Инструкции По Установке для 3com S7906E

 

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When configuring IPC, go to these sections for information you are interested in: 

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Enabling IPC Performance Statistics 

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Displaying and Maintaining IPC 

IPC Overview 

Inter-Process Communication (IPC) is a reliable communication mechanism among different nodes. 

The following are the basic concepts in IPC. 

An IPC node is an entity supporting IPC; it is an independent processing unit. In actual application, an 

IPC node corresponds to one CPU. 

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One centralized device has only one CPU, therefore corresponding to one node. 

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An Intelligent Resilient Framework (IRF) is an interconnection of several centralized devices, with 

each member device corresponding to one node. Therefore, an IRF corresponds to multiple nodes. 

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Typically a distributed device is available with multiple boards, each having one CPU, some boards 

are available with multiple CPUs. Some distributed devices may be available with multiple CPUs, 

for example service CPU and OAM CPU. Therefore, a distributed device corresponds to multiple 

nodes. 

Therefore, in actual application, IPC is mainly applied on an IRF or distributed device; it provides a 

reliable transmission mechanism between different devices and boards. 

An IPC link is a connection between any two IPC nodes. There is one and only one link between any 

two nodes for packet sending and receiving. All IPC nodes are fully connected. 

IPC links are created when the system is initialized: When a node starts up, it sends handshake packets 

to other nodes; a connection is established between them if the handshake succeeds. 

The system identifies the link connectivity between two nodes using link status. An IPC node can have 

multiple links, each having its own status. 

A channel is a communication interface for an upper layer application module of a node to communicate 

with an application module of a peer node. Each node assigns a locally unique channel number to each 

upper layer application module. 

Data of an upper layer application module is sent to the IPC module through a channel, and the IPC 

module sends the data to a peer node through the link. The relationship between a node, link and 

channel is as shown in 

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