WO2016184012A1 - 一种优先收发hello报文的方法及路由设备 - Google Patents

一种优先收发hello报文的方法及路由设备 Download PDF

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Publication number
WO2016184012A1
WO2016184012A1 PCT/CN2015/091484 CN2015091484W WO2016184012A1 WO 2016184012 A1 WO2016184012 A1 WO 2016184012A1 CN 2015091484 W CN2015091484 W CN 2015091484W WO 2016184012 A1 WO2016184012 A1 WO 2016184012A1
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packet
queue
priority
sending
receiving
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PCT/CN2015/091484
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English (en)
French (fr)
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何建军
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中兴通讯股份有限公司
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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
    • H04L45/02—Topology update or discovery
    • H04L45/026—Details of "hello" or keep-alive messages
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/50—Queue scheduling

Definitions

  • the present invention relates to communication technologies, and in particular, to a method and a routing device for preferentially transmitting and receiving HELLO messages.
  • HELLO packet mechanism such as Border Gateway Protocol (BGP) in the routing protocol, Open Shortest Path First (OSPF), and an intermediate system.
  • BGP Border Gateway Protocol
  • OSPF Open Shortest Path First
  • IS-IS Intermediate System-to-Intermediate System
  • the HELLO message carries the local related attribute information, and the two parties find the other party by sending a HELLO message, and when the HELLO message sent by the peer end is received, the validity check of the HELLO message is performed, and if the parameters match, In this case, the terminal records the neighbor relationship of the HELLO packet sender.
  • the neighbors will negotiate to stipulate that if the HELLO packet sent by the neighboring party is not received within a certain interval, the neighbor relationship is deleted.
  • the neighbor information is also deleted.
  • the neighbors will exchange other types of packets to exchange information between the two parties.
  • the HELLO packets need to be sent periodically to notify the neighbors of the local end.
  • the HELLO message and other messages of the protocol are processed with the same priority, so that the processor may be very busy and does not receive or send HELLO messages in time.
  • the HELLO message deletes the neighbor relationship and invalidates all the information advertised by the neighbor, which may affect the routing table. As shown in Figure 1, Router 1 and Router 2 negotiate four HELLO messages. If the HELLO message sent by the other party is not received within the interval, the peer will be deleted.
  • the router 1 receives the routing information advertised by the router 2, and the router 2 does not send a HELLO message in the four HELLO message intervals due to the busyness of the local processor. Then, according to the previously negotiated agreement, the router 1 deletes the neighbor of the router 2, It also deletes the routing information previously advertised by Router 2, which in turn affects the local routing forwarding table.
  • an embodiment of the present invention provides a method and a routing device for preferentially transmitting and receiving HELLO messages.
  • the packet When the packet is sent, it is detected whether the packet is a HELLO packet.
  • the sending request of the packet is added to the priority sending queue; when the packet is not a HELLO packet, the sending request of the packet is added to the normal sending queue;
  • the transmission request in the priority transmission queue is processed; when there is no transmission request in the priority transmission queue, the transmission request in the normal transmission queue is processed.
  • the method further includes:
  • the processing of the sending request in the priority sending queue includes: sending a packet corresponding to each sending request in the priority sending queue;
  • the processing of the sending request in the normal sending queue includes: placing each of the ordinary sending queues The packets corresponding to the sending request are sent out.
  • the packet When the packet is a HELLO packet, the packet is added to the priority receiving queue; when the packet is not a HELLO packet, the packet is added to the normal receiving queue;
  • the packet in the priority receiving queue is processed.
  • the packet in the normal receiving queue is processed.
  • the method further includes:
  • the processing of the packet in the priority receiving queue includes: sending each packet in the priority receiving queue to the corresponding service module for processing;
  • the processing of the sending request in the normal sending queue includes: sending each packet in the normal receiving queue to the corresponding service module for processing.
  • the first detecting unit is configured to detect, when the packet is sent, whether the packet is a HELLO packet
  • a priority sending unit configured to add a sending request of the packet to the priority sending queue when the packet is a HELLO packet
  • the normal sending unit is configured to add the sending request of the packet to the normal sending queue when the packet is not a HELLO packet;
  • the processing unit is configured to process the priority sending team when there is a sending request in the priority sending queue.
  • the routing device further includes:
  • a second detecting unit configured to detect whether a new sending request is added in the priority sending queue when processing the sending request in the normal sending queue
  • the processing unit is further configured to, when detecting that a new transmission request is added to the priority transmission queue, interrupt processing of the transmission request in the normal transmission queue, and process the transmission request in the priority transmission queue.
  • the processing unit includes:
  • the priority processing sub-unit is configured to send the packet corresponding to each sending request in the priority sending queue
  • the normal processing subunit is configured to send a packet corresponding to each sending request in the normal sending queue.
  • the first detecting unit is configured to: when receiving the packet, detecting whether the packet is a HELLO packet;
  • a priority receiving unit configured to add the packet to the priority receiving queue when the packet is a HELLO packet
  • the normal receiving unit is configured to add the packet to the normal receiving queue when the packet is not a HELLO packet;
  • the processing unit is configured to process the packet in the priority receiving queue when there is a packet in the priority receiving queue, and to process the packet in the normal receiving queue when there is no packet in the priority receiving queue.
  • the routing device further includes:
  • the second detecting unit is configured to detect the priority when processing the packet in the normal receiving queue Whether new packets are added to the queue;
  • the processing unit is further configured to: when detecting that a new packet is added to the priority receiving queue, interrupt processing of the packet in the normal receiving queue, and process the packet in the priority receiving queue.
