CN103733600A

CN103733600A - Method, node and device for establishing link

Info

Publication number: CN103733600A
Application number: CN201380001507.2A
Authority: CN
Inventors: 席辉
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-06-28
Filing date: 2013-06-28
Publication date: 2014-04-16
Also published as: WO2014205819A1

Abstract

An embodiment of the present invention provides a method, a node and a device for establishing a link, and relates to the technical field of communication, for solving the problem of misjudgement to link state caused by inconsistent link failure time length of a first node and a second node, thereby raising reliability of the link. The method comprises the steps as follows: the first node transmits a first initialization message to the second node; the first node receives a first initialization response message transmitted by the second node; if the first initialization response message carries configuration parameters of the second node which are the same with configuration parameters of the first node, or the first initialization response message carries a first identification, the first node establishes the link with the second node; if the first initialization response message carries configuration parameters of the second node which are different from configuration parameters of the first node, the first node adopts the configuration parameters of the second node as the configuration parameters of the first node.

Description

A kind of method, node and device of setting up link

Technical field

The present invention relates to the communications field, relate in particular to a kind of method, node and device of setting up link.

Background technology

SCTP(Stream Control Transmission Protocol, SCTP) be a kind of host-host protocol reliably, stable, orderly data delivery service can be provided between two nodes.SCTP detect link whether the method for fault comprise two kinds of scenes: 1, when there is no transfer of data on link, can carry out fault detect according to the heartbeat message sending between two nodes; 2,, when having transfer of data on link, can carry out fault detect according to the data that send between two nodes.Two corresponding above-mentioned scenes, Stream Control Transmission Protocol can adopt different algorithms to calculate link failure duration.

But, after SCTP link establishment, when SCTP link carries out link failure detection, if the parameter configuration difference of two nodes is easily mistaken for link failure by the state of link.For example, it is 60 seconds that node A adopts the detection link failure duration that corresponding algorithm calculates, it is 30 seconds that Node B adopts the detection link failure duration that corresponding algorithm calculates, in 30 seconds, the heartbeat message that Node B sends to node A is not all received response, and Node B is thought now link fault, and then closes link, but node A still in detecting the state of link, therefore still can send heartbeat message to Node B during this period; If the heartbeat message that node A sends to Node B has received response when being greater than 30 seconds and being less than 60 seconds, node A thinks that this link has recovered normally, and wherein, heartbeat message is for monitoring the running status of machine network memory.But because Node B has been made the judgement of link failure, system can be carried out subsequent treatment according to link failure, therefore, has reduced the reliability of link.

Summary of the invention

Embodiments of the invention provide a kind of method, node and device of setting up link, to solve first node and Section Point due to the inconsistent erroneous judgement causing Link State of link failure duration, thereby have improved the reliability of link.

A first aspect of the present invention provides a kind of method of setting up link, and the method comprises:

First node sends the first Initial message to Section Point, and wherein, described the first Initial message is used to indicate the link of setting up between described first node and Section Point;

Described first node receives the first initialization response message that described Section Point sends;

If described the first initialization response message carries the configuration parameter of the Section Point identical with the configuration parameter of described first node, or, described the first initialization response message carries the first sign, link between described first node foundation and described Section Point, wherein, described the first sign is used to indicate described first node according to the configuration parameter of described first node, the link between foundation and described Section Point;

If described the first initialization response message carries the configuration parameter of the Section Point different from the configuration parameter of described first node, the configuration parameter of described first node using the configuration parameter of described Section Point as described first node.

In the possible implementation of the first, according to first aspect, after the configuration parameter at described first node using the configuration parameter of described Section Point as described first node, described method also comprises:

Described first node sends link termination messages to described Section Point, and wherein, described link termination messages is used to indicate closes the link between first node and Section Point described in current time;

Described first node sends the second Initial message to described Section Point, and wherein, described the second Initial message is used to indicate the link of setting up between described first node and Section Point;

Described first node receives the second initialization response message that described Section Point sends, and wherein, described the second initialization response message is used to indicate the foundation of agreeing to link between described first node and Section Point;

Described first node is according to the configuration parameter of described first node, set up and described Section Point between link.

In the possible implementation of the second, in conjunction with first aspect or the possible implementation of the first, described method also comprises:

Described first node confirms that the configuration parameter of described Section Point meets first when pre-conditioned, described first node judges that whether the configuration parameter of described Section Point is identical with the configuration parameter of described first node, wherein, described first pre-conditionedly refers to that the parameter type value of described Section Point and the parameter type value of described first node equate, described parameter type value belongs to of described configuration parameter.

In the third possible implementation, in conjunction with first aspect or possible implementation or the possible implementation of the second of the first, described configuration parameter belongs to of parameter Unrecognized Parameter unconfirmed that described the first initialization response message carries.

In the 4th kind of possible implementation, in conjunction with first aspect or the possible implementation of the first, to the third possible implementation, described the first sign takies the highest two bits of the attribute block Chunk Flags that described the first initialization response message carries.

In the 5th kind of possible implementation, in conjunction with first aspect or the possible four kinds of possible implementations of implementation to the of the first, described first node is client node, and described Section Point is service end node.

A second aspect of the present invention provides a kind of method of setting up link, and the method comprises:

Section Point receives the first Initial message that first node sends, and wherein, described the first Initial message is used to indicate the link of setting up between described first node and Section Point;

Described Section Point sends the first initialization response message to described first node, wherein, described the first initialization response message carries configuration parameter or first sign of described Section Point, described the first sign is used to indicate described first node according to the configuration parameter of described first node, the link between foundation and described Section Point;

Link between described Section Point foundation and described first node.

In the possible implementation of the first, according to second aspect, before the link between described Section Point foundation and described first node, described method also comprises:

Described Section Point receives the link termination messages that described first node sends, and wherein, described link termination messages is used to indicate closes the link between first node and Section Point described in current time;

Described Section Point receives the second Initial message that described first node sends, and wherein, described the second Initial message is used to indicate the link of setting up between described first node and Section Point;

Described Section Point sends the second initialization response message to described first node, and wherein, described the second initialization response message is used to indicate the foundation of agreeing to link between described first node and Section Point.

In the possible implementation of the second, in conjunction with second aspect or the possible implementation of the first, described configuration parameter belongs to of Unrecognized Parameter that described the first initialization response message carries.

In the third possible implementation, in conjunction with second aspect or possible implementation or the possible implementation of the second of the first, described the first sign takies the highest two bits of the attribute block Chunk Flags that described the first initialization response message carries.

In the 4th kind of possible implementation, in conjunction with second aspect or the possible implementation of the first, to the third possible implementation, described first node is client node, and described Section Point is service end node.

