WO2017049987A1 - 一种异常处理的方法及装置 - Google Patents

一种异常处理的方法及装置 Download PDF

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WO2017049987A1
WO2017049987A1 PCT/CN2016/088606 CN2016088606W WO2017049987A1 WO 2017049987 A1 WO2017049987 A1 WO 2017049987A1 CN 2016088606 W CN2016088606 W CN 2016088606W WO 2017049987 A1 WO2017049987 A1 WO 2017049987A1
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pce
lsp
pcc
actively
create
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PCT/CN2016/088606
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English (en)
French (fr)
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刘志辉
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中兴通讯股份有限公司
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Publication of WO2017049987A1 publication Critical patent/WO2017049987A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery

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  • This document relates to, but is not limited to, the field of data network communication, and in particular to a method and apparatus for exception handling.
  • the standard numbered RFC5440 indicates that the Path Computation Element (PCE) is a new computing technology, which means that one or several devices with path functions are deployed in a network domain. Count the road.
  • the Path Computation Clients (PCCs) reside on the devices that need to calculate the path, and are used to send the calculation request message and process the calculation result.
  • the communication between the PCC and the PCE uses the PCE communication protocol (PCE communication protocol).
  • the stateful PCE is the state in which the PCC and the PCE exchange the label switching path (LSP) in real time. After the PCE saves the LSP state, it can optimize the calculation result and modify the existing LSP attributes and paths.
  • LSP label switching path
  • the PCE actively negotiates the LSP capability by using the I-bit (bit) bit of the stateful PCE capability code value (Type, Length, Value, or TLV).
  • the PCE can actively create an LSP message to the PCC as needed.
  • the Path Computation LSP Initiate (PCInitiate) message actively triggers the establishment of a tunnel.
  • the need to include an application needs to create a new tunnel with specific constraints, or the existing tunnel bandwidth is not enough to create a new tunnel for load sharing and so on.
  • the PCC does not always support the PCE to actively create LSPs. In some cases, the PCC does not support the PCE to actively create LSPs. For example, if the PCC is not configured to support the PCE to actively create LSPs, the configuration fails, or the device does not support PCE at all. If the PCInitiate message is received, the PCC side will be abnormal. If the exception is not processed, the PCE will discard the message. The default LSP is created. In this case, if a packet is transmitted on the LSP, the packet will be lost.
  • the PCC side does not support the PCE side to actively create LSP capability but receives
  • the problem of handling the abnormal situation of actively creating an LSP request message has not yet proposed an effective solution.
  • the embodiment of the present invention provides a method and an apparatus for processing an exception, which can process an abnormal situation that the PCC side does not support the initiative to create an LSP but the LSP request message is actively generated.
  • a method for exception processing comprising:
  • the PCC feeds back to the PCE a response message rejecting the PCE to actively create the LSP.
  • the exception processing method further includes: after the PCC feeds back the response message that the PCE actively creates the LSP message to the PCE,
  • the PCC disconnects from the PCE.
  • the method further includes: before the PCC feeds back, to the PCE, the response message that the PCE actively creates an LSP,
  • the PCC receives the request message for actively creating an LSP sent by the PCE.
  • the exception processing method further includes: before the PCC receives the request message for actively creating the LSP sent by the PCE,
  • the foregoing response message carries an error code.
  • a method for exception processing is provided.
  • the PCE receives a response message from the PCC that rejects the PCE to actively create an LSP message.
  • the method also includes:
  • the PCE sends a request message for actively creating an LSP to the PCC.
  • the response message carries an error code.
  • an apparatus for exception processing includes a feedback module, configured to feedback to the PCE to reject the PCE initiative creation if the PCC does not support the PCE to actively create an LSP capability.
  • the response message of the LSP message is provided, where the apparatus includes a feedback module, configured to feedback to the PCE to reject the PCE initiative creation if the PCC does not support the PCE to actively create an LSP capability.