  • the processing unit includes:
  • the priority processing unit is configured to send each packet in the priority receiving queue to the corresponding service module for processing;
  • the normal processing sub-unit is configured to send each packet in the normal receiving queue to the corresponding service module for processing.
  • the priority of the HELLO packet is higher than the priority of the other protocol packet.
  • the priority of the HELLO packet transmission and reception processing is higher than that of other protocol packets.
  • two sending queues with different priorities are initialized, namely: a priority sending queue and a normal sending queue.
  • the transmission request in the priority transmission queue is processed; when there is no transmission request in the priority transmission queue, the transmission request in the normal transmission queue is processed.
  • two different receiving queues are initialized for the receiving of the message, namely: a priority receiving queue and a normal receiving queue.
  • a priority receiving queue When receiving a packet, it first checks whether the packet is a HELLO packet. If yes, the packet is added to the priority receiving queue; if not, the packet is added to the normal receiving queue. When there is a packet in the priority receiving queue, the packet in the priority receiving queue is processed. When there is no packet in the priority receiving queue, the packet in the normal receiving queue is processed.
  • the embodiment of the present invention provides a higher processing priority for the HELLO message in the process of sending and receiving packets.
  • the HELLO message can be processed preferentially, so that the HELLO message is not received in time. Disconnect the link.
  • Figure 1 is a schematic diagram of packet transmission and reception
  • FIG. 2 is a schematic flowchart of a method for preferentially transmitting and receiving a HELLO message according to Embodiment 1 of the present invention
  • FIG. 3 is a schematic flowchart of a method for preferentially transmitting and receiving a HELLO message according to Embodiment 2 of the present invention
  • FIG. 4 is a schematic structural diagram of a routing device according to Embodiment 1 of the present invention.
  • FIG. 5 is a schematic structural diagram of a routing device according to Embodiment 2 of the present invention.
  • FIG. 6 is a schematic structural diagram of a routing device according to Embodiment 3 of the present invention.
  • FIG. 2 is a schematic flowchart of a method for preferentially transmitting and receiving a HELLO message according to the first embodiment of the present invention.
  • the method for preferentially transmitting and receiving a HELLO message in the example is applied to a routing device. As shown in FIG. 2, the priority is to send and receive a HELLO message.
  • the method includes the following steps:
  • Step 201 When sending a packet, check whether the packet is a HELLO packet.
  • the routing device is a communication device such as a router.
  • the priority of the HELLO packet is higher than that of the other protocol packets.
  • the priority of the HELLO packet transmission and reception processing is higher than that of other protocol packets.
  • two sending queues with different priorities are initialized, namely: a priority sending queue and a normal sending queue.
  • the routing device When the routing device sends a packet, it detects whether the packet is a HELLO packet. Specifically, the service sending module in the routing device encapsulates the packet to be sent and sends the packet to the sending module. After receiving the request for sending the packet, the sending module checks whether the packet of the sending request is a HELLO packet. Here, according to the check of the corresponding protocol packet type field, it is determined whether the packet is a HELLO packet, for example, an OSPF HELLO packet. The type field corresponding to the text is 1.
  • Step 202 When the packet is a HELLO packet, the sending request of the packet is added to the priority sending queue. When the packet is not a HELLO packet, the sending request of the packet is added to the common Send queue.
  • the priority of the priority sending queue is higher than the priority of the ordinary sending queue.
  • Step 203 When there is a sending request in the priority sending queue, the sending request in the priority sending queue is processed; when there is no sending request in the priority sending queue, the sending request in the normal sending queue is processed.
  • the sending request in the priority sending queue is first processed, and the packet corresponding to each sending request in the priority sending queue is sent out only when all the priority sending queues are sent.
  • the sending request in the normal sending queue is started, specifically, the packet corresponding to each sending request in the normal sending queue is sent out. This ensures that the HELLO message in the priority send queue is sent with the highest processing priority.
  • the sending request processing of the normal sending queue when processing the sending request in the normal sending queue, detecting whether a new sending request is added in the priority sending queue; when detecting that a new sending request is added in the priority sending queue, interrupting the normal sending queue
  • the processing of sending a request and processing the sending request in the priority sending queue Specifically, in the process of processing the normal sending queue, if a new sending request is added to the priority sending queue, the sending request processing of the normal sending queue is interrupted, and the sending request in the priority sending queue is processed, and the processing is continued after the processing is completed. Send request processing in the normal send queue that was interrupted once. This preemptive treatment can guarantee HELLO The text is always sent with the highest priority.
  • the priority of the HELLO packet is higher than the priority of the other protocol packet.
  • the priority of the HELLO packet transmission and reception processing is higher than that of other protocol packets.
  • two sending queues with different priorities are initialized, namely: a priority sending queue and a normal sending queue.
  • a packet is sent, it is first detected whether the packet is a HELLO packet. If yes, the packet sending request is added to the priority sending queue; if not, the packet sending request is added to the normal sending queue.
  • the transmission request in the priority transmission queue is processed; when there is no transmission request in the priority transmission queue, the transmission request in the normal transmission queue is processed.
  • FIG. 3 is a schematic flowchart of a method for preferentially transmitting and receiving HELLO messages according to Embodiment 2 of the present invention.
  • the method for preferentially transmitting and receiving HELLO messages in the present example is applied to a routing device. As shown in FIG. 3, the priority is to send and receive HELLO messages.
  • the method includes the following steps:
  • Step 301 When receiving the packet, check whether the packet is a HELLO packet.
