CN101997752A - Control net element and routing control method thereof - Google Patents
Control net element and routing control method thereof Download PDFInfo
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- CN101997752A CN101997752A CN2009100906068A CN200910090606A CN101997752A CN 101997752 A CN101997752 A CN 101997752A CN 2009100906068 A CN2009100906068 A CN 2009100906068A CN 200910090606 A CN200910090606 A CN 200910090606A CN 101997752 A CN101997752 A CN 101997752A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
Abstract
The invention provides a control net element and a routing control method thereof. The control net element is used for controlling and forwarding separated internet protocol IP network and comprises a routing determination module and a dispatching module, wherein the routing determination module is used for selecting final routing information on the basis of a routing protocol message reported by a forwarding net element and static routing information dispatched by a management net element; and the dispatching module is used for dispatching the final routing information to the forwarding net element for carrying out data message forwarding by the forwarding net element. The invention can reasonably realize the routing processing process so as to realize the equipped control net element in a simple and feasible way.
Description
Technical field
The present invention relates to IP (Internet Protocol, Internet Protocol) networking technology area, particularly a kind of control network element and route control method thereof.
Background technology
Along with the develop rapidly of Internet technology, IP network has obtained extensively large-scale commercial, and the scale of commercial network and number of users development just continuously and healthily.
Along with increasing new business, new function are introduced into network, the control plane of IP network becomes and becomes increasingly complex, and the extensibility of control plane, datum plane and management plane becomes the main challenge that faces in the IP network evolution process.
The defective of current IP network architecture design has greatly limited network capacity, network scalability, controllability, fail safe and QoS (Quality of Service, service quality) etc.Control plane and datum plane are integrated in same network node in current IP network, therefore when increasing business is added into network node with the control signaling, make unusual complicated being difficult to of whole network safeguard, are difficult to expand.
For tackling above network problem, industry has proposed control and has transmitted the theory of separating at present, is about to control plane and separates from datum plane, safeguards separately, alleviates pressure on the network capacity extension and the control ability with this, increases the robustness of network.
Fig. 1 is that the structural representation of the IP network of separating is transmitted in the control of technology based on iSCP (independent Scalable Control Plane independently can expand control plane).Network among Fig. 1 is the network that control plane separates with datum plane, wherein control plane is by CE (Control Element, control network element) and SCE (Service Control Element, service control network element) composition, be mainly used in control and manage the operation of all procotols; Datum plane is mainly used in the forwarding of finishing business datum by FE (Forwarding Element transmits network element) and the common composition of SFE (Service Forwarding Element, network element is transmitted in service).
Comprise a managed network element ME (Management Element) in addition, be used to manage the network entity of network elements such as CE, FE, ME monitors and collects the static information, state information of each network element etc., and according to these information and configuration order each network element is managed.
Yet there is following shortcoming at least in prior art:
Prior art has only proposed to transmit based on the control of iSCP technology the framework of the IP network of separating, but but specifically how to realize not providing implementation for control network element wherein.
Summary of the invention
The purpose of this invention is to provide a kind of control network element and route control method thereof, transmit the IP network of separating in control and realize the route control and treatment.
To achieve these goals, the embodiment of the invention provides a kind of control network element, is used to control transmit the Internet Protocol IP network of separating, and comprising:
The route determination module is used for selecting final route information based on the routing protocol packet of forwarding reported by network elements and the static routing information that managed network element issues;
Issue module, be used for described final route information is issued to described forwarding network element, be used for described forwarding network element and carry out data message forwarding.
Above-mentioned control network element, wherein, described route determination module specifically comprises:
The information gathering module is used to receive the routing protocol packet of described forwarding reported by network elements;
Routing calculation module is used for obtaining according to the pairing Routing Protocol of described routing protocol packet and described routing protocol packet the network topology of datum plane, and obtains route selection information corresponding to next jumping of various objectives address according to described network topology;
Routing selecting module is used to utilize preset strategy, selects final route information from the static routing information that described route selection information and ME issue.