  • the exception handling device further includes a disconnect module configured to disconnect the PCC from the PCE.
  • the exception handling device further includes a negotiation module, configured to negotiate whether the PCC supports the PCE to actively create an LSP.
  • the device is applied to a computing client, and the device further includes a receiving module.
  • the receiving module is configured to receive a request message for actively creating an LSP sent by the PCE.
  • an apparatus for exception processing is provided.
  • the receiving feedback module is configured to receive a response message that the PCC feeds back the PCE to actively create an LSP message if the PCC does not support the PCE to actively create the LSP capability. .
  • the device is applied to a PCE, and the device further includes a sending module,
  • the sending module is configured to send a request message for actively creating an LSP to the PCC.
  • the PCC when the PCC does not support the PCE to actively create an LSP, the PCC feeds back to the PCE a response message rejecting the PCE to actively create an LSP message.
  • the processing of the abnormal situation that the PCC does not support the PCE to actively create an LSP but receives the initiative to create an LSP request message is implemented, which reduces the probability of a packet loss accident.
  • FIG. 1 is a first flowchart of a method for exception handling according to an embodiment of the present invention
  • FIG. 3 is a structural block diagram 1 of an apparatus for exception processing according to an embodiment of the present invention.
  • FIG. 4 is a structural block diagram 1 of an apparatus for exception processing according to an alternative embodiment of the present invention.
  • FIG. 5 is a structural block diagram 2 of an apparatus for exception processing according to an alternative embodiment of the present invention.
  • FIG. 6 is a structural block diagram 2 of an apparatus for abnormal processing according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of an exception processing method in a case where a PCC does not host an active LSP establishment according to an embodiment of the present invention.
  • FIG. 1 is a flowchart 1 of a method for exception processing according to an embodiment of the present invention. As shown in FIG. 1, the flow includes:
  • Step 104 In the case that the PCC does not support the PCE to actively create an LSP, the PCC feedback rejects the response message that the PCE actively creates an LSP message.
  • the PCC when the PCC does not have the capability to support the PCE to actively create an LSP, the PCC receives a processing method for the PCE to actively create an LSP request message.
  • step 104 the embodiment of the present invention further includes step 102:
  • Step 102 The PCC receives an initiative to create an LSP request message sent by the PCE.
  • the PCC performs capability negotiation with the PCE, and the PCC side establishes a session with the PCE. That is, the method of the embodiment of the present invention includes: negotiating whether the PCC supports the PCE to actively create an LSP.
  • the PCC has the capability of supporting the PCE to actively create an LSP. If the negotiation is unsuccessful, the PCC does not have the capability to support the PCE to actively create an LSP.
  • the capability negotiation includes whether the PCE actively creates the LSP capability.
  • the PCC negotiates the PCE to actively create the LSP capability through the I bit setting of the stateful PCE capability TLV. When the I bit is set to 1, the PCC local setting is 1. The negotiation was successful. When the I bit bit of the stateful PCE capability TLV is set to 1 and the PCC is locally set to 0, the negotiation is unsuccessful.
  • the active creation LSP request message sent by the PCE may include a PCInitiate message.
  • the PCC in the case that the PCC does not support the PCE to actively create an LSP, the PCC feedback rejects the PCE to actively create an LSP message, and the response message includes an error code.
  • the error code can contain error codes Error message (also known as PCErr message).
  • the error code can be (19, 11), that is, the error type is 19, which means invalid operation, and the error value is 11, especially if the PCE attempts to actively create an LSP without triggering the PCE to actively create an LSP. Anomalous situation. It should be pointed out that the error type 19 and the error value 11 can be replaced by other values, which are not fixed.
  • the problem that the PCC side does not support the PCE initiative to create the LSP but receives the PCInitiate message is not solved in the related art.
  • the PCC side does not support the PCE side to actively create the LSP but receives the initiative.
  • the processing of the abnormal situation of creating an LSP request message reduces the probability of occurrence of a packet loss failure.
  • the PCC feeds back to the PCE, and after the PCE actively creates a response message of the LSP message, disconnects the session with the PCE, improves resource utilization, and avoids the PCC side device.
  • the impact of processing performance and the consumption of link bandwidth is not limited.
  • the embodiment of the invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the abnormal processing method.
  • FIG. 2 is a second flowchart of a method for exception processing according to an embodiment of the present invention. As shown in FIG. 2, the process includes:
  • Step (S) 204 In the case that the PCC does not support the PCE to actively create an LSP, the PCE receives a response message from the PCC that rejects the PCE to actively create an LSP message.
  • the embodiment of the present invention further includes step 202:
  • the PCE sends an active LSP request message to the PCC.
  • the response message that the PCE receives the PCC feedback and rejects the PCE initiative to create the LSP message includes an error code.
  • the response message is a PCErr message containing an error code.
  • the embodiment of the invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the abnormal processing method.
  • FIG. 3 is a structural block diagram 1 of an apparatus for exception processing according to an embodiment of the present invention. As shown in FIG. 3, the apparatus includes:
  • the feedback module 34 is configured to feed back, to the PCE, a response message rejecting the PCE to actively create an LSP, if the PCC does not support the active LSP capability.
  • the device of the embodiment of the present invention when the device of the embodiment of the present invention is applied to the computing client, the device of the embodiment of the present invention further includes
  • the receiving module 32 is configured to receive an active LSP request message sent by the PCE.
  • the apparatus for abnormal processing in the embodiment of the present invention may be applied to an algorithm client (PCC), or communicated with a PCC, or operated as a stand-alone device.
  • PCC algorithm client
  • FIG. 4 is a structural block diagram of an apparatus for exception processing according to an alternative embodiment of the present invention. As shown in FIG. 4, the apparatus further includes:
  • the disconnect module 42 is set to disconnect the PCC from the PCE.
  • FIG. 5 is a structural block diagram 2 of an apparatus for processing an exception according to an alternative embodiment of the present invention. As shown in FIG. 5, the apparatus for processing the exception further includes:
  • the negotiation module 52 is configured to negotiate whether the PCC supports the PCE to actively create an LSP.
  • FIG. 6 is a structural block diagram 2 of an apparatus for abnormal processing according to an embodiment of the present invention. As shown in FIG. 6, the apparatus includes:
  • the receiving feedback module 64 is configured to receive a response message from the PCC that rejects the PCE to actively create an LSP message if the PCC does not support the PCE to actively create an LSP.
  • the device of the embodiment of the present invention when the device of the embodiment of the present invention is applied to the PCE, the device of the embodiment of the present invention further includes:
  • the sending module 62 is configured to send a request message for actively creating an LSP to the PCC.
  • the device for abnormal processing in the embodiment of the present invention may be applied to the PCE, or connected to the PCE, or operated as a separate device.
  • FIG. 7 is a schematic diagram of an exception processing method in a case where a PCC does not host an active LSP establishment according to an embodiment of the present invention. As shown in FIG. 7, the method includes the following steps:
  • Step 702 The PCEP session is established, and the PCE side sends an initiative to create an LSP request message.
  • the initiative to create an LSP request message may include a PCInitiate message.
  • Step 704 The message check is abnormal: the PCC side does not support the PCE to actively create an LSP capability.
  • Step 706 The feedback rejects the response message that the PCE actively creates the LSP; for example, sends an error message (19, 11);
  • Step 708 Perform message processing on the response message.
  • Step 710 The PCC side disconnects the session on the PCE side according to the response message.
  • step 712 the PCE side disconnects the session.
  • each module/unit in the foregoing embodiment may be implemented in the form of hardware, for example, by implementing an integrated circuit to implement its corresponding function, or may be implemented in the form of a software function module, for example, being executed by a processor and stored in a memory. Programs/instructions to implement their respective functions.