  • the routing device is a communication device such as a router.
  • the priority of the HELLO packet is higher than that of the other protocol packets.
  • the priority of the HELLO packet transmission and reception processing is higher than that of other protocol packets.
  • two receiving queues with different priorities are initialized, namely: a priority receiving queue and a normal receiving queue.
  • the routing device When the routing device receives the packet, it detects whether the packet is a HELLO packet. Specifically, the routing device sends the received packet to the receiving module, and after receiving the packet submitted by the bottom layer, the receiving module checks whether the packet is a HELLO packet, and if it is a HELLO packet, adds the packet to the HELLO packet. The priority receiving queue; if it is not a HELLO message, the message is added to the normal receiving queue. The method of determining whether a HELLO packet is based on the check of the corresponding protocol packet type field. For example, the type field of the OSPF HELLO packet is 1.
  • Step 302 Add the packet to the priority receiving queue when the packet is a HELLO packet, and add the packet to the normal receiving queue when the packet is not a HELLO packet.
  • the priority of the priority receiving queue is higher than the priority of the ordinary receiving queue.
  • Step 303 When there is a packet in the priority receiving queue, the packet in the priority receiving queue is processed. When there is no packet in the priority receiving queue, the packet in the normal receiving queue is processed.
  • the packet in the receiving queue is processed, and the packet in the priority receiving queue is processed first, and each packet in the priority receiving queue is submitted to the corresponding service module, for example, the OSPF HELLO packet is submitted to the OSPF service.
  • the module, the ISIS HELLO message is submitted to the ISIS service module; the packet in the normal receive queue is processed only after all the packets in the priority receive queue are processed.
  • the HELLO packet in the priority receiving queue is delivered to the corresponding service module with the highest processing priority, so that the corresponding neighbor time is updated in time, and the neighbor relationship cannot be deleted because the HELLO packet is not received in time.
  • the packet processing of the normal receiving queue is interrupted, and the packet in the priority receiving queue is processed, and the processing is continued.
  • the message receiving process in the interrupted normal receiving queue ensures that the HELLO message is always delivered to the corresponding service module with the highest priority, so that the corresponding neighbor time can be updated in time, and the neighbor relationship cannot be deleted because the HELLO is not received in time.
  • the routing device includes:
  • the first detecting unit 41 is configured to detect, when the packet is sent, whether the packet is a HELLO packet;
  • the priority sending unit 42 is configured to add the sending request of the packet to the priority sending queue when the packet is a HELLO packet;
  • the normal sending unit 43 is configured to add the sending request of the packet to the normal sending queue when the packet is not a HELLO packet;
  • the processing unit 44 is configured to process the transmission request in the priority transmission queue when there is a transmission request in the priority transmission queue, and to process the transmission request in the normal transmission queue when there is no transmission request in the priority transmission queue.
  • the routing device further includes:
  • the second detecting unit 45 is configured to detect whether a new sending request is added in the priority sending queue when processing the sending request in the normal sending queue;
  • the processing unit 44 is further configured to, when detecting that a new transmission request is added to the priority transmission queue, interrupt the processing of the transmission request in the normal transmission queue, and process the transmission request in the priority transmission queue.
  • the processing unit 44 includes:
  • the priority processing sub-unit 441 is configured to send the packet corresponding to each sending request in the priority sending queue.
  • the normal processing sub-unit 442 is configured to send the packet corresponding to each sending request in the normal sending queue.
  • each unit and its subunits in the routing device shown in FIG. 4 can be understood by referring to the related description of the foregoing method for preferentially transmitting and receiving HELLO messages.
  • the functions of each unit and its subunits in the routing device shown in FIG. 4 can be implemented by a program running on a processor, or can be implemented by a specific logic circuit.
  • FIG. 5 is a schematic structural diagram of a routing device according to Embodiment 2 of the present invention. As shown in FIG. 2, the routing device includes:
  • the first detecting unit 51 is configured to: when receiving the packet, detecting whether the packet is a HELLO packet;
  • the priority receiving unit 52 is configured to add the message to the priority receiving queue when the message is a HELLO message
  • the normal receiving unit 53 is configured to add the packet to the normal receiving queue when the packet is not a HELLO packet;
  • the processing unit 54 is configured to process the packet in the priority receiving queue when there is a packet in the priority receiving queue, and process the packet in the normal receiving queue when there is no packet in the priority receiving queue.
  • the routing device further includes:
  • the second detecting unit 55 is configured to detect whether a new packet is added to the priority receiving queue when processing the packet in the normal receiving queue;
  • the processing unit 54 is further configured to: when detecting that a new packet is added to the priority receiving queue, interrupt processing of the packet in the normal receiving queue, and process the packet in the priority receiving queue.
  • the processing unit 54 includes:
  • the priority processing sub-unit 541 is configured to send each packet in the priority receiving queue to the corresponding service module for processing;
  • the normal processing sub-unit 542 is configured to send each packet in the normal receiving queue to the corresponding service module for processing.
  • each unit and its subunits in the routing device shown in FIG. 5 can be understood by referring to the related description of the foregoing method for preferentially transmitting and receiving HELLO messages.
  • the functions of each unit and its subunits in the routing device shown in FIG. 5 can be implemented by a program running on a processor, or can be implemented by a specific logic circuit.
