CN106612563B - Method and device for establishing SCTP link between network nodes - Google Patents
Method and device for establishing SCTP link between network nodes Download PDFInfo
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- CN106612563B CN106612563B CN201510703736.XA CN201510703736A CN106612563B CN 106612563 B CN106612563 B CN 106612563B CN 201510703736 A CN201510703736 A CN 201510703736A CN 106612563 B CN106612563 B CN 106612563B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
- H04L67/141—Setup of application sessions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
- H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
- H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
- H04L69/326—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the transport layer [OSI layer 4]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
Abstract
The invention discloses a method and a device for establishing an SCTP link between network nodes, which are used for realizing that the mode for establishing the SCTP link can be more flexibly selected in different application scenes, and the workload and the complexity of network configuration adjustment are reduced. The invention provides a method for establishing SCTP link between network nodes, comprising the following steps: the method comprises the steps that a first node determines a mode of establishing an SCTP link with a second node; the first node initiates a SCTP link establishment process with the second node in the mode; wherein the mode is one of the following modes: the first method is as follows: the first node establishes an SCTP link with the second node according to the configuration information of the second node; the second method comprises the following steps: and the first node establishes an SCTP link with the second node according to the local configuration information.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for establishing an SCTP link between network nodes.
Background
SCTP (Stream Control Transport Protocol) is designed mainly for transmitting PSTN (Public Switched telephone network) signaling messages through an IP (Internet Protocol) network. SCTP and UDP (User data Protocol) and TCP (Transfer Control Protocol) belong to the same transport layer Protocol.
The signaling layer in TD (Time Division) technology widely applies SCTP protocol, and in consideration of reliability of link quality, SCTP-mholtome function (SCTP multi-point function) is adopted, so-called SCTP multi-point, that is, the number of IP addresses of two nodes of an SCTP link is not less than two, respectively, an Iub interface and an Iu interface in TD-SCDMA (Time Division-synchronous code Division Multiple Access) system, and an S1 signaling interface in TD-L TE (Time Division L ong Term Evolution) system are all realized based on SCTP, and the SCTP multi-point function is also basically enabled in external field application.
However, in an actual network, IP address configurations of a network element on a Client side and a network element on a Server side of the SCTP are both configured manually, and when a SCTP link is established between the network element on the Client side and the network element on the Server side, the network element on the Client side initiates an SCTP link establishment process by local configuration, where the network element on the Client side may be, for example, a NodeB (base station in 3G) in an Iub port, an eNodeB (base station in evolution) in an S1-MME interface, an RNC (Radio network controller) in an Iu port, and the like, and the network element on the corresponding Server side is an RNC in the Iub port, an MME (Mobility Management Entity) in an S1-MME interface, a GGSN (Gateway GPRS Support Node) in the Iu port, or an SGSN (Serving GPRS Support Node), and the like. When the network element on the Server side is adjusted to be multi-hop (i.e. a single IP address is adjusted to be a plurality of IP addresses), and a plurality of IP addresses are all used for establishing the SCTP link with the network element on the Client side, the network element on the Client side cannot automatically adjust the number of IP addresses thereof, and therefore, the network element on the Client side still establishes the SCTP link with the IP address established by the network element on the Server side as one-to-one by using the local IP address configuration (single IP address), so that the SCTP multi-hop cannot be effective.
For the above scenario, when the network element on the Server side is adjusted to be multi-point and the adjusted multiple IP addresses are all used for establishing the SCTP link with the network element on the Client side, the network element on the Client side still establishes the SCTP link with the local IP address configuration, and the network element on the Client side cannot automatically adapt to the number of the IP addresses, so that the SCTP multi-point cannot take effect. If the SCTP multi-point needs to be validated, the IP configuration of the network element on the Client side needs to be manually adjusted, which undoubtedly increases the workload and complexity of network configuration adjustment.
To sum up, in the external application, the IP addresses of the network element on the Client side of the SCTP and the network element on the Server side are both configured manually, and the network element on the Client side of the SCTP is configured locally as the master when the SCTP link is established. For different application scenarios, the network element at the Client side cannot flexibly adapt to the local IP address, which increases the workload and complexity of network configuration adjustment.
