WO2017032024A1

WO2017032024A1 - Method and device for processing potn virtual interface

Info

Publication number: WO2017032024A1
Application number: PCT/CN2016/080534
Authority: WO
Inventors: 初晓峰
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-08-26
Filing date: 2016-04-28
Publication date: 2017-03-02
Also published as: CN106487548A; CN106487548B

Abstract

A method for processing a POTN virtual interface, comprising: selecting an optical fiber link by means of capacity expansion and determining a new link connection relationship; generating connection interface groups inside a port by backtracking according to the new link connection relationship; determining an application scenario of each of the connection interface groups; generating an old POTN virtual port group by searching a tunnel cross-segment relationship prior to the capacity expansion according to the application scenario; and determining a new POTN virtual port paired group according to the old POTN virtual port group. The method overcomes the complicated cross-segment pairing relationship of an NNI service based on a POTN virtual port in the case of POTN capacity expansion, and can automatically calculate the POTN virtual port pairing relationship.

Description

Method and device for processing POTN virtual interface

Technical field

The present invention relates to, but is not limited to, the field of network management systems in the field of communications, and in particular, to a method and apparatus for processing a virtual interface of a Packet Optical Transport Network (POTN).

Background technique

With the rapid development of 4G services, in order to meet the challenges of mobile broadband services and fixed integrated broadband services, packet transport networks and OTN (Optical Transport Network) have been deployed in trunk and metropolitan area planning, packet transport networks and The OTN convergence solution POTN (Packet Optical Transport Network) has also begun to be applied on a large scale in engineering, and the corresponding network expansion requirements have followed. However, the expansion scenario of the PO (PTN and OTN) hybrid networking presents a new requirement for the traditional fiber-optic link expansion.

The expansion of the traditional PTN (Packet Transport Network) is based on the expansion of the link. The tunnel segment between the service layer tunnel nodes of the NNI (Network Node Interface) side tunnel is based on the fiber link. . In the PO hybrid network, in order to meet the requirements of L2VPN (Virtual Private Network) and L3VPN (Layer 3 Virtual Private Network) services, PO hybrid devices can be deployed at the access layer, aggregation layer, and core. The layer, that is to say the service layer span of the tunnel, may be based on a multi-segment link or a link. For the link-based expansion mode, the POTN virtual interface serves as the service layer of the tunnel. The association between the POTN virtual interface and the link is achieved by binding the oduk (optical path data unit k) resource. The tunnel span composed of a POTN virtual interface can be based on multi-segment physics. link. For the expansion of the traditional PTN service, the recalculation of the service on the NNI side is based on the three-layer communication relationship between the tunnel segments of a link to calculate the three-layer communication relationship between the new two-segment tunnel spans generated after the expansion. The POTN scenario expansion is based on the POTN virtual interface spanning multiple segments, which creates three new scenarios:

a. Symmetric P service (PTN service): 1/4 ports are configured with POTN virtual ports.

b. Asymmetric P service: only one end has a POTN virtual port and the other end uses an ODU. (Optical channel Data Unit, optical channel data unit) is punched through. As shown in Figure 1, cc in Figure 1 indicates cross connection, oms indicates optical multiplex section (Optical Multiplex Section) port, and soms is PTN and OTN services. A port is a hybrid board that is used to upload services. The OAC indicates an optical access control (Optical Access Control) port.

c. Pure O service (OTN service): POTN virtual ports are not configured on both ends, only pure O services.

In order to adapt to the changes in the new scenario, especially the support scenarios of the a, b, and c scenarios, you need to manually plan the tunnel cross-segment relationship after the POTN network is expanded. This affects the accuracy of the expansion operation. , complexity, security.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

The embodiment of the invention provides a method and a device for processing a POTN virtual interface, which can automatically determine a POTN virtual interface pairing relationship.

An embodiment of the present invention provides a method for processing a virtual interface of a packet optical transport network (POTN), including:

Confirm the new link connection relationship by selecting the fiber link through capacity expansion;

Generating a port internal connection interface group according to the new link connection relationship;

Confirming application scenarios of each group of the connected interface groups;

And generating an old POTN virtual port group according to the application scenario to query the cross-section relationship of the tunnel before the expansion;

A new POTN virtual port pairing group is determined according to the old POTN virtual port group.

Optionally, the foregoing method has the following features: the application scenario of the group of the connection interface group is confirmed, including:

For each group of the connection interface group, obtain the POTN virtual port corresponding to port 1 and port 4. If both port 1 and port 4 are configured with a POTN virtual port, the application scenario of the connection interface group is confirmed to be a symmetric packet transport network service. Scenario; if there is only one port configuration in port 1 and port 4 If there is a POTN virtual port, the application scenario of the connection interface group is an asymmetric packet transmission network service scenario. If the POTN virtual port is not configured on the port 1 and the port 4, the application scenario of the connection interface group is pure light. Transport network business scenario.