Above-mentioned control network element, wherein, described preset strategy is the strategy based on priority.
Above-mentioned control network element, wherein, the route in the described final route information has minimum route cost.
Above-mentioned control network element wherein, also comprises the preservation module, is used to preserve described final route information.
To achieve these goals, the embodiment of the invention also provides a kind of route control method of controlling network element, is used to control transmit the Internet Protocol IP network of separating, and comprising:
Described control network element is selected final route information based on the routing protocol packet of transmitting reported by network elements and static routing information;
Described control network element is issued to described forwarding network element with described final route information, is used for described forwarding network element and carries out data message forwarding.
Above-mentioned route control method, wherein, described control network element selects final route information specifically to comprise based on the routing protocol packet of transmitting reported by network elements and static routing information:
Described control network element receives the routing protocol packet of described forwarding reported by network elements;
Described control network element obtains the network topology of datum plane according to pairing Routing Protocol of described routing protocol packet and described routing protocol packet;
Described control network element obtains route selection information corresponding to next jumping of various objectives address according to described network topology;
Described control network element utilizes preset strategy, selects final route information from the static routing information that described route selection information and ME issue.
Above-mentioned route control method, wherein, described preset strategy is the strategy based on priority.
Above-mentioned route control method, wherein, the route in the final route information has minimum route cost.
Above-mentioned route control method wherein, also comprises: the control network element is preserved described final route information.
The embodiment of the invention has following beneficial effect:
In the embodiment of the invention, the control network element is selected final route information based on the routing protocol packet of transmitting reported by network elements and static routing information, and after definite final route information, it is issued to described forwarding network element, be used for described forwarding network element and carry out data message forwarding, can reasonably realize the route handling process, realize the equipmentization of control network element in the mode of simple possible.
Description of drawings
Fig. 1 is a structural representation of transmitting the IP network of separating based on the control of iSCP technology;
Fig. 2 is the structural representation of the CE of the embodiment of the invention;
Fig. 3 is the schematic flow sheet of the method for the embodiment of the invention.
Embodiment
In a kind of control network element and route control method thereof of the embodiment of the invention, the control network element is determined routing table in conjunction with multidate information and static information, to realize route control.
As shown in Figure 2, the control network element of the embodiment of the invention comprises:
The route determination module, the routing protocol packet and the static routing information that are used for reporting based on FE are selected final route information;
Issue module, be used for described final route information is issued to described FE, be used for described FE and carry out data message forwarding.
And wherein, the routing iinformation determination module specifically comprises as shown in Figure 2:
The information gathering module is used to receive the routing protocol packet that FE reports;
Support one or more Routing Protocols among the FE, when it is activated, it can utilize the mechanism of corresponding Routing Protocol defined to find the neighbors (realizing as using " hello " message in the ospf protocol) that is connected with it, exchanges link-state information with routing protocol packets such as Link State Advertisement information then.
Based on above mechanism, FE can separate it when receiving routing protocol packet from data message, and the information gathering module that sends to the affiliated CE of this FE is handled.
Routing calculation module is used for obtaining according to the pairing Routing Protocol of described routing protocol packet and described routing protocol packet the network topology of datum plane, and obtains route selection information corresponding to next jumping of various objectives address according to described network topology;
Owing to comprised the information such as Link State of FE in the routing protocol packet that reports of FE, so the network topology that CE can come the calculated data plane according to the pairing Routing Protocol of routing protocol packet.
Routing selecting module is used to utilize preset strategy, selects final route information from the static routing information that described route selection information and ME issue;
Issue module, be used for described final route information is issued to described FE, be used for described FE and carry out data message forwarding.
For above-mentioned routing selecting module, it need utilize preset strategy to select final route information, this strategy can be based on the strategy of priority, has the highest priority as disposing the static routing information that ME issues, also can come the configuration preference level according to route cost, the routing iinformation of route cost minimum is as final route information.
