CN112737867A - Cluster RIO network management method - Google Patents
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- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
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- H04L41/042—Network management architectures or arrangements comprising distributed management centres cooperatively managing the network
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- H—ELECTRICITY
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Abstract
The invention discloses a method for managing a plurality of RIO networks, and aims to provide a method for performing distributed management on a plurality of RIO networks under the condition of continuously increasing scale of the RIO networks. The invention is realized by the following technical scheme: in the RIO network, network management nodes in each RIO sub-network are connected with a switching network, cluster network management software issues configuration routes, network management nodes in the cluster network management are managed in a distributed mode, unique RIO node numbers of the universe are distributed to all RIO sub-nodes and edge nodes in the sub-networks according to the star network physical topological relation of the RIO sub-networks, RIO communication is conducted among the edge nodes through the routes, the topological relation among the network nodes of the sub-networks where the RIO sub-networks are located and a management maintenance table of node communication resources are established and maintained, information interaction with the edge communication nodes in all the RIO networks is achieved, and the network communication states of the network nodes in the RIO sub-networks are monitored.
Description
Technical Field
The invention relates to a cluster RIO network distributed management method.
Background
The Ethernet transmission is based on a TCP/IP protocol and is generally applied in many fields, the Ethernet has the advantages of full opening, low cost, high bandwidth, high stability and reliability, wide application, rich shared resources and the like, and along with the development of IT technology, the network transmission speed is improved from 10Mbit/s to 1Gbit/s, and the speed is suitable for embedded development. In embedded system application, all hardware elements are connected based on bus mode, and the traditional interconnection bus can not meet the increasing needs of main frequency and performance of a processor due to the limitations of transmission rate and system topology. Therefore, in an embedded environment, a RapidIO interconnection bus protocol is basically adopted to meet interconnection transmission among chips and among boards, and the communication speed of 1Gbps to 60Gbps can be realized. IP packets may be lost, duplicated, or delivered out of order due to unreliable packet transmission for many networks, network congestion, traffic load balancing, or unpredictable network behavior. RapidIO adopts a three-layer hierarchical system structure, and the logical layer specification is respectively a logical layer specification transmission layer specification and a physical layer specification logical layer specification positioned at the highest layer, all protocols and packet formats are defined, and necessary information is provided for initiating and completing transactions of an end point device; the transmission layer is normalized in the middle layer, and routing information required by packet transmission between a RapidIO address space and an end point device is defined; the bottom physical layer specification describes device level interface information, and hierarchical division such as packet transmission mechanism flow control electrical characteristics, low-level error management and the like ensures that new transaction types are added to any layer without changing other layer specifications, thereby providing design flexibility and supporting better front-back compatibility. The commonly used RapidIO network is based on switching interconnection, and according to the traditional RIO network management method:
(1) RIO network management in a point-to-point interconnection relation, and no designated network management node manages the whole RIO network. The advantages are that: the scale is small, and the communication is simple and convenient; the disadvantages are as follows: only the communication requirements of two nodes are adapted.
(2) And exchanging network management in the interconnection relationship, and finishing initialization, monitoring and management work of the whole system by any Host computer of the access system through RapidIO maintenance operation. The method has the advantages that: accommodating communication for multiple nodes compared to method (1); the disadvantages are as follows: large-scale RIO network management is complex and high in management cost.
Disclosure of Invention
The invention aims to provide a cluster RIO network management method which can effectively improve the efficiency and reliability of a system under the condition of increasing the scale of an RIO network, realizes communication of RIO edge nodes in different RIO networks and manages a plurality of sub RIO networks in a distributed mode.
