WO2017041469A1 - 一种ptn设备中dcn不规则域互通的方法及装置 - Google Patents

一种ptn设备中dcn不规则域互通的方法及装置 Download PDF

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WO2017041469A1
WO2017041469A1 PCT/CN2016/076877 CN2016076877W WO2017041469A1 WO 2017041469 A1 WO2017041469 A1 WO 2017041469A1 CN 2016076877 W CN2016076877 W CN 2016076877W WO 2017041469 A1 WO2017041469 A1 WO 2017041469A1
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domain
node
irregular
backbone
virtual link
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PCT/CN2016/076877
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French (fr)
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陈炯
马西照
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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
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks

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  • the present invention relates to the field of PTN (Packet Transport Network) device management control plane technology, and in particular, to a method and device for DCN (Data Communication Network) irregular domain interworking in a PTN device.
  • PTN Packet Transport Network
  • DCN Data Communication Network
  • the normal domain that is not directly connected to the backbone domain cannot flood its own routes to other areas.
  • Such a limitation may make the DCN network inflexible when it is expanded, or the network may be unreachable when a single ABR (Area Border Router) in the area fails.
  • An object of the present invention is to provide a method and an apparatus for DCN irregular domain interworking in a PTN device, which solves the problem of incompatibility in the prior art and network unreachability caused by a single point failure of the ABR.
  • a method for DCN irregular domain interworking in a PTN device including the following steps:
  • the common domain that is adjacent to the irregular domain and the backbone domain defaults to the bridged domain.
  • the irregular domain diffuses irregular domain routing information to the backbone domain via the bridging domain
  • the backbone domain diffuses backbone domain global routing information to the irregular domain via the bridging domain.
  • the default for the common domain that is adjacent to the irregular domain and the backbone domain to be a bridge domain includes:
  • BBR bridge board router
  • the BBR node automatically establishes an ABR node or an autonomous system border router ASBR to the backbone domain. a first virtual link of the node (Autonomous System Boundary Router), and sending, by the first virtual link, the irregular domain hello message including the bridge domain ID to the ABR node or the ASBR node;
  • the ABR node or the ASBR node receives and automatically establishes a second virtual link to the BBR node according to the bridging domain ID included in the irregular domain hello message, and sends the second virtual link to the BBR node by using the second virtual link. Send the hello message of the backbone domain.
  • the irregular domain spreading the irregular domain routing information to the backbone domain via the bridging domain includes:
  • the BBR node of the irregular domain sends an irregular domain hello packet containing the irregular domain routing information to the ABR node or the ASBR node by using the first virtual link of the bridging domain, so as to spread the irregular domain routing information to The backbone domain.
  • the disseminating, by the backbone domain, the backbone domain global routing information to the irregular domain via the bridging domain includes:
  • the ABR node of the backbone domain sends a backbone domain hello packet including the global routing information of the backbone domain to the BBR node or the ASBR node by using the second virtual link of the bridging domain, so as to spread the global routing information of the backbone domain to the Irregular domain.
  • the method further comprises:
  • the deleting the first virtual link and the second virtual link established in the bridge domain includes:
  • the second virtual link is deleted.
  • an apparatus for DCN irregular domain interworking in a PTN device including:
  • An irregular domain module is generated, which is used to abut a common domain between the irregular domain and the backbone domain when a single node of the ABR is faulty, causing an irregular domain that is not adjacent to the backbone domain.
  • the default is the bridge domain;
  • An interworking module wherein the irregular domain diffuses irregular domain routing information to the backbone domain via the bridging domain, and the backbone domain diffuses backbone domain global routing information to the irregularity via the bridging domain area.
  • the generating the irregular domain module comprises:
  • Generating a BBR node unit configured to upgrade the bridge node and the router node adjacent to the irregular domain to a bridge router BBR node;
  • the BBR node automatically establishing a first virtual link to an ABR node or an autonomous system border router ASBR node of the backbone domain, and using the first virtual link to the ABR node or an ASBR node Sending an irregular domain hello message including the bridge domain ID, and the ABR node or the ASBR node And the second virtual link to the BBR node is automatically established according to the bridging domain ID included in the irregular domain hello message, and the backbone domain hello packet is sent to the BBR node by using the second virtual link.
  • the interworking module comprises:
  • the BBR node for the irregular domain sends an irregular domain hello packet containing the irregular domain routing information to the ABR node or the ASBR node by using the first virtual link of the bridging domain, so that Irregular domain routing information is spread to the backbone domain;
  • a second interworking unit wherein the ABR node of the backbone domain sends a backbone domain hello packet including the global routing information of the backbone domain to the BBR node or the ASBR node by using the second virtual link of the bridging domain, so as to connect the backbone domain Global routing information is spread to the irregular domain.
  • the method further includes deleting a virtual link unit, where the first virtual link and the second virtual state established in the bridge domain are deleted when the ABR single node fault is eliminated and the irregular domain is adjacent to the backbone domain. link.
  • An embodiment of the present invention further provides a device for DCN irregular domain interworking in a PTN device, including:
  • a memory for storing processor executable instructions
  • processor is configured to:
  • the common domain that is adjacent to the irregular domain and the backbone domain defaults to the bridged domain.
  • the irregular domain diffuses irregular domain routing information to the backbone domain via the bridging domain
  • the backbone domain diffuses backbone domain global routing information to the irregular domain via the bridging domain.
  • Embodiments of the present invention also provide a non-transitory computer readable storage medium having stored therein instructions that, when executed by a processor, cause the processor to implement DCN irregular domain interworking in a PTN device Method, the method comprising the steps of:
  • the common domain that is adjacent to the irregular domain and the backbone domain defaults to the bridged domain.
