CN107948069B - UTN network fusion method based on IP technology - Google Patents
UTN network fusion method based on IP technology Download PDFInfo
- Publication number
- CN107948069B CN107948069B CN201711499870.8A CN201711499870A CN107948069B CN 107948069 B CN107948069 B CN 107948069B CN 201711499870 A CN201711499870 A CN 201711499870A CN 107948069 B CN107948069 B CN 107948069B
- Authority
- CN
- China
- Prior art keywords
- network
- network element
- utn
- protocol
- bgp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005516 engineering process Methods 0.000 title claims abstract description 20
- 238000007500 overflow downdraw method Methods 0.000 title claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 20
- 230000006855 networking Effects 0.000 claims description 7
- 238000004891 communication Methods 0.000 description 9
- 230000003068 static effect Effects 0.000 description 6
- 230000006870 function Effects 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- ABEXEQSGABRUHS-UHFFFAOYSA-N 16-methylheptadecyl 16-methylheptadecanoate Chemical compound CC(C)CCCCCCCCCCCCCCCOC(=O)CCCCCCCCCCCCCCC(C)C ABEXEQSGABRUHS-UHFFFAOYSA-N 0.000 description 1
- DWSYCUKCNSVBRA-UHFFFAOYSA-N 4-(5-methylsulfonyltetrazol-1-yl)phenol Chemical compound CS(=O)(=O)C1=NN=NN1C1=CC=C(C=C1)O DWSYCUKCNSVBRA-UHFFFAOYSA-N 0.000 description 1
- 241000764238 Isis Species 0.000 description 1
- 101710167643 Serine/threonine protein phosphatase PstP Proteins 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005417 image-selected in vivo spectroscopy Methods 0.000 description 1
- 238000012739 integrated shape imaging system Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- H04L45/68—Pseudowire emulation, e.g. IETF WG PWE3
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention relates to a UTN network fusion method based on IP technology, which comprises a plurality of network elements and a UTN network; the network element belongs to a UTN network; the method comprises the following steps: s1: any network element adopts a BGP-LU protocol; 2: all network elements in the UTN network issue labels of equipment identifications (usually, loopback addresses) to be routed into the network through a BGP-LU protocol; s3: any network element in the UTN network acquires label routes of loopback addresses of other network elements in the network through a BG-LU protocol; s4: after any network element A and any network element B in the UTN release the loopback label route through the BGP-LU protocol, the network element A acquires the loopback label route of a target network element B based on a target service, after the acquisition succeeds, the network element A and the target network element B have the condition of establishing the dynamic PW, and whether the dynamic PW is established is determined according to the service requirement. The flexible intercommunication among different network element devices can be realized, and the establishment of Pseudo-Wire (PW) of the network element end-to-end can be flexibly realized.
Description
Technical Field
The invention relates to the field of communication networks, in particular to a UTN network fusion method based on an IP technology.
Background
The UTN network (i.e. local integrated bearer transport network) technology is based on an IP/MPLS technical standard system, supports multiple characteristic functions such as BFD/MPLS-TE and the like, and has universal applicability to operator networks.
At present, the UTN network gradually adopts three-layer router device networking, the core convergence layer is mainly positioned for convergence and forwarding of edge traffic, and the dual-homing, port-shaped or annular structure networking is mostly adopted. The UTN access layer is located at the edge of the network and used for providing flexible service access, and the equipment is mainly of a ring structure.
The existing UTN network generally solves the problem of network connection between domains and equipment providers: different devices are butted by using a traditional PW (Pseudo Wire) establishing method and a segment-by-segment PW splicing mode, so that the establishment of a cross-domain PW is completed; in the method, when an end-to-end networking dedicated line is established from a network element to a network element, a multi-segment PW is required to be established, and PW switching functions of adjacent nodes are required to be completed by network equipment passing through the method during establishment. The main reasons for having to adopt this method are: because there is no decoupling, protocol intercommunication and no support for other methods by part of network element network equipment among equipment suppliers.
The conventional PW establishment method adopted in the prior art has many disadvantages, for example: (1) the devices of different network elements cannot be flexibly communicated, and end-to-end PW between the network elements cannot be flexibly established; (2) protocols for flexibly exchanging label routing with each other do not exist among equipment of different network elements; (3) for the network element end-to-end PW establishment between cross-domain and cross-equipment providers, multiple segments of PWs are required to be established for exchange splicing, so that the network element end-to-end PW establishment is completed, and excessive splicing points lose the network equipment performance; (4) the method has the characteristics of multiple fault points, inflexible adjustment and no IP network.