The control network element of the embodiment of the invention also comprises:
One preserves module, is used to preserve the described final route information that described routing calculation module chooses, for the usefulness of inquiry, modification.
The route control method of the control network element of the embodiment of the invention comprises:
CE selects final route information based on routing protocol packet and static routing information that FE reports;
CE is issued to described FE with described final route information, is used for described FE and carries out data message forwarding.
As shown in Figure 3, the detailed process schematic diagram of the route control method of the control network element of the embodiment of the invention comprises:
Certainly, can also comprise after the control network element selection final route information, preserve this final route information, be convenient to operations such as inquiry, modification.
Wherein, the Routing Protocol of mentioning in said apparatus and the method can be RIB (Routing InformationProtocol, routing information protocol), OSPF (Open Shortest Path First, ospf) agreement, IGRP (Interior Gateway Routing Protocol, IGRP), BGP variety of protocols such as (Border Gateway Protocol, Border Gateway Protocols).
Be that example is described in detail as follows with the OSFP agreement below.
For the OSFP agreement, comprise hello packet and Link State Advertisement message in this routing protocol packet;
A FE sends hello packet to its adjacent FE, if receive the hello packet that a certain FE returns, then these two FE constitute neighborhood;
(for example increase and decrease FE when the FE initialization or when network configuration changes, Link State changes etc.) time, FE can produce Link State Advertisement message LSA (Link-State Advertisement), comprises all phase connected links on the router in this message, also is the state information of all of the port;
All FE can come exchanging chain line state data by a kind of method that refreshes (Flooding) that is called as.Flooding is meant that FE sends its LSA packet to FE that all are adjacent, adjacent FE upgrades the database of oneself according to its link-state information that receives, and this link-state information transferred to the router that is adjacent, until a stable process.
FE analyzes it and belongs to routing protocol packet when receiving hello packet or Link State Advertisement message, it can be reported corresponding CE.
The information gathering module of CE receives hello packet or the Link State Advertisement message that FE reports, and then set up syntople between all FE of datum plane by ospf protocol by routing calculation module, and then obtain network topology, and routing calculation module can be according to the Link State Advertisement message that receives, after upgrading network topology, obtain the network topology after the renewal, and then calculate the routing table of this FE according to described network topology by routing calculation module, comprising FE in this routing table can arrive the cost of FE and arrive the next FE (next-hop) that this FE will transmit to each, it can be to each FE, with this FE as root, calculate a shortest path tree, then, can produce the corresponding ospf routing table of this FE according to shortest path tree.
According to this ospf routing table, FE searches ospf routing table according to the destination of this data message in the process of the forwarding of carrying out data message, promptly knows to arrive the next FE that this destination will be transmitted, and then this message is forwarded to this next one FE.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a control network element is used to control and transmits the Internet Protocol IP network of separating, and it is characterized in that, comprising:
The route determination module is used for selecting final route information based on the routing protocol packet of forwarding reported by network elements and the static routing information that managed network element issues;
Issue module, be used for described final route information is issued to described forwarding network element, be used for described forwarding network element and carry out data message forwarding.
2. control network element according to claim 1 is characterized in that, described route determination module specifically comprises:
The information gathering module is used to receive the routing protocol packet of described forwarding reported by network elements;
Routing calculation module is used for obtaining according to the pairing Routing Protocol of described routing protocol packet and described routing protocol packet the network topology of datum plane, and obtains route selection information corresponding to next jumping of various objectives address according to described network topology;
Routing selecting module is used to utilize preset strategy, selects final route information from described route selection information and described static routing information.
3. control network element according to claim 1 and 2 is characterized in that, described preset strategy is the strategy based on priority.
4. control network element according to claim 3 is characterized in that, the route in the described final route information has minimum route cost.