  • the irregular domain diffuses irregular domain routing information to the backbone domain via the bridging domain
  • the backbone domain diffuses backbone domain global routing information to the irregular domain via the bridging domain.
  • the invention effectively solves the problem of automatic intercommunication of irregular regions, and also solves the problem that the single point of ABR causes automatic recovery after the entire area is unreachable, and achieves the interconnection and intercommunication of DCN between PTN devices.
  • FIG. 1 is a flowchart of a method for DCN irregular domain interworking in a PTN device according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of an apparatus for DCN irregular domain interworking in a PTN device according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of automatically creating a virtual link networking in an irregular domain according to the first embodiment of the present invention
  • FIG. 4 is a schematic diagram of automatically creating a virtual link networking in an irregular domain according to a second embodiment of the present invention.
  • FIG. 5 is a flowchart of automatically creating a virtual link networking in an irregular domain according to an embodiment of the present invention
  • FIG. 6 is a flowchart of automatically deleting a virtual link network in an irregular domain according to an embodiment of the present invention.
  • a plurality of device network elements are included in the DCN network, and multiple network elements are divided according to the size of the network that can be received.
  • the scenario adjacent to the backbone domain is not described. If an area is not adjacent to the backbone domain, according to the OSPF protocol. It is stipulated that routes in this area and other area routes cannot learn from each other. To solve this problem, a new bridging domain is added to the OSPF domain. The bridging domain is connected to the backbone domain. The routing information of the irregular domain that is not directly adjacent to the backbone domain is flooded to the backbone domain. The global routing information is spread to this irregular domain.
  • the present invention proposes the concept of BBR, which refers to a router node adjacent to an irregular domain in a bridging domain. Among them, a common domain that is not directly connected to the backbone domain is called an irregular domain.
  • FIG. 1 is a flowchart of a DCN irregular domain interworking method in a PTN device according to an embodiment of the present invention. As shown in FIG. 1 , the method includes the following steps:
  • Step S101 When the expansion or the area border router ABR is faulty, and the irregular domain that is not adjacent to the backbone domain is generated in the network, the common domain that is adjacent to the irregular domain and the backbone domain is the bridge domain by default;
  • Step S102 The irregular domain diffuses irregular domain routing information to the backbone domain via the bridging domain;
  • Step S103 The backbone domain diffuses the backbone domain global routing information to the irregular domain via the bridging domain.
  • the default for the common domain between the irregular domain and the backbone domain to be the bridge domain includes: upgrading the bridge node and the router node adjacent to the irregular domain to a bridge router BBR node;
  • the BBR node automatically establishes a first virtual link to the ABR node or the autonomous system border router ASBR node of the backbone domain, and sends, by using the first virtual link, the bridging domain ID to the ABR node or the ASBR node.
  • An irregular domain hello packet the ABR node or the ASBR node receives and automatically establishes a second virtual link to the BBR node according to the bridge domain ID included in the irregular domain hello packet, and passes the second The virtual link sends a backbone domain hello packet to the BBR node.
  • the irregular domain spreading the irregular domain routing information to the backbone domain via the bridging domain includes: the BBR node of the irregular domain sends the ABR to the ABR via a first virtual link of the bridging domain
  • the node or the ASBR sends an irregular domain hello message containing the irregular domain routing information to spread the irregular domain routing information to the backbone domain.
  • Dissipating the backbone domain global routing information to the irregular domain via the bridging domain includes: the ABR node of the backbone domain sending the BBR node or the ASBR node by using a second virtual link of the bridging domain
  • a backbone domain hello packet containing the global routing information of the backbone domain to diffuse the global routing information of the backbone domain to the irregular domain.
  • the present invention also includes: when the ABR single node failure is eliminated and the irregular domain is adjacent to the backbone domain, The first virtual link and the second virtual link established in the bridge domain are deleted.
  • the deleting the first virtual link and the second virtual link in the bridging domain includes: when detecting that the BBR node stops sending the irregular domain to the ABR node or the ASBR node by using the first virtual link In the hello message, the first virtual link is deleted; if the ABR node or the ASBR node does not receive the irregular domain hello message sent by the BBR node within the preset waiting time, the The second virtual link.
  • FIG. 2 is a schematic diagram of an apparatus for interworking between DCN irregular domains in a PTN device according to an embodiment of the present invention.
  • the method includes: generating an irregular domain module 201 and an interworking module 202.
  • the generating the irregular domain module 201 is configured to be adjacent to the irregular domain and the backbone domain when the expansion or the regional border router ABR is faulty, causing an irregular domain in the network that is not adjacent to the backbone domain.
  • the common domain defaults to a bridging domain;
  • the interworking module 202 is configured to diffuse the irregular domain routing information to the backbone domain via the bridging domain, and the backbone domain via the bridging domain
  • the global routing information of the backbone domain is spread to the irregular domain.
  • the generating the irregular domain module 201 includes: generating a BBR node unit, and upgrading the bridge node adjacent to the irregular domain to a bridge router BBR node; establishing a virtual link unit, Automatically establishing a first virtual link to the ABR node or the autonomous system border router ASBR node of the backbone domain, and sending, by using the first virtual link, the bridging domain to the ABR node or the ASBR node by using the first virtual link
  • An irregular domain hello message of the ID and the ABR node or the ASBR node receives and automatically establishes a second virtual link to the BBR node according to the bridging domain ID included in the irregular domain hello message, and passes the The second virtual link sends a backbone domain hello message to the BBR node.