Disclosure of Invention
The present invention aims to overcome the defects of the prior art, and provide a Pseudo-Wire (PW) capable of flexibly realizing flexible intercommunication between different network element devices and establishing network element end-to-end.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a UTN network fusion method based on IP technology comprises a plurality of network elements and a UTN network; the network element belongs to a UTN network;
the method comprises the following steps:
s1: any network element adopts a BGP-LU protocol;
s2: all network elements in the UTN network issue labels of equipment identifications (usually, loopback addresses) to be routed into the network through a BGP-LU protocol;
s3: any network element in the UTN network acquires label routes of loopback addresses of other network elements in the network through a BGP-LU protocol;
s4: after any network element A and any network element B in the UTN release the loopback label route through the BGP-LU protocol, the network element A acquires the loopback label route of a target network element B based on a target service, after the acquisition succeeds, the network element A and the target network element B have the condition of establishing the dynamic PW, and whether the dynamic PW is established is determined according to the service requirement.
The network element may be an access network element, a convergence network element, or a core network element.
The target service may be a dedicated networking service.
Specifically, the networking private line service is one of the large-client private line services, mainly provides end-to-end two-layer intercommunication for the client in the UTN network, and provides an end-to-end available line for the client, similar to the effect of the MSTP private line.
Specifically, a BGP neighbor relationship may be established between network elements supporting the BGP-LU protocol as needed.
And the loopback label route of the network element is transmitted through a BGP-LU protocol.
Specifically, the BGP-LU protocol is an existing routing protocol;
specifically, in the scheme, the address of the label route of the network element is used, and in the network of the IPV4, the address usually refers to an IPV4loopback management address of the network element device; in the IPV6 network, the management address of IPV4loopback or IPV6loopback of the network element device can be used. (Loopback address is used herein to identify a network element)
Preferably, the network element transmits a loopback label route through a BGP-LU protocol, and Seamless splicing from the network element to a network element PW is completed by using a Seamless MPLS technology, so that the problem of splicing the intermediate network elements section by section is solved, and the performance loss of equipment is reduced.
Specifically, the Seamless MPLS technology is a Seamless MPLS technology; seamless MPLS is a network architecture formed with existing protocols, such as BGP, LDP, and ISIS. The network architecture realizes the unification of the whole network bearing technology by the end-to-end MPLS switching. The seamless MPLS architecture expands the MPLS domain to the access network, and combines the metropolitan area network, the backbone network and the access network into one MPLS domain, and the whole network bears various services based on the uniform IP/MPLS technology.
Preferably, the related configuration of MPLS, MPLS LDP, MPLS RSVP-TE channels between network elements is completed, i.e. the PW underlying tunnel is deployed normally.
The invention has the beneficial effects that:
the invention uses the same protocol-BGP-LU protocol on the network element in the UTN network; the network elements can use the same language to exchange information, and can realize cross-region (such as city, province, etc.) and cross-equipment provider (such as Huashi communication, Zhongxing communication, beacon communication, etc.); in a traditional network, because network element equipment does not have decoupling, protocol intercommunication and the like among different regions and different equipment suppliers, cross-region and cross-equipment supplier communication can be realized only through a role (translator) of a boundary; the scheme of the invention can solve the problem and realize the communication of cross-domain and cross-equipment suppliers, and the dynamic PW can be directly established between the network elements without interpreters between the network element devices as long as all the network elements are in the same network and use the BGP-LU protocol, thereby carrying out information interaction.
The method has the following specific beneficial effects: (1) the invention completes the intercommunication of the related network element equipment by using the Seamless MPLS technology, the BGP-LU protocol and the end-to-end PW building method; (2) the invention realizes cross-domain cross-equipment suppliers, label routing intercommunication between network elements and PW establishment by using the combination of the Seamless MPLS technology, the BGP-LU protocol and the end-to-end PW establishment method.
Drawings
FIG. 1 is a flow chart of the steps described in example 1 of the present invention;
FIG. 2 is a block diagram of a system according to embodiment 1 of the present invention;
FIG. 3 is a flow chart of the steps described in example 2 of the present invention;
fig. 4 is a block diagram of a system according to embodiment 2 of the present invention.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
Example 1
A UTN network fusion method based on IP technology comprises a plurality of network elements and a UTN network; the network elements adopt BGP-LU protocol for routing transmission;
as shown in fig. 2, a platform for establishing a direct communication between CSG and CSG of a manufacturer a and C as a target service requirement by using the method provided by the present invention is applied to a UTN network, and the platform includes the UTN network, a manufacturer a (i.e., an equipment provider) whose home location is X market, and a manufacturer B and a manufacturer C in Y market.