The above object of the present invention can be achieved by the following measures, a method for managing a cluster RIO network, comprising the steps of:
(1) in a RapidIO interconnection system which is constructed by taking a switching chip as a core, a network management node in each RIO sub-network is connected with a switching network, cluster network management software communicates with the network management nodes in the sub-RIO networks through Ethernet, issues configuration routes, inquires the routes and the node states in each RIO network, manages the network management nodes in the cluster network in a distributed mode, the cluster network management software communicates with the network management nodes in the sub-RIO networks through Ethernet according to the star network physical topological relation of the RIO sub-networks, the network management nodes in each RIO sub-network are connected with the switching network, the network management nodes in the cluster network management distribute domain unique RIO node numbers for all the RIO sub-nodes and edge nodes in the sub-networks according to the star network physical topological relation of the RIO sub-networks, and RIO communication is carried out among the edge nodes through the routing, establishing and maintaining a topological relation between network nodes of a sub-network in which the network node is positioned and a management maintenance table of node communication resources, realizing information interaction with edge communication nodes in all RIO networks, and monitoring the network communication state of the network nodes in the RIO sub-network; (2) the cluster network configures routes between edge nodes in different sub-networks: the cluster network judges whether the sub-network is accessed into the RIO cluster network or not through a transmission control protocol/internet protocol (TCP/IP), and the connection is successfully established; the cluster network management node acquires a subnet where an edge node needing to configure the route is located, issues bridging information and route configuration information to the network management node of the corresponding RIO subnet, and configures the RIO route through the bridging information and the route configuration information;
(3) the cluster network acquires the state change information of the RIO sub-network, the network management node of the RIO sub-network writes a port-write packet through a port of a mode of reporting a hardware event by a switching chip in the RIO network, reports the dynamic network access and network quit information of the network node of the network in real time, reports the state information and the execution result to the cluster network management software through a TCP/IP protocol, and performs distributed management on a plurality of RIO networks.
Compared with the prior art, the invention has the following beneficial effects:
in the RIO network, in a RapidIO interconnection system constructed by taking a switching chip as a core, cluster network management software communicates with network management nodes in a sub-RIO network through an Ethernet, the network management nodes in each RIO sub-network are connected with a switching network, the network management nodes in the cluster network management distribute unique RIO node numbers for all RIO sub-nodes and edge nodes in the sub-networks according to the star network physical topological relation of the RIO sub-networks, RIO communication is carried out among the edge nodes through a route, a management maintenance table of the topological relation among the network nodes of the sub-networks where the network management nodes are located and node communication resources is established and maintained, information interaction with the edge communication nodes in all RIO networks is realized, and the network communication states of the network nodes in the RIO sub-networks are monitored; the correct transmission of the route is ensured, so that a plurality of devices in the system can communicate in parallel, and the efficiency and the reliability of the system are effectively improved.
The cluster network of the invention configures routes among edge nodes in different sub-networks: edge nodes in the sub-RIO networks may communicate with each other, and globally unique RIO nodes in the clustered RIO networks may communicate across the RIO networks. The cluster network judges whether the sub-network is accessed into the RIO cluster network or not through a transmission control protocol/internet protocol (TCP/IP), and the connection is successfully established; the cluster network management node acquires a subnet where an edge node needing to configure the route is located, issues bridging information and route configuration information to the network management node of the corresponding RIO subnet, and configures the RIO route through the bridging information and the route configuration information; dynamic network access and network exit information of the network node of the network where the network node is located is reported in real time through a message transmission layer, state information and an execution result are reported to cluster network management software through a TCP/IP protocol, the cluster network management software communicates with network management nodes in the sub RIO networks through the Ethernet, for example, commands of issuing configuration routes, inquiring node states in each RIO network and the like are issued, and distributed management is carried out on a plurality of RIO networks, so that the distributed management effect is achieved. The RIO cluster network management method is adopted, under the condition of coping with the continuously increased scale of the RIO network, the distributed management and development of the RIO network are realized, the complexity is reduced, the design flexibility is increased, and better front-back compatibility is supported.
Drawings
The technical solution of the present invention is further described below with reference to the accompanying drawings, but the present invention is not limited to the following.
FIG. 1 is a schematic diagram of RIO subnetworks in the management of a cluster network of the present invention;
FIG. 2 is a schematic diagram of a cluster network of the present invention;
fig. 3 is a flow diagram of a cluster network configuration of the present invention for routing across RIO network edge nodes.
Detailed Description
See fig. 1. According to the invention, the following steps are adopted:
(1) in the RIO network, in a RapidIO interconnection system constructed by taking a switching chip as a core, a network management node in each RIO sub-network is connected with a switching network, cluster network management software communicates with the network management nodes in the sub-RIO networks through Ethernet, distributes configuration routes, queries the routes, inquiring the node state in each RIO network, managing network management nodes in the cluster network in a distributed mode, distributing RIO node numbers with unique universe for all RIO sub-nodes and edge nodes in a sub-network according to the star network physical topological relation of RIO sub-networks, carrying out RIO communication among the edge nodes through routing, establishing and maintaining the topological relation among the network nodes of the sub-network where the RIO sub-nodes are located and a management maintenance table of node communication resources, realizing information interaction with the edge communication nodes in all RIO networks, and monitoring the network communication state of the network nodes in the RIO sub-networks;
(2) the cluster network configures routes between edge nodes in different sub-networks: the cluster network judges whether the sub-network is accessed into the RIO cluster network or not through a transmission control protocol/internet protocol (TCP/IP), and the connection is successfully established; the cluster network management node acquires a subnet where an edge node needing to configure the route is located, issues bridging information and route configuration information to the network management node of the corresponding RIO subnet, and configures the RIO route through the bridging information and the route configuration information;
(3) the cluster network acquires the state change information of the RIO sub-network, the network management node of the RIO sub-network writes a port-write packet through a port of a mode of reporting a hardware event by a switching chip in the RIO network, reports the dynamic network access and network quit information of the network node of the network in real time, reports the state information and the execution result to the cluster network management software through a TCP/IP protocol, and performs distributed management on a plurality of RIO networks.