  • the interworking module 202 includes: a first interworking unit, where the BBR node for the irregular domain sends an irregularity including irregular domain routing information to the ABR node or the ASBR node by using the first virtual link of the bridging domain a domain hello packet to spread the irregular domain routing information to the backbone domain; a second interworking unit, the ABR node for the backbone domain to the BBR node or the ASBR via the second virtual link of the bridging domain The node sends a backbone domain hello packet containing the global routing information of the backbone domain to spread the global routing information of the backbone domain to the irregular domain.
  • the present invention also includes deleting a virtual link unit, for deleting the first virtual link and the second virtual link established in the bridge domain when the ABR single node failure is eliminated and the irregular domain is adjacent to the backbone domain .
  • FIG. 3 is a schematic diagram of the automatic creation of a virtual link network in an irregular domain according to the first embodiment of the present invention.
  • the area 2 is not adjacent to the backbone domain 0 due to network expansion, and belongs to an irregular area.
  • the node is executed as follows: area 2 multicast hello message, running normal OSPF protocol, broadcasting LSA (Link-State Advertisement) in area 2, and after receiving the route update of area 2, the node B finds that the route is updated.
  • LSA Link-State Advertisement
  • the node A is selected, and then the first virtual link to the node A is automatically established, and the node B sends a hello message to the node A.
  • the hello packet contains the area number of the bridged domain. In this example, the bridged domain is area 1.
  • the node A finds that it is a special hello packet, and resolves the area number of the bridged domain.
  • the second virtual link to the node B is automatically established according to the area number of the bridged domain in the hello packet. It also sends a hello packet to the node B.
  • Node A and node The virtual link between B has been established, and then standard OSPF negotiation can be performed. After the negotiation is completed, the node B is upgraded to the ABR, so that the area 2 is reachable to the entire network.
  • FIG. 4 is a schematic diagram of automatically creating a virtual link network in an irregular domain according to the second embodiment of the present invention.
  • there are three domains in the entire OSPF network and both area 1 and area 2 are adjacent to the backbone domain 0.
  • Both node A and node B are ABRs, and node C is adjacent to area 1 and area 2, respectively. Under normal conditions, it is a normal OSPF area. If node B fails and node B is the only ABR of area 2, area 2 Then it becomes an irregular area and is isolated by the entire network.
  • the node in the area 2 performs the following steps: after the node B is faulty, the hello keep-alive packet times out, and the LSA update message is broadcast in the area 2; the node C receives the LSA update information, and the area 2 has become Irregular area, there is no ABR in this area, and there is still ABR in area 1, then node C is promoted to BBR node; node C promoted to BBR automatically creates virtual link to ABR node, which is node A, and sends request to establish virtual The private message of the link, the area ID of the bridge domain (in this example, area 1) and the route ID of the node C; after receiving the request message, the node A resolves the domain ID of the bridged domain, and then creates The virtual link to the node C is sent to the node C at the same time. The virtual link at both ends is established. Then, the OSPF negotiation can be performed. After the negotiation is completed, the node C is upgraded to the ABR. 0 adjacency, so
  • FIG. 5 is a flowchart of automatically creating a virtual link network in an irregular domain according to an embodiment of the present invention. As shown in FIG. 5, the method includes the following steps:
  • Step S501 Establish a BBR node.
  • an ABR or an ASBR exists in the node information of an LSA received in a domain and is not a backbone domain, the domain defaults to the bridging domain. If a node in the bridged domain is adjacent to an irregular area, this node is considered to be a BBR.
  • Step S502 The BBR node automatically establishes a virtual link with the ABR.
  • the BBR After the BBR is selected, the BBR automatically establishes a virtual link with the ABR or ASBR.
  • Step S503 The BBR broadcasts a private hello packet, and the hello packet carries the area ID of the bridge domain.
  • the BBR After the BBR automatically establishes a virtual link with the ABR or the ASBR, it broadcasts the hello packet at the same time.
  • the hello packet is unicast to the ABR through the virtual link.
  • the information required to create the virtual link on the ABR is bridged at the end of the hello packet. Domain ID of the domain).
  • Step S504 The ABR receives the hello packet, and establishes a virtual link with the BBR according to the bridge domain ID.
  • the ABR or the ASBR receives the hello packet and establishes a virtual link to the BBR based on the bridge domain ID in the hello packet.
  • Step S505 Perform normal OSPF interaction.
  • FIG. 6 is a flowchart of automatically deleting a virtual link network in an irregular domain according to an embodiment of the present invention. As shown in FIG. 6, the virtual link to be created is deleted, and the following steps are included:
  • Step S601 The BBR detects that a node in the area is adjacent to the area 0;
  • the node B that is the only ABR in the area 2 is directly adjacent to the backbone domain.
  • Step S602 The BBR stops sending the hello packet to the ABR through the virtual link, and deletes the virtual link to the ABR.
  • the first virtual link that is, the virtual link of the BBR to the ABR is deleted.
  • Step S603 The ABR detects that the hello packet of the BBR times out and deletes the virtual link to the BBR.
  • the second virtual link that is, the virtual link from the ABR to the BBR, is deleted.
  • the irregular domain that is not adjacent to the backbone domain becomes a common domain, and the node C detects that the node B recovers, the BBR automatically deletes the virtual link to the ABR, and the ABR Perceived virtual link down also automatically deletes the virtual link to BBR.
  • a device for DCN irregular domain interworking in a PTN device including:
  • a memory for storing processor executable instructions
  • processor is configured to:
  • the common domain that is adjacent to the irregular domain and the backbone domain defaults to the bridged domain.
