CN103037031A - Internet protocol (IP) address administration method of internet small computer system interface (ISCSI) target device - Google Patents
Internet protocol (IP) address administration method of internet small computer system interface (ISCSI) target device Download PDFInfo
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- CN103037031A CN103037031A CN201210540300XA CN201210540300A CN103037031A CN 103037031 A CN103037031 A CN 103037031A CN 201210540300X A CN201210540300X A CN 201210540300XA CN 201210540300 A CN201210540300 A CN 201210540300A CN 103037031 A CN103037031 A CN 103037031A
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Abstract
The invention discloses an internet protocol (IP) address administration method of an internet small computer system interface (ISCSI) target device. The method comprises the following steps: A, receiving first information from an ISCSI starter, wherein a source address in the first information is an IP address of the ISCSI starter and a destination address of the first information is a virtual IP address of the ISCSI target device; B, based on the Hash algorithm, choosing a physical internet access from multiple physical internet accesses of the ISCSI target device according to the IP address of the ISCSI starter in the first information and the virtual IP address of the ISCSI target device in the first information, and recording a corresponding relation between the IP address of the ISCSI starter and an IP address of the chosen physical internet access; and C, replacing the destination address in the first information by the IP address of the chosen physical internet access according to the corresponding relation, and then sending the first information.
Description
Technical field
The application relates to computer and network technology, relates in particular to the IP address management method of a kind of Internet Small Computer Systems Interface (iSCSI, Internet Small Computer System Interface) object machine.
Background technology
Internet Small Computer Systems Interface (iSCSI, Internet Small Computer System Interface) be a kind of agreement based on TCP/IP, be used for developing and managing interconnecting between IP memory device and the client etc., and create storage area network (SAN).SAN is so that the SCSI protocol application becomes possibility in high speed data transmission networks, and this transmission is carried out between a plurality of data storage networks with data block rank (block-level).
The SCSI structure is based on customer end/server mode, and its common applied environment is: equipment is adjacent to each other, and these equipment are connected by SCSI bus.The major function of iSCSI is encapsulation and the transmitting process of carrying out mass data between the client on the TCP/IP network (starter initiator) and memory device (object machine target).In addition, iSCSI provides at IP network encapsulation scsi command, and operates on the TCP.
In order to increase device bandwidth, dispose a plurality of network interfaces often for the network storage equipment based on iscsi technology, each network interface has IP address separately, like this, different iSCSI starters can be connected to the different network interfaces of same iscsi target device, reaches the purpose of flow equalization.But, in the many situations of the number of iSCSI starter, need Admin Administration iSCSI starter to be connected corresponding relation with the IP of iscsi target device, this has brought the extra work amount to the keeper, and the mode of this manual intervention differs and guarantees surely the load balancing of flow between a plurality of network interfaces fully.
Summary of the invention
The application provides a kind of IP address management method of iscsi target device, can guarantee that the connection of different iSCSI starters is evenly distributed on the different physical internet ports of iscsi target device.
The IP address management method of a kind of iscsi target device that the application provides comprises:
A, receive the first message from the iSCSI starter, the source address in described the first message is the IP address of iSCSI starter, and destination address is the virtual ip address of iscsi target device;
B, according to the IP address of the iSCSI starter in described the first message and the virtual ip address of iscsi target device, from a plurality of physical internet ports of iscsi target device, select a physical internet ports based on hash algorithm, the corresponding relation of the IP address of record iSCSI starter and the IP address of selected physical internet ports;
C, according to described corresponding relation, the destination address in the first message is replaced with the IP address of selected physical internet ports, then send described the first message.
Preferably, after the described step C, further comprise:
Reception is from the second message of iscsi target device, and the source address of described the second message is the IP address of some physical internet ports of iscsi target device, and destination address is the IP address of iSCSI starter;
The source address of the second message is replaced with the virtual ip address of iscsi target device, then send described the second message.
Preferably, the method further comprises:
When certain physical internet ports that detects the iscsi target device breaks down, calculate according to virtual ip address and the IP address that is connected to the iSCSI starter of the described physical internet ports that breaks down, iSCSI connection migration that will be related with described iSCSI starter is to other normal physical internet ports of iscsi target device.
As can be seen from the above technical solutions, the iscsi target device externally provides a unique virtual ip address, and this virtual ip address is used for the iSCSI starter and sets up the iSCSI connection; And inner at the iscsi target device, based on IP address and the virtual ip address of iSCSI starter, according to certain hash algorithm, will connect from the iSCSI of iSCSI starter and be redirected on certain physical internet ports of iscsi target device.By selecting suitable hash algorithm, can guarantee that the connection of different iSCSI starters is evenly distributed on the different physical internet ports of iscsi target device.Further; if certain physical internet ports on the iscsi target device breaks down when service can not be provided; can recomputate cryptographic Hash according to the IP address, the iSCSI connection migration on the fault network interface to other normal network interfaces, is reached the purpose of path redundancy protection.
Description of drawings
The IP address management method flow diagram of a kind of iscsi target device that Fig. 1 provides for the embodiment of the present application.
Embodiment
This programme proposes a kind of IP address management method of iscsi target device, and namely the iscsi target device externally provides a unique virtual ip address, and this virtual ip address is used for the iSCSI starter and sets up the iSCSI connection; And inner at the iscsi target device, based on IP address and the virtual ip address of iSCSI starter, according to certain hash algorithm, will connect from the iSCSI of iSCSI starter and be redirected on certain physical internet ports of iscsi target device.By selecting suitable hash algorithm, can guarantee that the connection of different iSCSI starters is evenly distributed on the different physical internet ports of iscsi target device.
Further; if certain physical internet ports on the iscsi target device breaks down when service can not be provided; can recomputate cryptographic Hash according to the IP address, the iSCSI connection migration on the fault network interface to other normal network interfaces, is reached the purpose of path redundancy protection.