  • FIG. 6 is a schematic structural diagram of a routing device according to Embodiment 3 of the present invention. As shown in FIG. 6, the routing device includes:
  • the first detecting unit 61 is configured to detect, when the packet is sent, whether the packet is a HELLO packet;
  • the priority sending unit 62 is configured to: when the message is a HELLO message, add the sending request of the message to the priority sending queue;
  • the normal sending unit 63 is configured to add the sending request of the packet to the normal sending queue when the packet is not a HELLO packet;
  • the processing unit 64 is configured to process the transmission request in the priority transmission queue when there is a transmission request in the priority transmission queue, and to process the transmission request in the normal transmission queue when there is no transmission request in the priority transmission queue.
  • the routing device further includes:
  • the second detecting unit 65 is configured to detect whether a new sending request is added in the priority sending queue when processing the sending request in the normal sending queue;
  • the processing unit 64 is further configured to, when detecting that a new transmission request is added to the priority transmission queue, interrupt the processing of the transmission request in the normal transmission queue, and process the transmission request in the priority transmission queue.
  • the processing unit 64 includes:
  • the priority processing sub-unit 641 is configured to send the packet corresponding to each sending request in the priority sending queue.
  • the normal processing sub-unit 642 is configured to send the packet corresponding to each sending request in the normal sending queue.
  • the first detecting unit 61 is further configured to: when receiving the packet, detecting whether the packet is a HELLO packet;
  • the routing device further includes:
  • the priority receiving unit 66 is configured to: when the message is a HELLO message, the message is sent Add to the priority receive queue;
  • the normal receiving unit 67 is configured to add the packet to the normal receiving queue when the packet is not a HELLO packet;
  • the processing unit 64 is further configured to: when the packet is received in the priority receiving queue, the packet in the priority receiving queue is processed; when there is no packet in the priority receiving queue, the packet in the normal receiving queue is processed.
  • the second detecting unit 65 is further configured to: when processing a packet in the normal receiving queue, detecting whether a new packet is added in the priority receiving queue;
  • the processing unit 64 is further configured to: when detecting that a new packet is added to the priority receiving queue, interrupt processing of the packet in the normal receiving queue, and process the packet in the priority receiving queue.