  • the irregular domain diffuses irregular domain routing information to the backbone domain via the bridging domain
  • the backbone domain diffuses backbone domain global routing information to the irregular domain via the bridging domain.
  • a non-transitory computer readable storage medium having stored therein instructions that, when executed by a processor, cause the processor to implement a PTN device
  • a method for DCN irregular domain interworking comprising the following steps:
  • the common domain that is adjacent to the irregular domain and the backbone domain defaults to the bridged domain.
  • the irregular domain diffuses irregular domain routing information to the backbone domain via the bridging domain
  • the backbone domain diffuses backbone domain global routing information to the irregular domain via the bridging domain.
  • the present invention has the following technical effects:
  • the invention can effectively solve the problem of automatic intercommunication of irregular regions, and also solves the problem that the single point failure of the ABR causes automatic recovery after the entire area is unreachable.
  • the DCN irregular domain interworking method and device of the present application can be applied to a PTN device, which can realize automatic interworking of irregular areas, and solve the problem that the ABR single point failure causes automatic recovery after the entire area is unreachable, and the PTN device is achieved. Interconnection between DCNs.

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Abstract

本发明公开了一种PTN设备中DCN不规则域互通的方法及装置，涉及PTN设备管理控制平面技术领域，其方法包括以下步骤：当扩容或区域边界路由器ABR单节点故障，导致网络中出现与骨干域不邻接的不规则域时，将邻接在所述不规则域与骨干域之间的普通域默认为桥接域；所述不规则域经由所述桥接域将不规则域路由信息扩散到所述骨干域；所述骨干域经由所述桥接域将骨干域全局路由信息扩散到所述不规则域。本发明有效解决了不规则区域自动互通问题，也解决了ABR的单点故障导致整个区域不可达后自动恢复的问题，达到了PTN设备间的DCN的互联互通。

Description

一种PTN设备中DCN不规则域互通的方法及装置
本申请要求于2015年9月10日提交中国专利局、申请号为201510571668.6的中国专利申请的优先权，以上全部内容通过引用结合在本申请中。
技术领域
本发明涉及PTN(分组传送网，Packet Transport Network)设备管理控制平面技术领域，特别涉及一种PTN设备中DCN(Data Communication Network，数据通信网络)不规则域互通的方法及装置。
背景技术
在电信网络中，为了管理分散到各地的设备网元，各大设备厂商都开发出了自己的DCN。随着电信网络的规模不断扩大，为了解决设备间DCN的互联互通，引入了OSPF(Open Shortest Path First，开放式最短路径优先)、BGP(Border Gateway Protocol，边界网关协议)等路由协议叠加在DCN网络之上。专利CN200510033350.9提出了将DCN网络进行多域的划分进而限制路由的全网络扩散，从而减少对设备资源(CPU(Central Processing Unit，中央处理器)、内存)以及DCN带宽的消耗。对于某些路由协议来说，多域划分时限制了普通域必须与骨干域直连，没有直接与骨干域相连的普通域无法把自己的路由扩散到其他区域。这样的限制会让DCN网络在扩容时不够灵活，或者当区域内仅存的单个ABR(Area Border Router，区域边界路由器)故障时网络不可达。
发明内容
本发明的目的在于提供一种PTN设备中DCN不规则域互通的方法及装置，解决了现有技术中的扩容不灵活和ABR单点故障导致的网络不可达的问题。
根据本发明的一个方面，提供了一种PTN设备中DCN不规则域互通的方法，包括以下步骤：