A third aspect of the present invention provides a kind of client node, and this client node comprises:

Sending module, for send the first Initial message to Section Point, wherein, described the first Initial message is used to indicate the link of setting up between described first node and Section Point;

Receiver module, the first initialization response message sending for receiving described Section Point;

Link module, if carry the configuration parameter of the Section Point identical with the configuration parameter of described first node for described the first initialization response message, or, described the first initialization response message carries the first sign, link between foundation and described Section Point, wherein, described the first sign is used to indicate described first node according to the configuration parameter of described first node, the link between foundation and described Section Point;

Update module, if carry the configuration parameter of the Section Point different from the configuration parameter of described first node, the configuration parameter using the configuration parameter of described Section Point as described first node for described the first initialization response message.

In the possible implementation of the first, according to the third aspect,

Described sending module, also for sending link termination messages to described Section Point, wherein, described link termination messages is used to indicate closes the link between first node and Section Point described in current time;

Described sending module, also for sending the second Initial message to described Section Point, wherein, described the second Initial message is used to indicate the link of setting up between described first node and Section Point;

Described receiver module, the second initialization response message also sending for receiving described Section Point, wherein, described the second initialization response message is used to indicate the foundation of agreeing to link between described first node and Section Point;

Described link module, also for according to the configuration parameter of described first node, set up and described Section Point between link.

In the possible implementation of the second, in conjunction with the third aspect or the possible implementation of the first, described client node also comprises:

Confirm module, for confirming that the configuration parameter of described Section Point meets first when pre-conditioned, judge that whether the configuration parameter of described Section Point and the configuration parameter of described first node be identical, wherein, described first pre-conditionedly refers to that the parameter type value of described Section Point and the parameter type value of described first node equate, described parameter type value belongs to of described configuration parameter.

In the third possible implementation, in conjunction with the third aspect or possible implementation or the possible implementation of the second of the first, described configuration parameter belongs to of parameter Unrecognized Parameter unconfirmed that described the first initialization response message carries.

In the 4th kind of possible implementation, in conjunction with the third aspect or the possible implementation of the first, to the third possible implementation, described the first sign takies the highest two bits of the attribute block Chunk Flags that described the first initialization response message carries.

In the 5th kind of possible implementation, in conjunction with the third aspect or the possible four kinds of possible implementations of implementation to the of the first, described first node is client node, and described Section Point is service end node.

A fourth aspect of the present invention provides a kind of service end node, and this service end node comprises:

Receiving element, the first Initial message sending for receiving first node, wherein, described the first Initial message is used to indicate the link of setting up between described first node and Section Point;

Transmitting element, for sending the first initialization response message to described first node, wherein, described the first initialization response message carries configuration parameter or first sign of described Section Point, described the first sign is used to indicate described first node according to the configuration parameter of described first node, the link between foundation and described Section Point;

Link unit, for set up and described first node between link.

In the possible implementation of the first, according to fourth aspect,

Described receiving element, the link termination messages also sending for receiving described first node, wherein, described link termination messages is used to indicate closes the link between first node and Section Point described in current time;

Described receiving element, the second Initial message also sending for receiving described first node, wherein, described the second Initial message is used to indicate the link of setting up between described first node and Section Point;

Described transmitting element, also for send the second initialization response message to described first node, wherein, described the second initialization response message is used to indicate the foundation of agreeing to link between described first node and Section Point.

In the possible implementation of the second, in conjunction with fourth aspect or the possible implementation of the first, described configuration parameter belongs to of Unrecognized Parameter that described the first initialization response message carries.

In the third possible implementation, in conjunction with fourth aspect or possible implementation or the possible implementation of the second of the first, described the first sign takies the highest two bits of the attribute block Chunk Flags that described the first initialization response message carries.

In the 4th kind of possible implementation, in conjunction with fourth aspect or the possible implementation of the first, to the third possible implementation, described first node is client node, and described Section Point is service end node.

A fifth aspect of the present invention provides a kind of client terminal device, and this client terminal device comprises:

Transmitter, for send the first Initial message to Section Point, wherein, described the first Initial message is used to indicate the link of setting up between described first node and Section Point;

Receiver, the first initialization response message sending for receiving described Section Point;

Processor, if carry the configuration parameter of the Section Point identical with the configuration parameter of described first node for described the first initialization response message, or, described the first initialization response message carries the first sign, link between foundation and described Section Point, wherein, described the first sign is used to indicate described first node according to the configuration parameter of described first node, link between foundation and described Section Point, if and described the first initialization response message carries the configuration parameter of the Section Point different from the configuration parameter of described first node, configuration parameter using the configuration parameter of described Section Point as described first node.

In the possible implementation of the first, according to the 5th aspect,

Described transmitter, also for sending link termination messages to described Section Point, wherein, described link termination messages is used to indicate closes the link between first node and Section Point described in current time;

Described transmitter, also for sending the second Initial message to described Section Point, wherein, described the second Initial message is used to indicate the link of setting up between described first node and Section Point;

Described receiver, the second initialization response message also sending for receiving described Section Point, wherein, described the second initialization response message is used to indicate the foundation of agreeing to link between described first node and Section Point;

Described processor, also for according to the configuration parameter of described first node, set up and described Section Point between link.

In the possible implementation of the second, in conjunction with the 5th aspect or the possible implementation of the first,

Described processor, also for confirming that the configuration parameter of described Section Point meets first when pre-conditioned, judge that whether the configuration parameter of described Section Point and the configuration parameter of described first node be identical, wherein, described first pre-conditionedly refers to that the parameter type value of described Section Point and the parameter type value of described first node equate, described parameter type value belongs to of described configuration parameter.

In the third possible implementation, in conjunction with the 5th aspect or possible implementation or the possible implementation of the second of the first, described configuration parameter belongs to of parameter Unrecognized Parameter unconfirmed that described the first initialization response message carries.

In the 4th kind of possible implementation, in conjunction with the 5th aspect or the possible implementation of the first, to the third possible implementation, described the first sign takies the highest two bits of the attribute block Chunk Flags that described the first initialization response message carries.

In the 5th kind of possible implementation, in conjunction with the 5th aspect or the possible four kinds of possible implementations of implementation to the of the first, described first node is client node, and described Section Point is service end node.

A sixth aspect of the present invention also provides a kind of service end device, and this service end device comprises:

Receiver, the first Initial message sending for receiving first node, wherein, described the first Initial message is used to indicate the link of setting up between described first node and Section Point;

Transmitter, for sending the first initialization response message to described first node, wherein, described the first initialization response message carries configuration parameter or first sign of described Section Point, described the first sign is used to indicate described first node according to the configuration parameter of described first node, the link between foundation and described Section Point;

Processor, for set up and described first node between link.

