CN103560913A

CN103560913A - Disaster recovery switching method, equipment and system

Info

Publication number: CN103560913A
Application number: CN201310535276.5A
Authority: CN
Inventors: 李鹤; 徐日东; 黄艳; 罗伯强
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-10-31
Filing date: 2013-10-31
Publication date: 2014-02-05
Also published as: WO2015062538A1

Abstract

The embodiment of the invention discloses a disaster recovery switching method, equipment and system, and relates to the field of communication. According to the disaster recovery switching method, equipment and system, accuracy for detecting the sub-health status of networks between network elements and the network element sub-health status can be improved, so when a network is under a sub-health status or when the network elements are under a sub-health status, timely switching can be achieved, and service loss caused by the situation that the network is under the sub-health status or the network elements are under the sub-health status can be effectively avoided. The method includes the steps that the front network element determines that the network between the front network element and the rear network element is under the sub-health status according to the service delay detected by the front network element and message response delay between the front network element and the rear network element, or when the front network element determines that the rear network element is under the sub-health status according to a status indication message sent by the rear network element, the status indication message is used for indicating the state of the rear network element, and the front network element switches a user carrying out service on the rear network element to a disaster recovery network element.

Description

A kind of disaster tolerance switching method, equipment and system

Technical field

The present invention relates to the communications field, relate in particular to a kind of disaster tolerance switching method, equipment and system.

Background technology

In communication system, for example network interconnection agreement (Internet Protocol, be called for short IP) IP multimedia subsystem, IMS (IP Multimedia Core Network Subsystem, be called for short IMS) in, service bearer network fault due between network element, causes the network sub-health state between network element; Or network element internal is due to low memory, intercommunication failure and other reasons, cause network element in sub-health state, the sub-health state of the network between network element and the sub-health state of network element all can cause business impaired, so, impaired for fear of the business causing when the sub-health state, need to promptly and accurately detect the sub-health state of network and the sub-health state of network element, and carry out disaster tolerance switching.

But prior art can't accurately detect the sub-health state of network or network element, network or network element can not be switched in time when sub-health state, the business that can not effectively avoid network or network element to cause in sub-health state is impaired.

Summary of the invention

The embodiment of the present invention provides a kind of disaster tolerance switching method, equipment and system, can improve the network sub-health state that detects between network element and the accuracy of network element sub-health state, network can be switched in time when sub-health state appears in sub-health state or network element, effectively avoid network to occur that in sub-health state or network element the business that sub-health state causes is impaired.

For achieving the above object, the technical scheme that the embodiment of the present invention adopts is,

First aspect, provides a kind of disaster tolerance switching method, and the method comprises:

Message response time delay between the business continuing time delay that front end network element detects according to described front end network element and described front end network element and rear end network element determines that network between described front end network element and described rear end network element is in sub-health state, or, the status indication information that described front end network element sends according to described rear end network element determines that described rear end network element is in sub-health state, wherein, described status indication information is used to indicate the state of described rear end network element;

Described front end network element switches to disaster tolerance network element by the user of the enterprising industry business of described rear end network element.

In the possible implementation of the first of first aspect, according to first aspect, message response time delay between the business continuing time delay that described front end network element detects according to described front end network element and described front end network element and rear end network element determines that network between described front end network element and described rear end network element, in sub-health state, comprising:

If described front end network element is determined the business continuing time delay that described front end network element detects and is greater than the first Preset Time, and the message response time delay between described front end network element and rear end network element is greater than the second Preset Time, the network between definite described front end network element and described rear end network element is in sub-health state.

In the possible implementation of the second of first aspect, in conjunction with the possible implementation of the first of first aspect, if described front end network element is determined the business continuing time delay that described front end network element detects and is greater than the first Preset Time, and the message response time delay between described front end network element and rear end network element is greater than the second Preset Time, the network between definite described front end network element and described rear end network element, in sub-health state, comprising:

Described front end network element judges whether the business continuing time delay that described front end network element detects is greater than the first Preset Time;

If described front end network element is determined the business continuing time delay that described front end network element detects and is greater than the first Preset Time, judge whether the message response time delay between described front end network element and rear end network element is greater than the second Preset Time;

If determine, the message response time delay between described front end network element and rear end network element is greater than the second Preset Time, and the network between definite described front end network element and described rear end network element is in sub-health state.

In the third possible implementation of first aspect, in conjunction with first aspect, the status indication information that described front end network element sends according to described rear end network element determines that described rear end network element, in sub-health state, comprising:

If described front end network element continuous at least twice receives the status indication information of the described rear end of the indication network element sub-health state of described rear end network element transmission, described front end network element determines that described rear end network element is in sub-health state.

In the 4th kind of possible implementation of first aspect, in conjunction with first aspect, described front end network element switches to disaster tolerance network element by the user of the enterprising industry business of described rear end network element, comprising:

Described front end network element is divided into n group according to the quantity of described disaster tolerance network element by the user of the enterprising industry business of described rear end network element, the respectively corresponding different disaster tolerance network element of each group, and wherein, n is the quantity of described disaster tolerance network element;

Described front end network element is divided into respectively k part by each the group user in described n group user;

Described front end network element utilizes each the group user in described n group user respectively and switches to for k time on the disaster tolerance network element corresponding with described user, switches respectively each time the portion in described k part.

In the 5th kind of possible implementation of first aspect, in conjunction with the 4th kind of possible implementation of first aspect or first aspect, described front end network element switches to disaster tolerance network element by the user of the enterprising industry business of described rear end network element, also comprises:

If described front end network element is determined the network recovery health status between described front end network element and described rear end network element, or, the status indication information that described front end network element sends according to described rear end network element is determined the described rear end network element state of getting well, or, described front end network element determines that network between described front end network element and described disaster tolerance network element is in sub-health state, or, the status indication information that described front end network element sends according to described disaster tolerance network element determines that described disaster tolerance network element is in sub-health state, stop the user of the enterprising industry business of described rear end network element to switch to disaster tolerance network element.

Second aspect, provides a kind of disaster tolerance switching method, and the method comprises:

Rear end network element detects the state of described rear end network element, and wherein, the state of described rear end network element comprises sub-health state and health status;

Described rear end network element sends status indication information to described front end network element, so that the status indication information that described front end network element sends according to described rear end network element determines that described rear end network element is when sub-health state, the user of the enterprising industry business of described rear end network element is switched to disaster tolerance network element, wherein, described status indication information is used to indicate the state of described rear end network element.

In the possible implementation of the first of second aspect, according to second aspect, described rear end network element detects the state of described rear end network element, comprising:

If described rear end network element determines that continuously at least 3 sense cycle, the business extent of damage is greater than predetermined threshold value, and heartbeat is normal, determine that the state of described rear end network element is sub-health state.

The third aspect, provides a kind of front end network element, comprising:

Determining unit, for the business continuing time delay that detects according to described front end network element and the message response time delay between described front end network element and rear end network element, determine that network between described front end network element and described rear end network element is in sub-health state, or, the status indication information sending according to described rear end network element determines that described rear end network element is in sub-health state, wherein, described status indication information is used to indicate the state of described rear end network element;

Switch unit, for switching to disaster tolerance network element by the user of the enterprising industry business of described rear end network element.

In the possible implementation of the first of the third aspect, according to the third aspect, described determining unit specifically for: if determine, the business continuing time delay that described front end network element detects is greater than the first Preset Time, and the message response time delay between described front end network element and rear end network element is greater than the second Preset Time, the network between definite described front end network element and described rear end network element is in sub-health state.

In the possible implementation of the second of the third aspect, in conjunction with the possible implementation of the first of the third aspect, described determining unit also for: judge whether the business continuing time delay that described front end network element detects is greater than the first Preset Time;

If determine, the business continuing time delay that described front end network element detects is greater than the first Preset Time, judges whether the message response time delay between described front end network element and rear end network element is greater than the second Preset Time;

In the third possible implementation of the third aspect, according to the third aspect, described determining unit specifically for: if continuously at least twice receive the described rear end of indication network element that described rear end network element the sends status indication information in sub-health state, determine that described rear end network element is in sub-health state.

In the 4th kind of possible implementation of the third aspect, according to the third aspect, described switch unit specifically for: according to the quantity of described disaster tolerance network element, the user of the enterprising industry of described rear end network element business is divided into n group, the respectively corresponding different disaster tolerance network element of each group, wherein, n is the quantity of described disaster tolerance network element;

In the 5th kind of mode in the cards of the third aspect, the 4th kind of possible implementation in conjunction with the third aspect or the third aspect, described determining unit also for: determine the network recovery health status between described front end network element and described rear end network element, or, the status indication information sending according to described rear end network element is determined the described rear end network element state of getting well, or, determine that network between described front end network element and described disaster tolerance network element is in sub-health state, or, the status indication information sending according to described disaster tolerance network element determines that described disaster tolerance network element is in sub-health state.

Fourth aspect, provides a kind of rear end network element, comprising:

Detecting unit, for detection of the state of described rear end network element, wherein, the state of described rear end network element comprises sub-health state and health status;

Transmitting element, for sending status indication information to described front end network element, so that the status indication information that described front end network element sends according to described rear end network element determines that described rear end network element is when sub-health state, the user of the enterprising industry business of described rear end network element is switched to disaster tolerance network element, wherein, described status indication information is used to indicate the state of described rear end network element.

In the possible implementation of the first of fourth aspect, according to fourth aspect, described detecting unit specifically for: if determine continuously, at least 3 sense cycle, the business extent of damages are greater than predetermined threshold value, and heartbeat is normal, determine that the state of described rear end network element is sub-health state.