当扩容或区域边界路由器ABR单节点故障，导致网络中出现与骨干域不邻接的不规则域时，将邻接在所述不规则域与骨干域之间的普通域默认为桥接域；
所述不规则域经由所述桥接域将不规则域路由信息扩散到所述骨干域；
所述骨干域经由所述桥接域将骨干域全局路由信息扩散到所述不规则域。
优选地，所述将邻接在所述不规则域与骨干域之间的普通域默认为桥接域包括：
将所述桥接域与所述不规则域邻接的路由器节点升级为桥板路由器BBR(Bridge Board Router，桥板路由器)节点；
所述BBR节点自动建立到所述骨干域的ABR节点或自治系统边界路由器ASBR (Autonomous System Boundary Router，自治系统边界路由器)节点的第一虚链接，并通过所述第一虚链接向所述ABR节点或ASBR节点发送包含所述桥接域ID的不规则域hello报文；
所述ABR节点或ASBR节点接收并根据所述不规则域hello报文中包含的桥接域ID自动建立到所述BBR节点的第二虚链接，并通过所述第二虚链接向所述BBR节点发送骨干域hello报文。
优选地，所述不规则域经由所述桥接域将不规则域路由信息扩散到所述骨干域包括：
所述不规则域的BBR节点经由所述桥接域的第一虚链接向所述ABR节点或ASBR节点发送包含不规则域路由信息的不规则域hello报文，以便将不规则域路由信息扩散到所述骨干域。
优选地，所述骨干域经由所述桥接域将骨干域全局路由信息扩散到所述不规则域包括：
所述骨干域的ABR节点经由所述桥接域的第二虚链接向所述BBR节点或ASBR节点发送包含骨干域全局路由信息的骨干域hello报文，以便将骨干域全局路由信息扩散到所述不规则域。
优选地，还包括：
当所述ABR单节点故障消除且所述不规则域与所述骨干域邻接时，删除建立在所述桥接域的第一虚链接和第二虚链接。
优选地，所述删除建立在所述桥接域的第一虚链接和第二虚链接包括：
当检测到所述BBR节点停止通过所述第一虚链接向所述ABR节点或ASBR节点发送不规则域hello报文时，则删除所述第一虚链接；
若在预设等待时间内，所述ABR节点或ASBR节点未收到所述BBR节点发送的不规则域hello报文时，则删除所述第二虚链接。
根据本发明的另一方面，提供了一种PTN设备中DCN不规则域互通的装置，包括：
产生不规则域模块，用于当扩容或区域边界路由器ABR单节点故障，导致网络中出现与骨干域不邻接的不规则域时，将邻接在所述不规则域与骨干域之间的普通域默认为桥接域；
互通模块，用于所述不规则域经由所述桥接域将不规则域路由信息扩散到所述骨干域，以及所述骨干域经由所述桥接域将骨干域全局路由信息扩散到所述不规则域。
优选地，所述产生不规则域模块包括：
产生BBR节点单元，用于将所述桥接域与所述不规则域邻接的路由器节点升级为桥板路由器BBR节点；
建立虚链接单元，用于所述BBR节点自动建立到所述骨干域的ABR节点或自治系统边界路由器ASBR节点的第一虚链接，并通过所述第一虚链接向所述ABR节点或ASBR节点发送包含所述桥接域ID的不规则域hello报文，以及所述ABR节点或ASBR节点接 收并根据所述不规则域hello报文中包含的桥接域ID自动建立到所述BBR节点的第二虚链接，并通过所述第二虚链接向所述BBR节点发送骨干域hello报文。
优选地，所述互通模块包括：
第一互通单元，用于所述不规则域的BBR节点经由所述桥接域的第一虚链接向所述ABR节点或ASBR节点发送包含不规则域路由信息的不规则域hello报文，以便将不规则域路由信息扩散到所述骨干域；
第二互通单元，用于所述骨干域的ABR节点经由所述桥接域的第二虚链接向所述BBR节点或ASBR节点发送包含骨干域全局路由信息的骨干域hello报文，以便将骨干域全局路由信息扩散到所述不规则域。
优选地，还包括删除虚链接单元，用于当所述ABR单节点故障消除且所述不规则域与所述骨干域邻接时，删除建立在所述桥接域的第一虚链接和第二虚链接。
本发明的实施例还提供了一种PTN设备中DCN不规则域互通的设备，包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为：
当扩容或区域边界路由器ABR单节点故障，导致网络中出现与骨干域不邻接的不规则域时，将邻接在所述不规则域与骨干域之间的普通域默认为桥接域；
所述不规则域经由所述桥接域将不规则域路由信息扩散到所述骨干域；
所述骨干域经由所述桥接域将骨干域全局路由信息扩散到所述不规则域。
本发明的实施例还提供了一种非易失性计算机可读存储介质，其中存储有指令，所述指令在由处理器执行时使所述处理器实施一种PTN设备中DCN不规则域互通的方法，所述方法包括以下步骤：
当扩容或区域边界路由器ABR单节点故障，导致网络中出现与骨干域不邻接的不规则域时，将邻接在所述不规则域与骨干域之间的普通域默认为桥接域；
所述不规则域经由所述桥接域将不规则域路由信息扩散到所述骨干域；
所述骨干域经由所述桥接域将骨干域全局路由信息扩散到所述不规则域。
与现有技术相比较，本发明的有益效果在于：
本发明有效解决了不规则区域自动互通问题，也解决了ABR的单点故障导致整个区域不可达后自动恢复的问题，达到了PTN设备间的DCN的互联互通。
附图说明
图1是本发明实施例提供的一种PTN设备中DCN不规则域互通的方法流程图；
图2是本发明实施例提供的一种PTN设备中DCN不规则域互通的装置示意图；
图3是本发明第一实施例提供的不规则域自动创建虚链接组网的示意图；
图4是本发明第二实施例提供的不规则域自动创建虚链接组网的示意图；
图5是本发明实施例提供的不规则域自动创建虚链接组网的流程图；
图6是本发明实施例提供的不规则域自动删除虚链接组网的流程图。
具体实施方式
以下结合附图对本发明的优选实施例进行详细说明，应当理解，以下所说明的优选实施例仅用于说明和解释本发明，并不用于限定本发明。