  • the priority processing sub-unit 641 is further configured to send each packet in the priority receiving queue to the corresponding service module for processing;
  • the normal processing sub-unit 642 is further configured to send each packet in the normal receiving queue to the corresponding service module for processing.
  • each unit and its subunits in the routing device shown in FIG. 6 can be understood by referring to the related description of the foregoing method for preferentially transmitting and receiving HELLO messages.
  • the functions of each unit and its subunits in the routing device shown in FIG. 6 can be implemented by a program running on a processor, or can be implemented by a specific logic circuit.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the method and the routing device for preferentially transmitting and receiving HELLO messages provided by the embodiments of the present invention have the following beneficial effects: the processing priority given to the HELLO packets in the process of receiving and receiving packets is high, and the processor is busy.
  • the HELLO message can be processed preferentially, so that the neighbor is not disconnected because the HELLO message is not received in time.

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Abstract

本发明公开了一种优先收发HELLO报文的方法及路由设备，所述方法包括：当发送报文时，检测该报文是否为HELLO报文；当所述报文是HELLO报文时，将所述报文的发送请求添加至优先发送队列；当所述报文不是HELLO报文时，将所述报文的发送请求添加至普通发送队列；当优先发送队列中有发送请求时，处理优先发送队列中的发送请求；当优先发送队列中无发送请求时，处理普通发送队列中的发送请求。当接收报文时，检测该报文是否为HELLO报文；当所述报文是HELLO报文时，将所述报文添加至优先接收队列；当所述报文不是HELLO报文时，将所述报文添加至普通接收队列；当优先接收队列中有报文时，处理优先接收队列中的报文；当优先接收队列中无报文时，处理普通接收队列中的报文。

Description

一种优先收发HELLO报文的方法及路由设备 技术领域
本发明涉及通信技术，尤其涉及一种优先收发HELLO报文的方法及路由设备。
背景技术
通信网络中的很多协议都是通过HELLO报文机制来建立邻居关系，如路由协议中的边界网关协议(BGP，Border Gateway Protocol)、开放式最短路径优先(OSPF，Open Shortest Path First)、中间系统-中间系统(IS-IS，Intermediate System-to-Intermediate System)等。具体地，HELLO报文携带本地的相关属性信息，终端双方通过发送HELLO报文来发现对方，接收到对端发来的HELLO报文时，对HELLO报文进行有效性检查，各个参数如果匹配的情况下终端会记录下HELLO报文发送端这个邻居关系。
邻居双方会协商约定一定时间间隔内如果没有接收到邻居对方发来的HELLO报文时认为邻居已经不存在，需要将邻居关系删除，那么邻居通告过来的信息也会删除。
邻居关系建立完成后邻居双方还会交互协议其他类型的报文，用以交换双方各自拥有的信息，在此过程中HELLO报文还是需要定期发送以及时通知邻居对方本端的存在。通常情况下，协议的HELLO报文和其他报文都是相同优先级处理，从而可能出现处理器非常忙碌而没有及时接收或发送HELLO报文的情况，一定的时间间隔后没有及时收到邻居的HELLO报文会将邻居关系删除，并且将邻居通告的所有信息置为无效，进而可能影响路由表等。如图1所示，路由器1和路由器2协商四个HELLO报文 间隔内如果接收不到对方发来的HELLO报文后会将对端删除。路由器1接收到路由器2通告过来的路由信息，路由器2由于本地处理器忙碌导致四个HELLO报文间隔内没有发出HELLO报文，接着根据先前协商的约定，路由器1会将路由器2这个邻居删除，并且也会将路由器2先前通告的路由信息删除，进而影响本地的路由转发表。
发明内容
为解决上述技术问题，本发明实施例提供了一种优先收发HELLO报文的方法及路由设备。
本发明实施例提供的优先收发HELLO报文的方法包括：
当发送报文时，检测该报文是否为HELLO报文；
当所述报文是HELLO报文时，将所述报文的发送请求添加至优先发送队列；当所述报文不是HELLO报文时，将所述报文的发送请求添加至普通发送队列；
当优先发送队列中有发送请求时，处理优先发送队列中的发送请求；当优先发送队列中无发送请求时，处理普通发送队列中的发送请求。
在本发明一实施例中，所述方法还包括：
当处理普通发送队列中的发送请求时，检测优先发送队列中是否添加有新的发送请求；
当检测到优先发送队列中添加有新的发送请求时，中断对普通发送队列中的发送请求的处理，并处理优先发送队列中的发送请求。
在本发明一实施例中，所述处理优先发送队列中的发送请求，包括：将优先发送队列中的每个发送请求对应的报文发送出去；