In the possible implementation of the first, according to the 6th aspect,

Described receiver, the link termination messages also sending for receiving described first node, wherein, described link termination messages is used to indicate closes the link between first node and Section Point described in current time;

Described receiver, the second Initial message also sending for receiving described first node, wherein, described the second Initial message is used to indicate the link of setting up between described first node and Section Point;

Described transmitter, also for send the second initialization response message to described first node, wherein, described the second initialization response message is used to indicate the foundation of agreeing to link between described first node and Section Point.

In the possible implementation of the second, in conjunction with the 6th aspect or the possible implementation of the first, described configuration parameter belongs to of Unrecognized Parameter that described the first initialization response message carries.

In the third possible implementation, in conjunction with the 6th aspect or possible implementation or the possible implementation of the second of the first, described the first sign takies the highest two bits of the attribute block Chunk Flags that described the first initialization response message carries.

In the 4th kind of possible implementation, in conjunction with the 6th aspect or the possible implementation of the first, to the third possible implementation, described first node is client node, and described Section Point is service end node.

Pass through technique scheme, because first node can be by receiving the first initialization response message from the configuration parameter that carries Section Point of Section Point, the detection link failure duration of first node and Section Point is equated, solve the erroneous judgement to Link State that between first node and second section, point causes because link failure duration is inconsistent, improved the reliability of link.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

The schematic flow sheet one of a kind of method of setting up link that Fig. 1 provides for the embodiment of the present invention;

The schematic flow sheet two of a kind of method of setting up link that Fig. 2 provides for the embodiment of the present invention;

Fig. 3 is the process schematic diagram of setting up link between prior art first node and Section Point;

Between the first node that Fig. 4 provides for the embodiment of the present invention and Section Point, set up the process schematic diagram one of link;

Between the first node that Fig. 5 provides for the embodiment of the present invention and Section Point, set up the process schematic diagram two of link;

The another kind that Fig. 6 provides for the embodiment of the present invention is set up the schematic flow sheet one of the method for link;

The another kind that Fig. 7 provides for the embodiment of the present invention is set up the schematic flow sheet two of the method for link;

The structural representation one of the first node that Fig. 8 provides for the embodiment of the present invention;

The structural representation two of the first node that Fig. 9 provides for the embodiment of the present invention;

The structural representation of the Section Point that Figure 10 provides for the embodiment of the present invention;

The structural representation of the first device that Figure 11 provides for the embodiment of the present invention;

The second structural representation installing that Figure 12 provides for the embodiment of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.

The embodiment of the present invention provides a kind of method of setting up link, and as shown in Figure 1, the method comprises:

S101, first node send the first Initial message to Section Point.

Wherein, the first Initial message is used to indicate the link of setting up between first node and Section Point.

SCTP is a kind of host-host protocol reliably, and stable, orderly data delivery service can be provided between two nodes.Stream Control Transmission Protocol adopts corresponding algorithm to calculate and detects link failure duration under different scenes: 1, when there is no transfer of data on link, can carry out fault detect according to the heartbeat message sending between two nodes; 2,, when having transfer of data on link, can carry out fault detect according to the data that send between two nodes.Wherein, the in the situation that of not having data to send on link, according to formula (1), calculate and detect link failure duration; The in the situation that of having data to send on link, according to formula (2), calculate and detect link failure duration:

\begin{matrix} Ti = {HB . interval + Min [2 * RTO, RTO . Max]} + {HB . interval \\ + Min [4 * RTO, RTO . Max]} + . . . + {HB . interval + \\ Min [2^(Association . Max . Retrans) * RTO, RTO . Max]} \end{matrix}

Formula (1)

\begin{matrix} Td = RTO + Min [2 * RTO, RTO . Max] + Min [4 * RTO, RTO . Max] \\ + . . . + Min [2^(Association, Max . Retrans - 1) * RTO, RTO . Max] \end{matrix}

Formula (2)

Wherein, Ti refers to the detection link failure duration calculating the in the situation that of not having data to send on link, Td refers to the detection link failure duration calculating the in the situation that of having data to send on link, HB.interval refers to SCTP link eartbeat interval, RTO refers to SCTP retransmission timer duration, RTO.interval refers to the initial duration of SCTP retransmission timer, RTO.Max refers to the maximum duration of SCTP retransmission timer, Association.Max.Retrans refers to the maximum coupling number of retransmissions of SCTP link, Min[A, B] refer to and get a value less in A and B, 2^(Association.Max.Retrans) refer to 2 Association.Max.Retrans power.

When two nodes detect link whether during fault mutually, for example, when node A sends heartbeat message to Node B, Node B also sends heartbeat message to node A, because the parameter configuration of node A and Node B is different, the link failure duration calculating according to formula is also different, link can be at shorter link failure duration overtime rear judgement link failure, even if now link recovers, the shorter side's node of link failure duration still can be to system reporting links fault, therefore, easily the link having recovered is judged as to fault.

A kind of method of setting up link that the embodiment of the present invention provides, can make two detection link failure durations between node equate, thereby prevent the erroneous judgement to Link State that first node and Section Point cause because link failure duration is inconsistent, improved the reliability of link.

First, first node sends the first Initial message to Section Point.Wherein, first node is client node, and Section Point is service end node, and the first Initial message is the INIT message that client node sends to service end node, and the first Initial message is used to indicate the link of setting up between first node and Section Point.

S102, first node receive the first initialization response message that Section Point sends.

At first node, send the first Initial message to Section Point, first node receives the first initialization response message that Section Point sends.

Understandable, the first initialization response message can be considered as, for responding above-mentioned the first Initial message, hereinafter repeating no more.

If S103 the first initialization response message carries the configuration parameter of the Section Point identical with the configuration parameter of first node, or the first initialization response message carries the first sign, the link between first node foundation and Section Point.

Wherein, the first sign is used to indicate first node according to the configuration parameter of first node, the link between foundation and Section Point.

First node receives after the first initialization response message of Section Point transmission, first node need to confirm whether the first initialization response message carries configuration parameter or first sign of Section Point, wherein, the first sign is used to indicate first node according to the configuration parameter of first node, the link between foundation and Section Point.

First, first node receives after the first initialization response message of Section Point transmission, the first initialization response message that parsing receives, if now first node can parse the configuration parameter that carries Section Point in the first initialization response message, first node confirms that whether the configuration parameter of Section Point is identical with the configuration parameter of first node.If the configuration parameter of Section Point that the first initialization response message carries is identical with the configuration parameter of first node, illustrate that now the detection link failure duration of first node and the detection link failure duration of Section Point equate, do not exist between first node and Section Point due to the erroneous judgement that detects the Link State that link failure duration etc. do not cause, first node directly set up and Section Point between link.