在DCN网络中包括多个设备网元，对多个网元按照可接收的网络规模进行分域，在发明中不阐述与骨干域邻接的场景，若某区域与骨干域不邻接，按照OSPF协议规定，此区域路由与其他区域路由无法相互之间学习扩散。为了解决此问题，在OSPF的域中新增一种桥接域，此桥接域与骨干域相连，将与骨干域不直接邻接的不规则域的路由信息扩散到骨干域，同时将从骨干域获得的全局路由信息扩散到此不规则域。更进一步，在OSPF的ABR和ASBR的基础上本发明提出BBR的概念，所谓BBR是指在桥接域中与不规则域邻接的路由器节点。其中，将没有直接与骨干域相连的普通域称作不规则域。
图1显示了本发明实施例提供的一种PTN设备中DCN不规则域互通的方法流程图，如图1所示，包括以下步骤：
步骤S101：当扩容或区域边界路由器ABR单节点故障，导致网络中出现与骨干域不邻接的不规则域时，将邻接在所述不规则域与骨干域之间的普通域默认为桥接域；
步骤S102：所述不规则域经由所述桥接域将不规则域路由信息扩散到所述骨干域；
步骤S103：所述骨干域经由所述桥接域将骨干域全局路由信息扩散到所述不规则域。
其中，所述将邻接在所述不规则域与骨干域之间的普通域默认为桥接域包括：将所述桥接域与所述不规则域邻接的路由器节点升级为桥板路由器BBR节点；所述BBR节点自动建立到所述骨干域的ABR节点或自治系统边界路由器ASBR节点的第一虚链接，并通过所述第一虚链接向所述ABR节点或ASBR节点发送包含所述桥接域ID的不规则域hello报文；所述ABR节点或ASBR节点接收并根据所述不规则域hello报文中包含的桥接域ID自动建立到所述BBR节点的第二虚链接，并通过所述第二虚链接向所述BBR节点发送骨干域hello报文。
具体地说，所述不规则域经由所述桥接域将不规则域路由信息扩散到所述骨干域包括：所述不规则域的BBR节点经由所述桥接域的第一虚链接向所述ABR节点或ASBR节点发送包含不规则域路由信息的不规则域hello报文，以便将不规则域路由信息扩散到所述骨干域。所述骨干域经由所述桥接域将骨干域全局路由信息扩散到所述不规则域包括：所述骨干域的ABR节点经由所述桥接域的第二虚链接向所述BBR节点或ASBR节点发送包含骨干域全局路由信息的骨干域hello报文，以便将骨干域全局路由信息扩散到所述不规则域。
本发明还包括：当所述ABR单节点故障消除且所述不规则域与所述骨干域邻接时， 删除建立在所述桥接域的第一虚链接和第二虚链接。其中，所述删除建立在所述桥接域的第一虚链接和第二虚链接包括：当检测到所述BBR节点停止通过所述第一虚链接向所述ABR节点或ASBR节点发送不规则域hello报文时，则删除所述第一虚链接；若在预设等待时间内，所述ABR节点或ASBR节点未收到所述BBR节点发送的不规则域hello报文时，则删除所述第二虚链接。
图2显示了本发明实施例提供的一种PTN设备中DCN不规则域互通的装置示意图，如图2所示，包括：产生不规则域模块201和互通模块202。所述产生不规则域模块201，用于当扩容或区域边界路由器ABR单节点故障，导致网络中出现与骨干域不邻接的不规则域时，将邻接在所述不规则域与骨干域之间的普通域默认为桥接域；所述互通模块202，用于所述不规则域经由所述桥接域将不规则域路由信息扩散到所述骨干域，以及所述骨干域经由所述桥接域将骨干域全局路由信息扩散到所述不规则域。
具体地说，所述产生不规则域模块201包括：产生BBR节点单元，用于将所述桥接域与所述不规则域邻接的路由器节点升级为桥板路由器BBR节点；建立虚链接单元，用于所述BBR节点自动建立到所述骨干域的ABR节点或自治系统边界路由器ASBR节点的第一虚链接，并通过所述第一虚链接向所述ABR节点或ASBR节点发送包含所述桥接域ID的不规则域hello报文，以及所述ABR节点或ASBR节点接收并根据所述不规则域hello报文中包含的桥接域ID自动建立到所述BBR节点的第二虚链接，并通过所述第二虚链接向所述BBR节点发送骨干域hello报文。所述互通模块202包括：第一互通单元，用于所述不规则域的BBR节点经由所述桥接域的第一虚链接向所述ABR节点或ASBR节点发送包含不规则域路由信息的不规则域hello报文，以便将不规则域路由信息扩散到所述骨干域；第二互通单元，用于所述骨干域的ABR节点经由所述桥接域的第二虚链接向所述BBR节点或ASBR节点发送包含骨干域全局路由信息的骨干域hello报文，以便将骨干域全局路由信息扩散到所述不规则域。
本发明还包括删除虚链接单元，用于当所述ABR单节点故障消除且所述不规则域与所述骨干域邻接时，删除建立在所述桥接域的第一虚链接和第二虚链接。
图3显示了本发明第一实施例提供的不规则域自动创建虚链接组网的示意图，如图3所示，区域2因网络扩容没有与骨干域0邻接，属于不规则区域，区域2中的节点执行如下：区域2组播hello报文，运行正常的OSPF协议，在区域2内部广播LSA(Link-State Advertisement，链路状态广播)，B节点接收到区域2的路由更新完毕之后，发现区域2中没有ABR，同时B节点属于区域1，而区域1中存在ABR，将B节点升级为BBR节点。B节点保存有整个网络的路由信息，它从中选择一个属于区域1的ABR，在此图中选择节点A，然后自动建立到节点A的第一虚链接，同时B节点向A节点发送hello报文，hello报文中包含有桥接域的区域号，此例中的桥接域为区域1。节点A收到节点B的hello报文之后，发现是特殊的hello报文，解析出桥接域的区域号，根据hello报文中的桥接域的区域号自动建立到节点B的第二虚链接，同时也向节点B发送hello报文。节点A和节点 B之间的虚链接已经建立，随后可以进行标准的OSPF协商，待协商完毕，节点B升级为ABR，这样区域2对于整个网络来说已经可达。
图4显示了本发明第二实施例提供的不规则域自动创建虚链接组网的示意图，如图4所示，整个OSPF网络中有三个域，区域1和区域2都与骨干域0邻接，节点A和节点B都是ABR，节点C分别与区域1和区域2邻接，在正常情况下，都是正常的OSPF区域，若节点B发生故障且节点B是区域2唯一的ABR，则区域2则变为不规则区域，被整个网络孤立起来。那么此时区域2中的节点执行如下步骤：节点B故障后，hello保活报文超时，区域2内会广播LSA的更新报文；节点C收到LSA更新信息，感知到区域2已经变成不规则区域，这个区域中没有ABR，而区域1中还存在ABR，则节点C升为BBR节点；升为BBR的节点C自动创建到ABR节点也就是节点A的虚链接，同时发送请求建立虚链接的私有报文，报文中捎带桥接域的区域ID(在本实例中是区域1)和节点C的路由ID；节点A收到请求报文后，解析出桥接域的域ID，然后创建到节点C的虚链接，同时发送hello到节点C；两端的虚链接已经建立完毕，接下来可以进行正常的OSPF协商，待协商完毕，节点C升级为ABR，区域2此时可以看作与区域0邻接，这样对于区域2而言，整个网络可达。