Disclosure of Invention
The embodiment of the invention provides a method and a device for establishing an SCTP link between network nodes, which are used for realizing that the mode for establishing the SCTP link can be selected more flexibly in different application scenes, and the workload and the complexity of network configuration adjustment are reduced.
The method for establishing the SCTP link between the network nodes provided by the embodiment of the invention comprises the following steps:
the method comprises the steps that a first node determines a mode of establishing an SCTP link with a second node;
the first node initiates a SCTP link establishment process with the second node in the mode;
wherein the mode is one of the following modes:
the first method is as follows: the first node establishes an SCTP link with the second node according to the configuration information of the second node;
the second method comprises the following steps: and the first node establishes an SCTP link with the second node according to the local configuration information.
In the embodiment of the present invention, a method for establishing an SCTP link with a second node is first determined by a first node, and then an SCTP link is established with the second node by using the determined SCTP link establishment method, where the method is one of the following methods: the first method is as follows: the first node establishes an SCTP link with the second node according to the configuration information of the second node; the second method comprises the following steps: and the first node establishes an SCTP link with the second node according to the local configuration information. Therefore, the method for establishing the SCTP link can be flexibly selected in different application scenes, and the workload and the complexity of network configuration adjustment are further reduced.
Preferably, the determining, by the first node, the SCTP link establishment method with the second node includes:
the first node reads preset information field IE information used for indicating an SCTP link establishment mode;
and the first node determines a mode of establishing the SCTP link with the second node according to the IE information.
Preferably, the first method specifically includes: and the first node establishes an SCTP link with the second node according to the IP address configuration information of the second node.
Preferably, when initiating the SCTP link establishment procedure with the second node in the first mode, the first node specifically includes:
the first node acquires each IP address information of the second node;
and the first node initiates an SCTP PATH (PATH) establishing process to any IP address of the second node aiming at the IP address.
Therefore, when the SCTP link is established between the first node and the second node, the local IP address information does not need to be manually configured, the SCTP link can be established with the second node by automatically acquiring the IP address configuration information of the second node, the workload and the complexity of network configuration adjustment are reduced, the working efficiency is improved, and the risk of errors caused by manual network configuration adjustment is reduced.
Preferably, the acquiring, by the first node, each IP address information of the second node specifically includes:
the first node receives an initialization response INIT ACK message sent by the second node, wherein the INIT ACK message carries information of each IP address of the second node;
and the first node acquires each IP address information of the second node from the INIT ACK message.
Preferably, after the first node initiates the SCTPPATH establishment procedure to any IP address of the second node for that IP address, the method further includes:
and the first node updates local IP address information, and the number of the updated local IP addresses is the same as that of the IP addresses of the second node.
Through the link establishing process, the first node can automatically update the local IP address information, the workload and the complexity of manually adjusting the local IP address configuration information are reduced, and the working efficiency is improved.
Preferably, the second mode specifically includes: and the first node establishes an SCTP link with the second node according to the local IP address in the local configuration information and the IP address configuration information of the second node.
The device for establishing the SCTP link between the network nodes provided by the embodiment of the invention comprises the following steps:
the determining unit is used for determining a mode of establishing the SCTP link with the second node;
the execution unit is used for initiating the SCTP link establishment process with the second node by adopting the mode;
wherein the mode is one of the following modes:
the first method is as follows: establishing an SCTP link with the second node according to the configuration information of the second node;
the second method comprises the following steps: and establishing an SCTP link with the second node according to the local configuration information.
Preferably, when the determining unit determines the SCTP link establishment method with the second node, the determining unit is specifically configured to:
reading preset information field IE information used for indicating an SCTP link establishment mode;
and determining a mode for establishing the SCTP link with the second node according to the IE information.
Preferably, the first method specifically includes: and establishing an SCTP link with the second node according to the IP address configuration information of the second node.
Preferably, when initiating the SCTP link establishment procedure with the second node in the first mode, the execution unit is specifically configured to:
acquiring each IP address information of the second node;
and aiming at any IP address of the second node, initiating an SCTP PATH establishment process to the IP address.
