Network enumeration method of Rapid IO bus interconnection system

Abstract

The invention brings forward a network enumeration method of a Rapid IO bus interconnection system and aims at provides an enumeration method that is only connected with a host node and is capable of adapting to a network size change and fixed mapping between a physical address and a network address. The method is realized by using the following technical scheme: a connected graph G0 (V,E) is constructed in a system using a Rapid IO bus as an interconnection architecture and is used as a network template stored in a host node, wherein V is a peak set describing network nodes and each peak v in the peak set V contains a network address and a physical address that are distributed in advance by each node; and a distribution strategy of predefined addresses of the network template is added in a network enumeration algorithm containing a network enumeration main function and a node setting subfunction; and for each network node that is newly discovered, a network address and a port number of an enumerated port are used as key words to search a matched node in the G0, wherein the matched node serves as a new node distribution address. And in the network enumeration method, the node setting function serves as a subfunction that is invoked by enumerated function.

Description

technical field [0001] The invention relates to a network enumeration method for network topology changes caused by network initialization and hot insertion events for systems interconnected through RapidIO buses. Background technique [0002] RapidIO bus technology is a high-speed serial bus technology based on packet switching. Compared with 10 Gigabit Ethernet and PCIe, it has higher transmission efficiency. Its high performance, low delay and high reliability can meet the requirements of future strong real-time embedded systems. Application requirements. In the high-speed signal information processing system interconnected by RapidIO bus, the nodes in the network have two types of addresses, physical address and network address. The physical address identifies the physical location of the network node in the system, and usually includes several levels of chassis number, board number, and node serial number, such as error! Reference source not found. shown. The networ...

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Problems solved by technology

[0004] Although the self-location strategy of network nodes can solve the problem of dynamic changes in address mapping, there are two defects: one is that network nodes need hardware support to obtain local physical addresses, and the implementation is complex and not universal; the other is the allocation of network addresses It is associated with all nodes in the network, and the failure of a single node may affect the entire system, reducing the reliability of the system

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