Accordingly, if now first node can not parse the configuration parameter of the Section Point carrying in the first initialization response message, but parse in the first initialization response message, carry the first sign.Because the first sign is used to indicate first node according to the configuration parameter of first node, the link between foundation and Section Point, so the link between first node foundation and Section Point.To be described in detail in the following embodiments, repeat no more herein.

It should be noted that, configuration parameter comprises the maximum coupling number of retransmissions of link eartbeat interval, the initial duration of retransmission timer, the maximum duration of retransmission timer, the minimum duration of retransmission timer and link.

Concrete, how the first initialization response message carries the configuration parameter of Section Point, and the position of the configuration parameter of Section Point in the first initialization response message will be described in detail in the following embodiments, repeats no more herein.

If S104 the first initialization response message carries the configuration parameter of the Section Point different from the configuration parameter of first node, the configuration parameter of first node using the configuration parameter of Section Point as first node.

First node receives after the first initialization response message of Section Point transmission, the first initialization response message that parsing receives, if now first node can parse the configuration parameter that carries Section Point in the first initialization response message, first node confirms that whether the configuration parameter of Section Point is identical with the configuration parameter of first node.

If the configuration parameter of Section Point that the first initialization response message carries is different with the configuration parameter of first node, illustrate that the detection link failure duration of first node and the detection link failure duration of Section Point are unequal, between first node and Section Point, may occur due to the erroneous judgement that detects the Link State that link failure duration etc. do not cause.Now, the configuration parameter of first node using the configuration parameter of Section Point as first node, and re-establish the link between first node and Section Point.

Concrete, after the configuration parameter of first node using the configuration parameter of Section Point as first node, the process that how to re-establish link between first node and Section Point will be described in detail in the following embodiments, repeat no more herein.

The embodiment of the present invention provides a kind of method of setting up link, by first node, to Section Point, send the first Initial message, wherein, the first Initial message is used to indicate the link of setting up between first node and Section Point, first node receives the first initialization response message that Section Point sends, if the first initialization response message carries the configuration parameter of the Section Point identical with the configuration parameter of first node, or, the first initialization response message carries the first sign, link between first node foundation and Section Point, wherein, the first sign is used to indicate first node according to the configuration parameter of first node, link between foundation and Section Point, if and the first initialization response message carries the configuration parameter of the Section Point different from the configuration parameter of first node, the configuration parameter of first node using the configuration parameter of Section Point as first node.By this scheme, because first node can be by receiving the first initialization response message from the configuration parameter that carries Section Point of Section Point, the detection link failure duration of first node and Section Point is equated, solve the erroneous judgement to Link State that between first node and second section, point causes because link failure duration is inconsistent, improved the reliability of link.

The embodiment of the present invention provides a kind of method of setting up link, and as shown in Figure 2, the method comprises:

S201, first node send the first Initial message to Section Point.

SCTP is a kind of host-host protocol reliably, and stable, orderly data delivery service can be provided between two nodes.Stream Control Transmission Protocol adopts corresponding algorithm to calculate and detects link failure duration under different scenes: 1, when there is no transfer of data on link, can carry out fault detect according to the heartbeat message sending between two nodes; 2,, when having transfer of data on link, can carry out fault detect according to the data that send between two nodes.

In prior art, according to Stream Control Transmission Protocol, set up the process of link as shown in Figure 3 between first node and Section Point, first node is client node, and Section Point is service end node.First first node sends INIT message to Section Point, and Section Point, after the INIT message of receiving from first node, sends INIT ACK message to first node.First node sends COOKIE ECHO message to Section Point subsequently, and Section Point, after the COOKIE ECHO message of receiving from first node, sends COOKIE ACK message to first node.Thereby, set up the link between first node and Section Point.

A kind of method of setting up link that the embodiment of the present invention provides, can make two detection link failure durations between node equate, thereby prevent the erroneous judgement to Link State that first node and Section Point cause because link failure duration is inconsistent, improved the reliability of link, improving product performance.

S202, first node receive the first initialization response message that Section Point sends.

Wherein, the first initialization response message carries configuration parameter or first sign of Section Point, and the first sign is used to indicate first node according to the configuration parameter of first node, the link between foundation and Section Point.

Wherein, configuration parameter belongs to of parameter Unrecognized Parameter unconfirmed that the first initialization response message carries.

According to RFC 4960 agreement regulations, parameter Unrecognized Parameter unconfirmed is positioned at optional/variable-length parameter Optional/Variable-Length Parameters, wherein, Optional/Variable-Length Parameters specifically comprises in RFC 4960 agreements: IPv4(Internet Protocol version 4, Internet Protocol version 4) address, IPv6(Internet Protocol version 6, Internet Protocol version 6) address, parameter Unrecognized Parameter unconfirmed, the parameters such as Hostname address Host Name Address.The length of parameter Unrecognized Parameter unconfirmed is 8 bytes.

According to the rules, the form of parameter Unrecognized Parameter unconfirmed in RFC 4960 agreements is as follows:

By above-mentioned form, can be found out, the length of parameter Unrecognized Parameter unconfirmed is 8 bytes.But, RFC4960 agreement does not stipulate will write what parameter in parameter Unrecognized Parameter unconfirmed, and the first initialization response message that the embodiment of the present invention provides carries the configuration parameter of Section Point, the configuration parameter of Section Point is arranged in parameter Unrecognized Parameter unconfirmed.Therefore, the form by parameter Unrecognized Parameter unconfirmed in RFC4960 agreement is revised, and the configuration parameter of Section Point is arranged in parameter Unrecognized Parameter unconfirmed.

Exemplary, the concrete form of parameter Unrecognized Parameter unconfirmed is as follows:

Wherein, the outer parameter type value of parameter Unrecognized Parameter unconfirmed is 8, and length is 32 bytes; Internal layer parameter type value is 8, length is 24 bytes, and parameter Unrecognized Parameter unconfirmed comprises the initial duration RTO.Initial of SCTP retransmission timer, the minimum duration RTO.Min of SCTP retransmission timer, the maximum duration RTO.Max of SCTP retransmission timer, the maximum coupling number of retransmissions Association.Max.Retrans of SCTP link, maximum retransmit path P ath.Max.Retrans, the SCTP link eartbeat interval HB.interval of SCTP link.

It should be noted that, just a kind of situation wherein of the Type=8 in the second layer, the Type value in the second layer is not limited to 8, can be also other values, and the present invention does not limit.And the value of Type=8 in ground floor is fixed.

Certainly, the concrete form of parameter Unrecognized Parameter unconfirmed is not limited to above-mentioned form, can be also other forms that carry the configuration parameter of Section Point, and the present invention does not limit.