Preferably, when the execution unit acquires each IP address information of the second node, the execution unit is specifically configured to:
receiving an initialization response INIT ACK message sent by the second node, wherein the INIT ACK message carries information of each IP address of the second node;
and acquiring each IP address information of the second node from the INIT ACK message.
Preferably, after initiating the SCTPPATH establishment procedure to any IP address of the second node, the execution unit is further configured to:
and updating the local IP address information, wherein the number of the updated local IP addresses is the same as that of the IP addresses of the second node.
Preferably, the second mode specifically includes: and establishing an SCTP link with the second node according to the local IP address in the local configuration information and the IP address configuration information of the second node.
Drawings
Fig. 1 is a schematic flowchart of a method for establishing an SCTP link between network nodes according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an SCTP protocol stack according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an SCTP multi-point provided by an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a device for establishing an SCTP link between network nodes according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a method and a device for establishing an SCTP link between network nodes, which are used for realizing that the mode for establishing the SCTP link can be selected more flexibly in different application scenes, and the workload and the complexity of network configuration adjustment are reduced.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a method for establishing an SCTP link between network nodes provided in an embodiment of the present invention includes:
step S101, the first node determines a mode of establishing an SCTP link with the second node;
step S102, the first node initiates a SCTP link establishment process with the second node by adopting the mode;
wherein the mode is one of the following modes:
the first method is as follows: the first node establishes an SCTP link with the second node according to the configuration information of the second node;
the second method comprises the following steps: and the first node establishes an SCTP link with the second node according to the local configuration information.
The first node may be, for example, a network element on the client side, such as a NodeB in an Iub port, an RNC in an Iu port, an eNodeB in an S1-MME interface, an eNodeB in an X2 signaling plane interface, and the like. The second node may be, for example, a network element on the server side, such as an RNC in an Iub port when the first node is a NodeB in the Iub port; when the first node is an RNC in the Iu interface, the second node can be a GGSN or SGSN in the Iu interface; when the first node is an eNodeB in an S1-MME interface, the second node can be an MME in an S1-MME interface; when the first node is an eNodeB in the X2 signaling plane interface, the second node may be an eNodeB in the X2 signaling plane interface, and so on.
When a first node establishes an SCTP link with a second node, the way of establishing the SCTP link needs to be determined, mainly because in an actual external application, different application scenarios may exist. For example, when the number of IP addresses of the second node is configured to be multiple from a single one (i.e., IP cutover is performed), and a plurality of IP addresses of the second node are all used to establish an SCTP link with the first node, if the second method is adopted, that is, the first node establishes an SCTP link with the second node according to the local configuration information, and when the local configuration information of the first node is not manually adjusted, the number of local IP addresses is still 1, and the first node cannot automatically adjust the local IP address configuration information, therefore, the first node establishes an SCTP link whose IP addresses are one-to-one according to the local configuration information, and finally, SCTP multihops cannot be validated. Even if the local IP address configuration information of the first node is manually adjusted before the SCTP link is established, and then the SCTP link is established with the second node using the adjusted local IP address configuration information, there is a disadvantage that a workload for configuring the IP address information is increased, and particularly, when the number of configured IP addresses is large after the second node performs IP cutover, the local IP address configuration information of the first node is continuously manually adjusted, which is likely to cause a risk of an error due to manual operation.
Preferably, the determining, by the first node, the SCTP link establishment method with the second node includes:
the first node reads preset information field IE information used for indicating an SCTP link establishment mode;
and the first node determines a mode of establishing the SCTP link with the second node according to the IE information.
The preset IE information for indicating the SCTP link establishment method may be set in a local association table. For example, the name of the IE may be set as the SCTP link establishment method, an indication information is set in the IE, for example, an indication bit is set, and when the value of the bit is 0, the method indicating that the SCTP link establishment is the first method, and when the value of the bit is 1, the method indicating that the SCTP link establishment is the second method.
In the first mode, the first node establishes the SCTP link with the second node according to the configuration information of the second node, and a specific application scenario is as follows:
when the number of the IP addresses of the second node is configured from a single node to multiple nodes, and the multiple IP addresses of the second node are all used to establish the SCTP link with the first node, the first node may establish the multi-hop SCTP link with the second node in the above manner. Therefore, the process of manually configuring the IP address information of the first node can be omitted, the workload and the complexity of network configuration adjustment are reduced, and the working efficiency is improved.