The manufacturer A, the manufacturer B and the manufacturer C all comprise CSG network elements (CSG: Cell Site Gateway, base station side Gateway);
specifically, the CSG network element (CSG: Cell Site Gateway, base station side Gateway) adopts BGP-LU protocol, and although the CSG network element belongs to different manufacturers, the CSG network element is still a network element in the UTN network, and routing can be performed between the network elements.
As shown in fig. 1, the specific steps of constructing the platform are as follows:
s1': in the UTN, CSG network elements of A manufacturer, B manufacturer and C manufacturer use BGP-LU protocol;
s2': in the UTN, the CSG network element of the manufacturer A and the CSG network element of the manufacturer C issue BGP labels of their own loopbacks to be routed to the network;
s3': in the UTN, the CSG network element of the manufacturer A and the CSG network element of the manufacturer C acquire BGP label routes of mutual loopbacks through a BGP-LU protocol;
s4': in the UTN network, the CSG network element of the manufacturer A and the CSG network element of the manufacturer C can directly establish a dynamic PW for information exchange;
in order to perfect the internal structure of the platform and enhance the safety, the specific steps of constructing the platform further comprise:
s5': the CSG network element of the manufacturer A and the CPE are connected by establishing a static pseudo wire, and the CSG network element of the manufacturer C and the CPE are connected by establishing a static pseudo wire.
And establishing a two-layer VPN between the CPE (Customer Premise Equipment) and the CSG network element by using the static PW.
The platform applies the method provided by the invention, thereby realizing that in the UTN network, even if the network elements are different in attribution and manufacturer, label routes can be obtained by using BGP-LU protocol, thereby realizing that dynamic PW is directly established between any network element and the network element; in the existing scheme, a plurality of segments of PW are built segment by using a medium, so that the direct information communication between the network element and the network element can be realized;
example 2
As shown in fig. 4, a platform for establishing a direct communication between ASG and ASG of a manufacturer a and a manufacturer C with a target service requirement by using the method provided by the present invention is applied to a UTN network, and the platform includes the UTN network, the manufacturer a (i.e., equipment provider) belonging to a country, and the manufacturer B and the manufacturer C in the city Y.
The manufacturer A, the manufacturer B and the manufacturer C all comprise ASG network elements (ASG: Aggregation Site Gateway) and CSG network elements (CSG: Cell Site Gateway).
Specifically, the ASG network element (ASG: Aggregation Site Gateway) uses BGP-LU protocol, and although the ASG network element belongs to different manufacturers, the ASG network element is still a network element in the UTN network, and label routing may be performed between the network elements.
The CSG network element does not adopt a BGP protocol.
As shown in fig. 3, the specific steps of constructing the platform are as follows:
s1': in the UTN, the ASG network element of the manufacturer A, the ASG network element of the manufacturer B and the ASG network element of the manufacturer C all use BGP-LU protocols;
s2': in the UTN network, the ASG network element of the manufacturer A and the ASG network element of the manufacturer C issue own loopback labels to be routed to the network;
s3': in the UTN, the ASG network element of the manufacturer A and the ASG network element of the manufacturer C acquire mutual loopback label routes through a BGP neighbor relation;
s4': in the UTN network, the ASG network element of the manufacturer A and the ASG network element of the manufacturer C can directly establish dynamic PW for information exchange.
In order to perfect the integrity of the platform and enhance the security, the specific steps of building the platform further comprise:
s5': establishing a dynamic PW between the ASG network element of the manufacturer A and the CSG in the manufacturer, and establishing a dynamic PW between the ASG network element of the manufacturer C and the CSG in the manufacturer;
s6': the CSG network element CPE of the manufacturer A establishes static pseudo-wire connection, and the CSG network element of the manufacturer C establishes static pseudo-wire connection with the CPE.
And establishing a two-layer VPN between the CPE and the CSG network element by using a static PW.
When an end-to-end networking special line is established from CPE to CPE in the platform, 5 segments of PW are required to be established, and the PW exchange functions of adjacent nodes are respectively completed by the ASG and the CSG. From the manufacturer a to the manufacturer C, since the ASG network element supports the BGP-LU protocol, only a section of dynamic PW from the ASG of the manufacturer a to the ASG of the manufacturer C needs to be established, as shown in fig. 4.
