the same network.
Store-and-Forward Architecture against Packet Loss
When network is under heavy traffic, the shared memory buffer in the switching devices might yield
incorrect detections due to overfed memory buffer. This setback can happen either when data is
transmitted in IEEE802.3x Full Duplex or Back Pressure Flow Control mode. To solve this problem,
Live-GSH5T utilizes a fixed memory buffer allocation with Store-and-forward transmission to
ensure an effective buffer allocation for each port.
Store-and-forward transmission controls data flow from transmitting to receiving nodes with the
receiving buffer threshold adjusted to an optimal value, thus guaranteeing against all possible packet
losses.
Active Flow Control
Live-GSH5T Gigabit Ethernet Switch implements in full duplex mode a flow control that is
compliant to IEEE 802.3x standard. While in half duplex mode, it employs an optional Back
Pressure Flow Control to stall the incoming data when port buffers are saturated. With this flow
control mechanism, it can be ensured that frames dropped during transmission are reduced to a
minimum.
Non-blocking Wire Speed
Live-GSH5T’s non-blocking cross-bar matrix architecture provides high-end performance for
departmental and workgroup environments at a fraction of the cost of similar devices. Typically,
this type of architecture was found only in high-end switches designed to handle huge corporate