Preferably, the first method specifically includes: and the first node establishes an SCTP link with the second node according to the IP address configuration information of the second node.
Preferably, when initiating the SCTP link establishment procedure with the second node in the first mode, the first node specifically includes:
the first node acquires each IP address information of the second node;
and the first node initiates an SCTP PATH establishment process to any IP address of the second node.
Preferably, the acquiring, by the first node, each IP address information of the second node specifically includes:
the first node receives an initialization response INIT ACK message sent by the second node, wherein the INIT ACK message carries information of each IP address of the second node;
and the first node acquires each IP address information of the second node from the INIT ACK message.
Specifically, when a first node initiates a SCTP link establishment process with a second node in a first manner, the first node first sends an initialization INIT message to the second node, and when the second node receives the INIT message sent by the first node, sends an INIT ACK message to the first node, where the INIT ACK message carries information of each IP address of the second node. And then, the first node acquires each IP address information of the second node from the INIT ACK message, and initiates an SCTP link establishment process to each IP address of the second node according to the acquired each IP address information of the second node.
Preferably, after the first node initiates an SCTP PATH establishment procedure to any IP address of the second node for the IP address, the method further includes:
and the first node updates local IP address information, and the number of the updated local IP addresses is the same as that of the IP addresses of the second node.
Through the SCTP link establishment process in the first mode, the process that the first node automatically adapts to the local IP configuration information according to the IP configuration information of the second node is achieved, the workload and complexity of network configuration adjustment are reduced, and the risk of errors caused by manual operation can be reduced.
The above is the SCTP link establishment procedure in the first mode, and the second mode is described below.
Preferably, the second mode specifically includes: and the first node establishes an SCTP link with the second node according to the local IP address in the local configuration information and the IP address configuration information of the second node.
In the second manner, that is, the first node establishes the SCTP link with the second node according to the local configuration information, a specific application scenario is as follows:
scene one: before the first node establishes the SCTP link with the second node, the first node side already determines whether the second node supports the multi-hole, so that the local IP address information of the first node side can be accurately configured, and the number of the IP addresses of the first node is the same as that of the second node. In this scenario, the first node may directly establish an SCTP link with the second node according to the local configuration information.
Scene two: when the number of IP addresses of the second node is adjusted to be plural, it is desirable that a part of the plural IP addresses establish an SCTP link with the first node and another part establish an SCTP link with another node. For example, when the IP of the network element on the server side is cut over, the single IP address is changed into 5 IP addresses, which are IP1, IP2, IP3, IP4, and IP 5. IP1, IP2, IP3 of the 5 IP addresses are specified to establish an SCTP link with the client 1 side network element, and IP4, IP5 establish an SCTP link with the client 2 side network element. In view of simplification, the server side cannot respond to different INIT ACK messages (i.e., carry different IP address information) for different clients, and generally carries all the IP address information of the server side. Therefore, in this scenario, a second method needs to be adopted, that is, an SCTP link is established with the second node according to the local configuration information.
Scene three: and the first node performs local IP cut-over, and the number of the IP addresses is adjusted, so that the first node does not need to establish the SCTP link with the second node according to the configuration information of the second node, and only needs to establish the SCTP link with the second node according to the local configuration information.
Preferably, when initiating the SCTP link establishment procedure with the second node in the second mode, the first node specifically includes:
the first node reads each IP address configuration information of the second node stored in the local configuration information;
and the first node initiates an SCTP PATH establishment process to any IP address of the second node.
The solution of the embodiment of the invention is explained in detail below from an overall point of view.
Preferably, the method for establishing an SCTP link between network nodes provided in the embodiments of the present invention is mainly directed to a case where a multi-drop SCTP link is established between network nodes.
A schematic diagram of the SCTP protocol stack is shown in fig. 2. SCTP is in fact a connection-oriented protocol, but SCTP association has a broader concept than TCP's connection, and SCTP provides a method of establishing an association between a set of transport addresses between two SCTP endpoints, through which the SCTP endpoints can send SCTP messages. An SCTP association can contain a number of possible combinations of originating and destination addresses contained in the list of IP transport addresses for each endpoint.