The 5th aspect, a kind of disaster tolerance switched system is provided, comprise: the front end network element as described in any one in five kinds of possible implementations of implementation to the as possible in the first of the third aspect or the third aspect, rear end network element as described in implementation as possible in the first of fourth aspect or fourth aspect, and at least one disaster tolerance network element.

Therefore, a kind of disaster tolerance switching method, equipment and system that the embodiment of the present invention provides, message response time delay between the business continuing time delay that front end network element detects according to described front end network element and described front end network element and rear end network element determines that network between described front end network element and described rear end network element is in sub-health state, or, the status indication information that described front end network element sends according to described rear end network element determines that described rear end network element is in sub-health state, wherein, described status indication information is used to indicate the state of described rear end network element; Described front end network element switches to disaster tolerance network element by the user of the enterprising industry business of described rear end network element.So, can improve the network sub-health state that detects between network element and the accuracy of network element sub-health state, network can be switched in time when sub-health state appears in sub-health state or network element, effectively avoid network to occur that in sub-health state or network element the business that sub-health state causes is impaired.Overcome the sub-health state that prior art can't accurately detect network or network element, network or network element can not have been switched in time when sub-health state, the impaired defect of business that can not effectively avoid network or network element to cause in sub-health state.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

The schematic flow sheet of a kind of disaster tolerance switching method that Fig. 1 provides for the embodiment of the present invention;

Fig. 2 is the schematic flow sheet that in IMS system, user carries out basic call;

Fig. 3 A is user assignment schematic diagram in load sharing networking;

The schematic diagram of disaster tolerance switching method in a kind of load sharing networking that Fig. 3 B provides for the embodiment of the present invention;

Fig. 4 A is user assignment schematic diagram in local preferably networking;

The schematic diagram of disaster tolerance switching method in the preferred networking in a kind of this locality that Fig. 4 B provides for the embodiment of the present invention;

The schematic flow sheet of the another kind of disaster tolerance switching method that Fig. 5 provides for the embodiment of the present invention;

The schematic flow sheet of the another kind of disaster tolerance switching method that Fig. 6 provides for the embodiment of the present invention;

The schematic flow sheet of the another kind of disaster tolerance switching method that Fig. 7 provides for the embodiment of the present invention;

A kind of front end network element structural representation that Fig. 8 provides for the embodiment of the present invention;

A kind of back-end network meta structure schematic diagram that Fig. 9 provides for the embodiment of the present invention;

The another kind of front end network element structural representation that Figure 10 provides for the embodiment of the present invention;

The another kind of back-end network meta structure schematic diagram that Figure 11 provides for the embodiment of the present invention;

A kind of disaster tolerance switched system structural representation that Figure 12 provides for the embodiment of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.

The disaster tolerance switching method that the embodiment of the present invention provides is applicable to IMS system, can also be applicable to any one network and when sub-health state, carry out in the communication system of disaster tolerance switching; The embodiment of the present invention does not limit this, and the embodiment of the present invention only be take IMS system and described as example.

Embodiment mono-

Referring to Fig. 1, a kind of disaster tolerance switching method for the embodiment of the present invention provides, as shown in Figure 1, can comprise the following steps:

101: the message response time delay between the business continuing time delay that front end network element detects according to described front end network element and described front end network element and rear end network element determines that network between described front end network element and described rear end network element is in sub-health state, or, the status indication information that described front end network element sends according to described rear end network element determines that described rear end network element is in sub-health state, wherein, described status indication information is used to indicate the state of described rear end network element;

Wherein, front end network element is relative concept with rear end network element, the orientation determination transmitting according to message, front end network element refers to the network element that sends business request information, rear end network element refers to the network element that receives business request information and return to response message, front end network element and rear end network element are two adjacent network elements, for example, referring to Fig. 2, in IMS system, user's business request information can be by P-CSCF, I-CSCF, the network elements such as S-CSCF are processed successively, at P-CSCF, business request information is sent in this process of I-CSCF processing, this patent thinks that P-CSCF is front end network element, I-CSCF is rear end network element.In like manner, at I-CSCF, business request information is mail in S-CSCF processing procedure, think that I-CSCF is front end network element, S-CSCF is rear end network element, so a network element in network is in different message process, may be as front end network element, also may be as rear end network element.

Wherein, front end network element and rear end network element can be various network elements in communication network, the embodiment of the present invention does not limit for the concrete form of front end network element and rear end network element, for example, can be P-CSCF, I-CSCF, S-CSCF etc., the embodiment of the present invention is related concrete network element such as P-CSCF, I-CSCF, S-CSCF etc. in full, is only exemplary effect, front end network element and rear end network element is not caused to any concrete restriction.

Wherein, sub-health state comprises the sub-health state of network and the sub-health state of rear end network element between front end network element and rear end network element, describes respectively below.

One, the sub-health state of network between front end network element and rear end network element

Between front end network element and rear end network element, the sub-health state of network refers to due to the service bearer network Quality Down between front end network element and rear end network element, show as packet loss, shake, time delay, cause service damage, but front end network element and rear end network element heartbeat are not interrupted.

Exemplary, message response time delay between the business continuing time delay that described front end network element detects according to described front end network element and described front end network element and rear end network element determines that network between described front end network element and described rear end network element, in sub-health state, can comprise:

If described front end network element is determined the business continuing time delay that described front end network element detects and is greater than the first Preset Time, and the message response time delay between described front end network element and rear end network element is greater than the second Preset Time, the network between definite described front end network element and described rear end network element is in sub-health state;

Wherein, the business continuing time delay that described front end network element detects is that described front end network element sends invitation request (INVITE) to the time period receiving between ring response, if the business continuing time delay that described front end network element detects is greater than described the first Preset Time, can think and exist and cause the impaired problem of business in network, business continuing time delay is extended, but it should be noted that, this causes the impaired problem of business not necessarily to appear between this front end network element and this rear end network element, referring to Fig. 2, because user's request message is by P-CSCF, I-CSCF, the network elements such as S-CSCF are processed successively, so, network inferior health between other network elements also may cause the business continuing time delay that this front end network element detects to extend, for example, when front end network element is P-CSCF, when rear end network element is I-CSCF, if network inferior health between I-CSCF and S-CSCF, the end-to-end time delay that continues of business that can cause front end network element P-CSCF to detect extends.

The first Preset Time can arrange as required, the embodiment of the present invention does not limit this, preferably, according to the common stand-by period of user, can be set to 6s, because most of user may independently be hung up after waiting for 6s, so, after user's on-hook, even if there is sub-health state, switch also nonsensical.

Wherein, the message response time delay between described front end network element and rear end network element is: described front end network element send INVITE to described rear end network element to the time period receiving between the response message (100Tying) that described rear end network element returns; If the message response time delay between described front end network element and described rear end network element is greater than described the second Preset Time, can think that network between this front end network element and this rear end network element is in sub-health state, cause message response time delay to extend.

Similarly, the second Preset Time can arrange as required, and the embodiment of the present invention does not limit this, preferred, experiences tolerable message response time delay between the network element drawing according to user's communication, can be set to 3s.

Concrete, can realize by following steps:

Steps A, front end network element judge whether the business continuing time delay that front end network element detects is greater than the first Preset Time; If not, perform step B, if so, perform step C;

Between step B, continuation and rear end network element, carry out business transmission;

If front end network element is determined the business continuing time delay that front end network element detects and is less than or equal to the first Preset Time, illustrate that the residing network of described front end network element is in health status, business can be not impaired, so, can continue and rear end network element between carry out business transmission.

Step C, judge whether the message response time delay between front end network element and rear end network element is greater than the second Preset Time, if not, performs step B, if so, determine that network between described front end network element and described rear end network element is in sub-health state.

If front end network element is determined the business continuing time delay that front end network element detects and is greater than the first Preset Time, determine that the message response time delay between front end network element and rear end network element is greater than the second Preset Time, can think and exist and cause the impaired problem of business in network, the time delay that makes to continue extends, in order further to determine this causes the impaired problem of business whether to appear between this front end network element and this rear end network element, can be by judging whether message response time delay between front end network element and rear end network element is greater than the second Preset Time and determines, if the message response time delay between described front end network element and rear end network element is less than or equal to the second Preset Time, illustrate that network between described front end network element and described rear end network element is in health status, can continue and described rear end network element between carry out business transmission, if the message response time delay between described front end network element and rear end network element is greater than the second Preset Time, the network between definite described front end network element and described rear end network element is in sub-health state.

Two, the sub-health state of rear end network element

The sub-health state of rear end network element refers to that rear end network element can not process the state of business completely, network element finishing sector business ability in rear end declines or Business Processing failure, but front end network element can not interrupt to the heartbeat message of rear end network element, as rear end network element under normal circumstances can be processed the flow of 10G simultaneously, due to rear end network element internal fault, make rear end network element can only process the flow of 5G, cause the customer service of half to can not get processing.

The sub-health state of network element can be caused by many-sided reason.

For example, due to network element memory overflow, fragmentation is serious, the too much internal memory of some specific transactions consumption and under telecommunications cloud environment the reason such as virtual machine specification adjustment, all may cause Installed System Memory not enough, cause the impaired or total loss of service part, but network element heartbeat may or normal, network element state can be thought sub-health state.

Or, hardware problem due to network element internal: as loosening in part netting twine, network card chip defect or software issue: bag as wrong in router switch packet loss, Microsoft Loopback Adapter fault under telecommunications cloud environment, all can cause intercommunication problem, cause the impaired or total loss of partial service, make network element in sub-health state.

Rear end network element can detect the service conditions of self, and according to the result detecting, determines the state of rear end network element, and this state comprises health status or sub-health state.

