CN100344105C - Smooth restart method of carrier control level - Google Patents
Smooth restart method of carrier control level Download PDFInfo
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- CN100344105C CN100344105C CNB031571425A CN03157142A CN100344105C CN 100344105 C CN100344105 C CN 100344105C CN B031571425 A CNB031571425 A CN B031571425A CN 03157142 A CN03157142 A CN 03157142A CN 100344105 C CN100344105 C CN 100344105C
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Abstract
The present invention discloses a smooth restart method of a bearing control level. The method comprises that: a restarted bearing net resource manager sends resource synchronous requests to a network device directly connected with the resource manager; if a network device can not recognize received resource synchronous requests, synchronous request response will be sent to the current restarted bearing net resource manager, and the synchronous processing will be finished; if a network device can recognize received resource synchronous requests, all connection information relevant to the current restarted bearing net resource manager in the network device will be sent to the current restarted bearing net resource manager; the current restarted bearing net resource manager stores the received connection information. Because of the scheme of the present invention, the restarted bearing net resource manager can obtain loss connection information from an adjacent device; therefore, the work before restart can be continued after the restarted bearing net resource manager is restarted; consequently, the robustness of the bearing control level is improved, and the running stability of networks is strengthened.
Description
Technical field
The present invention relates to the equipment reboot technology, relate to the smooth restarting method of bearer control layer or rather.
Background technology
Continuous increase along with the Internet network size, various network services are fallen over each other to emerge in large numbers, various advanced persons' multimedia system emerges in an endless stream, the multimedia services such as HTTP(Hypertext Transport Protocol) that this causes Internet network needs often to send sudden high file transfer protocol (FTP) (FTP) or contain image file.For the real time business in the network, because characteristics such as its propagation delay time to network, delay jitter are comparatively responsive, so network is bigger to the influence of real time business when transmission FTP or HTTP etc. are professional.And multimedia service a large amount of network bandwidth that also accounted for makes the key business that needs in the existing network to guarantee bandwidth be difficult to be transmitted reliably.
At the problems referred to above, industry has proposed various service quality (QoS) technology, such as, internet engineering task group (IETF) has just been set up a lot of service model and machine-processed to satisfy the demand of network.In these QoS technology, industry is relatively approved is that access and the edge at network that IETF proposes uses integrated service model (Int-Serv), uses the technical scheme of differentiated service model (Diff-Serv) at server.Because the Diff-Serv in this scheme has only set preferential registration and ensured QoS, though therefore use the network of this scheme to have the high characteristics of line efficiency, the transmission reliability of whole network and laser propagation effect are difficult to guarantee.For addressing this problem, industry has proposed promptly to have proposed to have the Diff-Serv model of independent bearing control layer for Diff-Serv introduces an independently scheme of bearer control layer on the basis of original Diff-Serv.This solution is between the service control layer of Diff-Serv and bearer network layer bearer control layer to be set, set bearer control layer is made up of a plurality of load network resource manager, load network resource manager can be bandwidth broker device (BB, Bandwidth Broker), it also can be the QoS server, load network resource manager (CM) or other network equipments, the corresponding load network resource manager of each bearer network among the Diff-Serv, dispose the rule and the network topology of this bearer network by load network resource manager, and be the traffic assignments bandwidth resources of user applies, transmit the request and the result of user applies service bandwidth between each load network resource manager by signaling, and load network resource manager is the routing information of user's business application distribution.
Below in conjunction with accompanying drawing the Diff-Serv model that this has independent bearing control layer is described.