Both SCTP endpoints of a SCTP association can be configured with multiple IP addresses, so that there are multiple paths between the two endpoints of a SCTP association, which is the multiaddress of the SCTP association (i.e., SCTP multi-point function).
The coupling may comprise multiple pathways, but only one preferred pathway. For example, the two endpoints of the SCTP link are a client-side network element and a server-side network element, respectively, and the client-side network element includes two IP addresses (1.1.1.1:3000 and 1.1.1.5:3000) and the server-side network element also includes two IP addresses (2.2.2.2: 3001 and 2.2.2.5: 3001), as shown in fig. 3. Generally, a plurality of IP addresses of the same network element share a port number.
The coupling comprises 4 pathways (Path0, Path1, Path2, Path 3). The selection of the 4 paths can be determined according to the data configuration, 4 paths are defined in fig. 3, and the preferred Path is Path 0. The 4 paths are briefly introduced as follows:
path 0: client side IP transport address 1(1.1.1.1:3000) sends SCTP messages to server side IP transport address 1 (2.2.2.2: 3001);
path 1: client side IP transport address 1(1.1.1.1:3000) sends SCTP messages to server side IP transport address 2 (2.2.2.5: 3001);
path 2: client side IP transport address 2(1.1.1.5:3000) sends SCTP messages to server side IP transport address 1 (2.2.2.2: 3001);
path 3: the client side IP transport address 2(1.1.1.5:3000) sends an SCTP message to the server side IP transport address 2 (2.2.2.5: 3001).
The working principle of sending the SCTP message between the endpoints is as follows: the SCTP message sent by the IP transport address of the client-side network element is sent to the server-side network element over the preferred path. When the preferred path fails, the SCTP may automatically switch to another standby path, and specifically, priorities of a plurality of paths may be preset. For example, when the primary Path0 fails, the Path is switched to the Path1 preferentially, and when the Path1 also fails, the Path is switched to the Path2 again.
According to practical applications, establishing a multi-hop SCTP link between network nodes may include the following five scenarios:
(1) in an Iub interface of a TD-SCDMA system, an RNC is adjusted into SCTP multiple points;
(2) in an Iu-CS interface of the TD-SCDMA system, the GGSN is adjusted to SCTP multiple points;
(3) in an Iu-PS interface of the TD-SCDMA system, SGSN is adjusted to SCTP multiple points;
(4) in an S1-MME interface of a TD-L TE system, an MME is adjusted to be a SCTP multi-point;
(5) in an X2 signaling plane interface of a TD-L TE system, a base station on a server side is adjusted to a plurality of holes.
Specific embodiments are given below by taking a TD-L TE S1-MME interface scenario as an example.
The IP address of the MME configuration local has only one IP, namely IP 1: 172.16.16.5, the base station configures the IP address information of the opposite terminal (i.e. MME) locally, and then when the MME adds an IP2 in the IP cutover process: 172.16.16.21, and both IP1 and IP2 are used to establish a multi-hop SCTP link with the base station, and at this time, the base station should establish an SCTP link with the MME in the first mode.
The method comprises the following specific steps:
And step 2, the base station determines the mode of establishing the SCTP link with the MME as a mode I according to the IE information.
And 3, the base station sends an INIT message to the MME and receives an INIT ACK message returned by the MME, wherein the INIT ACK message comprises IP address information of the MME, namely IP1 and IP 2.
And step 4, the base station respectively initiates the SCTP PATH establishment process to the IP1 and the IP 2.
And 5, when the two PATHs are successfully established, the base station locally and automatically updates the IP address information, and the number of the updated local IP addresses is two.
In the following, still taking the TD-L TE S1-MME interface scenario as an example, we give another embodiment.
The MME configures a local IP address with only one IP1, the base station configures IP address information of an opposite terminal (namely, the MME) locally, and then when the MME newly adds IP2, IP3, IP4 and IP5 in the IP cutover process, and specifies IP1 and IP2 in five IPs to establish a multi-hole SCTP link with the base station 1, and IP3, IP4 and IP5 establish a multi-hole SCTP link with the other base station 2, at this time, the base station should establish the SCTP link with the MME in a second selection mode.