The status indication information that front end network element can send according to rear end network element determines that rear end network element is in sub-health state, and wherein, status indication information can be used to indicate the state of rear end network element,

For example: if front end network element continuous at least twice receives the status indication information of the indication rear end network element sub-health state of described rear end network element transmission, front end network element can determine that rear end network element is in sub-health state;

Wherein, status indication information can be arranged in the response message of rear end network element, and for example, rear end network element can define and in the 200OK response of Option message, increase X-health-status header field and indicate network element sub-health state:

SIP/2.0200OK

Via:SIP/2.0/UDP167.52.190.151:8090;branch=z9hG4b;

X-health-status:server=167.52.190.214;status=Good;

Call-ID:sqavbj17veazvd@P.ne11.domain.huawei.com

From:<sip:p2.ne11.domain.huawei.com>;tag=q1tggasv

To:<sip:167.52.190.214>;tag=ggx5cxtc

CSeq:1OPTIONS

Supported:pref,privacy,precondition,100rel

Content-Length:0

Described server parameter identification sends described rear end network element host name or the address of described push-notification-answer message;

Rear end network element state described in described status parameter identification; If status=Good, represents that described rear end network element is in health status; If status=Subheathly, represents that described rear end network element is in sub-health state.

102: front end network element switches to disaster tolerance network element by the user of the enterprising industry business of described rear end network element.

Wherein, described disaster tolerance network element can be: have the network element of identical function with described rear end network element;

Preferably, for avoiding message to impact, the user on the network element of rear end can be switched to disaster tolerance network element in batches.

For example, specifically can pass through following process implementation:

Front end network element is divided into n group according to the quantity of described disaster tolerance network element by the user of the enterprising industry business of described rear end network element, the respectively corresponding different disaster tolerance network element of each group, and wherein, n is the quantity of described disaster tolerance network element;

Front end network element is divided into respectively k part by each the group user in described n group user;

Front end network element utilizes each the group user in described n group user respectively and switches to for k time on the disaster tolerance network element corresponding with described user, switches respectively each time the portion in described k part.

The above-mentioned method of in batches switching can be applied in different networking situations, for example, and load sharing networking (referring to Fig. 3 A, Fig. 3 B), local preferably networking (referring to Fig. 4 A, Fig. 4 B) etc.

SBC and CSCF only take below as example, for the handoff procedure of disaster tolerance in batches in these two kinds of networking situations, be elaborated respectively.Certainly, SBC and CSCF are changed to do other network elements (as ATS, DRA etc.) applicable too.

One, referring to Fig. 3 A, user assignment schematic diagram in the load sharing networking providing for the embodiment of the present invention, wherein, SBC is front end network element, CSCF is rear end network element, as shown in Figure 3A, first user's distribution procedure is described.User on each SBC is on average registered to CSCF node.The number of users that need to switch in order to reduce CSCF node failure time, in the embodiment of the present invention, SBC adopts consistency Hash to carry out user's distribution, is implemented as follows:

SBC1-SBC4 will need to carry out the user of business on separately respectively, according to IP multimedia pUblic identity (IMPU), carry out Hash, be mapped on m virtual service node (for guaranteeing the evenness of Hash distribution of results, the value of m can not be too little), and then the user on each Virtual Service node is mapped on CSCF network element.In Fig. 3 A, exist in 4 CSCF network element situations, m virtual service node can be divided into 4 parts, every portion maps to respectively a CSCF, the user who is numbered on the virtual service node of 1～m/4 can be mapped to CSCF1, user on the virtual service node of m/4+1～m/2 maps to CSCF2, and the user on the virtual service node of m/2+1～3m/4 maps to CSCF3, and the user on the virtual service node of 3m/4+1～m maps to CSCF4.

Network between SBC1 and CSCF1 in sub-health state or CSCF1 network element in sub-health state, for the user who was originally engaged in the enterprising industry of CSCF1, need to switch on other available CSCF, on CSCF2, CSCF3, CSCF4, referring to Fig. 3 B, the schematic diagram that in a kind of load sharing networking providing for the embodiment of the present invention, disaster tolerance switches, as shown in Figure 3 B

To be numbered the virtual service node of 1～m/4, be divided into 3 parts: 1～m/12, m/12+1～m/6, m/6+1～m/4; Wherein, the user who numbers on the virtual service node of 1～m/12 need be mapped on CSCF2; The user who is numbered on the virtual service node of m/12+1～m/6 need be mapped on CSCF3; The user who is numbered on the virtual service node of m/6+1～m/4 need be mapped on CSCF4;

User on the virtual service node of numbering 1～m/12 is divided into k to be criticized and is mapped on CSCF2;

In like manner, by being numbered user on the virtual service node of m/12+1～m/6, being divided into k and criticizing and be mapped on CSCF3;

By being numbered user on the virtual service node of m/6+1～m/4, being divided into k and criticizing and be mapped on CSCF4;

Certainly, under this networking, because bearing the business of SBC1-SBC4 on CSCF1, so, during specific implementation, by SBC1-SBC4, by belonging to the user who itself serves on CSCF1, switched respectively.

Two, referring to Fig. 4 A, user assignment schematic diagram in the preferred networking in this locality providing for the embodiment of the present invention, wherein, SBC is front end network element, CSCF is rear end network element, as shown in Figure 4 A, first user's distribution procedure is described.SBC preferentially selects local CSCF dispatch user, carries out the user of business according to the distribution of passage shown in solid arrow in Fig. 4 A, and final allocation result is:

The user that SBC1 need to carry out business is assigned on CSCF1 according to IP multimedia pUblic identity;

The user that SBC2 need to carry out business is assigned on CSCF2 according to IP multimedia pUblic identity;

The user that SBC3 need to carry out business is assigned on CSCF3 according to IP multimedia pUblic identity;

The user that SBC4 need to carry out business is assigned on CSCF4 according to IP multimedia pUblic identity.

Network between SBC1 and CSCF1 in sub-health state or CSCF1 network element in sub-health state, for the user who was originally engaged in the enterprising industry of CSCF1, the available CSCF that need to switch to other is upper, as on CSCF2, CSCF3, CSCF4, referring to Fig. 4 B, the schematic diagram that in the preferred networking in a kind of this locality providing for the embodiment of the present invention, disaster tolerance switches in batches, as shown in Figure 4 B, this disaster tolerance switching method can be:

SBC1 is distributed to the user in the enterprising industry business of CSCF1 on m virtual service node according to IP multimedia pUblic identity;

M virtual service node divided equally according to other available CSCF quantity, as CSCF2, CSCF3, CSCF4 can use, be divided into 3 equal portions, the every portion in these 3 parts is mapped to respectively on corresponding CSCF; For example, for the user who is numbered on the virtual service node of 1～m/3, map to CSCF2; For the user who is numbered on the virtual service node of m/3+1～2m/3, map to CSCF3; For the user who is numbered on the virtual service node of 2m/3+1～m, map to CSCF4;

By being numbered user on the virtual service node of 1～m/3, being divided into k and criticizing and be mapped on CSCF2;

In like manner, by being numbered user on the virtual service node of m/3+1～2m/3, being divided into k and criticizing and be mapped on CSCF3;

By being numbered user on the virtual service node of 2m/3+1～m, being divided into k and criticizing and be mapped on CSCF4.

Further, described method can also comprise:

Described front end network element is when carrying out disaster tolerance switching, detect network between described front end network element and the described rear end network element state of whether getting well, or the described rear end network element state of whether getting well, or whether the network between described front end network element and described disaster tolerance network element is in sub-health state, or whether described disaster tolerance network element is in sub-health state;

For example, the business continuing time delay that front end network element can detect according to front end network element and the message response time delay detection front end network element between front end network element and rear end network element and the network between the network element of the rear end state of whether getting well;

Again for example, the status indication information that front end network element can send according to rear end network element detects the rear end network element state of whether getting well, and wherein, status indication information is used to indicate the state of rear end network element.For example, if rear end network element reverts to health status through manual intervention or other reparation approach, can send the state indication message of indicating health status by forward end network element, front end network element receives after the state indication message of the indication health status that rear end network element sends, if disaster tolerance handoff procedure not yet completes, front end network element can stop switching, and keeps present situation; If disaster tolerance handoff procedure completes, front end network element can keep present situation;

Wherein, described front end network element detects network between described front end network element and described disaster tolerance network element, and whether the method in sub-health state is identical in the method for sub-health state with the network that front end network element detects between described front end network element and described rear end network element, repeats no more herein;

Described front end network element can judge that whether disaster tolerance network element is in sub-health state according to the status indication information of described disaster tolerance network element, wherein, disaster tolerance network element detects this disaster tolerance network element method whether method in sub-health state and forward end network element send status indication information and rear end network element and detects this rear end network element the method for the method in sub-health state and forward end network element transmission status indication information is identical, does not repeat them here.

Therefore, a kind of disaster tolerance switching method that the embodiment of the present invention provides, message response time delay between the business continuing time delay that front end network element detects according to described front end network element and described front end network element and rear end network element determines that network between described front end network element and described rear end network element is in sub-health state, or, the status indication information that described front end network element sends according to described rear end network element determines that described rear end network element is in sub-health state, wherein, described status indication information is used to indicate the state of described rear end network element; Described front end network element switches to disaster tolerance network element by the user of the enterprising industry business of described rear end network element.So, can improve the network sub-health state that detects between network element and the accuracy of network element sub-health state, network when appearring in sub-health state or network element, sub-health state can be switched in time, effectively avoid network to occur that in sub-health state or network element the business that sub-health state causes is impaired, overcome the sub-health state that prior art can't accurately detect network or network element, network or network element can not be switched in time when sub-health state, the impaired defect of business that can not effectively avoid network or network element to cause in sub-health state.