Subregion in each load network resource manager management bearer network in the Diff-Serv model, this zone is its management domain.In Diff-Serv model shown in Figure 1, management domain 101 corresponding load network resource manager 102, load network resource manager 102 is connected with edge router (ER) 103 in the management domain 101, carries out processing such as Internet resources and Topology Management by 102 pairs of management domains of load network resource manager 101; Similarly, management domain 112 corresponding load network resource manager 111, load network resource manager 111 is connected with router one 13 in the management domain 112; Management domain 109 corresponding load network resource manager 108, load network resource manager 108 is connected with ER 110 in the management domain 109.Load network resource manager 102 is connected by load network resource manager 111 with load network resource manager 108.User (UE) 104 is connected with Call Agent (CA) 105, this CA 105 is connected with load network resource manager 102, the request of being sent by user UE104 enters this bearer network through the management domain 101 of load network resource manager 102 correspondences, therefore, if UE 104 is the calling subscriber, then load network resource manager 102 is the source load network resource manager of UE 104; UE 106 is connected with CA107, this CA 107 is connected with load network resource manager 108, the request of being sent by user UE 106 enters this bearer network through the management domain 109 of load network resource manager 108 correspondences, therefore, if UE 106 is the calling subscriber, then load network resource manager 108 is the source load network resource manager of UE 106.
Bearer control layer can be user, CA or network maintenance staff's service request Resources allocation.If with the UE among Fig. 1 104 is calling UE, UE 106 is a called UE, and then load network resource manager 102 is the source load network resource manager of UE 104, and load network resource manager 108 is the purpose load network resource manager.
If the load network resource manager in the bearer control layer is CM, then bearer control layer for the service request Resources allocation by the realization that between source CM and purpose CM, connects.When connecting, source CM hop-by-hop CM downstream sends resource request, until purpose CM; Purpose CM returns resource response again, until source CM.After bearer control layer had been set up connection, source CM was with call information, the qos parameter of this calling, and the inlet ER that the routing information of determining in the process sends to this service request is set up in this connection.Set up in the process above-mentioned, each CM distribute in this management domain for this time service request and its with the corresponding management domain of downstream CM between the territory between the path, and be this time service request bandwidth reserved information.
Above-mentioned source CM can directly be determined by CA, also can in bearer control layer, determine by agent way, if the latter, then this source CM also should return the proxy resources response with the path that sends the proxy resources request, until with the direct-connected CM of CA, after this CM receives the proxy resources response, return the connection resource response to CA.
No matter which kind of equipment is the load network resource manager in the bearer control layer specifically be, after having set up current connection, load network resource manager all needs according to the link information of self preserving maintenance and management to be carried out in the connection of having set up.Such as, load network resource manager the state of current connection is safeguarded, or revised the bandwidth information that has been provided with etc.
Therefore, in the above-mentioned process that connects, each load network resource manager all needs to preserve in this connection procedure the information with join dependency.If the unexpected power down of certain load network resource manager or other faults occur, then its link information of preserving can hinder for some reason and all lose, and the present method of after load network resource manager is recovered, not obtaining the link information of self preserving again, like this, even it is normal that this load network resource manager is recovered again, also can't continue to set up current connection, and the connection of can't maintenance and management having set up, to new resource request owing to lose the existing resource operating position, so accurate Resources allocation, this will inevitably influence the stability of the load network resource manager and the network operation.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of load network resource manager to obtain the method for current network information after restarting, make this load network resource manager after restarting, can recover original information as possible, and can handle new resource request better.
For reaching above purpose, technical scheme of the present invention is achieved in that a kind of smooth restarting method of bearer control layer, and this method may further comprise the steps:
The load network resource manager of a. restarting sends the source synchronous request to the network equipment direct-connected with it;
B. after the network equipment is received the source synchronous request, judge whether self can discern this source synchronous request, if can discern, then send all and the relevant link information of current load network resource manager of restarting in the present networks equipment to current load network resource manager of restarting, and enter step c, otherwise, send refusal response synchronously to current load network resource manager of restarting, and finish Synchronous Processing;
C. current load network resource manager of restarting is preserved the link information that sends among the step b.
Among the described step a, the load network resource manager of restarting is provided for identifying the request mark of client type in the source synchronous request that sends;
Among the then described step b, the network equipment is judged the request mark in self whether can the recognition resource synchronization request.