所述处理普通发送队列中的发送请求，包括：将普通发送队列中的每 个发送请求对应的报文发送出去。
本发明另一实施例提供的优先收发HELLO报文的方法包括
当接收报文时，检测该报文是否为HELLO报文；
当所述报文是HELLO报文时，将所述报文添加至优先接收队列；当所述报文不是HELLO报文时，将所述报文添加至普通接收队列；
当优先接收队列中有报文时，处理优先接收队列中的报文；当优先接收队列中无报文时，处理普通接收队列中的报文。
在本发明一实施例中，所述方法还包括：
当处理普通接收队列中的报文时，检测优先接收队列中是否添加有新的报文；
当检测到优先接收队列中添加有新的报文时，中断对普通接收队列中的报文的处理，并处理优先接收队列中的报文。
在本发明一实施例中，所述处理优先接收队列中的报文，包括：将优先接收队列中的每个报文发送至对应业务模块进行处理；
所述处理普通发送队列中的发送请求，包括：将普通接收队列中的每个报文发送至对应业务模块进行处理。
本发明实施例提供的路由设备包括：
第一检测单元，设置为当发送报文时，检测该报文是否为HELLO报文；
优先发送单元，设置为当所述报文是HELLO报文时，将所述报文的发送请求添加至优先发送队列；
普通发送单元，设置为当所述报文不是HELLO报文时，将所述报文的发送请求添加至普通发送队列；
处理单元，设置为当优先发送队列中有发送请求时，处理优先发送队 列中的发送请求；当优先发送队列中无发送请求时，处理普通发送队列中的发送请求。
在本发明一实施例中，所述路由设备还包括：
第二检测单元，设置为当处理普通发送队列中的发送请求时，检测优先发送队列中是否添加有新的发送请求；
所述处理单元，还设置为当检测到优先发送队列中添加有新的发送请求时，中断对普通发送队列中的发送请求的处理，并处理优先发送队列中的发送请求。
在本发明一实施例中，所述处理单元包括：
优先处理子单元，设置为将优先发送队列中的每个发送请求对应的报文发送出去；
普通处理子单元，设置为将普通发送队列中的每个发送请求对应的报文发送出去。
本发明另一实施例提供的路由设备包括：
第一检测单元，设置为当接收报文时，检测该报文是否为HELLO报文；
优先接收单元，设置为当所述报文是HELLO报文时，将所述报文添加至优先接收队列；
普通接收单元，设置为当所述报文不是HELLO报文时，将所述报文添加至普通接收队列；
处理单元，设置为当优先接收队列中有报文时，处理优先接收队列中的报文；当优先接收队列中无报文时，处理普通接收队列中的报文。
在本发明一实施例中，所述路由设备还包括：
第二检测单元，设置为当处理普通接收队列中的报文时，检测优先接 收队列中是否添加有新的报文；
所述处理单元，还设置为当检测到优先接收队列中添加有新的报文时，中断对普通接收队列中的报文的处理，并处理优先接收队列中的报文
在本发明一实施例中，所述处理单元包括：
优先处理子单元，设置为将优先接收队列中的每个报文发送至对应业务模块进行处理；
普通处理子单元，设置为将普通接收队列中的每个报文发送至对应业务模块进行处理。
本发明实施例的技术方案中，HELLO报文的优先级高于其他协议报文的优先级，相应地，HELLO报文收发处理的优先级高于其他协议报文的收发处理。为此，针对报文的发送，初始化两个优先级不同的发送队列，分别为：优先发送队列、普通发送队列。当发送报文时，首先检测该报文是否为HELLO报文。是时，则将报文的发送请求添加至优先发送队列；否时，则将报文的发送请求添加至普通发送队列。当优先发送队列中有发送请求时，处理优先发送队列中的发送请求；当优先发送队列中无发送请求时，再处理普通发送队列中的发送请求。与报文的发送同理，对于报文的接收也初始化两个不同的接收队列，分别为：优先接收队列、普通接收队列。当接收到报文时，首先检测该报文是否为HELLO报文。是时，则将报文添加至优先接收队列；否时，则将报文添加至普通接收队列。当优先接收队列中有报文时，处理优先接收队列中的报文。当优先接收队列中无报文时，再处理普通接收队列中的报文。本发明实施例针对报文收发过程中赋予HELLO报文更高的处理优先级，在处理器忙碌的情况下使得HELLO报文能够优先得到处理，从而不会因为HELLO报文接收不及时而导致邻居断开链接。
附图说明
图1为报文收发示意图；
图2为本发明实施例一的优先收发HELLO报文的方法的流程示意图；
图3为本发明实施例二的优先收发HELLO报文的方法的流程示意图；
图4为本发明实施例一的路由设备的结构组成示意图；
图5为本发明实施例二的路由设备的结构组成示意图；
图6为本发明实施例三的路由设备的结构组成示意图。
具体实施方式
为了能够更加详尽地了解本发明实施例的特点与技术内容，下面结合附图对本发明实施例的实现进行详细阐述，所附附图仅供参考说明之用，并非用来限定本发明实施例。
图2为本发明实施例一的优先收发HELLO报文的方法的流程示意图，本示例中的优先收发HELLO报文的方法应用于路由设备，如图2所示，所述优先收发HELLO报文的方法包括以下步骤：
步骤201：当发送报文时，检测该报文是否为HELLO报文。
本发明实施例中，所述路由设备为路由器等通讯设备。
本发明实施例中，HELLO报文的优先级高于其他协议报文的优先级，相应地，HELLO报文收发处理的优先级高于其他协议报文的收发处理。为此，针对报文的发送，初始化两个优先级不同的发送队列，分别为：优先发送队列、普通发送队列。
当路由设备发送报文时，检测该报文是否为HELLO报文。具体地，路由设备中的业务发送模块将需要发送的报文封装完成后交予发送模块， 发送模块接收到报文的发送请求后，检查该发送请求的报文是否为HELLO报文，这里，依据对应协议报文类型字段的检查确定报文是否为HELLO报文，例如，OSPF的HELLO报文对应的类型字段为1。
步骤202：当所述报文是HELLO报文时，将所述报文的发送请求添加至优先发送队列；当所述报文不是HELLO报文时，将所述报文的发送请求添加至普通发送队列。
本发明实施例中，优先发送队列的优先级高于普通发送队列的优先级。
步骤203：当优先发送队列中有发送请求时，处理优先发送队列中的发送请求；当优先发送队列中无发送请求时，处理普通发送队列中的发送请求。
本发明实施例中，处理发送队列中的发送请求时，首先处理优先发送队列中的发送请求，将优先发送队列中的每个发送请求对应的报文发送出去，只有当优先发送队列中所有的发送请求处理完成后，才开始处理普通发送队列中的发送请求，具体为将普通发送队列中的每个发送请求对应的报文发送出去。这样可以保证优先发送队列中的HELLO报文以最高处理优先级发送出去。