In the embodiments described below, each node needs to be connected to a switching network, and the network management node can configure routes between edge nodes to implement RIO communications at the edge nodes.
RapidIO adopts a three-layer hierarchical system structure which is respectively a logic specification layer, a message transmission layer and a physical layer, wherein the logic specification layer is positioned at the highest layer, defines all protocols and packet formats and provides necessary information for initiating and completing transactions by an endpoint device; the message transmission layer is a middle layer and comprises a destination address specified by source equipment and defines RapidIO address space and routing information required by packet transmission between end point devices; the physical layer is a bottom layer, describes device level interface information, and adopts a packet transmission mechanism to control the hierarchical division of the electrical characteristics, the low-level error management and the like. The method ensures that new transaction types are added to any layer without changing specifications of other layers, provides design flexibility, and supports better front-back compatibility.
The cluster RIO network management establishes and maintains the physical topological relation of all sub-networks and the bridging relation among the networks.
In a RapidIO interconnection system constructed by taking an exchange chip as a core, the exchange chip comprises a routing table, the RapidIO adopts a source route to perform routing transaction, and an output path is determined by searching the routing table to perform routing. The message transport layer contains the destination address specified by the source device.
The RIO node number in the network management node in each RIO network can only be 0, RIO communication can not be carried out across the network, the IDs of the rest RIO nodes keep all the RIO networks of the universe unique, and the sub RIO network management nodes manage all the RIO nodes in the RIO network.
The RIO node number of each RIO network has unique assigned universe, and RIO nodes with unique universe can perform RIO communication.
The whole cluster RIO network is in a star structure, cluster RIO network management software can be deployed in any RIO sub-network, and the RIO sub-network is connected with all other RIO sub-networks through a central network.
The cluster RIO network management software establishes TCP/IP protocol connection with RIO network management nodes in all RIO sub-networks, if the TCP/IP protocol connection fails, the RIO sub-networks can be judged not to be added into the cluster RIO network, when the node where the cluster RIO network management software is located fails, the cluster RIO network management software can be switched to other nodes to run, and then the cluster RIO network management software establishes TCP/IP connection with the RIO network management nodes in all RIO sub-networks again.
See fig. 2. In a cluster network described below, a network management node provides an intermediate level of communication service between the Transmission Control Protocol (TCP) and the internet protocol, providing reliable, orderly, and byte-stream passing TCP/IP protocols between applications running on hosts that communicate over an IP network. All RIO sub-networks are in RIO physical connection with a central RIO network, each RIO sub-network comprises cluster network management software connected with a TCP receiver, TCP abstracts communication of an application program from details of an underlying network, but only one running cluster network management software exists at the same time, and the other cluster network management software is in a READY state, and if the RIO node where the cluster network management software is located is abnormal, the cluster network management software in a certain READY state becomes a running state. The cluster network management software connects the IP section required by the maximum transmission unit containing the transmission medium through the TCP receiver, the TCP connection is managed by the operating system through a programming interface, an instruction is issued to the network management node through the transmission layer, and the network management node reports the RIO node state of the sub-network to the running cluster network management software.
The running cluster network management software has TCP/IP connection with the network management nodes in all the sub-networks, an instruction is issued to the network management nodes through the TCP/IP connection, and the network management nodes report the RIO node state of the sub-networks to the running cluster network management software through the TCP/IP connection.
See fig. 3. The cluster network configures routing of edge nodes of the cross RIO network, establishes and maintains physical topological relations of all sub-networks and bridging relations among the networks, configures routing commands, decomposes the routing configuration commands, and respectively sends the decomposed routing configuration commands to corresponding A, B network management nodes of two RIO sub-networks through TCP/IP connection.