图5显示了本发明实施例提供的不规则域自动创建虚链接组网的流程图，如图5所示，包括以下步骤：
步骤S501：建立BBR节点；
在一个域中若收到的LSA中的节点信息中存在ABR或者ASBR，且自己不是骨干域，则将自己的域默认为桥接域。在桥接域中的节点若与不规则区域邻接，则此节点被视为BBR。
步骤S502：BBR节点自动建立与ABR的虚链接；
在选定BBR后，BBR自动建立与ABR或者ASBR的虚链接。
步骤S503：BBR广播私有的hello报文，hello报文中捎带桥接域的区域ID；
在BBR自动建立与ABR或者ASBR的虚链接后，同时广播hello报文，hello报文通过此虚链接单播到ABR，在此hello报文的最后捎带上ABR创建虚链接所需要的信息(桥接域的域ID)。
步骤S504：ABR收到此hello报文，根据桥接域ID建立与BBR的虚链接；
ABR或者ASBR接收hello报文，并根据hello报文中的桥接域ID建立到BBR的虚链接。
步骤S505：进行正常的OSPF交互。
在两端节点都已经建立起虚链路后，进行正常的OSPF交互。即在两端的虚链接建立起来后，骨干域将扩展到BBR节点，不规则域与其他区域可达。
图6显示了本发明实施例提供的不规则域自动删除虚链接组网的流程图，如图6所示，需要将之前建立的虚链接删除，包括以下步骤：
步骤S601：BBR检测到区域内有节点与区域0邻接；
在第二实施例的基础上，节点B故障功能恢复后，此时区域2作为唯一的ABR的节点B已经直接与骨干域邻接。
步骤S602：BBR停止通过虚链接向ABR发送hello包，同时删除到ABR的虚链接
当检测到所述BBR节点停止通过所述第一虚链接向所述ABR节点发送不规则域hello报文时，则删除所述第一虚链接，即BBR到ABR的虚链接。
步骤S603：ABR检测到BBR的hello包超时，删除到BBR的虚链接。
若在预设等待时间内，所述ABR节点未收到所述BBR节点发送的不规则域hello报文时，则删除所述第二虚链接，即ABR到BBR的虚链接。
也就是说，在图4的基础上，由于网络的变化，之前与骨干域非邻接的不规则域变为普通域，节点C感知到节点B恢复，则BBR自动删除到ABR的虚链接，ABR感知到虚链接down也自动删除到BBR的虚链接。
依据本发明实施例的另一个方面，还提供了一种PTN设备中DCN不规则域互通的设备，包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为：
当扩容或区域边界路由器ABR单节点故障，导致网络中出现与骨干域不邻接的不规则域时，将邻接在所述不规则域与骨干域之间的普通域默认为桥接域；
所述不规则域经由所述桥接域将不规则域路由信息扩散到所述骨干域；
所述骨干域经由所述桥接域将骨干域全局路由信息扩散到所述不规则域。
依据本发明实施例的另一个方面，还提供了一种非易失性计算机可读存储介质，其中存储有指令，所述指令在由处理器执行时使所述处理器实施一种PTN设备中DCN不规则域互通的方法，所述方法包括以下步骤：
当扩容或区域边界路由器ABR单节点故障，导致网络中出现与骨干域不邻接的不规则域时，将邻接在所述不规则域与骨干域之间的普通域默认为桥接域；
所述不规则域经由所述桥接域将不规则域路由信息扩散到所述骨干域；
所述骨干域经由所述桥接域将骨干域全局路由信息扩散到所述不规则域。
综上所述，本发明具有以下技术效果：
本发明可以有效解决不规则区域自动互通问题，也解决了ABR的单点故障导致整个区域不可达后自动恢复的问题。
尽管上文对本发明进行了详细说明，但是本发明不限于此，本技术领域技术人员可以根据本发明的原理进行各种修改。因此，凡按照本发明原理所作的修改，都应当理解为落入本发明的保护范围。
工业实用性
本申请的DCN不规则域互通的方法及装置可以应用于PTN设备中，能够实现不规则区域自动互通，也解决了ABR的单点故障导致整个区域不可达后自动恢复的问题，达到了PTN设备间的DCN的互联互通。

Claims (11)

  1. 一种分组传送网PTN设备中数据通信网络DCN不规则域互通的方法，其中，包括以下步骤：
    当扩容或区域边界路由器ABR单节点故障，导致网络中出现与骨干域不邻接的不规则域时，将邻接在所述不规则域与骨干域之间的普通域默认为桥接域；
    所述不规则域经由所述桥接域将不规则域路由信息扩散到所述骨干域；
    所述骨干域经由所述桥接域将骨干域全局路由信息扩散到所述不规则域。
  2. 根据权利要求1所述的方法，其中，所述将邻接在所述不规则域与骨干域之间的普通域默认为桥接域包括：
    将所述桥接域与所述不规则域邻接的路由器节点升级为桥板路由器BBR节点；
    所述BBR节点自动建立到所述骨干域的ABR节点或自治系统边界路由器ASBR节点的第一虚链接，并通过所述第一虚链接向所述ABR节点或ASBR节点发送包含所述桥接域ID的不规则域hello报文；
    所述ABR节点或ASBR节点接收并根据所述不规则域hello报文中包含的桥接域ID自动建立到所述BBR节点的第二虚链接，并通过所述第二虚链接向所述BBR节点发送骨干域hello报文。
  3. 根据权利要求2所述的方法，其中，所述不规则域经由所述桥接域将不规则域路由信息扩散到所述骨干域包括：
    所述不规则域的BBR节点经由所述桥接域的第一虚链接向所述ABR节点或ASBR节点发送包含不规则域路由信息的不规则域hello报文，以便将不规则域路由信息扩散到所述骨干域。
  4. 根据权利要求3所述的方法，其中，所述骨干域经由所述桥接域将骨干域全局路由信息扩散到所述不规则域包括：