  • the invention is not limited to any specific form of combination of hardware and software.
  • the foregoing technical solution implements the processing of the abnormal situation that the PCC side does not support the PCE to actively create an LSP but receives the initiative to create an LSP request message, which reduces the probability of occurrence of a packet loss event.

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Abstract

一种异常处理的方法及装置，包括：在算路客户端(PCC)不支持路径计算单元(PCE)主动创建标记交换路径(LSP)能力的情况下，PCC向PCE反馈拒绝PCE主动创建LSP的响应消息。通过本发明实施例，实现了对PCC侧不支持PCE侧主动创建LSP但接收到主动创建LSP请求消息这一异常情况的处理，降低了报文丢失事故的发生几率。

Description

一种异常处理的方法及装置 技术领域
本文涉及但不限于数据网络通信领域，尤其涉及异常处理的方法及装置。
背景技术
编号为RFC5440的标准指明路径计算单元(Path Computation Element，简称为PCE)是一种新的算路技术，意指在一个网络域中部署一台或几台有算路功能的设备，专门用于算路。算路客户端(Path Computation Clients，简称PCC)驻留在需要算路的设备，用于发送算路请求消息和处理算路结果。PCC与PCE之间的通信采用的是PCE通讯协议(PCE communication Protocol，简称为PCEP协议)。
根据draft-ietf-pce-stateful-pce-11的规定，有状态PCE是指PCC和PCE通过报文交互，实时同步标记交换路径(Label Switching Path，简称为LSP)状态。PCE保存LSP状态后，可以优化算路结果，并对已有LSP属性和路径等信息进行适当的修改。
在PCEP会话初始阶段，通过有状态PCE能力编码值(Type，Length，Value，简称为TLV)的I比特(bit)位协商PCE主动创建LSP能力，PCE可以根据需要给PCC发主动创建LSP消息(Path Computation LSP Initiate，简称为PCInitiate)消息，主动触发建立一条隧道。该需要包括一个应用需要新建一条具有特定约束的隧道，或者现有隧道带宽不够需要新建一条隧道进行负荷分担等等。
然而，PCC并非总能支持PCE主动创建LSP能力，在某些时候PCC不支持PCE主动创建LSP能力(如：如果PCC没有配置支持PCE主动创建LSP能力、配置失败、或者这个设备根本就不支持PCE主动创建LSP能力)，PCC侧收到PCInitiate消息会出现异常。这种异常如不处理，直接丢弃此消息PCE将默认LSP创建成功，在这种情况下，如果有报文在该LSP上传输将导致报文丢失的重大故障。
针对相关技术中没有对PCC侧不支持PCE侧主动创建LSP能力但接收 到主动创建LSP请求消息这一异常情况处理的问题，相关技术还未提出有效的解决方案。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本发明实施例提供了异常处理的方法及装置，能够对PCC侧不支持PCE侧主动创建LSP能力但接收到主动创建LSP请求消息的异常情况进行处理。
根据本发明实施例的一个方面，提供一种异常处理的方法，所述方法包括：
在算路客户端PCC不支持路径计算单元PCE主动创建标记交换路径LSP的情况下，PCC向PCE反馈拒绝PCE主动创建LSP的响应消息。
可选的，该异常处理方法还包括PCC向PCE反馈拒绝PCE主动创建LSP消息的响应消息之后，
该PCC断开与该PCE的会话。
可选的，所述方法还包括：所述PCC向所述PCE反馈拒绝所述PCE主动创建LSP的响应消息之前，
PCC接收PCE发送的主动创建LSP的请求消息。
可选的，该异常处理方法还包括：PCC接收PCE发送的主动创建LSP的请求消息之前，
对该PCC是否支持该PCE主动创建LSP能力进行协商。
可选的，上述响应消息中携带有错误码。
根据本发明实施例的另一方面，提供一种异常处理的方法，在PCC不支持PCE主动创建LSP能力的情况下，PCE接收PCC反馈的拒绝PCE主动创建LSP消息的响应消息。
可选的，该方法之前还包括：
PCE向PCC发送主动创建LSP的请求消息。
可选的，所述响应消息中携带有错误码。
根据本发明实施例的另一方面，提供一种异常处理的装置，所述装置包括反馈模块，设置为在该PCC不支持PCE主动创建LSP能力的情况下，向该PCE反馈拒绝该PCE主动创建LSP消息的响应消息。
可选的，该异常处理装置还包括断开模块，设置为断开PCC与该PCE的会话。
可选的，该异常处理装置还包括协商模块，设置为对该PCC是否支持PCE主动创建LSP能力进行协商。
可选的，所述装置应用于算路客户端，所述装置还包括接收模块，
接收模块设置为，接收PCE发送的主动创建LSP的请求消息。
根据本发明实施例的另一方面，提供一种异常处理的装置，接收反馈模块，设置为在PCC不支持PCE主动创建LSP能力的情况下，接收PCC反馈的拒绝PCE主动创建LSP消息的响应消息。
可选的，所述装置应用于PCE，所述装置还包括发送模块，
发送模块，设置为向PCC发送主动创建LSP的请求消息。
通过本发明实施例，采用在PCC不支持该PCE主动创建LSP能力的情况下，该PCC向该PCE反馈拒绝该PCE主动创建LSP消息的响应消息。实现了对PCC侧不支持PCE主动创建LSP能力但接收到主动创建LSP请求消息这一异常情况的处理，降低了报文丢失事故的发生几率。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图概述
图1是本发明实施例的异常处理的方法的流程图一；
图2是本发明实施例的异常处理的方法的流程图二；
图3是本发明实施例的异常处理的装置的结构框图一；
图4是本发明可选实施例的异常处理的装置的结构框图一；
图5是本发明可选实施例的异常处理的装置的结构框图二；
图6是本发明实施例异常处理的装置的结构框图二；
图7是本发明实施例的在PCC不主持主动创建LSP的情况下的异常处理方法的示意图。
本发明的实施方式
下文中将结合附图对本申请的实施例进行详细说明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互任意组合。
在本实施例中提供了一种异常处理方法及装置，图1是本发明实施例的异常处理的方法的流程图一，如图1所示，该流程包括：
步骤104，在PCC不支持PCE主动创建LSP能力的情况下，PCC反馈拒绝PCE主动创建LSP消息的响应消息。
需要说明的是，本发明实施例中异常包括当PCC没有能力支持PCE主动创建LSP的情况下，该PCC接收到PCE主动创建LSP请求消息的处理方法。
可选的，步骤104之前，本发明实施例还包括步骤102：
步骤102，PCC接收PCE发送的主动创建LSP请求消息；
可选地，PCC与PCE进行能力协商，PCC侧建立与PCE会话。即本发明实施例方法包括：对PCC是否支持所述PCE主动创建LSP进行协商。可选的，可以包括，协商成功则PCC具备支持PCE主动创建LSP的能力，协商不成功则PCC不具备支持PCE主动创建LSP的能力。能力协商包括协商是否支持PCE主动创建LSP能力，例如：PCC通过有状态PCE能力TLV的I bit位设置来协商PCE主动创建LSP能力，当I bit位设置为1时，PCC本地设置值为1，协商成功。当有状态PCE能力TLV的I bit位设置为1，PCC本地设置为0，则协商不成功。