A. And B, the two network management nodes acquire and execute the configuration command, respectively establish the routing of the edge node according to the configuration command, manage and acquire the result by the cluster RIO network, and return the result to the cluster RIO network.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A cluster RIO network management method is characterized by comprising the following steps:
(1) in the RIO network, in a RapidIO interconnection system constructed by taking a switching chip as a core, a network management node in each RIO sub-network is connected with a switching network, cluster network management software communicates with the network management nodes in the sub-RIO networks through Ethernet, distributes configuration routes, queries the routes, inquiring the node state in each RIO network, managing network management nodes in the cluster network in a distributed mode, distributing RIO node numbers with unique universe for all RIO sub-nodes and edge nodes in a sub-network according to the star network physical topological relation of RIO sub-networks, carrying out RIO communication among the edge nodes through routing, establishing and maintaining the topological relation among the network nodes of the sub-network where the RIO sub-nodes are located and a management maintenance table of node communication resources, realizing information interaction with the edge communication nodes in all RIO networks, and monitoring the network communication state of the network nodes in the RIO sub-networks;
(2) the cluster network configures routes between edge nodes in different sub-networks: the cluster network judges whether the sub-network is accessed into the RIO cluster network or not through a transmission control protocol/internet protocol (TCP/IP), and the connection is successfully established; the cluster network management node acquires a subnet where an edge node needing to configure the route is located, issues bridging information and route configuration information to the network management node of the corresponding RIO subnet, and configures the RIO route through the bridging information and the route configuration information;
(3) the cluster network acquires the state change information of the RIO sub-network, the network management node of the RIO sub-network writes port-write of a packet through a port of a mode of reporting a hardware event by a switching chip in the RIO network, reports dynamic network access and network exit information of the network node of the network in real time, reports the state information and an execution result to cluster network management software through a TCP/IP protocol, and performs distributed management on a plurality of RIO networks.
2. The method of cluster RIO network management of claim 1, wherein: each node is connected to a switching network, and a network management node configures routes between edge nodes to communicate from the existing edge nodes RIO.
3. The method of cluster RIO network management of claim 1, wherein: RapidIO adopts a three-layer hierarchical system structure which is respectively a logic specification layer, a message transmission layer and a physical layer, wherein the logic specification layer is positioned at the highest layer, defines all protocols and packet formats and provides necessary information for initiating and completing transactions by an endpoint device; the message transmission layer is a middle layer and comprises a destination address specified by source equipment and defines RapidIO address space and routing information required by packet transmission between end point devices; the physical layer is a bottom layer, describes device level interface information, and adopts a packet transmission mechanism to control the hierarchical division of the electrical characteristics, the low-level error management and the like.
4. The method of claim 1, wherein the clustered RIO network management establishes and maintains physical topological relationships of all sub-networks and bridging relationships between networks.
5. The method of cluster RIO network management of claim 1, wherein: in a RapidIO interconnection system constructed by taking an exchange chip as a core, the exchange chip comprises a routing table, RapidIO adopts a source route to perform routing transaction, an output path is determined by searching the routing table to perform routing, cluster network management software communicates with network management nodes in a sub-RIO network through an Ethernet, configuration routes are issued, and node state instructions in each RIO network are inquired and inquired, so that the distributed management effect is achieved.
6. The method of cluster RIO network management of claim 1, wherein: the RIO node number in the network management node in each RIO network can only be 0, RIO communication can not be carried out across the network, the IDs of the rest RIO nodes keep all the RIO networks of the universe unique, and the sub RIO network management nodes manage all the RIO nodes in the RIO network.
7. The method of cluster RIO network management of claim 1, wherein: the RIO node number of each RIO network has unique assigned universe, and RIO nodes with unique universe perform RIO communication.
8. The method of cluster RIO network management of claim 1, wherein: the whole cluster RIO network is in a star structure, cluster RIO network management software is deployed in any RIO sub-network, and the RIO sub-network is connected with all other RIO sub-networks through a central network.
9. The method of cluster RIO network management of claim 1, wherein: and when the node where the cluster RIO network management software is positioned fails, the cluster RIO network management software is switched to other nodes to run, and then establishes TCP/IP connection with the RIO network management nodes in all the RIO sub-networks again.
10. The method of cluster RIO network management of claim 1, wherein: configuring routing of edge nodes of a cross RIO network by a cluster network, establishing and maintaining physical topological relations of all sub-networks and bridging relations among networks, configuring a routing command, decomposing the routing configuration command, and respectively sending the routing configuration command to corresponding A, B network management nodes of two RIO sub-networks through TCP/IP connection; A. and B, the two network management nodes acquire and execute the configuration command, respectively establish the routing of the edge node according to the configuration command, manage and acquire the result by the cluster RIO network, and return the result to the cluster RIO network.
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