The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the scope of the present application shall be determined by the claims and the disclosure and teaching of the above description, and the embodiments can be further modified and modified by those skilled in the art. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (5)
1. A UTN network fusion method based on IP technology is characterized in that: the UTN network comprises a plurality of network elements and a UTN network; the network element belongs to a UTN network;
the method comprises the following steps:
s1: any network element adopts a BGP-LU protocol;
s2: all network elements in the UTN network issue label routes of the loopback addresses to the network through a BGP-LU protocol;
s3: any network element in the UTN network acquires label routes of loopback addresses of other network elements in the network through a BGP-LU protocol;
s4: after any network element A and any network element B in the UTN release the loopback label route through the BGP-LU protocol, the network element A acquires the loopback label route of a target network element B based on a target service, after the acquisition succeeds, the network element A and the target network element B have the condition of establishing the dynamic PW, and whether the dynamic PW is established is determined according to the service requirement.
2. The UTN network convergence method based on the IP technology as claimed in claim 1, wherein: the network element is an access network element, a convergence network element or a core network element.
3. The UTN network convergence method based on the IP technology as claimed in claim 1, wherein: and the loopback label route of the network element is transmitted through a BGP-LU protocol.
4. The UTN network convergence method based on the IP technology as claimed in claim 1, wherein: and the network element completes Seamless splicing from the network element to the network element PW by using a Seamless MPLS technology.
5. The UTN network convergence method based on the IP technology as claimed in claim 1, wherein: the target service is a networking private line service.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711499870.8A CN107948069B (en) | 2017-12-29 | 2017-12-29 | UTN network fusion method based on IP technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711499870.8A CN107948069B (en) | 2017-12-29 | 2017-12-29 | UTN network fusion method based on IP technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107948069A CN107948069A (en) | 2018-04-20 |
| CN107948069B true CN107948069B (en) | 2020-05-08 |
Family
ID=61937266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711499870.8A Active CN107948069B (en) | 2017-12-29 | 2017-12-29 | UTN network fusion method based on IP technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107948069B (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10225189B2 (en) * | 2016-04-26 | 2019-03-05 | Juniper Networks, Inc. | Egress peer engineering using IPv4-mapped IPv6 addresses |
| US10958559B2 (en) * | 2016-06-15 | 2021-03-23 | Juniper Networks, Inc. | Scaled inter-domain metrics for link state protocols |
-
2017
- 2017-12-29 CN CN201711499870.8A patent/CN107948069B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107948069A (en) | 2018-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10148456B2 (en) | Connecting multiple customer sites over a wide area network using an overlay network | |
| CN105245452B (en) | Multi-protocol label switching traffic engineering tunnel establishing method and equipment | |
| US9197583B2 (en) | Signaling of attachment circuit status and automatic discovery of inter-chassis communication peers | |
| US7733876B2 (en) | Inter-autonomous-system virtual private network with autodiscovery and connection signaling | |
| US8155000B2 (en) | Technique for enabling traffic engineering on CE-CE paths across a provider network | |
| EP2720415B1 (en) | Routing control method, apparatus and system of layer 3 virtual private network | |
| US20160119229A1 (en) | Method for Establishing Tunnel, Method for Allocating Label, Device and Network System | |
| US20170317929A1 (en) | Sr information obtainment method and sr network establishment method | |
| US20120287818A1 (en) | Multipoint-to-multipoint service for a communications network | |
| CN108574616A (en) | A kind of method, equipment and the system of processing routing | |
| WO2006067623A2 (en) | Virtual private networking methods for autonomous systems | |
| CN104767680B (en) | It route the method and apparatus being switched fast | |
| CN109672619A (en) | A kind of method, equipment and system handling message | |
| CN103078800B (en) | Mac address information control method in EVI network and edge device | |
| CN102281533B (en) | Method, system and router for establishing LSP based on RT | |
| CN108601055B (en) | Method and system for deploying L3 VPN in L TE mobile backhaul network | |
| CN104009919A (en) | Message forwarding method and device | |
| CN107948069B (en) | UTN network fusion method based on IP technology | |
| CN106878137A (en) | A kind of route learning method and device | |
| CN102710519A (en) | Method, system and device for establishing and removing cross-domain LSP (Label Switching Path) | |
| CN103095507B (en) | Based on message transmitting method and the edge device of Ethernet virtualization internet network | |
| CN104022954A (en) | Message forwarding method and device | |
| CN102340449B (en) | Private network message transmission method, equipment and system | |
| Joseph et al. | Network convergence: Ethernet applications and next generation packet transport architectures | |
| CN107911262A (en) | A kind of cross-domain method that detection of connectivity is carried out using LSP Ping/Traceroute |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |