InfoCentre Application Notes | ||
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High Speed Access over Low Speed Lines
Shortage of high speed physical linesAs bandwidth requirements increase due to the proliferation of high speed applications such as Internet access, carriers are often hard-pressed to meet customer demand. Carriers can easily supply low speed lines, but high speed lines are not readily available. Split transmissions over several linksMLPPP (Multi-Link Point-to-Point Protocol) can combine multiple links from different services onto one physical pipe. It enables adding or removing links as needed (bandwidth-on-demand). RAD's packet switching products support MLPPP, offering a solution for high speed access over low speed lines. They can split high speed IP, X.25 and Frame Relay transmissions over up to 11 low speed PPP links, according to traffic demand. Different data types (IP, X.25 and Frame Relay) are divided over all the PPP links simultaneously, speeding up delivery. MLPPP support in RAD's packet switchesIn the drawing below, RAD's SPS-12 12-port multiprotocol packet switch simultaneously sends IP, X.25 and Frame Relay transmissions over low speed PPP links to an FPS-8 8-port multiprotocol fast packet switch on the receiving end. The application supports any combination of SPS-12, SPS-6 and FPS-8 devices. For the SPS products, the aggregate data rate on three links can be up to 2 Mbps. Each link can operate at data rates of up to 2 Mbps on the FPS-8. This application is also suitable for transferring large amounts of single protocol traffic, for example, IP or Frame Relay. |
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Advantages of the RAD solution
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