Optionally, the foregoing method further has the following feature: the generating the old POTN virtual port group by querying the cross-segment relationship of the pre-expansion tunnel according to the application scenario, including:

For the symmetric packet transport network service scenario, query the tunnel span data, and form a correct POTN virtual interface group according to the tunnel span;

For the asymmetric packet transport network service scenario, query the tunnel span data according to the non-empty POTN virtual port, obtain the peer POTN virtual port of the POTN virtual port, and replace the empty other port with The peer POTN virtual port forms an old POTN virtual port group.

A POTN virtual port group is not generated for a pure optical transport network service scenario.

Optionally, the foregoing method further has the following feature: after the confirming the new link connection relationship, the method further includes: deleting the old link relationship in the database; and saving the new link connection relationship.

An embodiment of the present invention further provides an apparatus for processing a POTN virtual interface, including:

The first confirmation module is configured to: select a fiber link through capacity expansion, and confirm a new link connection relationship;

The first generation module is configured to: generate a port internal connection interface group according to the new link connection relationship;

a second confirmation module, configured to: confirm an application scenario of each group of the connection interface group;

The second generation module is configured to: query the cross-segment relationship of the tunnel before the expansion according to the application scenario, and generate an old POTN virtual port group;

The determining module is configured to: determine a new POTN virtual port pairing group according to the old POTN virtual port group.

Optionally, the second confirmation module is configured to: obtain, for each set of the connection interface group, a POTN virtual port corresponding to port 1 and port 4, and if both port 1 and port 4 are configured with a POTN virtual port, confirm The application scenario of the connection interface group is a symmetric packet transmission network service scenario. If only one port of the port 1 and port 4 is configured with a POTN virtual port, the application scenario of the connection interface group is an asymmetric packet transmission network service scenario. If the POTN virtual port is not configured on the port 1 and port 4, the application scenario of the connected interface group is the pure optical transport network service scenario.

Optionally, the second generating module is configured to:

Optionally, the first confirmation module is further configured to: delete an old link relationship in the database, and save the new link connection relationship.

The embodiment of the invention further provides a computer readable storage medium storing computer executable instructions, the method for processing the POTN virtual interface is implemented when the computer executable instructions are executed.

In summary, the embodiment of the present invention provides a method and a device for processing a POTN virtual interface, which overcomes the complex spanning pairing relationship of the NNI service based on the POTN virtual interface in the POTN expansion, and can automatically calculate the POTN virtual interface pairing relationship.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

FIG. 1 is a schematic diagram of an application scenario of an asymmetric P service;

2 is a flowchart of a method for processing a POTN virtual interface according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of an apparatus for processing a POTN virtual interface according to an embodiment of the present invention.

Embodiments of the invention

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.

FIG. 2 is a flowchart of a method for processing a POTN virtual interface according to an embodiment of the present invention. As shown in FIG. 2, the method includes the following steps:

Step 101: Select a fiber link through capacity expansion to confirm a new link connection relationship;

Selecting the fiber link by expanding, for example, selecting the link between the A and B network elements (the PORT1 of the A network element and the PORT4 of the B network element respectively), and the associated physical ports PORT2 and PORT3 that are extended to the intermediate network element C, The calculation generates a new link connection relationship, that is, PORT1 and PORT2 are interconnected, and PORT3 and PORT4 are interconnected.

Delete the old link relationship between PORT1 and PORT4 in the database. The database stores the new link connection relationship PORT1 and PORT2, PORT3 and PORT4, and the new link connection relationship constitutes a data structure PortSelect-T, which stores PORT1, PORT2, PORT3, PORT4 respectively. .

Step 102: Backtracking a port internal connection interface group according to a new link connection relationship;

According to the interconnection between PORT1 and PORT2, PORT3 and PORT4 are interconnected, and the OTN port internal connection interface group is generated, and each group port includes corresponding port 1, port 2, port 3, and port 4.

According to the data of PortSelect-T, query the expansion of the OTN port to be traced back. The ports of the expanded fiber may be different ports of different boards. For the purpose of unification, OTS (Optical Transmission Section) and OMS (Optical Multiplex Section) are used. Optical multiplex section) (OTS and OMS are both OTN optical amplifiers for amplifying signal transmission) Ports are uniformly converted to SOMS (SOMS is a hybrid board for PTN and OTN service ports for uploading services) ports, PORT1, PORT2 The PO hybrid port group corresponding to PORT3 and PORT4 is saved in the PortSelectList-T structure. If the queried data is empty, the expansion is expanded, prompting the user not to support the expansion of the non-PO hybrid port, and determining whether each port supports PO mixing. If it is not supported, the user is not prompted to expand the capacity of the non-PO hybrid port. The service cannot be configured and the calculation is exited.