S203, first node confirm that the configuration parameter of Section Point meets first when pre-conditioned, and first node judges that whether the configuration parameter of Section Point is identical with the configuration parameter of first node.

Wherein, first pre-conditionedly refers to that the parameter type value of Section Point and the parameter type value of first node equate, parameter type value belongs to of configuration parameter.Be that the Type value of Section Point and the Type value of first node equate.Namely the Type value of the ectonexine in the concrete form of the parameter Unrecognized Parameter unconfirmed of the Type value of ectonexine in the concrete form of the parameter Unrecognized Parameter unconfirmed of the configuration parameter of first node and the configuration parameter of Section Point equates.

If it is first pre-conditioned that the configuration parameter of Section Point does not meet, illustrate that first node now can not parse the configuration parameter of the Section Point carrying in the first initialization response message, first node does not need to judge that whether the configuration parameter of Section Point is identical with the configuration parameter of first node.

In this case, although first node can also continue to set up link with Section Point, first node cannot read the configuration parameter of Section Point, cannot avoid the state of link to be mistaken for link failure.

If S204 the first initialization response message carries the configuration parameter of the Section Point identical with the configuration parameter of first node, or the first initialization response message carries the first sign, the link between first node foundation and Section Point.

It should be noted that, the first sign takies the highest two bits of the attribute block Chunk Flags that the first initialization response message carries.The first sign represents that the highest two bits of the first initialization response message flag piece Chunk Flags are set to 0x10.Wherein, 10 representatives are skipped this parameter and are continued the instruction of processing, and the first sign is used to indicate first node and skips the configuration parameter of Section Point and continue to set up the link between first node and Section Point.

Why the highest two bits of the first initialization response message flag piece Chunk Flags to be provided with to the first sign, after being the first initialization response message in order to receive Section Point transmission when first node, even if cannot confirm the parameter unconfirmed of carrying in Section Point, cannot read out the concrete numerical value of parameter unconfirmed, also can proceed subsequent treatment, set up the link between first node and Section Point, promoted the compatibility between first node and Section Point.

If S205 the first initialization response message carries the configuration parameter of the Section Point different from the configuration parameter of first node, the configuration parameter of first node using the configuration parameter of Section Point as first node.

S206, first node send link termination messages to Section Point.

Wherein, link termination messages is used to indicate the link of closing between current time first node and Section Point.

After the configuration parameter of first node using the configuration parameter of Section Point as first node, re-establish link between first node and Section Point.First, first node sends link termination messages to Section Point, stops the link establishment of this first node and Section Point.

It should be noted that, in the embodiment of the present invention, first node sends link termination messages to Section Point, to stop the link establishment of this first node and Section Point.Wherein, first node is to send link termination messages to Section Point by ABORT/SHUTDOWN order, thereby stops the link establishment of this first node and Section Point.

S207, first node send the second Initial message to Section Point.

Wherein, the second Initial message is used to indicate the link of setting up between first node and Section Point.

First node sends link termination messages to Section Point, stops after the link establishment of this first node and Section Point, and first node sends the second Initial message to Section Point, re-establishes the link between first node and Section Point.Wherein, the second Initial message is the INIT message that client node sends to service end node, and the second Initial message is used to indicate the link of setting up between first node and Section Point.

S208, first node receive the second initialization response message that Section Point sends.

Wherein, the second initialization response message is used to indicate the foundation of agreeing to link between first node and Section Point.

It should be noted that, described the second initialization response message of the embodiment of the present invention, both can carry the configuration parameter of Section Point, also can not carry the configuration parameter of Section Point, and the present invention does not limit.

Understandable, the second initialization response message can be considered as, for responding above-mentioned the second Initial message, hereinafter repeating no more.

S209, first node be according to the configuration parameter of first node, set up and Section Point between link.

First node receives after the second initialization response message of Section Point transmission, according to the configuration parameter of first node, and the link between foundation and Section Point.

You need to add is that, the first node that the embodiment of the present invention provides is client node, and Section Point is service end node.Wherein, client node can be the wired or wireless subscriber equipmenies such as mobile phone, panel computer, and service end node can be base station, and the present invention does not limit.

Exemplary, it is first pre-conditioned that first node confirms that the configuration parameter of Section Point meets, and the configuration parameter of Section Point is identical with the configuration parameter of first node, sets up the process of link as shown in Figure 4 between first node and Section Point.First node is client node, and Section Point is service end node.First first node sends the first Initial message to Section Point, Section Point is after the first Initial message of receiving from first node, send the first initialization response message to first node, wherein, the first initialization response message carries the configuration parameter of Section Point.First node confirms that the configuration parameter of Section Point meets first pre-conditioned, and the configuration parameter of Section Point is identical with the configuration parameter of first node, first node sends COOKIE ECHO message to Section Point subsequently, Section Point, after the COOKIE ECHO message of receiving from first node, sends COOKIE ACK message to first node.Thereby, set up the link between first node and Section Point.

Exemplary, it is first pre-conditioned that first node confirms that the configuration parameter of Section Point meets, and the configuration parameter of Section Point is different with the configuration parameter of first node, sets up the process of link as shown in Figure 5 between first node and Section Point.First node is client node, and Section Point is service end node.First first node sends the first Initial message to Section Point, Section Point is after the first Initial message of receiving from first node, send the first initialization response message to first node, wherein, the first initialization response message carries the configuration parameter of Section Point.First node confirms that the configuration parameter of Section Point meets first pre-conditioned, and the configuration parameter of Section Point is different from the configuration parameter of first node, the configuration parameter of first node using the configuration parameter of Section Point as first node subsequently, first node sends link termination messages to Section Point, stops this link establishment.Re-establish link, first first node sends the second Initial message to Section Point, and Section Point, after the second Initial message of receiving from first node, sends the second initialization response message to first node.First node sends COOKIE ECHO message to Section Point, and Section Point, after the COOKIE ECHO message of receiving from first node, sends COOKIE ACK message to first node.Thereby, set up the link between first node and Section Point.

The embodiment of the present invention provides a kind of method of setting up link, and as shown in Figure 6, the method comprises:

S301, Section Point receive the first Initial message that first node sends.

First, Section Point receives the first Initial message that first node sends.Wherein, first node is client node, and Section Point is service end node, and the first Initial message is the INIT message that client node sends to service end node, and the first Initial message is used to indicate the link of setting up between first node and Section Point.

S302, Section Point send the first initialization response message to first node.

Section Point receives after the first Initial message of first node transmission, to first node, sends the first initialization response message.Wherein, the first initialization response message carries configuration parameter or first sign of Section Point.

It should be noted that the maximum coupling number of retransmissions that comprises link eartbeat interval, the initial duration of retransmission timer, the maximum duration of retransmission timer, the minimum duration of retransmission timer and link of configuration parameter; The first sign is used to indicate first node according to the configuration parameter of first node, the link between foundation and Section Point.