The described network equipment of step b may further include after sending all link informations, returns to current load network resource manager of restarting and finishes response synchronously.
Among the described step b, whether the described network equipment is provided for identifying this message in the link information that sends be the sign position of the last item link information message.
This method can further include: the described network equipment judges whether the link information that sends is the last item link information message, if, then the sign position in this resend message is set to particular value, otherwise the sign position in this resend message is set to the value different with this particular value.
Described is the interior edge router of the corresponding management domain of current load network resource manager of restarting with the direct-connected network equipment of the load network resource manager of restarting, and then described transmission link information is: send call information, qos parameter and the routing information of having set up that is connected.
Described and the direct-connected equipment of load network resource manager that restart are load network resource manager, and then described transmission link information is: send resource request or proxy resources request or the routing information of the connection of having set up, or three's combination in any.
Described transmission link information may further include: send resource response, and/or the proxy resources response.
With the direct-connected network equipment of the load network resource manager of restarting be Call Agent, then described transmission link information is: send the connection resource request that it once sent to current load network resource manager of restarting.
Among the described step c, when described load network resource manager of restarting is preserved link information at per call, judge at first whether paid-in link information exists the link information of conflicting with the current link information of receiving, if have, then deletion is called out all corresponding link informations with this, otherwise, preserve the current link information of receiving.
This method can further include: when described load network resource manager of restarting is called out all corresponding link informations in deletion with this, to calling out the request message that the relevant network equipment sends the link information of obtaining this calling again, receive that the network equipment of this request message is retransmitted that self preserves and corresponding with this calling link information with this.
The present invention program sends the source synchronous request by the load network resource manager after restarting to other network equipments direct-connected with it, and preserve other network equipments and receive the link information of feeding back after the source synchronous request, make load network resource manager after causing restarting because of power down or other faults, can from the adjacent network equipment, obtain the link information before restarting, thereby guarantee that this load network resource manager can continue work such as connection foundation before the fault and maintenance management after restarting.And therefore,, can be new resource request Resources allocation exactly because the load network resource manager after restarting has been obtained the existing resources distribution condition.As seen, the present invention program has improved the robustness of bearer control layer, has strengthened the stability of the network operation, and the present invention program realizes simply, is easy to maintenance management.
Description of drawings
Fig. 1 is the schematic diagram of the present Diff-Serv model with independent bearing control layer;
Fig. 2 realizes the message flow sequential chart of source synchronous for the present invention program;
Fig. 3 realizes the flow chart of source synchronous for the present invention program.
Embodiment
Below in conjunction with drawings and the specific embodiments the present invention program is described in further detail.
If certain load network resource manager is restarted in power down or after breaking down, then to sending the source synchronous request that is used to obtain link information with self direct-connected network equipment, the network equipment of receiving this source synchronous request sends to this load network resource manager with the information with join dependency of self preserving, and load network resource manager is recovered the link information of self according to information that receive and join dependency.
This message flow sequential that realizes source synchronous is referring to Fig. 2, and corresponding flow process realizes by following steps referring to Fig. 3:
After step 301, load network resource manager are restarted, send the source synchronous request that is used to obtain link information, should comprise the request mark that is used to identify client type in the source synchronous request that is sent to the network equipment direct-connected with it.
If the load network resource manager of restarting only with the self-management territory in ER and some load network resource manager directly be connected, then this load network resource manager of restarting sends the source synchronous request respectively to ER direct-connected with it and load network resource manager.If the load network resource manager of restarting also is connected with CA, then it also should send the source synchronous request to CA.
With the direct-connected network equipment of current load network resource manager of restarting may be ER, load network resource manager or CA, so the link information that various network device is retransmitted is different.