Embodiment bis-

Referring to Fig. 5, the another kind of disaster tolerance switching method for the embodiment of the present invention provides, as shown in Figure 5, can comprise the following steps:

501: rear end network element detects the state of described rear end network element, wherein, the state of described rear end network element comprises sub-health state and health status;

The sub-health state of network element can be caused by many-sided reason.

For example, due to network element memory overflow, fragmentation is serious, the too much internal memory of some specific transactions consumption and under telecommunications cloud environment the reason such as virtual machine specification adjustment, all may cause Installed System Memory not enough, cause the impaired or total loss of service part, but network element heartbeat may or normal, can think that network element state is sub-health state.

Rear end network element can detect the service conditions of self, and according to the result detecting, determines the state of rear end network element, and this state comprises health status or sub-health state.For example, rear end network element can periodically detect the service conditions of rear end network element, if rear end network element determines that continuously at least 3 sense cycle, the business extent of damage is greater than predetermined threshold value, and heartbeat is normal, determines that the state of described rear end network element is sub-health state; Rear end network element can be sub-health state by the status modifier of rear end network element, and wherein, predetermined threshold value can arrange as required, and the embodiment of the present invention does not specifically limit this.

Optionally, rear end network element, when rear end network element is sub-health state, detects business recovery in one-period, and state that can rear end network element is set to health status.

502: rear end network element sends status indication information to described front end network element, so that the status indication information that described front end network element sends according to described rear end network element determines that described rear end network element is when sub-health state, the user of the enterprising industry business of described rear end network element is switched to disaster tolerance network element, wherein, described status indication information is used to indicate the state of described rear end network element.

SIP/2.0200OK

Via:SIP/2.0/UDP167.52.190.151:8090;branch=z9hG4b;

X-health-status:server=167.52.190.214;status=Subheathly;

Call-ID:sqavbj17veazvd@P.ne11.domain.huawei.com

From:<sip:p2.ne11.domain.huawei.com>;tag=q1tggasv

To:<sip:167.52.190.214>;tag=ggx5cxtc

CSeq:1OPTIONS

Supported:pref,privacy,precondition,100rel

Content-Length:0

Disaster tolerance network element can be: have the network element of identical function with described rear end network element;

Therefore in the embodiment of the present invention, rear end network element detects the state of described rear end network element, wherein, the state of described rear end network element comprises sub-health state and health status; Described rear end network element sends status indication information to described front end network element, so that the status indication information that described front end network element sends according to described rear end network element determines that described rear end network element is when sub-health state, the user of the enterprising industry business of described rear end network element is switched to disaster tolerance network element, wherein, described status indication information is used to indicate the state of described rear end network element.So, can improve the accuracy that detects network element sub-health state, network element can be switched in time when sub-health state, the business of effectively avoiding network element to occur that sub-health state causes is impaired.Overcome the sub-health state that prior art can't accurately detect network or network element, network or network element can not have been switched in time when sub-health state, the impaired defect of business that can not effectively avoid network or network element to cause in sub-health state.

Embodiment tri-

The disaster tolerance switching method of the present embodiment be take IMS system and is described as example, and referring to Fig. 2, in the IMS system of setting for the embodiment of the present invention, user carries out the application scenarios of basic call,

Exemplary, at P-CSCF1, message being sent in this process of S-CSCF1 processing, the business continuing time delay that P-CSCF1 detects is to send INVITE till receive the process that a session of ring response 180 is connected from P-CSCF1, with T _iNV-180P1represent; In the present embodiment, the first Preset Time is 6s.

Message response time delay between P-CSCF1 and S-CSCF1 is: P-CSCF1 sends INVITE till receive a session duration of the response message 100Tying that S-CSCF1 returns.With T _iNV-100P1represent, in the present embodiment, the second Preset Time is 3s.

As shown in Figure 6, can comprise the following steps:

601:P-CSCF1 sends INVITE to S-CSCF1;

602:S-CSCF1 receives INVITE, and sends ALERTING message 180 and response message 100Tying to P-CSCF1;

603:P-CSCF1 receives ALERTING message 180 and response message 100Tying, calculates the business continuing time delay T between INVITE and ALERTING message 180 _iNV-180P1whether be greater than 6s; If T _iNV-180P1>6s, carries out 604; If T _iNV-180P1<6s, carries out 606;

604:P-CSCF1 calculates the message response time delay T between INVITE and response message 100Tying _iNV-100P1whether be greater than 3s; If T _iNV-100P1>3s, carries out 605; If T _iNV-100P1<3s, carries out 606;

605:P-CSCF1 switches to disaster tolerance network element by the user of the enterprising industry business of S-CSCF1;

Between 606:P-CSCF1 and S-CSCF1, proceed business transmission.

Therefore in the embodiment of the present invention, P-CSCF1 sends INVITE to S-CSCF1; S-CSCF1 receives INVITE, and sends ALERTING message 180 and response message 100Tying to P-CSCF1; P-CSCF1 receives ALERTING message 180 and response message 100Tying, calculates the business continuing time delay T between INVITE and ALERTING message 180 _iNV-180P1message response time delay T between >6s, INVITE and response message 100Tying _iNV-100P1>3s; P-CSCF1 switches to disaster tolerance network element by the user of the enterprising industry business of S-CSCF1.So, can improve Sampling network sub-health state accuracy, network can be switched in time when sub-health state, the business of effectively avoiding network to cause in sub-health state is impaired.Overcome the sub-health state that prior art can't accurately detect network or network element, network or network element can not have been switched in time when sub-health state, the impaired defect of business that can not effectively avoid network or network element to cause in sub-health state.

Embodiment tetra-

Referring to Fig. 7, be the another kind of disaster tolerance switching method that the embodiment of the present invention provides, at P-CSCF1, message is sent in this process of S-CSCF1 processing, as shown in Figure 7, can comprise the following steps:

701:S-CSCF1 detects the state of described S-CSCF1; Wherein, the state of described S-CSCF1 comprises sub-health state and health status;

The sub-health state of S-CSCF1 refers to that S-CSCF1 can not process the state of business completely, S-CSCF1 processes professional ability decline or Business Processing failure, but P-CSCF1 can not interrupt to the heartbeat message of S-CSCF1, as S-CSCF1 under normal circumstances can process the flow of 10G simultaneously, due to S-CSCF1 internal fault, make S-CSCF1 can only process the flow of 5G, cause the customer service of half to can not get processing.

The sub-health state of S-CSCF1 can be caused by many-sided reason.

For example, due to S-CSCF1 memory overflow, fragmentation is serious, the too much internal memory of some specific transactions consumption and under telecommunications cloud environment the reason such as virtual machine specification adjustment, all may cause Installed System Memory not enough, cause the impaired or total loss of service part, but S-CSCF1 heartbeat may or normal, can think that S-CSCF1 state is sub-health state.

Or, hardware problem due to S-CSCF1 inside: as loosening in part netting twine, network card chip defect or software issue: bag as wrong in router switch packet loss, Microsoft Loopback Adapter fault under telecommunications cloud environment, all can cause intercommunication problem, cause the impaired or total loss of partial service, make S-CSCF1 in sub-health state.

S-CSCF1 can detect the service conditions of self, and according to the result detecting, determines the state of S-CSCF1, and this state comprises health status or sub-health state.For example, S-CSCF1 can periodically detect the service conditions of rear end network element, if determine continuously, at least 3 sense cycle, the business extent of damage is greater than predetermined threshold value, and heartbeat is normal, determines that the state of S-CSCF1 is sub-health state; S-CSCF1 can be sub-health state by the status modifier of S-CSCF1, and wherein, predetermined threshold value can arrange as required, and the embodiment of the present invention does not specifically limit this.

Optionally, S-CSCF1, when S-CSCF1 is sub-health state, detects business recovery in one-period, and state that can S-CSCF1 is set to health status.

702:P-CSCF1 sends heartbeat message to S-CSCF1;

703:S-CSCF1 receives after heartbeat message, send carry X-health-status header field push-notification-answer message 200 to P-CSCF1;

Wherein, the push-notification-answer message 200 that carries X-health-status header field can be used to refer to S-CSCF1 sub-health state:

SIP/2.0200OK

Via:SIP/2.0/UDP167.52.190.151:8090;branch=z9hG4b;

X-health-status:server=167.52.190.214;status=Subhealthly;

Call-ID:sqavbj17veazvd@P.ne11.domain.huawei.com

From:<sip:p2.ne11.domain.huawei.com>;tag=q1tggasv

To:<sip:167.52.190.214>;tag=ggx5cxtc

CSeq:1OPTIONS

Supported:pref,privacy,precondition,100rel

Content-Length:0

Described server parameter identification sends described S-CSCF1 host name or the address of described push-notification-answer message 200;

S-CSCF1 state described in described status parameter identification; If status=Good, represents that described S-CSCF1 is in health status; If status=Subheathly, represents that described S-CSCF1 is in sub-health state.

704:P-CSCF1 determines that according to the value that receives status in the push-notification-answer message 200 that described S-CSCF1 sends S-CSCF1 is in sub-health state;

For example: if described P-CSCF1 continuously at least twice receives status=Subheathly in the push-notification-answer message 200 that described S-CSCF1 sends, determine that S-CSCF1 is in sub-health state;

705:P-CSCF1 switches to disaster tolerance network element by the user of the enterprising industry business of S-CSCF1.