Link between S303, Section Point foundation and first node.

Section Point sends and carries after the first initialization response message of configuration parameter of Section Point to first node, the link between foundation and first node.

The embodiment of the present invention provides a kind of method of setting up link, by Section Point, receive the first Initial message that first node sends, wherein, the first Initial message is used to indicate the link of setting up between first node and Section Point, Section Point sends the first initialization response message to first node, wherein, the first initialization response message carries configuration parameter or first sign of Section Point, the first sign is used to indicate first node according to the configuration parameter of first node, link between foundation and Section Point, and the link between Section Point foundation and first node.By this scheme, because first node can be by receiving the first initialization response message from the configuration parameter that carries Section Point of Section Point, the detection link failure duration of first node and Section Point is equated, solve the erroneous judgement to Link State that between first node and second section, point causes because link failure duration is inconsistent, improved the reliability of link.

The embodiment of the present invention provides a kind of method of setting up link, and as shown in Figure 7, the method comprises:

S401, Section Point receive the first Initial message that first node sends.

S402, Section Point send the first initialization response message to first node.

It should be noted that the maximum coupling number of retransmissions that comprises link eartbeat interval, the initial duration of retransmission timer, the maximum duration of retransmission timer, the minimum duration of retransmission timer and link of configuration parameter; The first sign is used to indicate first node according to the configuration parameter of first node, set up and Section Point between link, the first sign takies the highest two bits of the attribute block Chunk Flags that the first initialization response message carries.。

According to RFC4960 agreement, stipulate, parameter Unrecognized Parameter unconfirmed is positioned at optional/variable-length parameter Optional/Variable-Length Parameters, wherein, Optional/Variable-Length Parameters specifically comprises in RFC4960 agreement: IPv4(Internet Protocol version4, Internet Protocol version 4) address, IPv6(Internet Protocol version6, Internet Protocol version 6) address, parameter Unrecognized Parameter unconfirmed, the parameters such as Hostname address Host Name Address.The length of parameter Unrecognized Parameter unconfirmed is 8 bytes.

According to the rules, the form of parameter Unrecognized Parameter unconfirmed in RFC4960 agreement is as follows:

You need to add is that, the first sign takies the highest two bits of the attribute block Chunk Flags that the first initialization response message carries.The first sign represents that the highest two bits of the first initialization response message flag piece Chunk Flags are set to 0x10.Wherein, 10 representatives are skipped this parameter and are continued the instruction of processing, and the first sign is used to indicate first node and skips the configuration parameter of Section Point and continue to set up the link between first node and Section Point.

Section Point sends after the first initialization response message to first node, and first node is resolved the first initialization response message.If first node is confirmed the configuration parameter of Section Point and is not met first pre-conditioned, wherein, first pre-conditionedly refers to that the parameter type value of Section Point and the parameter type value of first node equate, parameter type value belongs to of configuration parameter, and first node does not confirm that whether the configuration parameter of Section Point is identical with the configuration parameter of first node.If it is first pre-conditioned that first node confirms that the configuration parameter of Section Point meets, first node confirms that whether the configuration parameter of Section Point is identical with the configuration parameter of first node.

It should be noted that, first node confirms that the configuration parameter of Section Point meets the first pre-conditioned method and is specially: confirm that the parameter type value of Section Point and the parameter type value of first node equate, wherein, parameter type value belongs to of configuration parameter.Be that the Type value of Section Point and the Type value of first node equate.Namely the Type value of the ectonexine in the concrete form of the parameter Unrecognized Parameter unconfirmed of the Type value of ectonexine in the concrete form of the parameter Unrecognized Parameter unconfirmed of the configuration parameter of first node and the configuration parameter of Section Point equates.

If the configuration parameter of Section Point is identical with the configuration parameter of first node, without carrying out following step, Section Point directly set up and first node between link.

S403, Section Point receive the link termination messages that first node sends.

If the configuration parameter of Section Point is not identical with the configuration parameter of first node, the configuration parameter of first node using the configuration parameter of Section Point as first node.After configuration parameter at first node using the configuration parameter of Section Point as first node, need to re-establish link.Before re-establishing link, set up the process of link before first will stopping, now Section Point receives the link termination messages that first node sends.

It should be noted that, in the embodiment of the present invention, Section Point receives the link termination messages that first node sends, to stop the link establishment of this first node and Section Point.Wherein, the link termination messages that Section Point receives is that first node is to send by ABORT/SHUTDOWN order, thereby stops the link establishment of this first node and Section Point.

S404, Section Point receive the second Initial message that first node sends.

At Section Point, receive after the link termination messages of first node transmission, re-establish link, Section Point receives the second Initial message that first node sends.Wherein, the second Initial message is the INIT message that client node sends to service end node, and the second Initial message is used to indicate the link of setting up between first node and Section Point.

S405, Section Point send the second initialization response message to first node.

Link between S406, Section Point foundation and first node.

At Section Point, receive after the second Initial message of first node transmission, Section Point sends the second initialization response message to first node, the link between Section Point foundation and first node.

The embodiment of the present invention provides a kind of client node 1, corresponding such scheme embodiment, and each functional unit of client node 1 all can, for said method step, as shown in Figure 8, comprise:

Sending module 10, for send the first Initial message to Section Point, wherein, the first Initial message is used to indicate the link of setting up between first node and Section Point.

Receiver module 11, the first initialization response message sending for receiving Section Point.

Link module 12, if carry the configuration parameter of the Section Point identical with the configuration parameter of first node for the first initialization response message, or, the first initialization response message carries the first sign, link between foundation and Section Point, wherein, the first sign is used to indicate first node according to the configuration parameter of first node, the link between foundation and Section Point.

Update module 13, if carry the configuration parameter of the Section Point different from the configuration parameter of first node, the configuration parameter using the configuration parameter of Section Point as first node for the first initialization response message.

Further, sending module 10, also, for sending link termination messages to Section Point, wherein, link termination messages is used to indicate the link of closing between current time first node and Section Point.

Sending module 10, also, for send the second Initial message to Section Point, wherein, the second Initial message is used to indicate the link of setting up between first node and Section Point.

Receiver module 11, the second initialization response message also sending for receiving Section Point, wherein, the second initialization response message is used to indicate the foundation of agreeing to link between first node and Section Point.

Link module 12, also for according to the configuration parameter of first node, set up and Section Point between link.

Further, as shown in Figure 9, client node 1 also comprises:

Confirm module 14, for confirming that the configuration parameter of Section Point meets first when pre-conditioned, judge that whether the configuration parameter of Section Point and the configuration parameter of first node be identical, wherein, first pre-conditionedly refers to that the parameter type value of Section Point and the parameter type value of first node equate, parameter type value belongs to of configuration parameter.