Consist of example with bearer control layer by CM, the load network resource manager of then restarting is CM.For ER, call information, the qos parameter of the link information of its transmission for self preserving, and the routing information of the connection of having set up, these link informations all are that current CM of restarting once sent to this ER's.If it received the routing information that current CM of restarting issues, then also this routing information is sent to again current CM of restarting.For CM, be that all link informations relevant with current CM of restarting that self is preserved send to this current CM of restarting, this link information may be the resource request and the response of self once receiving, also may be proxy resources request and response, also may be routing information of having set up etc.For CA, the link information of its transmission was for self once sending to all connection resource requests of this CM of restarting.
After the network equipment in this step sends all link informations of self preserving, also should send all link informations in the expression present networks equipment retransmit finish finish response synchronously.For simplifying flow process, these network equipments also can not send and finish response synchronously, whether be the sign position of the last item link information message but set up one in the link information message of above-mentioned transmission if being used to identify this message, such as, if this message is the last item link information message, then the sign position in this message is set to some particular values, and if not the last item link information message, then the sign position in this message is set to the value different with last particular value.Such as, the sign position in the last item message is set to 1, and the sign position unification in other message is set to 0; Perhaps, the sign position in the last item message is set to 0, and the sign position unification in other message is set to 1; Perhaps, the sign position that the last item message only is set is certain particular value, and such as 0xFF, the sign position in other message can be provided with arbitrarily.
The load network resource manager of restarting is often obtained the link information at certain calling from the link information that a plurality of equipment send, if between the link information at same once calling that distinct device sends conflict is arranged, the load network resource manager of then restarting need delete all and relevant link informations are called out in this time.Call out corresponding link information for obtaining again with this time, the load network resource manager of restarting can also be to calling out the request message that relevant all-network equipment sends the call identification that comprises this time calling with this time, and the request network equipment is retransmitted with this time and called out corresponding link information.The network equipment of receiving this request message sends and the corresponding link information of this time calling to this load network resource manager of restarting once more.By said process, this load network resource manager of restarting can return to the state before the fault.
The above only is the present invention program's preferred embodiment, not in order to limit protection scope of the present invention.
Claims (11)
1, a kind of smooth restarting method of bearer control layer is characterized in that this method may further comprise the steps:
The load network resource manager of a. restarting sends the source synchronous request to the network equipment direct-connected with it;
B. after the network equipment is received the source synchronous request, judge whether self can discern this source synchronous request, if can discern, then send all and the relevant link information of current load network resource manager of restarting in the present networks equipment to current load network resource manager of restarting, and enter step c, otherwise, send refusal response synchronously to current load network resource manager of restarting, and finish Synchronous Processing;
C. the link information that each network equipment sends among the current load network resource manager receiving step b of restarting, and at per call link information is preserved.
2, method according to claim 1 is characterized in that among the described step a, and the load network resource manager of restarting is provided for identifying the request mark of client type in the source synchronous request that sends; Among the then described step b, the network equipment is judged the request mark in self whether can the recognition resource synchronization request.
3, method according to claim 1 is characterized in that, the described network equipment of step b further comprises: return to current load network resource manager of restarting and finish response synchronously after sending all link informations.
4, method according to claim 1 is characterized in that, among the described step b, whether the described network equipment is provided for identifying this message in the link information that sends be the sign position of the last item link information message.
5, method according to claim 4, it is characterized in that, this method further comprises: the described network equipment judges whether the link information that sends is the last item link information message, if, then the sign position in this link information message is set to particular value, otherwise the sign position in this link information message is set to the value different with this particular value.
6, method according to claim 1, it is characterized in that, described is the interior edge router of the corresponding management domain of current load network resource manager of restarting with the direct-connected network equipment of the load network resource manager of restarting, and then described transmission link information is: send call information, qos parameter and the routing information of having set up that is connected.
7, method according to claim 1, it is characterized in that, described and the direct-connected network equipment of load network resource manager that restart is a load network resource manager, then described transmission link information is: send resource request or proxy resources request or established path information, or three's combination in any.