Therefore in the embodiment of the present invention, S-CSCF1 detects the state of described S-CSCF1; Wherein, the state of described S-CSCF1 comprises inferior health (Subhealthly) state and health (Good) state; If S-CSCF1 determines that continuously at least 3 sense cycle, the business extent of damage is greater than predetermined threshold value, and heartbeat is normal, determine that the state of described rear end network element is sub-health state; Transmission carries the push-notification-answer message 200 of X-health-status header field to P-CSCF1; P-CSCF1 determines that according to the value that receives status in the push-notification-answer message 200 that described S-CSCF1 sends S-CSCF1 is in sub-health state; P-CSCF1 switches to disaster tolerance network element by the user of the enterprising industry business of S-CSCF1.So, can improve the accuracy that detects network element sub-health state, network element can be switched in time when sub-health state, the business of effectively avoiding network element to occur that sub-health state causes is impaired.Overcome the sub-health state that prior art can't accurately detect network or network element, network or network element can not have been switched in time when sub-health state, the impaired defect of business that can not effectively avoid network or network element to cause in sub-health state.

Embodiment five

Referring to Fig. 8, be a kind of front end network element 80 that the embodiment of the present invention provides, as shown in Figure 8, this front end network element 80 can comprise:

Determining unit 801, for the business continuing time delay that detects according to described front end network element 80 and the message response time delay between described front end network element and rear end network element, determine that network between described front end network element 80 and described rear end network element is in sub-health state, or, the status indication information sending according to described rear end network element determines that described rear end network element is in sub-health state, wherein, described status indication information is used to indicate the state of described rear end network element;

Wherein, sub-health state comprises the sub-health state of network and the sub-health state of rear end network element between front end network element 80 and rear end network element, describes respectively below.

One, the sub-health state of network between front end network element 80 and rear end network element

Between front end network element 80 and rear end network element, the sub-health state of network refers to due to the service bearer network Quality Down between front end network element 80 and rear end network element, show as packet loss, shake, time delay, cause service damage, but front end network element 80 and rear end network element heartbeat are not interrupted.

Exemplary, described determining unit 801 determines that for the business continuing time delay that detects according to described front end network element 80 and the message response time delay between described front end network element 80 and rear end network element network between described front end network element 80 and described rear end network element, in sub-health state, can comprise:

If described determining unit 801 determines that the business continuing time delay that described front end network element 80 detects is greater than the first Preset Time, and the message response time delay between described front end network element 80 and rear end network element is greater than the second Preset Time, the network between definite described front end network element 80 and described rear end network element is in sub-health state;

Wherein, the business continuing time delay that described front end network element 80 detects is that described front end network element 80 sends invitation request (INVITE) to the time period receiving between ring response, if the business continuing time delay that described front end network element 80 detects is greater than described the first Preset Time, can think and exist and cause the impaired problem of business in network, business continuing time delay is extended, but it should be noted that, this causes the impaired problem of business not necessarily to appear between this front end network element and this rear end network element, referring to Fig. 2, because user's request message is by P-CSCF, I-CSCF, the network elements such as S-CSCF are processed successively, so, network inferior health between other network elements also may cause the business continuing time delay that this front end network element 80 detects to extend, for example, when front end network element is P-CSCF, when rear end network element is I-CSCF, if network inferior health between I-CSCF and S-CSCF, can cause the business continuing time delay that front end network element P-CSCF detects to extend.

Wherein, the message response time delay between described front end network element 80 and rear end network element is: described front end network element 80 send INVITE to described rear end network element to the time period receiving between the response message (100Tying) that described rear end network element returns; If the message response time delay between described front end network element 80 and described rear end network element is greater than described the second Preset Time, can think that network between this front end network element 80 and described rear end network element is in inferior health, cause message response time delay to extend.

Concrete, determining unit 801 for:

Judge whether the business continuing time delay that front end network element 80 detects is greater than the first Preset Time;

If determining unit 801 determines that the business continuing time delay that front end network element 80 detects is less than or equal to the first Preset Time, illustrate that the residing network of described front end network element 80 is in health status, business can be not impaired, so, described front end network element 80 can continue and rear end network element between carry out business transmission;

If determining unit 801 determines that the business continuing time delay that front end network element 80 detects is greater than the first Preset Time, determine that the message response time delay between front end network element 80 and rear end network element is greater than the second Preset Time, can think and exist and cause the impaired problem of business in network, business continuing time delay is extended, in order further to determine this causes the impaired problem of business whether to appear between this front end network element 80 and this rear end network element, can be by judging whether message response time delay between front end network element 80 and rear end network element is greater than the second Preset Time and determines, if the message response time delay between described front end network element 80 and rear end network element is less than or equal to the second Preset Time, illustrate that network between described front end network element 80 and described rear end network element is in health status, can continue and described rear end network element between carry out business transmission, if the message response time delay between described front end network element 80 and rear end network element is greater than the second Preset Time, the network between definite described front end network element 80 and described rear end network element is in sub-health state.

Two, the sub-health state of rear end network element

The sub-health state of network element can be caused by many-sided reason.

The status indication information that determining unit 801 can send according to rear end network element determines that rear end network element is in sub-health state, and wherein, status indication information can be used to indicate the state of rear end network element,

For example: if determining unit 801 continuous at least twice receives the status indication information of the indication rear end network element sub-health state of described rear end network element transmission, determining unit 801 can determine that rear end network element is in sub-health state;

SIP/2.0200OK

Via:SIP/2.0/UDP167.52.190.151:8090;branch=z9hG4b;

X-health-status:server=167.52.190.214;status=good;

Call-ID:sqavbj17veazvd@P.ne11.domain.huawei.com

From:<sip:p2.ne11.domain.huawei.com>;tag=q1tggasv

To:<sip:167.52.190.214>;tag=ggx5cxtc

CSeq:1OPTIONS

Supported:pref,privacy,precondition,100rel

Content-Length:0

Further, described determining unit 801 also for:

Determine network between described front end network element 80 and the described rear end network element state of whether getting well, or the described rear end network element state of whether getting well, or whether the network between described front end network element 80 and described disaster tolerance network element is in sub-health state, or whether described disaster tolerance network element is in sub-health state;

Network for example, described in the business continuing time delay that, described determining unit 801 detects according to described front end network element 80 and the message response time delay detection between described front end network element 80 and rear end network element between front end network element 80 and the described rear end network element state of whether getting well;

Again for example, the status indication information that described determining unit 801 sends according to described rear end network element detects the described rear end network element state of whether getting well, and wherein, described status indication information is used to indicate the state of described rear end network element;

Wherein, described determining unit 801 is determined network between described front end network elements 80 and described disaster tolerance network element, and whether the method in sub-health state is identical in the method for sub-health state with the network between the definite described front end network element 80 of described determining unit 801 and described rear end network element, repeats no more herein;

Described determining unit 801 can judge that whether disaster tolerance network element is in sub-health state according to the status indication information of described disaster tolerance network element, wherein, disaster tolerance network element detects this disaster tolerance network element method whether method in sub-health state and forward end network element 80 send status indication informations and rear end network element and detects this rear end network element the method for the method in sub-health state and forward end network element 80 transmission status indication informations is identical, does not repeat them here.

Switch unit 802, for switching to disaster tolerance network element by the user of the enterprising industry business of described rear end network element.

For example, described switch unit 802 specifically for:

Switch unit 802 is divided into n group according to the quantity of described disaster tolerance network element by the user of the enterprising industry business of described rear end network element, the respectively corresponding different disaster tolerance network element of each group, and wherein, n is the quantity of described disaster tolerance network element;

Switch unit 802 is divided into respectively k part by the every a user in described n group user;

Switch unit 802 utilizes each the group user in described n group user respectively and switches to for k time on the disaster tolerance network element corresponding with described user, switches respectively each time the portion in described k part.

Switch unit 802 in front end network element 80 described above can be applied in different networking situations, for example, and load sharing networking (referring to Fig. 3 A, Fig. 3 B), local preferably networking (referring to Fig. 4 A, Fig. 4 B) etc.

SBC and CSCF only take below as example, for the switch unit in SBC in these two kinds of networking situations, be elaborated respectively.Certainly, SBC and CSCF are changed to do other network elements (as ATS, DRA etc.) applicable too.

Switch unit in SBC1 will be numbered the virtual service node of 1～m/4, is divided into 3 parts: 1～m/12, m/12+1～m/6, m/6+1～m/4; Wherein, the user who numbers on the virtual service node of 1～m/12 need be mapped on CSCF2; The user who is numbered on the virtual service node of m/12+1～m/6 need be mapped on CSCF3; The user who is numbered on the virtual service node of m/6+1～m/4 need be mapped on CSCF4;

Switch unit in SBC1 is divided into k by the user on the virtual service node of numbering 1～m/12 and criticizes and be mapped on CSCF2;

In like manner, the switch unit in SBC1 is divided into k and criticizes and be mapped on CSCF3 being numbered user on the virtual service node of m/12+1～m/6;

Switch unit in SBC1 is divided into k and criticizes and be mapped on CSCF4 being numbered user on the virtual service node of m/6+1～m/4;

Two, referring to Fig. 4 A, user assignment schematic diagram in the preferred networking in this locality providing for the embodiment of the present invention, wherein, SBC is front end network element, CSCF is rear end network element, as shown in Figure 4 A, first user's distribution procedure is described.SBC is preferentially chosen in local CSCF dispatch user, carries out the user of business according to the distribution of passage shown in solid arrow in Fig. 4 A.Final allocation result is:

Network between SBC1 and CSCF1 in sub-health state or CSCF1 network element in sub-health state, for the user who was originally engaged in the enterprising industry of CSCF1, the available CSCF that need to switch to other is upper, as on CSCF2, CSCF3, CSCF4, referring to Fig. 4 B, the schematic diagram that in the preferred networking in a kind of this locality providing for the embodiment of the present invention, disaster tolerance switches, as shown in Figure 4 B, the switch unit in SBC1 specifically for:

Switch unit in SBC1 is distributed to the user in the enterprising industry business of CSCF1 on m virtual service node according to IP multimedia pUblic identity;

Switch unit in SBC1 is divided equally m virtual service node according to other available CSCF quantity, as CSCF2, CSCF3, CSCF4 can use, be divided into 3 equal portions, and the every portion in these 3 parts is mapped to respectively on corresponding CSCF; For example, for the user who is numbered on the virtual service node of 1～m/3, map to CSCF2; For the user who is numbered on the virtual service node of m/3+1～2m/3, map to CSCF3; For the user who is numbered on the virtual service node of 2m/3+1～m, map to CSCF4;

Switch unit in SBC1 is divided into k and criticizes and be mapped on CSCF2 being numbered user on the virtual service node of 1～m/3;

In like manner, the switch unit in SBC1 is divided into k and criticizes and be mapped on CSCF3 being numbered user on the virtual service node of m/3+1～2m/3;

Switch unit in SBC1 is divided into k and criticizes and be mapped on CSCF4 being numbered user on the virtual service node of 2m/3+1～m.