Further, configuration parameter belongs to of parameter Unrecognized Parameter unconfirmed that the first initialization response message carries.

Further, the first sign takies the highest two bits of the attribute block Chunk Flags that the first initialization response message carries.

Further, first node is client node, and Section Point is service end node.

Those skilled in the art can be well understood to, for convenience and simplicity of description, only with the division of above-mentioned each functional module, be illustrated, in practical application, can above-mentioned functions be distributed and by different functional modules, completed as required, the internal structure that is about to device is divided into different functional modules, to complete all or part of function described above.The system of foregoing description, the specific works process of device and unit, can, with reference to the corresponding process in preceding method embodiment, not repeat them here.

In addition, the each functional unit in each embodiment of the present invention can be integrated in a processing unit, can be also that the independent physics of unit exists, and also can be integrated in a unit two or more unit.Above-mentioned integrated unit both can adopt the form of hardware to realize, and also can adopt the form of SFU software functional unit to realize.

The embodiment of the present invention provides a kind of client node, comprise sending module, for sending the first Initial message to Section Point, wherein, the first Initial message is used to indicate the link of setting up between first node and Section Point, receiver module, the the first initialization response message sending for receiving Section Point, link module, if carry the configuration parameter of the Section Point identical with the configuration parameter of first node for the first initialization response message, or, the first initialization response message carries the first sign, link between foundation and Section Point, wherein, the first sign is used to indicate first node according to the configuration parameter of first node, link between foundation and Section Point, and update module, if carry the configuration parameter of the Section Point different from the configuration parameter of first node for the first initialization response message, configuration parameter using the configuration parameter of Section Point as first node.By this scheme, because first node can be by receiving the first initialization response message from the configuration parameter that carries Section Point of Section Point, the detection link failure duration of first node and Section Point is equated, solve the erroneous judgement to Link State that between first node and second section, point causes because link failure duration is inconsistent, improved the reliability of link.

The embodiment of the present invention provides a kind of service end node 2, corresponding such scheme embodiment, and each functional unit of service end node 2 all can, for said method step, as shown in figure 10, comprise:

Receiving element 20, the first Initial message sending for receiving first node, wherein, the first Initial message is used to indicate the link of setting up between first node and Section Point.

Transmitting element 21, for sending the first initialization response message to first node, wherein, the first initialization response message carries configuration parameter or first sign of Section Point, the first sign is used to indicate first node according to the configuration parameter of first node, the link between foundation and Section Point.

Link unit 22, for set up and first node between link.

Further, receiving element 20, the link termination messages also sending for receiving first node, wherein, link termination messages is used to indicate the link of closing between current time first node and Section Point.

Receiving element 20, the second Initial message also sending for receiving first node, wherein, the second Initial message is used to indicate the link of setting up between first node and Section Point;

Transmitting element 21, also for send the second initialization response message to first node, wherein, the second initialization response message is used to indicate the foundation of agreeing to link between first node and Section Point.

Further, configuration parameter belongs to of Unrecognized Parameter that the first initialization response message carries.

Further, first node is client node, and Section Point is service end node.

The embodiment of the present invention provides a kind of service end node, comprise receiving element, the first Initial message sending for receiving first node, wherein, the first Initial message is used to indicate the link of setting up between first node and Section Point, transmitting element, for sending the first initialization response message to first node, wherein, the first initialization response message carries configuration parameter or first sign of Section Point, the first sign is used to indicate first node according to the configuration parameter of first node, link between foundation and Section Point, and link unit, for set up and first node between link.By this scheme, because first node can be by receiving the first initialization response message from the configuration parameter that carries Section Point of Section Point, the detection link failure duration of first node and Section Point is equated, solve the erroneous judgement to Link State that between first node and second section, point causes because link failure duration is inconsistent, improved the reliability of link.

The embodiment of the present invention provides a kind of client terminal device 3, corresponding such scheme embodiment, and each functional unit of client terminal device 3 all can, for said method step, as shown in figure 11, comprise:

Transmitter 30, for send the first Initial message to Section Point, wherein, the first Initial message is used to indicate the link of setting up between first node and Section Point.

Receiver 31, the first initialization response message sending for receiving Section Point.

Processor 32, if carry the configuration parameter of the Section Point identical with the configuration parameter of first node for the first initialization response message, or, the first initialization response message carries the first sign, link between foundation and Section Point, wherein, the first sign is used to indicate first node according to the configuration parameter of first node, link between foundation and Section Point, if and the first initialization response message carries the configuration parameter of the Section Point different from the configuration parameter of first node, the configuration parameter using the configuration parameter of Section Point as first node.

Further, transmitter 30, also, for sending link termination messages to Section Point, wherein, link termination messages is used to indicate the link of closing between current time first node and Section Point.

Transmitter 30, also, for send the second Initial message to Section Point, wherein, the second Initial message is used to indicate the link of setting up between first node and Section Point.

Receiver 31, the second initialization response message also sending for receiving Section Point, wherein, the second initialization response message is used to indicate the foundation of agreeing to link between first node and Section Point.

Processor 32, also for according to the configuration parameter of first node, set up and Section Point between link.

Further, processor 32, also for confirming that the configuration parameter of Section Point meets first when pre-conditioned, judge that whether the configuration parameter of Section Point and the configuration parameter of first node be identical, wherein, first pre-conditionedly refers to that the parameter type value of Section Point and the parameter type value of first node equate, parameter type value belongs to of configuration parameter.

Further, first node is client node, and Section Point is service end node.

The embodiment of the present invention provides a kind of client terminal device, comprise transmitter, for sending the first Initial message to Section Point, wherein, the first Initial message is used to indicate the link of setting up between first node and Section Point, receiver, the the first initialization response message sending for receiving Section Point, and processor, if carry the configuration parameter of the Section Point identical with the configuration parameter of first node for the first initialization response message, or, the first initialization response message carries the first sign, link between foundation and Section Point, wherein, the first sign is used to indicate first node according to the configuration parameter of first node, link between foundation and Section Point, if and the first initialization response message carries the configuration parameter of the Section Point different from the configuration parameter of first node, configuration parameter using the configuration parameter of Section Point as first node.By this scheme, because first node can be by receiving the first initialization response message from the configuration parameter that carries Section Point of Section Point, the detection link failure duration of first node and Section Point is equated, solve the erroneous judgement to Link State that between first node and second section, point causes because link failure duration is inconsistent, improved the reliability of link.

The embodiment of the present invention provides a kind of service end device 4, corresponding such scheme embodiment, and each functional unit of service end device 4 all can, for said method step, as shown in figure 12, comprise:

Receiver 40, the first Initial message sending for receiving first node, wherein, the first Initial message is used to indicate the link of setting up between first node and Section Point.