需要指出的是，PCE发送的主动创建LSP请求消息可以包括PCInitiate消息。
可选的，在PCC不支持PCE主动创建LSP的情况下，PCC反馈拒绝PCE主动创建LSP消息的响应消息中包含有错误码。可选的，可以包含有错误码 的错误消息(又称PCErr消息)。可选的，错误码可以为(19,11)，即错误类型为19，意指无效操作，错误值为11，特指在不支持PCE主动创建LSP能力的情况下PCE试图主动创建LSP会引发的异常情形。需要指出的是，错误类型19以及错误值11可以用其他值来替代，并非固定的。
通过上述步骤，解决了相关技术中没有对PCC侧不支持PCE主动创建LSP能力但收到PCInitiate消息这一异常情况进行处理的问题，实现了对PCC侧不支持PCE侧主动创建LSP但接收到主动创建LSP请求消息这一异常情况的处理，降低丢包故障的发生几率。
可选的，本发明实施例异常处理的方法中，PCC向PCE反馈拒绝，PCE主动创建LSP消息的响应消息后，断开与PCE的会话，提高了资源利用率，避免了对PCC侧设备的处理性能的影响、和对链路带宽的消耗。
本发明实施例还提供一种计算机存储介质，计算机存储介质中存储有计算机可执行指令，计算机可执行指令用于执行上述的异常处理的方法。
图2是本发明实施例的异常处理的方法的流程图二，如图2所示，该流程包括：
步骤(S)204，在PCC不支持PCE主动创建LSP能力的情况下，PCE接收PCC反馈的拒绝PCE主动创建LSP消息的响应消息。
可选的，S204之前，本发明实施例还包括步骤202：
S202，PCE向PCC发送主动创建LSP请求消息。
可选的，在PCC不支持PCE主动创建LSP能力的情况下，PCE接收PCC反馈的拒绝PCE主动创建LSP消息的响应消息中包含有错误码。可选地，响应消息为包含有错误码的PCErr消息。
本发明实施例还提供一种计算机存储介质，计算机存储介质中存储有计算机可执行指令，计算机可执行指令用于执行上述的异常处理的方法。
图3是本发明实施例的异常处理的装置的结构框图一，如图3所示，该装置包括：
反馈模块34，设置为在PCC不支持主动创建LSP能力的情况下向PCE反馈拒绝PCE主动创建LSP的响应消息。
可选的，本发明实施例装置应用于算路客户端时，本发明实施例装置还包括，
接收模块32，设置为接收PCE发送的主动创建LSP请求消息。
需要说明的是，本发明实施例异常处理的装置可以应用于算法客户端(PCC)，或者与PCC通信连接，或者作为独立的装置运行。
图4是本发明可选实施例的异常处理的装置的结构框图一，如图4所示，该装置还包括：
断开模块42，设置为断开PCC与PCE的会话。
图5是本发明可选实施例的异常处理的装置的结构框图二，如图5所示，该异常处理的装置还包括：
协商模块52，设置为对PCC是否支持PCE主动创建LSP能力进行协商。
图6是本发明实施例异常处理的装置的结构框图二，如图6所示，该装置包括：
接收反馈模块64，设置为在PCC不支持PCE主动创建LSP的情况下，接收PCC反馈的拒绝PCE主动创建LSP消息的响应消息。
可选的，本发明实施例装置应用于PCE时，本发明实施例装置还包括：
发送模块62，设置为向PCC发送主动创建LSP的请求消息。
需要说明的是，本发明实施例异常处理的装置可以应用于PCE，或者与PCE通信连接，或者作为独立的装置运行。
下面结合可选实施例对本发明进行进一步说明。
图7是本发明实施例的在PCC不主持主动创建LSP的情况下的异常处理方法的示意图，如图7所示，该方法包括以下步骤：
步骤702，PCEP会话建立，PCE侧发送主动创建LSP请求消息；主动创建LSP请求消息可以包括PCInitiate消息；
步骤704，消息检查异常：PCC侧不支持PCE主动创建LSP能力；
步骤706，反馈拒绝PCE主动创建LSP的响应消息；例如、发送error消息(19,11)；