Further, described switch unit 802 also for:

If the network recovery health status that described determining unit 801 is determined between described front end network element 80 and described rear end network element, or, the status indication information that described determining unit 801 sends according to described rear end network element is determined the described rear end network element state of getting well, or, network between described determining unit 801 definite described front end network elements 80 and described disaster tolerance network element is in sub-health state, or, the status indication information that described determining unit 801 sends according to described disaster tolerance network element determines that described disaster tolerance network element is in sub-health state, 802 of described switch units stop the user of the enterprising industry business of described rear end network element to switch to disaster tolerance network element.

Therefore, the front end network element 80 that the embodiment of the present invention provides, message response time delay between the business continuing time delay detecting according to described front end network element 80 and described front end network element 80 and rear end network element determines that network between described front end network element and described rear end network element is in sub-health state, or, the status indication information sending according to described rear end network element determines that described rear end network element is in sub-health state, wherein, described status indication information is used to indicate the state of described rear end network element; Described front end network element 80 switches to disaster tolerance network element by the user of the enterprising industry business of described rear end network element.So, can improve the network sub-health state that detects between network element and the accuracy of network element sub-health state, network can be switched in time when sub-health state appears in sub-health state or network element, effectively avoid network to occur that in sub-health state or network element the business that sub-health state causes is impaired.Overcome the sub-health state that prior art can't accurately detect network or network element, network or network element can not have been switched in time when sub-health state, the impaired defect of business that can not effectively avoid network or network element to cause in sub-health state.

Embodiment six

Referring to Fig. 9, be a kind of rear end network element 90 that the embodiment of the present invention provides, as shown in Figure 9, this rear end network element 90 can comprise:

Detecting unit 901, for detection of the state of described rear end network element 90, wherein, the state of described rear end network element 90 comprises sub-health state and health status;

Wherein, the sub-health state of rear end network element 90 refers to that rear end network element 90 can not process the state of business completely, rear end network element 90 is processed professional ability decline or Business Processing failure, but front end network element can not interrupt to the heartbeat message of rear end network element 90, as rear end network element 90 under normal circumstances can be processed the flow of 10G simultaneously, due to rear end network element 90 internal faults, make rear end network element 90 can only process the flow of 5G, cause the customer service of half to can not get processing.

The sub-health state of network element can be caused by many-sided reason.

Detecting unit 901 can detect the service conditions of rear end network element 90, and according to the result detecting, determines the state of rear end network element 90, and this state comprises health status or sub-health state.For example, detecting unit 901 can periodically detect the service conditions of rear end network element 90, if detecting unit 90 determines that continuously at least 3 sense cycle, the business extent of damage is greater than predetermined threshold value, and heartbeat is normal, determine that the state of described rear end network element 90 is sub-health state; Detecting unit 901 can be sub-health state by the status modifier of rear end network element 90, and wherein, predetermined threshold value can arrange as required, and the embodiment of the present invention does not specifically limit this.

Optionally, detecting unit 901, when rear end network element 90 is sub-health state, detects business recovery in one-period, and state that can rear end network element 90 is set to health status.

Transmitting element 902, for sending status indication information to described front end network element, so that the status indication information that described front end network element sends according to described rear end network element 90 determines that described rear end network element 90 is when sub-health state, the user of the enterprising industry business of described rear end network element 90 is switched to disaster tolerance network element, wherein, described status indication information is used to indicate the state of described rear end network element 90;

Wherein, wherein, status indication information can be arranged in the response message of rear end network element 90, and for example, rear end network element 90 can define and in the 200OK response of Option message, increase X-health-status header field and indicate network element sub-health state:

SIP/2.0200OK

Via:SIP/2.0/UDP167.52.190.151:8090;branch=z9hG4b;

X-health-status:server=167.52.190.214;status=good;

Call-ID:sqavbj17veazvd@P.ne11.domain.huawei.com

From:<sip:p2.ne11.domain.huawei.com>;tag=q1tggasv

To:<sip:167.52.190.214>;tag=ggx5cxtc

CSeq:1OPTIONS

Supported:pref,privacy,precondition,100rel

Content-Length:0

Described server parameter identification sends described rear end network element 90 host name or the address of described push-notification-answer message;

Network element 90 states in rear end described in described status parameter identification; If status=good, represents that described rear end network element 90 is in health status; If status=Subheathly, represents that described rear end network element 90 is in sub-health state.

Therefore the rear end network element 90 that the embodiment of the present invention provides, detects the state of described rear end network element 90, wherein, the state of described rear end network element 90 comprises sub-health state and health status; Described rear end network element 90 sends status indication information to described front end network element, so that the status indication information that described front end network element sends according to described rear end network element 90 determines that described rear end network element 90 is when sub-health state, the user of the enterprising industry business of described rear end network element 90 is switched to disaster tolerance network element, wherein, described status indication information is used to indicate the state of described rear end network element 90.So, can improve the accuracy that detects network element sub-health state, network element can be switched in time when sub-health state, the business of effectively avoiding network element to occur that sub-health state causes is impaired.Overcome the sub-health state that prior art can't accurately detect network or network element, network or network element can not have been switched in time when sub-health state, the impaired defect of business that can not effectively avoid network or network element to cause in sub-health state.

Embodiment seven

Referring to Figure 10, for a kind of front end network element 100 that the embodiment of the present invention provides, as shown in figure 10, this equipment comprises: processor 1001, memory 1002, communication unit 1003, at least one communication bus 1004, for realizing the connection and intercommunication mutually between these devices;

Processor 1001 may be a central processing unit (English: central processing unit, referred to as CPU);

Memory 1002, can be volatile memory (English: volatile memory), for example random access memory (English: random-access memory, abbreviation: RAM); Or nonvolatile memory (English: non-volatile memory), read-only memory (English: read-only memory for example, abbreviation: ROM), flash memory (English: flash memory), hard disk (English: hard disk drive, abbreviation: HDD) or solid state hard disc (English: solid-state drive, abbreviation: SSD); Or the combination of the memory of mentioned kind, and provide instruction and data to processor 1001;

Communication unit 1003, for and ext nal network element between carry out transfer of data.

Wherein, processor 1001, for the business continuing time delay that detects according to described front end network element 100 and the message response time delay between described front end network element and rear end network element, determine that network between described front end network element 100 and described rear end network element is in sub-health state, or, the status indication information sending according to described rear end network element determines that described rear end network element is in sub-health state, wherein, described status indication information is used to indicate the state of described rear end network element;

Wherein, sub-health state comprises the sub-health state of network and the sub-health state of rear end network element between front end network element 100 and rear end network element, describes respectively below.

One, the sub-health state of network between front end network element 100 and rear end network element

Between front end network element 100 and rear end network element, the sub-health state of network refers to due to the service bearer network Quality Down between front end network element 100 and rear end network element, show as packet loss, shake, time delay, cause service damage, but front end network element 100 and rear end network element heartbeat are not interrupted.

Exemplary, described processor 1001 determines that for the business continuing time delay that detects according to described front end network element 100 and the message response time delay between described front end network element 100 and rear end network element network between described front end network element 100 and described rear end network element, in sub-health state, can comprise:

If described processor 1001 determines that the business continuing time delay that described front end network element 100 detects is greater than the first Preset Time, and the message response time delay between described front end network element 100 and rear end network element is greater than the second Preset Time, the network between definite described front end network element 100 and described rear end network element is in sub-health state;

Wherein, the business continuing time delay that described front end network element 100 detects is that described front end network element 100 sends invitation request (INVITE) to the time period receiving between ring response, if the business continuing time delay that described front end network element 100 detects is greater than described the first Preset Time, can think and exist and cause the impaired problem of business in network, business continuing time delay is extended, but it should be noted that, this causes the impaired problem of business not necessarily to appear between this front end network element and this rear end network element, referring to Fig. 2, because user's request message is by P-CSCF, I-CSCF, the network elements such as S-CSCF are processed successively, so, network inferior health between other network elements also may cause the business continuing time delay that this front end network element 100 detects to extend, for example, when front end network element is P-CSCF, when rear end network element is I-CSCF, if the inner software and hardware problem of the circuit question between I-CSCF and S-CSCF or S-CSCF, can cause the business continuing time delay that front end network element P-CSCF detects to extend.

Wherein, the message response time delay between described front end network element 100 and rear end network element is: described front end network element 100 send INVITE to described rear end network element to the time period receiving between the response message (100Tying) that described rear end network element returns; If the message response time delay between described front end network element 100 and described rear end network element is greater than described the second Preset Time, can think that network between this front end network element 100 and described rear end network element is in inferior health, cause message response time delay to extend.