Transmitter 41, for sending the first initialization response message to first node, wherein, the first initialization response message carries configuration parameter or first sign of Section Point, the first sign is used to indicate first node according to the configuration parameter of first node, the link between foundation and Section Point.

Processor 42, for set up and first node between link.

Further, receiver 40, the link termination messages also sending for receiving first node, wherein, link termination messages is used to indicate the link of closing between current time first node and Section Point.

Receiver 40, the second Initial message also sending for receiving first node, wherein, the second Initial message is used to indicate the link of setting up between first node and Section Point.

Transmitter 41, also for send the second initialization response message to first node, wherein, the second initialization response message is used to indicate the foundation of agreeing to link between first node and Section Point.

Further, configuration parameter belongs to that the first initialization response message carries

One of Unrecognized Parameter.

Further, first node is client node, and Section Point is service end node.

The embodiment of the present invention provides a kind of service end device, comprise receiver, the first Initial message sending for receiving first node, wherein, the first Initial message is used to indicate the link of setting up between first node and Section Point, transmitter, for sending the first initialization response message to first node, wherein, the first initialization response message carries configuration parameter or first sign of Section Point, the first sign is used to indicate first node according to the configuration parameter of first node, link between foundation and Section Point, and processor, for set up and first node between link.By this scheme, because first node can be by receiving the first initialization response message from the configuration parameter that carries Section Point of Section Point, the detection link failure duration of first node and Section Point is equated, solve the erroneous judgement to Link State that between first node and second section, point causes because link failure duration is inconsistent, improved the reliability of link.

Subscriber equipment described in the embodiment of the present invention, can be that wireless terminal can be also catv terminal, wireless terminal can be to point to user to provide the equipment of voice and/or data connectivity, has the portable equipment of wireless connecting function or is connected to other treatment facilities of radio modem.Wireless terminal can be through wireless access network (for example, RAN, Radio Access Network) communicate with one or more core net, wireless terminal can be mobile terminal, as mobile phone (or being called " honeycomb " phone) with there is the computer of mobile terminal, for example, can be portable, pocket, hand-hold type, mobile device built-in computer or vehicle-mounted, they and wireless access network exchange language and/or data; Base station can refer in Access Network aloft on interface by the equipment of one or more sectors and wireless terminal communications.For example, base station can be the base station (BTS in GSM or CDMA, Base Transceiver Station), also can be the base station (NodeB) in WCDMA, can also be evolved base station (NodeB or eNB or the e-NodeB in LTE, evolutional Node B), the present invention does not limit.

The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, any be familiar with those skilled in the art the present invention disclose technical scope in; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection range of claim.

Claims

1. a method of setting up link, is characterized in that, comprising:

2. the method for setting up link according to claim 1, is characterized in that, after the configuration parameter at described first node using the configuration parameter of described Section Point as described first node, described method also comprises:

3. the method for setting up link according to claim 1, is characterized in that, described method also comprises:

4. according to the method for setting up link described in any one in claim 1-3, it is characterized in that, described configuration parameter belongs to of parameter Unrecognized Parameter unconfirmed that described the first initialization response message carries.

5. according to the method for setting up link described in any one in claim 1-4, it is characterized in that, described the first sign takies the highest two bits of the attribute block Chunk Flags that described the first initialization response message carries.

6. according to the method for setting up link described in any one in claim 1-5, it is characterized in that, described first node is client node, and described Section Point is service end node.

7. a method of setting up link, is characterized in that, comprising:

Link between described Section Point foundation and described first node.

8. the method for setting up link according to claim 7, is characterized in that, before the link between described Section Point foundation and described first node, described method also comprises:

9. according to the method for setting up link described in claim 7 or 8, it is characterized in that, described configuration parameter belongs to of Unrecognized Parameter that described the first initialization response message carries.

10. according to the method for setting up link described in any one in claim 7-9, it is characterized in that, described the first sign takies the highest two bits of the attribute block Chunk Flags that described the first initialization response message carries.

11. set up the method for link according to any one of claims of claim 7-10, it is characterized in that, described first node is client node, and described Section Point is service end node.

12. 1 kinds of client nodes, is characterized in that, comprising:

13. client nodes according to claim 12, is characterized in that,

14. client nodes according to claim 12, is characterized in that, described client node also comprises:

15. according to the client node described in any one in claim 12-14, it is characterized in that, described configuration parameter belongs to of parameter Unrecognized Parameter unconfirmed that described the first initialization response message carries.

16. according to the client node described in any one in claim 12-15, it is characterized in that, described the first sign takies the highest two bits of the attribute block Chunk Flags that described the first initialization response message carries.

17. according to the client node described in any one in claim 12-16, it is characterized in that, described first node is client node, and described Section Point is service end node.

18. 1 kinds of service end nodes, is characterized in that, comprising:

Link unit, for set up and described first node between link.

19. service end nodes according to claim 18, is characterized in that,

20. according to the service end node described in claim 18 or 19, it is characterized in that, described configuration parameter belongs to of Unrecognized Parameter that described the first initialization response message carries.

21. according to the service end node described in any one in claim 18-20, it is characterized in that, described the first sign takies the highest two bits of the attribute block Chunk Flags that described the first initialization response message carries.

22. according to the service end node described in any one in claim 18-21, it is characterized in that, described first node is client node, and described Section Point is service end node.

23. 1 kinds of client terminal devices, is characterized in that, comprising:

24. client terminal devices according to claim 23, is characterized in that,

25. client terminal devices according to claim 23, is characterized in that,

26. according to the client terminal device described in any one in claim 23-25, it is characterized in that, described configuration parameter belongs to of parameter Unrecognized Parameter unconfirmed that described the first initialization response message carries.

27. according to the client terminal device described in any one in claim 23-26, it is characterized in that, described the first sign takies the highest two bits of the attribute block Chunk Flags that described the first initialization response message carries.

28. according to the client terminal device described in any one in claim 23-27, it is characterized in that, described first node is client node, and described Section Point is service end node.

29. 1 kinds of service end devices, is characterized in that, comprising:

Processor, for set up and described first node between link.

30. service end devices according to claim 29, is characterized in that,

31. according to the service end device described in claim 29 or 30, it is characterized in that, described configuration parameter belongs to of Unrecognized Parameter that described the first initialization response message carries.

32. according to the service end device described in any one in claim 29-31, it is characterized in that, described the first sign takies the highest two bits of the attribute block Chunk Flags that described the first initialization response message carries.

33. according to the service end device described in any one in claim 29-32, it is characterized in that, described first node is client node, and described Section Point is service end node.