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A method of establishing an iscsi session and an iscsi initiator

An initiator and session establishment technology, applied in the field of network communication, can solve problems such as occupying large bandwidth and host CPU resources, link congestion, affecting transmission efficiency, etc., to achieve sufficient network bandwidth, reduce TCP connections, and improve transmission efficiency.

Inactive Publication Date: 2011-12-14
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, TCP / IP network data transmission requires a large amount of bandwidth and host CPU resources, causing most of the server's resources to be used to process TCP connections.
In addition, there are only a limited number of physical links between the iSCSI initiator and the storage system. These limited physical links are occupied by a large number of TCP connections, which may easily lead to link congestion and affect transmission efficiency.

Method used

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  • A method of establishing an iscsi session and an iscsi initiator

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Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] The main methods provided by the present invention are as figure 2 As shown, the following steps may be included:

[0028] Step 201: When the iSCSI initiator establishes an iSCSI session, it judges whether there is a TCP connection for the iSCSI session currently, and if yes, executes step 202; otherwise, executes step 203.

[0029] Step 202: Establish an iSCSI session on the existing TCP connection for the iSCSI session, and end the process.

[0030] Step 203: the iSCSI initiator performs equivalent path detection from the iSCSI initiator to the iSCSI target;

[0031] Step 204: Establish TCP connections for iSCSI sessions on the detected equal-cost paths.

[0032] Step 205: Establish an iSCSI session on the established TCP connection. ...

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Abstract

The invention provides a method for establishing an Internet Small Computer System Interface (iSCSI) session and an iSCSI initiator. When the iSCSI initiator establishes an iSCSI session with an iSCSI target, it determines whether the current iSCSI initiator and the iSCSI target are between the iSCSI initiator and the iSCSI target. There is a Transmission Control Protocol (TCP) connection for the iSCSI session, if so, the iSCSI session is established on the existing TCP connection for the iSCSI session; otherwise, the iSCSI initiator performs an equivalent path probe to the iSCSI target. A TCP connection for an iSCSI session is established on the equivalent path to the destination, and an iSCSI session is established on the TCP connection. The invention can fully utilize the network bandwidth and save the host CPU resources.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a method for establishing an iSCSI session and an iSCSI initiator. Background technique [0002] Internet Small Computer System Interface (iSCSI) is a transmission protocol based on TCP / IP. It adopts TCP / IP encapsulation and reliable transmission of SCSI commands between the client and the storage system. A typical application environment of the iSCSI protocol is as follows: figure 1 shown. Set the iSCSI initiator (Initiator) on the client, and set the iSCSI target (Target) on the storage system. First, establish a TCP connection between the iSCSI initiator and iSCSI target, and then establish an iSCSI session (Session) on the TCP connection. The SCSI report The file exchange is performed on the iSCSI session established on the TCP connection. Among them, there are two types of iSCSI sessions specified in the iSCSI protocol: discovery session (Discovery Session) a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06
Inventor 陈乾业
Owner NEW H3C TECH CO LTD