Clearer for the know-why, characteristics and the technique effect that make the present techniques scheme, below in conjunction with specific embodiment the present techniques scheme is described in detail.
The IP address management method flow of a kind of iscsi target device that Fig. 1 provides for the embodiment of the present application comprises the steps:
Step 101: receive the first message from the iSCSI starter, the source address in described the first message is the IP address of iSCSI starter, and destination address is the virtual ip address of iscsi target device;
Step 102: according to the IP address of the iSCSI starter in described the first message and the virtual ip address of iscsi target device, from a plurality of physical internet ports of iscsi target device, select a physical internet ports based on hash algorithm, the corresponding relation of the IP address of record iSCSI starter and the IP address of selected physical internet ports;
Step 103: according to described corresponding relation, the destination address in the first message is replaced with the IP address of selected physical internet ports, then send described the first message.
Through above-mentioned steps, a concrete physical internet ports that being connected between iSCSI starter and the iscsi target device is redirected to the iscsi target device, after this, if the iscsi target device is then carried out following steps to iSCSI starter transmission message:
Step 104: receive the second message from the iscsi target device, the source address of described the second message is the IP address of some physical internet ports of iscsi target device, and destination address is the IP address of iSCSI starter;
Step 105: the source address of the second message is replaced with the virtual ip address of iscsi target device, then send described the second message.
If when certain physical internet ports that detects the iscsi target device breaks down, calculate according to virtual ip address and the IP address that is connected to the iSCSI starter of the described physical internet ports that breaks down, iSCSI connection migration that will be related with described iSCSI starter is to other normal physical internet ports of iscsi target device.
The IP address of the virtual ip address in the present techniques scheme and the physical internet ports of iscsi target device mainly contains following purposes at the phase same network segment:
As the external unique IP interface of whole iscsi target device, when the iSCSI starter required to connect, destination address was this virtual ip address;
Carry out Hash operation with the source IP address of client, according to the Hash operation result, the iSCSI starter is connected a physical internet ports that is redirected to the iscsi target device with iSCSI between the iscsi target device;
When certain physical internet ports of iscsi target device breaks down, utilize the IP address of virtual ip address and iSCSI starter to recomputate after, with iSCSI connection migration other normal physical internet ports to the iscsi target device.
By using the present techniques scheme, can be achieved as follows technique effect:
Automatically set up the connection between iSCSI starter and the iscsi target device, reduce keeper's workload; When having a large amount of iSCSI starter, can automatic equalization iSCSI be connected to the distribution on a plurality of physical internet ports of iscsi target device according to hash algorithm, thus the iSCSI flow adaptively on a plurality of physical internet ports of balanced iscsi target device.Further, the application's scheme can also provide iSCSI to connect function of redundancy protection.
The above only is the application's preferred embodiment; not in order to limit the application's protection range; all within the spirit and principle of present techniques scheme, any modification of making, be equal to replacement, improvement etc., all should be included within the scope of the application's protection.
Claims (3)
1. the IP address management method of an Internet Small Computer Systems Interface iscsi target device is characterized in that, comprising:
A, receive the first message from the iSCSI starter, the source address in described the first message is the IP address of iSCSI starter, and destination address is the virtual ip address of iscsi target device;
B, according to the IP address of the iSCSI starter in described the first message and the virtual ip address of iscsi target device, from a plurality of physical internet ports of iscsi target device, select a physical internet ports based on hash algorithm, the corresponding relation of the IP address of record iSCSI starter and the IP address of selected physical internet ports;
C, according to described corresponding relation, the destination address in the first message is replaced with the IP address of selected physical internet ports, then send described the first message.
2. method according to claim 1 is characterized in that, after the described step C, further comprises:
Reception is from the second message of iscsi target device, and the source address of described the second message is the IP address of some physical internet ports of iscsi target device, and destination address is the IP address of iSCSI starter;
The source address of the second message is replaced with the virtual ip address of iscsi target device, then send described the second message.
3. method according to claim 1 is characterized in that, the method further comprises:
When certain physical internet ports that detects the iscsi target device breaks down, calculate according to virtual ip address and the IP address that is connected to the iSCSI starter of the described physical internet ports that breaks down, iSCSI connection migration that will be related with described iSCSI starter is to other normal physical internet ports of iscsi target device.
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| CN201210540300XA CN103037031A (en) | 2012-12-14 | 2012-12-14 | Internet protocol (IP) address administration method of internet small computer system interface (ISCSI) target device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105515969A (en) * | 2015-12-03 | 2016-04-20 | 华为技术有限公司 | Method and device for establishing link and method and device for sending notification |
| CN105450755B (en) * | 2015-12-01 | 2018-12-14 | 深圳市迪菲特科技股份有限公司 | A kind of method and device of the more host network port performances of equilibrium based on ipsan |
| CN110034951A (en) * | 2019-03-06 | 2019-07-19 | 平安科技（深圳）有限公司 | The failure switching method and iSCSI major heading device of iscsi target device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105450755B (en) * | 2015-12-01 | 2018-12-14 | 深圳市迪菲特科技股份有限公司 | A kind of method and device of the more host network port performances of equilibrium based on ipsan |
| CN105515969A (en) * | 2015-12-03 | 2016-04-20 | 华为技术有限公司 | Method and device for establishing link and method and device for sending notification |
| CN105515969B (en) * | 2015-12-03 | 2018-11-20 | 华为技术有限公司 | A kind of method and apparatus for establishing link and a kind of method and apparatus for sending notice |
| CN110034951A (en) * | 2019-03-06 | 2019-07-19 | 平安科技（深圳）有限公司 | The failure switching method and iSCSI major heading device of iscsi target device |
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