8, method according to claim 7 is characterized in that, described transmission link information further comprises: send resource response, and/or the proxy resources response.
9, method according to claim 1, it is characterized in that, with the direct-connected network equipment of the load network resource manager of restarting be Call Agent, then described transmission link information is: send the connection resource request that it once sent to current load network resource manager of restarting.
10, method according to claim 1, it is characterized in that among the described step c, when described load network resource manager of restarting is preserved link information at per call, judge at first whether paid-in link information conflicts with the current link information of receiving, if have, then deletion is called out all corresponding link informations with this, otherwise, preserve the current link information of receiving.
11, method according to claim 10, it is characterized in that this method further comprises: when described load network resource manager of restarting is called out all corresponding link informations in deletion with this, to calling out the request message that the relevant network equipment sends the link information of obtaining this calling again, receive that the network equipment of this request message is retransmitted that self preserves and corresponding with this calling link information with this.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB031571425A CN100344105C (en) | 2003-09-16 | 2003-09-16 | Smooth restart method of carrier control level |
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| CNB031571425A CN100344105C (en) | 2003-09-16 | 2003-09-16 | Smooth restart method of carrier control level |
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| CN1599325A CN1599325A (en) | 2005-03-23 |
| CN100344105C true CN100344105C (en) | 2007-10-17 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100413254C (en) * | 2005-09-02 | 2008-08-20 | 华为技术有限公司 | Method of implementing resource state synchronous in network with independent bearing control layer |
| CN100396005C (en) | 2005-10-24 | 2008-06-18 | 华为技术有限公司 | Method for carrying out synchronization on flow between loaded control layer and loaded layer device |
| CN100558055C (en) | 2006-11-10 | 2009-11-04 | 华为技术有限公司 | Reduce the method and the router of continuous duration of error smoothness rebooting status |
| CN101459573B (en) * | 2007-12-13 | 2012-05-23 | 华为技术有限公司 | Method, router and communication network for router smoothly restarting |
| CN105429777B (en) * | 2015-10-20 | 2019-02-19 | 北京小鸟听听科技有限公司 | Working condition restoration methods and device |
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| WO2002011461A2 (en) * | 2000-07-31 | 2002-02-07 | Telefonaktiebolaget L M Ericsson (Publ) | DYNAMIC QoS MANAGEMENT IN DIFFERENTIATED SERVICES USING BANDWIDTH BROKERS, RSVP AGGREGATION AND LOAD CONTROL PROTOCOLS |
| CN1345148A (en) * | 2000-09-18 | 2002-04-17 | 阿尔卡塔尔加拿大公司 | Method and device for implementation of resynchronization of topological data base in communication network having topological state routing protocol |
| CN1360801A (en) * | 1999-04-12 | 2002-07-24 | 艾利森电话股份有限公司 | Gateway Location register fault recovery |
| US6498779B1 (en) * | 1998-05-22 | 2002-12-24 | Alcatel Canada Inc. | Multiple endpoint paths |
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2003
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6498779B1 (en) * | 1998-05-22 | 2002-12-24 | Alcatel Canada Inc. | Multiple endpoint paths |
| CN1360801A (en) * | 1999-04-12 | 2002-07-24 | 艾利森电话股份有限公司 | Gateway Location register fault recovery |
| WO2002011461A2 (en) * | 2000-07-31 | 2002-02-07 | Telefonaktiebolaget L M Ericsson (Publ) | DYNAMIC QoS MANAGEMENT IN DIFFERENTIATED SERVICES USING BANDWIDTH BROKERS, RSVP AGGREGATION AND LOAD CONTROL PROTOCOLS |
| CN1345148A (en) * | 2000-09-18 | 2002-04-17 | 阿尔卡塔尔加拿大公司 | Method and device for implementation of resynchronization of topological data base in communication network having topological state routing protocol |
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