    所述骨干域的ABR节点经由所述桥接域的第二虚链接向所述BBR节点或ASBR节点发送包含骨干域全局路由信息的骨干域hello报文，以便将骨干域全局路由信息扩散到所述不规则域。
  5. 根据权利要求4所述的方法，其中，还包括：
    当所述ABR单节点故障消除且所述不规则域与所述骨干域邻接时，删除建立在所述桥接域的第一虚链接和第二虚链接。
  6. 根据权利要求5所述的方法，其中，所述删除建立在所述桥接域的第一虚链接和第二虚链接包括：
    当检测到所述BBR节点停止通过所述第一虚链接向所述ABR节点或ASBR节点发送不规则域hello报文时，则删除所述第一虚链接；
    若在预设等待时间内，所述ABR节点或ASBR节点未收到所述BBR节点发送的不规则域hello报文时，则删除所述第二虚链接。
  7. 一种PTN设备中DCN不规则域互通的装置，其中，包括：
    产生不规则域模块，设置为当扩容或区域边界路由器ABR单节点故障，导致网络中出现与骨干域不邻接的不规则域时，将邻接在所述不规则域与骨干域之间的普通域默认为桥接域；
    互通模块，设置为所述不规则域经由所述桥接域将不规则域路由信息扩散到所述骨干域，以及所述骨干域经由所述桥接域将骨干域全局路由信息扩散到所述不规则域。
  8. 根据权利要求7所述的装置，其中，所述产生不规则域模块包括：
    产生BBR节点单元，设置为将所述桥接域与所述不规则域邻接的路由器节点升级为桥板路由器BBR节点；
    建立虚链接单元，设置为所述BBR节点自动建立到所述骨干域的ABR节点或自治系统边界路由器ASBR节点的第一虚链接，并通过所述第一虚链接向所述ABR节点或ASBR节点发送包含所述桥接域ID的不规则域hello报文，以及所述ABR节点或ASBR节点接收并根据所述不规则域hello报文中包含的桥接域ID自动建立到所述BBR节点的第二虚链接，并通过所述第二虚链接向所述BBR节点发送骨干域hello报文。
  9. 根据权利要求8所述的装置，其中，所述互通模块包括：
    第一互通单元，设置为所述不规则域的BBR节点经由所述桥接域的第一虚链接向所述ABR节点或ASBR节点发送包含不规则域路由信息的不规则域hello报文，以便将不规则域路由信息扩散到所述骨干域；
    第二互通单元，设置为所述骨干域的ABR节点经由所述桥接域的第二虚链接向所述BBR节点或ASBR节点发送包含骨干域全局路由信息的骨干域hello报文，以便将骨干域全局路由信息扩散到所述不规则域。
  10. 根据权利要求9所述的装置，其中，还包括删除虚链接单元，设置为当所述ABR单节点故障消除且所述不规则域与所述骨干域邻接时，删除建立在所述桥接域的第一虚链接和第二虚链接。
  11. 一种PTN设备中DCN不规则域互通的设备，包括：
    处理器；
    用于存储处理器可执行指令的存储器；
    其中，所述处理器被配置为：
    当扩容或区域边界路由器ABR单节点故障，导致网络中出现与骨干域不邻接的不规则域时，将邻接在所述不规则域与骨干域之间的普通域默认为桥接域；
    所述不规则域经由所述桥接域将不规则域路由信息扩散到所述骨干域；
    所述骨干域经由所述桥接域将骨干域全局路由信息扩散到所述不规则域。
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004012414A1 (en) * 2002-07-26 2004-02-05 Marconi Uk Intellectual Property Ltd System and method for communicating data between networks operating under different protocols
CN1825814A (zh) * 2005-02-25 2006-08-30 华为技术有限公司 一种数据通信网络分域及路由信息扩散的方法
CN103595635A (zh) * 2012-08-13 2014-02-19 中兴通讯股份有限公司 基于分组光传送网设备的数据通信网报文转发方法和装置
CN104506438A (zh) * 2015-01-09 2015-04-08 烽火通信科技股份有限公司 一种dcn自通的方法及系统

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101179449B (zh) * 2007-11-27 2010-05-26 华为技术有限公司 一种ip网络中的监听系统、设备及方法
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CN103929326B (zh) * 2014-03-18 2017-06-13 烽火通信科技股份有限公司 通信网传输类告警统一分析的装置及方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004012414A1 (en) * 2002-07-26 2004-02-05 Marconi Uk Intellectual Property Ltd System and method for communicating data between networks operating under different protocols
CN1825814A (zh) * 2005-02-25 2006-08-30 华为技术有限公司 一种数据通信网络分域及路由信息扩散的方法
CN103595635A (zh) * 2012-08-13 2014-02-19 中兴通讯股份有限公司 基于分组光传送网设备的数据通信网报文转发方法和装置
CN104506438A (zh) * 2015-01-09 2015-04-08 烽火通信科技股份有限公司 一种dcn自通的方法及系统

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