Changeover without Slot Loss of the Erasure Nodes on DQDB
Tetsuya Yokotani, Toshihiro Shikama · 1995
This paper concerns the erasure nodes to release slots in DQDB. If the erasure nodes are introduced in the DQDB network, the capability to transfer slots is improved. However, the transit delay from the source node to the destination node is increased by the storage delay in the erasure nodes. We proposed that the number and the location of the erasure nodes are changed according to traffic condition in our pervious work. However, these changes should not disturb the valid slot streams. This paper proposes the scheme to provide this function. This paper also shows the configuration of the erasure nodes having this function. Moreover, it describes the operation algorithm to provide the changeover of a node state, where activation as well as inactivation of slot erasing function in a node is performed without loss of slots. Finally, it estimates the time of this algorithm execution.