Concrete, processor 1001 for:

Judge whether the business continuing time delay that front end network element 100 detects is greater than the first Preset Time;

If processor 1001 determines that the business continuing time delay that front end network element detects is less than or equal to the first Preset Time, illustrate that the residing network of described front end network element 100 is in health status, business can be not impaired, so, described front end network element 100 can continue and rear end network element between carry out business transmission;

If processor 1001 determines that the business continuing time delay that front end network element detects is greater than the first Preset Time, determine that the message response time delay between front end network element 100 and rear end network element is greater than the second Preset Time, can think and exist and cause the impaired problem of business in network, business continuing time delay is extended, in order further to determine this causes the impaired problem of business whether to appear between this front end network element 100 and this rear end network element, can be by judging whether message response time delay between front end network element 100 and rear end network element is greater than the second Preset Time and determines, if the message response time delay between described front end network element 100 and rear end network element is less than or equal to the second Preset Time, illustrate that network between described front end network element 100 and described rear end network element is in health status, can continue and described rear end network element between carry out business transmission, if the message response time delay between described front end network element 100 and rear end network element is greater than the second Preset Time, the network between definite described front end network element 100 and described rear end network element is in sub-health state.

Two, the sub-health state of rear end network element

The sub-health state of network element can be caused by many-sided reason.

The status indication information that the rear end network element that processor 1001 can receive according to communication unit 1003 sends determines that rear end network element is in sub-health state, and wherein, status indication information can be used to indicate the state of rear end network element,

For example: if processor 1001 is determined described communication unit 1003 continuous at least twice, receive the status indication information of the indication rear end network element sub-health state of described rear end network element transmission, processor 1001 can determine that rear end network element is in sub-health state;

SIP/2.0200OK

Via:SIP/2.0/UDP167.52.190.151:8090;branch=z9hG4b;

X-health-status:server=167.52.190.214;status=Subheathly;

Call-ID:sqavbj17veazvd@P.ne11.domain.huawei.com

From:<sip:p2.ne11.domain.huawei.com>;tag=q1tggasv

To:<sip:167.52.190.214>;tag=ggx5cxtc

CSeq:1OPTIONS

Supported:pref,privacy,precondition,100rel

Content-Length:0

Further, described processor 1001 also for:

Determine network between described front end network element 100 and the described rear end network element state of whether getting well, or the described rear end network element state of whether getting well, or whether the network between described front end network element 100 and described disaster tolerance network element is in sub-health state, or whether described disaster tolerance network element is in sub-health state;

Network for example, described in the business continuing time delay that, described processor 1001 detects according to described front end network element 100 and the message response time delay detection between described front end network element 100 and rear end network element between front end network element 100 and the described rear end network element state of whether getting well;

Again for example, the status indication information that the described rear end network element that described processor 1001 receives according to communication unit 1003 sends detects the described rear end network element state of whether getting well, and wherein, described status indication information is used to indicate the state of described rear end network element;

Wherein, described processor 1001 is determined network between described front end network elements 100 and described disaster tolerance network element, and whether the method in sub-health state is identical in the method for sub-health state with the network between the definite described front end network element 100 of described processor 1001 and described rear end network element, repeats no more herein;

Described processor 1001 can judge that whether disaster tolerance network element is in sub-health state according to the status indication information of described disaster tolerance network element, wherein, disaster tolerance network element detects this disaster tolerance network element method whether method in sub-health state and forward end network element 100 send status indication informations and rear end network element and detects this rear end network element the method for the method in sub-health state and forward end network element 100 transmission status indication informations is identical, does not repeat them here.

Further, described processor 1001 also for:

The user of the enterprising industry business of described rear end network element is switched to disaster tolerance network element.

For example, described processor 1001 specifically for:

Processor 1001 is divided into n group according to the quantity of described disaster tolerance network element by the user of the enterprising industry business of described rear end network element, the respectively corresponding different disaster tolerance network element of each group, and wherein, n is the quantity of described disaster tolerance network element;

Processor 1001 is divided into respectively k part by the every a user in described n group user;

Processor 1001 utilizes each the group user in described n group user respectively and switches to for k time on the disaster tolerance network element corresponding with described user, switches respectively each time the portion in described k part.

Processor 1001 in front end network element 100 described above can be applied in different networking situations, for example, and load sharing networking (referring to Fig. 3 A, Fig. 3 B), local preferably networking (referring to Fig. 4 A, Fig. 4 B) etc.

Processor in SBC1 will be numbered the virtual service node of 1～m/4, is divided into 3 parts: 1～m/12, m/12+1～m/6, m/6+1～m/4; Wherein, the user who numbers on the virtual service node of 1～m/12 need be mapped on CSCF2; The user who is numbered on the virtual service node of m/12+1～m/6 need be mapped on CSCF3; The user who is numbered on the virtual service node of m/6+1～m/4 need be mapped on CSCF4;

Processor in SBC1 is divided into k by the user on the virtual service node of numbering 1～m/12 and criticizes and be mapped on CSCF2;

In like manner, the processor in SBC1 is divided into k and criticizes and be mapped on CSCF3 being numbered user on the virtual service node of m/12+1～m/6;

Processor in SBC1 is divided into k and criticizes and be mapped on CSCF4 being numbered user on the virtual service node of m/6+1～m/4;

Network between SBC1 and CSCF1 in sub-health state or CSCF1 network element in sub-health state, for the user who was originally engaged in the enterprising industry of CSCF1, the available CSCF that need to switch to other is upper, as on CSCF2, CSCF3, CSCF4, referring to Fig. 4 B, the schematic diagram that in the preferred networking in a kind of this locality providing for the embodiment of the present invention, disaster tolerance switches, as shown in Figure 4 B, the processor in SBC1 specifically for:

Processor in SBC1 is distributed to the user in the enterprising industry business of CSCF1 on m virtual service node according to IP multimedia pUblic identity;

Processor in SBC1 is divided equally m virtual service node according to other available CSCF quantity, as CSCF2, CSCF3, CSCF4 can use, be divided into 3 equal portions, and the every portion in these 3 parts is mapped to respectively on corresponding CSCF; For example, for the user who is numbered on the virtual service node of 1～m/3, map to CSCF2; For the user who is numbered on the virtual service node of m/3+1～2m/3, map to CSCF3; For the user who is numbered on the virtual service node of 2m/3+1～m, map to CSCF4;

Processor in SBC1 is divided into k and criticizes and be mapped on CSCF2 being numbered user on the virtual service node of 1～m/3;

In like manner, the processor in SBC1 is divided into k and criticizes and be mapped on CSCF3 being numbered user on the virtual service node of m/3+1～2m/3;

Processor in SBC1 is divided into k and criticizes and be mapped on CSCF4 being numbered user on the virtual service node of 2m/3+1～m.

Further, described processor 1001 also for:

If the network recovery health status that described processor 1001 is determined between described front end network element 100 and described rear end network element, or, the status indication information that described processor 1001 sends according to described rear end network element is determined the described rear end network element state of getting well, or, network between described processor 1001 definite described front end network elements 100 and described disaster tolerance network element is in sub-health state, or, the status indication information that described processor 1001 sends according to described disaster tolerance network element determines that described disaster tolerance network element is in sub-health state, 1001 of described processors stop the user of the enterprising industry business of described rear end network element to switch to disaster tolerance network element.

A kind of front end network element 100 that the embodiment of the present invention provides, therefore, the front end network element 100 that the embodiment of the present invention provides, message response time delay between the business continuing time delay detecting according to described front end network element 100 and described front end network element 100 and rear end network element determines that network between described front end network element and described rear end network element is in sub-health state, or, the status indication information sending according to described rear end network element determines that described rear end network element is in sub-health state, wherein, described status indication information is used to indicate the state of described rear end network element; Described front end network element 100 switches to disaster tolerance network element by the user of the enterprising industry business of described rear end network element.So, can improve the network sub-health state that detects between network element and the accuracy of network element sub-health state, network can be switched in time when sub-health state appears in sub-health state or network element, effectively avoid network to occur that in sub-health state or network element the business that sub-health state causes is impaired.Overcome the sub-health state that prior art can't accurately detect network or network element, network or network element can not have been switched in time when sub-health state, the impaired defect of business that can not effectively avoid network or network element to cause in sub-health state.

Embodiment eight

Referring to Figure 11, for a kind of rear end network element 110 that the embodiment of the present invention provides, as shown in figure 11, this rear end network element 110 can comprise: processor 1101, memory 1102, communication unit 1103, at least one communication bus 1104, for realizing the connection and intercommunication mutually between these devices;

Processor 1101 may be a central processing unit (English: central processing unit, referred to as CPU);

Memory 1102, can be volatile memory (English: volatile memory), for example random access memory (English: random-access memory, abbreviation: RAM); Or nonvolatile memory (English: non-volatile memory), read-only memory (English: read-only memory for example, abbreviation: ROM), flash memory (English: flash memory), hard disk (English: hard disk drive, abbreviation: HDD) or solid state hard disc (English: solid-state drive, abbreviation: SSD); Or the combination of the memory of mentioned kind, and provide instruction and data to processor 1001;

Communication unit 1103, for and ext nal network element between carry out transfer of data.

Wherein, processor 1101, for detection of the state of described rear end network element 110, wherein, the state of described rear end network element 110 comprises sub-health state and health status;

Wherein, the sub-health state of rear end network element 110 refers to that rear end network element 110 can not process the state of business completely, rear end network element 100 is processed professional ability decline or Business Processing failure, but front end network element can not interrupt to the heartbeat message of rear end network element 110, as rear end network element 110 under normal circumstances can be processed the flow of 10G simultaneously, due to rear end network element 110 internal faults, make rear end network element 110 can only process the flow of 5G, cause the customer service of half to can not get processing.