Step 103: Confirm an application scenario of each group of the connection interface group, that is, distinguish a, b, and c scenarios;

Continue to subdivide the three scenarios a, b, and c. The judgment rule is: For each group of connected interfaces, obtain the POTN virtual port corresponding to port 1 and port 4. If both the port 1 and the port 4 are configured with the POTN virtual port, the scenario (symmetric P service) is as described above. If only one end is configured with the POTN virtual port, the b scenario (asymmetric P) described above is used. If the POTN virtual port is not configured on both ends, the scenario is c (pure O service). It should be noted that the subdivision scenarios corresponding to each group of interface groups may be different and need to be processed separately.

Step 104: Generate an old POTN virtual port group by querying the cross-section relationship of the tunnel before the expansion according to the application scenario.

The POTN virtual port group before the expansion is generated according to the well-defined application scenario includes:

For a scenario, the number of POTN virtual ports may be queried. You need to query the tunnel spanning data to form a correct POTN virtual interface. The POTN virtual port is applied to the same tunnel. POTN pairing relationship group;

In the b scenario, the ODU is used to pass through the ODU, and there is no POTN virtual interface. The client queries the tunnel spanning data according to the non-empty POTN virtual port to obtain the real peer POTN of the POTN virtual port. Virtual port, and replace the empty port '1 or port '4 with the peer POTN virtual port;

For the c scenario, there is no PTN service, and no POTN virtual port group needs to be generated.

In this embodiment, all POTN virtual port groups queried by port 1 are saved as poVirPortList1, and all POTN virtual port groups queried by port 4 are saved as poVirPortList4, and each group of PO hybrid port groups is processed in this way to form two POTN imaginary Port collection poVirPortList1, poVirPortList4.

Query all the tunnels related to the PoVirPortList1 and the poVirPortList4 in the database, and match the tunnel spans that are queried by the poVirPortList1 to the peer POTN virtual interface. If the peer POTN virtual interface is in the poVirPortList4, construct a poVirPortReplace-T structure. 1. Ports of port'2, port'3, and port'4, respectively, fill in the POTN virtual interfaces at both ends of the tunnel in the port'1 and port'4 fields.

If the peer POTN virtual interface is not in the poVirPortList4, it is the b scenario. The POTN virtual interface of the peer is also filled in the port'4 field of the poVirPortReplace-T structure. Then, the tunnel span of the poVirPortList4 is traversed, and the same method is used to find a. , poVirPortReplace-T replacement relationship of b scene. The two poVirPortReplace-T sets are combined to remove the repeated replacement relationship, which forms the pairing relationship of the POTN virtual interface before the expansion.

Step 105: Determine a new POTN virtual port pairing group according to the old POTN virtual port group before the capacity expansion.

According to the internal connection relationship generated by the PORT2 and the PORT3 in the step 102, the new POTN virtual interface is generated and matched with the pre-expansion interface group in the step 104 to generate a new POTN virtual interface pairing relationship.

a set of poVirPortReplace-T generated according to step 104, and generated by step 102 PortSelectList-T collection, which generates the pairing relationship of the expanded POTN virtual interface.

First, traverse the set of poVirPortReplace-T, obtain the ODU data under the virtual port of port'1, port'4, and trace the physical port corresponding to the virtual port of port'1, port'4 according to the ODU mapping relationship (port 1, port 4) According to the information of port 1 and port 4, the corresponding port pairing relationship PortSelect-T is found in the PortSelectList-T set, and port 2 and port 3 are found, and a new one is generated according to the ODU resource on port 2 and port 3. The two POTN virtual ports, port'2 and port'3, fill the port's and port'3 into the corresponding poVirPortReplace-T, and complete the calculation of the pairing relationship of the POTN virtual interface.

FIG. 3 is a schematic diagram of an apparatus for processing a POTN virtual interface according to an embodiment of the present invention. As shown in FIG. 3, the apparatus in this embodiment includes:

In an optional embodiment, the second confirmation module is configured to: obtain, for each set of the connection interface group, a POTN virtual port corresponding to port 1 and port 4, and if both port 1 and port 4 are configured with POTN virtual If the port is configured, the application scenario of the connection interface group is a symmetric packet transmission network service scenario. If only one port of the port 1 and port 4 is configured with a POTN virtual port, the application scenario of the connection interface group is determined to be an asymmetric group. If the POTN virtual port is not configured on the port 1 and port 4, the application scenario of the connected interface group is the pure optical transport network service scenario.

In an optional embodiment, the second generating module is configured to: query the tunnel span data for the symmetric packet transport network service scenario, and form a correct POTN virtual interface group according to the tunnel span; A symmetric packet transport network service scenario, according to a non-empty POTN virtual port, The database queries the tunnel spanning data to obtain the peer POTN virtual port of the POTN virtual port, and replaces the empty other port with the peer POTN virtual port to form the old POTN virtual port group. In the scenario, no POTN virtual port group is generated.