The method comprises the following specific steps:
firstly, manual operation is required to update and configure the IP addresses of the base station 1 and the base station 2, specifically, batch SCTP IP cutover of multiple base stations can be performed from the network management side, that is, the IP address of the base station 1 is configured to be two, the IP address of the base station 2 is also configured to be two, and thus it is ensured that the number of the IP addresses of the base station 1 and the base station 2 corresponds to the MME.
And secondly, presetting IE information used for indicating the establishment mode of the SCTP link in the corresponding coupling tables of the base station 1 and the base station 2 as an indication of establishing the SCTP link with the MME in a second mode.
Therefore, after the base station 1 and the base station 2 read the local IE information, the mode of establishing the SCTP link with the MME is determined as the second mode.
And finally, the base station 1 and the base station 2 both initiate the SCTP link process by adopting a mode two.
Specifically, the base station 1 is taken as an example for description. The base station 1 sends an INIT message to the MME and receives an INITACK message returned by the MME, at this time, the base station 1 does not count the IP address configuration information of the MME carried in the INIT ACK message, but directly initiates SCTP PATH establishment processes to two IP addresses of the MME according to the local configuration information of the base station 1.
Referring to fig. 4, an apparatus for establishing an SCTP link between network nodes according to an embodiment of the present invention includes:
a determining unit 11, configured to determine a manner of establishing an SCTP link with a second node;
the execution unit 12 is configured to initiate an SCTP link establishment procedure with the second node in the manner described above;
wherein the mode is one of the following modes:
the first method is as follows: establishing an SCTP link with the second node according to the configuration information of the second node;
the second method comprises the following steps: and establishing an SCTP link with the second node according to the local configuration information.
The determining unit and the executing unit may be disposed in a specific entity device, such as a base station, an MME, an RNC, and the like, and the used device may be selected according to a specific application scenario.
Preferably, when the determining unit 11 determines the SCTP link establishment method with the second node, the determining unit is specifically configured to:
reading preset information field IE information used for indicating an SCTP link establishment mode;
and determining a mode for establishing the SCTP link with the second node according to the IE information.
Preferably, the first method specifically includes: and establishing an SCTP link with the second node according to the IP address configuration information of the second node.
Preferably, when initiating the SCTP link establishment procedure with the second node in the first mode, the executing unit 12 is specifically configured to:
acquiring each IP address information of the second node;
and aiming at any IP address of the second node, initiating an SCTP PATH establishment process to the IP address.
Preferably, when the executing unit 12 acquires each IP address information of the second node, it is specifically configured to:
receiving an initialization response INIT ACK message sent by the second node, wherein the INIT ACK message carries information of each IP address of the second node;
and acquiring each IP address information of the second node from the INIT ACK message.
Preferably, after the execution unit 12 initiates the SCTPPATH establishment procedure to any IP address of the second node, the execution unit is further configured to:
and updating the local IP address information, wherein the number of the updated local IP addresses is the same as that of the IP addresses of the second node.
Preferably, the second mode specifically includes: and establishing an SCTP link with the second node according to the local IP address in the local configuration information and the IP address configuration information of the second node.
In the embodiment of the present invention, each of the functional units may be implemented by using a specific hardware processor.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (12)
1. A method for establishing Stream Control Transmission Protocol (SCTP) links between network nodes is characterized by comprising the following steps:
the method comprises the steps that a first node determines a mode of establishing an SCTP link with a second node;
the first node initiates a SCTP link establishment process with the second node in the mode;
wherein the mode is one of the following modes:
the first method is as follows: the first node establishes an SCTP link with the second node according to the configuration information of the second node;
the second method comprises the following steps: the first node establishes an SCTP link with the second node according to local configuration information;
the method for the first node to establish the SCTP link with the second node includes:
the first node reads preset information field IE information used for indicating an SCTP link establishment mode;
the first node determines a mode of establishing an SCTP link with the second node according to the IE information;
the application scenario of the first mode is as follows:
the number of the IP addresses of the second node is configured to be a plurality from a single one, and the plurality of the IP addresses of the second node are all used for establishing the SCTP link with the first node;
the application scenario of the second mode is as follows:
scene one: before the first node establishes an SCTP link with the second node, the first node side determines whether the second node supports multiple holes or not;
scene two: when the number of the IP addresses of the second node is adjusted to be multiple, it is necessary that one part of the IP addresses of the multiple IP addresses establish an SCTP link with the first node, and the other part of the IP addresses establish an SCTP link with another node;
scene three: the number of the IP addresses needs to be adjusted when the first node is in local IP cutover.