The sub-health state of network element can be caused by many-sided reason.

Processor 1101 can detect the service conditions of rear end network element 110, and according to the result detecting, determines the state of rear end network element 110, and this state comprises health status or sub-health state.For example, processor 1101 can periodically detect the service conditions of rear end network element 110, if processor 1101 determines that continuously at least 3 sense cycle, the business extent of damage is greater than predetermined threshold value, and heartbeat is normal, determine that the state of described rear end network element 110 is sub-health state; Processor 1101 can be sub-health state by the status modifier of rear end network element 110, and wherein, predetermined threshold value can arrange as required, and the embodiment of the present invention does not specifically limit this.

Optionally, processor 1101, when rear end network element 110 is sub-health state, detects business recovery in one-period, and state that can rear end network element 110 is set to health status.

Communication unit 1103 specifically for, to described front end network element, send status indication information, so that the status indication information that described front end network element sends according to described rear end network element 110 determines that described rear end network element 110 is when sub-health state, the user of the enterprising industry business of described rear end network element 110 is switched to disaster tolerance network element, wherein, described status indication information is used to indicate the state of described rear end network element 110;

Wherein, wherein, status indication information can be arranged in the response message of rear end network element 110, and for example, rear end network element 110 can define and in the 200OK response of Option message, increase X-health-status header field and indicate network element sub-health state:

SIP/2.0200OK

Via:SIP/2.0/UDP167.52.190.151:8090;branch=z9hG4b;

X-health-status:server=167.52.190.214;status=Subheathly;

Call-ID:sqavbj17veazvd@P.ne11.domain.huawei.com

From:<sip:p2.ne11.domain.huawei.com>;tag=q1tggasv

To:<sip:167.52.190.214>;tag=ggx5cxtc

CSeq:1OPTIONS

Supported:pref,privacy,precondition,100rel

Content-Length:0

Described server parameter identification sends described rear end network element 110 host name or the address of described push-notification-answer message;

Network element 110 states in rear end described in described status parameter identification; If status=good, represents that described rear end network element 110 is in health status; If status=Subheathly, represents that described rear end network element 110 is in sub-health state.

Therefore the rear end network element 110 that the embodiment of the present invention provides, detects the state of described rear end network element 110, wherein, the state of described rear end network element 110 comprises sub-health state and health status; Described rear end network element 110 sends status indication information to described front end network element, so that the status indication information that described front end network element 110 sends according to described rear end network element 110 determines that described rear end network element 110 is when sub-health state, the user of the enterprising industry business of described rear end network element 110 is switched to disaster tolerance network element, wherein, described status indication information is used to indicate the state of described rear end network element 110.So, can improve the accuracy that detects network element sub-health state, network element can be switched in time when sub-health state, the business of effectively avoiding network element to occur that sub-health state causes is impaired.Overcome the sub-health state that prior art can't accurately detect network or network element, network or network element can not have been switched in time when sub-health state, the impaired defect of business that can not effectively avoid network or network element to cause in sub-health state.

Embodiment nine

Referring to Figure 12, a kind of disaster tolerance switched system providing for the embodiment of the present invention, as shown in figure 12, this disaster tolerance switched system can comprise: the rear end network element described in the front end network element described in above-mentioned arbitrary embodiment, above-mentioned arbitrary embodiment and at least one disaster tolerance network element.

Because above-described embodiment has been done detailed introduction to the concrete function of front end network element and rear end network element, therefore do not repeat them here.

The disaster tolerance switched system of the embodiment of the present invention, message response time delay between the business continuing time delay that front end network element detects according to described front end network element and described front end network element and rear end network element determines that network between described front end network element and described rear end network element is in sub-health state, or, the status indication information that described front end network element sends according to described rear end network element determines that described rear end network element is in sub-health state, wherein, described status indication information is used to indicate the state of described rear end network element; Described front end network element switches to disaster tolerance network element by the user of the enterprising industry business of described rear end network element.Rear end network element detects the state of described rear end network element, and wherein, the state of described rear end network element comprises sub-health state and health status; Described rear end network element sends status indication information to described front end network element, so that the status indication information that described front end network element sends according to described rear end network element determines that described rear end network element is when sub-health state, the user of the enterprising industry business of described rear end network element is switched to disaster tolerance network element, wherein, described status indication information is used to indicate the state of described rear end network element.So, can improve the network sub-health state that detects between network element and the accuracy of network element sub-health state, network can be switched in time when sub-health state appears in sub-health state or network element, effectively avoid network to occur that in sub-health state or network element the business that sub-health state causes is impaired.Overcome the sub-health state that prior art can't accurately detect network or network element, network or network element can not have been switched in time when sub-health state, the impaired defect of business that can not effectively avoid network or network element to cause in sub-health state.

Those skilled in the art can be well understood to, and for convenience and simplicity of description, the specific works process of the unit of foregoing description and system, can, with reference to the corresponding process in preceding method embodiment, not repeat them here.

In the several embodiment that provide in the application, should be understood that, disclosed system, equipment and method, can realize by another way.For example, apparatus embodiments described above is only schematic, for example, the division of described unit, be only that a kind of logic function is divided, during actual realization, can have other dividing mode, for example a plurality of unit or assembly can in conjunction with or can be integrated into another system, or some features can ignore, or do not carry out.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, indirect coupling or the communication connection of device or unit can be electrically, machinery or other form.

The described unit as separating component explanation can or can not be also physically to separate, and the parts that show as unit can be or can not be also physical locations, can be positioned at a place, or also can be distributed in a plurality of network element.Can select according to the actual needs some or all of unit wherein to realize the object of the present embodiment scheme.

In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can be also that the independent physics of unit comprises, also can be integrated in a unit two or more unit.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form that also can adopt hardware to add SFU software functional unit realizes.

The integrated unit that the above-mentioned form with SFU software functional unit realizes, can be stored in a computer read/write memory medium.Above-mentioned SFU software functional unit is stored in a storage medium, comprise some instructions with so that computer equipment (can be personal computer, server, or the network equipment etc.) carry out the part steps of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (Read-Only Memory, be called for short ROM), the various media that can be program code stored such as random access memory (Random Access Memory is called for short RAM), magnetic disc or CD.

One of ordinary skill in the art will appreciate that all or part of step in the whole bag of tricks of above-described embodiment is to come the hardware that instruction is relevant (for example processor) to complete by program, this program can be stored in a computer-readable recording medium, and storage medium can comprise: read-only memory, random asccess memory, disk or CD etc.

Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.

Claims

1. a disaster tolerance switching method, is characterized in that, the method comprises:

2. method according to claim 1, it is characterized in that, message response time delay between the business continuing time delay that described front end network element detects according to described front end network element and described front end network element and rear end network element determines that network between described front end network element and described rear end network element, in sub-health state, comprising:

3. method according to claim 2, it is characterized in that, if described front end network element is determined the business continuing time delay that described front end network element detects and is greater than the first Preset Time, and the message response time delay between described front end network element and rear end network element is greater than the second Preset Time, the network between definite described front end network element and described rear end network element, in sub-health state, comprising:

4. method according to claim 1, is characterized in that, the status indication information that described front end network element sends according to described rear end network element determines that described rear end network element, in sub-health state, comprising:

5. method according to claim 1, is characterized in that, described front end network element switches to disaster tolerance network element by the user of the enterprising industry business of described rear end network element, comprising:

6. method according to claim 1 or 5, is characterized in that, described front end network element switches to disaster tolerance network element by the user of the enterprising industry business of described rear end network element, also comprises:

7. a disaster tolerance switching method, is characterized in that, the method comprises:

8. method according to claim 7, is characterized in that, described rear end network element detects the state of described rear end network element, comprising:

9. a front end network element, is characterized in that, comprising:

10. front end network element according to claim 9, is characterized in that,

Described determining unit specifically for: if determine, the business continuing time delay that described front end network element detects is greater than the first Preset Time, and the message response time delay between described front end network element and rear end network element is greater than the second Preset Time, the network between definite described front end network element and described rear end network element is in sub-health state.

11. front end network elements according to claim 10, is characterized in that,

Described determining unit also for: judge whether the business continuing time delay that described front end network element detects is greater than the first Preset Time;

12. front end network elements according to claim 9, is characterized in that,

Described determining unit specifically for: if continuously at least twice receive the described rear end of indication network element that described rear end network element the sends status indication information in sub-health state, determine that described rear end network element is in sub-health state.

13. front end network elements according to claim 9, is characterized in that,

Described switch unit specifically for: according to the quantity of described disaster tolerance network element, the user of the enterprising industry of described rear end network element business is divided into n group, the respectively corresponding different disaster tolerance network element of each group, wherein, n is the quantity of described disaster tolerance network element;

14. according to the front end network element described in claim 9 or 13, it is characterized in that,

Described determining unit also for: determine the network recovery health status between described front end network element and described rear end network element, or, the status indication information sending according to described rear end network element is determined the described rear end network element state of getting well, or, determine that network between described front end network element and described disaster tolerance network element is in sub-health state, or the status indication information sending according to described disaster tolerance network element determines that described disaster tolerance network element is in sub-health state.

15. 1 kinds of rear end network elements, is characterized in that, comprising:

16. rear end according to claim 15 network elements, is characterized in that,

Described detecting unit specifically for: if determine continuously, at least 3 sense cycle, the business extent of damages are greater than predetermined threshold value, and heartbeat is normal, determine that the state of described rear end network element is sub-health state.

17. 1 kinds of disaster tolerance switched systems, is characterized in that, comprising: the front end network element as described in claim 9 to 14 any one, the rear end network element as described in claim 15 to 16 any one, and at least one disaster tolerance network element.