5. control network element according to claim 1 and 2 is characterized in that, also comprises:
Preserve module, be used to preserve described final route information.
6. a route control method of controlling network element is used to control and transmits the Internet Protocol IP network of separating, and it is characterized in that, comprising:
Described control network element is selected final route information based on the routing protocol packet of transmitting reported by network elements and static routing information;
Described control network element is issued to described forwarding network element with described final route information, is used for described forwarding network element and carries out data message forwarding.
7. route control method according to claim 6 is characterized in that, described control network element selects final route information specifically to comprise based on the routing protocol packet of transmitting reported by network elements and static routing information:
Described control network element receives the routing protocol packet of described forwarding reported by network elements;
Described control network element obtains the network topology of datum plane according to pairing Routing Protocol of described routing protocol packet and described routing protocol packet;
Described control network element obtains route selection information corresponding to next jumping of various objectives address according to described network topology;
Described control network element utilizes preset strategy, selects final route information from the static routing information that described route selection information and managed network element issue.
8. according to claim 6 or 7 described route control methods, it is characterized in that described preset strategy is the strategy based on priority.
9. route control method according to claim 8 is characterized in that, the route in the described final route information has minimum route cost.
10. according to claim 6 or 7 described route control methods, it is characterized in that, also comprise:
Described control network element is preserved described final route information.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910090606.8A CN101997752B (en) | 2009-08-31 | 2009-08-31 | Control net element and routing control method thereof |
| PCT/CN2010/072636 WO2011022991A1 (en) | 2009-08-31 | 2010-05-11 | Control network element and routing control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910090606.8A CN101997752B (en) | 2009-08-31 | 2009-08-31 | Control net element and routing control method thereof |
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| CN101997752A true CN101997752A (en) | 2011-03-30 |
| CN101997752B CN101997752B (en) | 2015-06-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111884827A (en) * | 2016-08-26 | 2020-11-03 | 华为技术有限公司 | Method for synchronizing topological information in SFC network and routing network element |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102137015B (en) * | 2011-03-11 | 2015-04-08 | 华为技术有限公司 | Routing information acquiring method and network equipment |
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| CN1819556A (en) * | 2006-03-23 | 2006-08-16 | 武汉理工大学 | Multi-routing broadcasting method with dynamic delay constraining based on minimal generating tree and greedy algorithm |
| CN1946051A (en) * | 2005-10-09 | 2007-04-11 | 华为技术有限公司 | Method for selecting repeat path in repeat control separating system |
| CN1988498A (en) * | 2005-12-25 | 2007-06-27 | 华为技术有限公司 | Route repeating method in repeating control separation system |
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| CN1946051A (en) * | 2005-10-09 | 2007-04-11 | 华为技术有限公司 | Method for selecting repeat path in repeat control separating system |
| CN1988498A (en) * | 2005-12-25 | 2007-06-27 | 华为技术有限公司 | Route repeating method in repeating control separation system |
| CN1819556A (en) * | 2006-03-23 | 2006-08-16 | 武汉理工大学 | Multi-routing broadcasting method with dynamic delay constraining based on minimal generating tree and greedy algorithm |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111884827A (en) * | 2016-08-26 | 2020-11-03 | 华为技术有限公司 | Method for synchronizing topological information in SFC network and routing network element |
| CN111884827B (en) * | 2016-08-26 | 2021-10-15 | 华为技术有限公司 | Method for synchronizing topological information in SFC network and routing network element |
| US11477109B2 (en) | 2016-08-26 | 2022-10-18 | Huawei Technologies Co., Ltd. | Method for synchronizing topology information in SFC network, and routing network element |
| US11627067B2 (en) | 2016-08-26 | 2023-04-11 | Huawei Technologies Co., Ltd. | Method for synchronizing topology information in SFC network, and routing network element |
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| WO2011022991A1 (en) | 2011-03-03 |
| CN101997752B (en) | 2015-06-03 |
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