步骤708，对响应消息进行消息处理；
步骤710，根据响应消息，PCC侧断开PCE侧的会话；
步骤712，PCE侧断开会话。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序来指令相关硬件(例如处理器)完成，所述程序可以存储于计算机可读存储介质中，如只读存储器、磁盘或光盘等。可选地，上述实施例的全部或部分步骤也可以使用一个或多个集成电路来实现。相应地，上述实施例中的每个模块/单元可以采用硬件的形式实现，例如通过集成电路来实现其相应功能，也可以采用软件功能模块的形式实现，例如通过处理器执行存储于存储器中的程序/指令来实现其相应功能。本发明不限制于任何特定形式的硬件和软件的结合。
虽然本申请所揭露的实施方式如上，但所述的内容仅为便于理解本申请而采用的实施方式，并非用以限定本申请，如本发明实施方式中的具体的实现方法。任何本申请所属领域内的技术人员，在不脱离本申请所揭露的精神和范围的前提下，可以在实施的形式及细节上进行任何的修改与变化，但本申请的专利保护范围，仍须以所附的权利要求书所界定的范围为准。
工业实用性
上述技术方案实现了对PCC侧不支持PCE侧主动创建LSP但接收到主动创建LSP请求消息这一异常情况的处理，降低了报文丢失事故的发生几率。

Claims (14)

  1. 一种异常处理的方法，所述方法包括：
    在算路客户端PCC不支持路径计算单元PCE主动创建标记交换路径LSP的情况下，PCC向PCE反馈拒绝PCE主动创建LSP的响应消息。
  2. 根据权利要求1所述的方法，所述方法还包括：所述PCC向所述PCE反馈拒绝所述PCE主动创建LSP的响应消息之后，
    所述PCC断开与所述PCE的会话。
  3. 根据权利要求1所述的方法，所述方法还包括：所述PCC向所述PCE反馈拒绝所述PCE主动创建LSP的响应消息之前，
    PCC接收PCE发送的主动创建LSP的请求消息。
  4. 根据权利要求3所述的方法，所述方法还包括：在所述PCC接收所述PCE发送的主动创建LSP的请求消息之前，
    对所述PCC是否支持所述PCE主动创建LSP进行协商。
  5. 根据权利要求1至4中任一项所述的方法，其中，所述响应消息中携带有错误码。
  6. 一种异常处理的方法，所述方法包括：
    在算路客户端PCC不支持路径计算单元PCE主动创建标记交换路径LSP的情况下，PCE接收PCC反馈的拒绝PCE主动创建LSP的响应消息。
  7. 根据权利要求6所述的方法，所述方法之前还包括：
    PCE向PCC发送主动创建LSP的请求消息。
  8. 根据权利要求6或7所述的方法，其中，所述响应消息中携带有错误码。
  9. 一种异常处理的装置，所述装置包括：
    反馈模块，设置为算路客户端PCC不支持路径计算单元PCE主动创建标记交换路径LSP的情况下，向PCE反馈拒绝PCE主动创建LSP的响应消息。
  10. 根据权利要求9所述的装置，所述装置还包括：
    断开模块，设置为断开PCC与所述PCE的会话。
  11. 根据权利要求9所述的装置，所述装置还包括：
    协商模块，设置为对所述PCC是否支持PCE主动创建LSP进行协商。
  12. 根据权利要求9～11任一项所述的装置，所述装置应用于算路客户端，所述装置还包括接收模块，
    接收模块设置为，接收PCE发送的主动创建LSP的请求消息。
  13. 一种异常处理的装置，所述装置包括：
    接收反馈模块，设置为在算路客户端PCC不支持路径计算单元PCE主动创建标记交换路径LSP的情况下，接收PCC反馈的拒绝PCE主动创建LSP的响应消息。
  14. 根据权利要求13所述的装置，所述装置应用于PCE，所述装置还包括发送模块，
    发送模块，设置为向PCC发送主动创建LSP的请求消息。
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