User's Manual Part 1
Release8OverviewofCycloneNetworks
Issue2,November2007 Draft5forRegulatoryReview 101
8.2 BH‐BHLINKS
Cyclone BHs communicate with each other using a point-to-point protocol. This point-to-
point protocol uses a 2.5-msec frame. A BH link has higher throughput and lower latency
(typically 5 msec, 2.5 msec in each direction) for two reasons:
• Only two endpoints are involved.
• No bandwidth request and reservation process is involved.
For 10-Mbps BHs, the aggregate throughput on the channel is 7.5 Mbps. For 20-Mbps
BHs, the aggregate throughput on the channel is 14 Mbps. If a BH is set to a downlink
ratio of 50%, then the bandwidth in each direction is half of the total BH link bandwidth.