2. The method according to claim 1, wherein the first mode specifically comprises: and the first node establishes an SCTP link with the second node according to the IP address configuration information of the second node.
3. The method according to claim 2, wherein when initiating the SCTP link establishment procedure with the second node in the first mode, the method specifically includes:
the first node acquires each IP address information of the second node;
and the first node initiates an SCTP PATH establishment process to any IP address of the second node aiming at the IP address.
4. The method of claim 3, wherein the obtaining, by the first node, each piece of IP address information of the second node specifically comprises:
the first node receives an initialization response INIT ACK message sent by the second node, wherein the INIT ACK message carries information of each IP address of the second node;
and the first node acquires each IP address information of the second node from the INIT ACK message.
5. The method according to claim 3 or 4, wherein after the first node initiates the SCTP PATH establishment procedure to any IP address of the second node, the method further comprises:
and the first node updates local IP address information, and the number of the updated local IP addresses is the same as that of the IP addresses of the second node.
6. The method according to claim 1, wherein the second mode specifically comprises: and the first node establishes an SCTP link with the second node according to the local IP address in the local configuration information and the IP address configuration information of the second node.
7. An apparatus for establishing a stream control transmission protocol, SCTP, link between network nodes, the apparatus comprising:
the determining unit is used for determining a mode of establishing the SCTP link with the second node;
the execution unit is used for initiating the SCTP link establishment process with the second node by adopting the mode;
wherein the mode is one of the following modes:
the first method is as follows: establishing an SCTP link with the second node according to the configuration information of the second node;
the second method comprises the following steps: establishing an SCTP link with the second node according to the local configuration information;
when the determining unit determines the SCTP link establishment method with the second node, the determining unit is specifically configured to:
reading preset information field IE information used for indicating an SCTP link establishment mode;
determining a mode for establishing the SCTP link with the second node according to the IE information;
the application scenario of the first mode is as follows:
the number of the IP addresses of the second node is configured to be a plurality from a single one, and the plurality of the IP addresses of the second node are all used for establishing the SCTP link with the first node;
the application scenario of the second mode is as follows:
scene one: before the first node establishes an SCTP link with the second node, the first node side determines whether the second node supports multiple holes or not;
scene two: when the number of the IP addresses of the second node is adjusted to be multiple, it is necessary that one part of the IP addresses of the multiple IP addresses establish an SCTP link with the first node, and the other part of the IP addresses establish an SCTP link with another node;
scene three: the number of the IP addresses needs to be adjusted when the first node is in local IP cutover.
8. The apparatus of claim 7, wherein the first mode specifically comprises: and establishing an SCTP link with the second node according to the IP address configuration information of the second node.
9. The apparatus according to claim 8, wherein the execution unit, when initiating the SCTP link establishment procedure with the second node in the first mode, is specifically configured to:
acquiring each IP address information of the second node;
and aiming at any IP address of the second node, initiating an SCTP PATH establishment process to the IP address.
10. The apparatus of claim 9, wherein the execution unit, when obtaining each IP address information of the second node, is specifically configured to:
receiving an initialization response INIT ACK message sent by the second node, wherein the INIT ACK message carries information of each IP address of the second node;
and acquiring each IP address information of the second node from the INIT ACK message.
11. The apparatus according to claim 9 or 10, wherein the performing unit is further configured to, after initiating the SCTP PATH establishment procedure to any IP address of the second node for the IP address, further:
and updating the local IP address information, wherein the number of the updated local IP addresses is the same as that of the IP addresses of the second node.
12. The apparatus according to claim 7, wherein the second mode includes: and establishing an SCTP link with the second node according to the local IP address in the local configuration information and the IP address configuration information of the second node.
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