本发明实施例中，当处理普通发送队列中的发送请求时，检测优先发送队列中是否添加有新的发送请求；当检测到优先发送队列中添加有新的发送请求时，中断对普通发送队列中的发送请求的处理，并处理优先发送队列中的发送请求。具体地，在处理普通发送队列过程中，如果有新的发送请求添加至优先发送队列中，则中断普通发送队列的发送请求处理，转去处理优先发送队列中的发送请求，处理完毕后继续上一次被中断的普通发送队列中的发送请求处理。这种抢占式的处理方式可以保证HELLO报 文始终以最高优先级发送出去。
本发明实施例的技术方案中，HELLO报文的优先级高于其他协议报文的优先级，相应地，HELLO报文收发处理的优先级高于其他协议报文的收发处理。为此，针对报文的发送，初始化两个优先级不同的发送队列，分别为：优先发送队列、普通发送队列。当发送报文时，首先检测该报文是否为HELLO报文。是时，则将报文的发送请求添加至优先发送队列；否时，则将报文的发送请求添加至普通发送队列。当优先发送队列中有发送请求时，处理优先发送队列中的发送请求；当优先发送队列中无发送请求时，再处理普通发送队列中的发送请求。
图3为本发明实施例二的优先收发HELLO报文的方法的流程示意图，本示例中的优先收发HELLO报文的方法应用于路由设备，如图3所示，所述优先收发HELLO报文的方法包括以下步骤：
步骤301：当接收报文时，检测该报文是否为HELLO报文。
本发明实施例中，所述路由设备为路由器等通讯设备。
本发明实施例中，HELLO报文的优先级高于其他协议报文的优先级，相应地，HELLO报文收发处理的优先级高于其他协议报文的收发处理。为此，针对报文的接收，初始化两个优先级不同的接收队列，分别为：优先接收队列、普通接收队列。
当路由设备接收报文时，检测该报文是否为HELLO报文。具体地，路由设备底层将接收到的报文交予接收模块，接收模块接收到底层提交的报文后，检查该报文是否为HELLO报文，如果是HELLO报文，则将报文添加至优先接收队列；如果不是HELLO报文，则将报文添加至普通接收队列。判断是否为HELLO报文的方法主要依据对应协议报文类型字段的检查，例如，OSPF的HELLO报文对应的类型字段为1。
步骤302：当所述报文是HELLO报文时，将所述报文添加至优先接收队列；当所述报文不是HELLO报文时，将所述报文添加至普通接收队列。
本发明实施例中，优先接收队列的优先级高于普通接收队列的优先级。
步骤303：当优先接收队列中有报文时，处理优先接收队列中的报文；当优先接收队列中无报文时，处理普通接收队列中的报文。
本发明实施例中，处理接收队列中的报文，首先处理优先接收队列中的报文，将优先接收队列中的每个报文提交至对应业务模块，例如OSPF的HELLO报文提交至OSPF业务模块，ISIS的HELLO报文则提交至ISIS业务模块；只有当优先接收队列中所有报文处理完成后，才开始处理普通接收队列中的报文。这样可以保证优先接收队列中的HELLO报文以最高处理优先级交由对应业务模块，从而保证对应邻居时间得到及时更新，而不会可能因为没有及时接收到HELLO报文而导致邻居关系删除。
在处理普通接收队列过程中，如果有新的报文添加至优先接收队列中时，则中断普通接收队列的报文处理，转去处理优先接收队列中的报文，处理完毕后继续上一次被中断的普通接收队列中的报文接收处理。这种抢占式的处理方式可以保证HELLO报文始终以最高优先级交由对应业务模块，从而保证对应邻居时间可以得到及时更新，而不会可能因为没有及时接收到HELLO而导致邻居关系删除。
图4为本发明实施例一的路由设备的结构组成示意图，如图4所示，所述路由设备包括：
第一检测单元41，设置为当发送报文时，检测该报文是否为HELLO报文；
优先发送单元42，设置为当所述报文是HELLO报文时，将所述报文的发送请求添加至优先发送队列；
普通发送单元43，设置为当所述报文不是HELLO报文时，将所述报文的发送请求添加至普通发送队列；
处理单元44，设置为当优先发送队列中有发送请求时，处理优先发送队列中的发送请求；当优先发送队列中无发送请求时，处理普通发送队列中的发送请求。
在本发明一实施例中，所述路由设备还包括：
第二检测单元45，设置为当处理普通发送队列中的发送请求时，检测优先发送队列中是否添加有新的发送请求；
所述处理单元44，还设置为当检测到优先发送队列中添加有新的发送请求时，中断对普通发送队列中的发送请求的处理，并处理优先发送队列中的发送请求。
在本发明一实施例中，所述处理单元44包括：
优先处理子单元441，设置为将优先发送队列中的每个发送请求对应的报文发送出去；
普通处理子单元442，设置为将普通发送队列中的每个发送请求对应的报文发送出去。
本领域技术人员应当理解，图4所示的路由设备中的各单元及其子单元的实现功能可参照前述优先收发HELLO报文的方法的相关描述而理解。图4所示的路由设备中的各单元及其子单元的功能可通过运行于处理器上的程序而实现，也可通过具体的逻辑电路而实现。
图5为本发明实施例二的路由设备的结构组成示意图，如图2所示，所述路由设备包括：
第一检测单元51，设置为当接收报文时，检测该报文是否为HELLO报文；
优先接收单元52，设置为当所述报文是HELLO报文时，将所述报文添加至优先接收队列；
普通接收单元53，设置为当所述报文不是HELLO报文时，将所述报文添加至普通接收队列；
处理单元54，设置为当优先接收队列中有报文时，处理优先接收队列中的报文；当优先接收队列中无报文时，处理普通接收队列中的报文。
在本发明一实施例中，所述路由设备还包括：
第二检测单元55，设置为当处理普通接收队列中的报文时，检测优先接收队列中是否添加有新的报文；
所述处理单元54，还设置为当检测到优先接收队列中添加有新的报文时，中断对普通接收队列中的报文的处理，并处理优先接收队列中的报文
在本发明一实施例中，所述处理单元54包括：
优先处理子单元541，设置为将优先接收队列中的每个报文发送至对应业务模块进行处理；
普通处理子单元542，设置为将普通接收队列中的每个报文发送至对应业务模块进行处理。
本领域技术人员应当理解，图5所示的路由设备中的各单元及其子单元的实现功能可参照前述优先收发HELLO报文的方法的相关描述而理解。图5所示的路由设备中的各单元及其子单元的功能可通过运行于处理器上的程序而实现，也可通过具体的逻辑电路而实现。
图6为本发明实施例三的路由设备的结构组成示意图，如图6所示，所述路由设备包括：
第一检测单元61，设置为当发送报文时，检测该报文是否为HELLO报文；
优先发送单元62，设置为当所述报文是HELLO报文时，将所述报文的发送请求添加至优先发送队列；
普通发送单元63，设置为当所述报文不是HELLO报文时，将所述报文的发送请求添加至普通发送队列；
处理单元64，设置为当优先发送队列中有发送请求时，处理优先发送队列中的发送请求；当优先发送队列中无发送请求时，处理普通发送队列中的发送请求。
在本发明一实施例中，所述路由设备还包括：
第二检测单元65，设置为当处理普通发送队列中的发送请求时，检测优先发送队列中是否添加有新的发送请求；