In an optional embodiment, the first confirmation module is further configured to: delete an old link relationship in the database, and save the new link connection relationship.

One of ordinary skill in the art will appreciate that all or a portion of the above steps may be performed by a program to instruct related hardware, such as a processor, which may be stored in a computer readable storage medium, such as a read only memory, disk or optical disk. Wait. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the above embodiment may be implemented in the form of hardware, for example, by implementing an integrated circuit to implement its corresponding function, or may be implemented in the form of a software function module, for example, executing a program stored in the memory by a processor. / instruction to achieve its corresponding function. This application is not limited to any specific combination of hardware and software.

The above is only an alternative embodiment of the present application. Of course, the present application may also have various other embodiments. Those skilled in the art can make various according to the present application without departing from the spirit and spirit of the present application. Corresponding changes and modifications are intended to be included within the scope of the appended claims.

Industrial applicability

The embodiment of the invention provides a method and a device for processing a POTN virtual interface, which overcomes the complex spanning pairing relationship of the NOT service based on the POTN virtual interface in the POTN expansion, and can automatically calculate the POTN virtual interface pairing relationship.

Claims

A method for processing a POTN virtual interface of a packet optical transport network, comprising:

Confirm the new link connection relationship by selecting the fiber link through capacity expansion;

Generating a port internal connection interface group according to the new link connection relationship;

Confirming application scenarios of each group of the connected interface groups;

And generating an old POTN virtual port group according to the application scenario to query the cross-section relationship of the tunnel before the expansion;

A new POTN virtual port pairing group is determined according to the old POTN virtual port group.
The method of claim 1, wherein the confirming an application scenario of each group of the connection interface group comprises:

For each group of the connection interface group, obtain the POTN virtual port corresponding to port 1 and port 4. If both port 1 and port 4 are configured with a POTN virtual port, the application scenario of the connection interface group is confirmed to be a symmetric packet transport network service. Scenarios: If only one port of port 1 and port 4 is configured with a POTN virtual port, the application scenario of the connected interface group is an asymmetric packet transport network service scenario; if neither port 1 nor port 4 is configured with a POTN virtual port, Then, the application scenario of the connection interface group is a pure optical transport network service scenario.
The method of claim 2, wherein the generating the old POTN virtual port group by querying the pre-expansion tunnel spanning relationship according to the application scenario comprises:

For the symmetric packet transport network service scenario, query the tunnel span data, and form a correct POTN virtual interface group according to the tunnel span;

For the asymmetric packet transport network service scenario, query the tunnel span data according to the non-empty POTN virtual port, obtain the peer POTN virtual port of the POTN virtual port, and replace the empty other port with The peer POTN virtual port forms an old POTN virtual port group.

A POTN virtual port group is not generated for a pure optical transport network service scenario.
The method of claim 1, after the confirming the new link connection relationship, the method further comprises:

Delete old link relationships in the database;

Save the new link connection relationship.
An apparatus for processing a POTN virtual interface of a packet optical transport network, comprising:

The first confirmation module is configured to: select a fiber link through capacity expansion, and confirm a new link connection relationship;

The first generation module is configured to: generate a port internal connection interface group according to the new link connection relationship;

a second confirmation module, configured to: confirm an application scenario of each group of the connection interface group;

The second generation module is configured to: query the cross-segment relationship of the tunnel before the expansion according to the application scenario, and generate an old POTN virtual port group;

The determining module is configured to: determine a new POTN virtual port pairing group according to the old POTN virtual port group.
The apparatus of claim 5, wherein the second confirmation module is configured to: obtain, for each set of the connection interface group, a POTN virtual port corresponding to port 1 and port 4, if both port 1 and port 4 are configured If there is a POTN virtual port, the application scenario of the connection interface group is confirmed to be a symmetric packet transmission network service scenario. If only one port of port 1 and port 4 is configured with a POTN virtual port, the application scenario of the connection interface group is confirmed as If the POTN virtual port is not configured on both the port 1 and the port 4, the application scenario of the connected interface group is the pure optical transport network service scenario.
The device of claim 6, wherein the second generating module is configured to: query the tunnel span data for the symmetric packet transport network service scenario, and form a correct POTN virtual interface group according to the tunnel span; The asymmetric packet transport network service scenario, according to the non-empty POTN virtual port, queries the database for the spanned data, obtains the POTN virtual port of the POTN virtual port, and replaces the empty other port with the The POTN virtual port group is formed on the peer POTN virtual port. The POTN virtual port group is not generated in the pure optical transport network service scenario.
The apparatus according to any one of claims 5 to 7, wherein the first confirmation module is further configured to delete an old link relationship in the database and save the new link connection relationship.