所述处理单元64，还设置为当检测到优先发送队列中添加有新的发送请求时，中断对普通发送队列中的发送请求的处理，并处理优先发送队列中的发送请求。
在本发明一实施例中，所述处理单元64包括：
优先处理子单元641，设置为将优先发送队列中的每个发送请求对应的报文发送出去；
普通处理子单元642，设置为将普通发送队列中的每个发送请求对应的报文发送出去。
所述第一检测单元61，还设置为当接收报文时，检测该报文是否为HELLO报文；
所述路由设备还包括：
优先接收单元66，设置为当所述报文是HELLO报文时，将所述报文 添加至优先接收队列；
普通接收单元67，设置为当所述报文不是HELLO报文时，将所述报文添加至普通接收队列；
所述处理单元64，还设置为当优先接收队列中有报文时，处理优先接收队列中的报文；当优先接收队列中无报文时，处理普通接收队列中的报文。
所述第二检测单元65，还设置为当处理普通接收队列中的报文时，检测优先接收队列中是否添加有新的报文；
所述处理单元64，还设置为当检测到优先接收队列中添加有新的报文时，中断对普通接收队列中的报文的处理，并处理优先接收队列中的报文
所述优先处理子单元641，还设置为将优先接收队列中的每个报文发送至对应业务模块进行处理；
所述普通处理子单元642，还设置为将普通接收队列中的每个报文发送至对应业务模块进行处理。
本领域技术人员应当理解，图6所示的路由设备中的各单元及其子单元的实现功能可参照前述优先收发HELLO报文的方法的相关描述而理解。图6所示的路由设备中的各单元及其子单元的功能可通过运行于处理器上的程序而实现，也可通过具体的逻辑电路而实现。
显然，本领域的技术人员应该明白，上述的本发明的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
工业实用性
如上所述，本发明实施例提供的一种优先收发HELLO报文的方法及路由设备具有以下有益效果：针对报文收发过程中赋予HELLO报文更高的处理优先级，在处理器忙碌的情况下使得HELLO报文能够优先得到处理，从而不会因为HELLO报文接收不及时而导致邻居断开链接。

Claims (12)

  1. 一种优先收发HELLO报文的方法，所述方法包括：
    当发送报文时，检测该报文是否为HELLO报文；
    当所述报文是HELLO报文时，将所述报文的发送请求添加至优先发送队列；当所述报文不是HELLO报文时，将所述报文的发送请求添加至普通发送队列；
    当优先发送队列中有发送请求时，处理优先发送队列中的发送请求；当优先发送队列中无发送请求时，处理普通发送队列中的发送请求。
  2. 根据权利要求1所述的优先收发HELLO报文的方法，其中，所述方法还包括：
    当处理普通发送队列中的发送请求时，检测优先发送队列中是否添加有新的发送请求；
    当检测到优先发送队列中添加有新的发送请求时，中断对普通发送队列中的发送请求的处理，并处理优先发送队列中的发送请求。
  3. 根据权利要求1或2所述的优先收发HELLO报文的方法，其中，所述处理优先发送队列中的发送请求，包括：将优先发送队列中的每个发送请求对应的报文发送出去；
    所述处理普通发送队列中的发送请求，包括：将普通发送队列中的每个发送请求对应的报文发送出去。
  4. 一种优先收发HELLO报文的方法，所述方法包括
    当接收报文时，检测该报文是否为HELLO报文；
    当所述报文是HELLO报文时，将所述报文添加至优先接收队列；当所述报文不是HELLO报文时，将所述报文添加至普通接收队列；
    当优先接收队列中有报文时，处理优先接收队列中的报文；当优先接收队列中无报文时，处理普通接收队列中的报文。
  5. 根据权利要求4所述的优先收发HELLO报文的方法，其中，所述方法还包括：
    当处理普通接收队列中的报文时，检测优先接收队列中是否添加有新的报文；
    当检测到优先接收队列中添加有新的报文时，中断对普通接收队列中的报文的处理，并处理优先接收队列中的报文。
  6. 根据权利要求4或5所述的优先收发HELLO报文的方法，其中，所述处理优先接收队列中的报文，包括：将优先接收队列中的每个报文发送至对应业务模块进行处理；
    所述处理普通发送队列中的发送请求，包括：将普通接收队列中的每个报文发送至对应业务模块进行处理。
  7. 一种路由设备，所述路由设备包括：
    第一检测单元，设置为当发送报文时，检测该报文是否为HELLO报文；
    优先发送单元，设置为当所述报文是HELLO报文时，将所述报文的发送请求添加至优先发送队列；
    普通发送单元，设置为当所述报文不是HELLO报文时，将所述报文的发送请求添加至普通发送队列；
    处理单元，设置为当优先发送队列中有发送请求时，处理优先发送队列中的发送请求；当优先发送队列中无发送请求时，处理普通发送队列中的发送请求。
  8. 根据权利要求7所述的路由设备，其中，所述路由设备还包括：
    第二检测单元，设置为当处理普通发送队列中的发送请求时，检测优先发送队列中是否添加有新的发送请求；
    所述处理单元，还设置为当检测到优先发送队列中添加有新的发送请求时，中断对普通发送队列中的发送请求的处理，并处理优先发送队列中的发送请求。
  9. 根据权利要求7或8所述的路由设备，其中，所述处理单元包括：
    优先处理子单元，设置为将优先发送队列中的每个发送请求对应的报文发送出去；
    普通处理子单元，设置为将普通发送队列中的每个发送请求对应的报文发送出去。
  10. 一种路由设备，所述路由设备包括：
    第一检测单元，设置为当接收报文时，检测该报文是否为HELLO报文；
    优先接收单元，设置为当所述报文是HELLO报文时，将所述报文添加至优先接收队列；
    普通接收单元，设置为当所述报文不是HELLO报文时，将所述报文添加至普通接收队列；
    处理单元，设置为当优先接收队列中有报文时，处理优先接收队列中的报文；当优先接收队列中无报文时，处理普通接收队列中的报文。
  11. 根据权利要求10所述的路由设备，其中，所述路由设备还包括：
    第二检测单元，设置为当处理普通接收队列中的报文时，检测优先接收队列中是否添加有新的报文；
    所述处理单元，还设置为当检测到优先接收队列中添加有新的报文时，中断对普通接收队列中的报文的处理，并处理优先接收队列中的报文
  12. 根据权利要求10或11所述的路由设备，其中，所述处理单元包括：
    优先处理子单元，设置为将优先接收队列中的每个报文发送至对应业务模块进行处理；
    普通处理子单元，设置为将普通接收队列中的每个报文发送至对应业务模块进行处理。
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