CN101145950B - A topology management method based on multi-service transmission node - Google Patents
A topology management method based on multi-service transmission node Download PDFInfo
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- CN101145950B CN101145950B CN2007101015269A CN200710101526A CN101145950B CN 101145950 B CN101145950 B CN 101145950B CN 2007101015269 A CN2007101015269 A CN 2007101015269A CN 200710101526 A CN200710101526 A CN 200710101526A CN 101145950 B CN101145950 B CN 101145950B
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Abstract
The invention discloses a topology management method based on multitask transfer node, capable of effectively representing the actual network constructing status of MSTP network. The method comprises acquiring topologic information by one or more MSTP nodes and all MSTP nodes connected with the MSTP nodes through the exchange of messages; and acquiring the desired topologic information from one or more MSTP nodes by a network management system. Compared with prior art, the invention can transmit message among multitask transfer nodes, construct the connection relationship between the core node and the non-core node, and form a real-time topologic structure information on the core node, thereby effectively and immediately representing the actual network constructing status of the MSTP network.
Description
Technical field
The present invention relates to SDH (Synchronous Digital Hierarchy) (SDH) MSTP (Multi-ServiceTransport Platform is called for short MSTP) business field, relate in particular to topological management method based on the MSTP of SDH.
Background technology
In recent years, fast the Internet business that increases has promoted the demand of data service, is used widely at field of telecommunications based on the MSTP of SDH.But the MSTP number of nodes is increasing on the interior optical transport network of field of telecommunications, and the internodal networking of MSTP becomes increasingly complex and be huge.
For the management of these increasing MSTP nodes, method comparatively commonly used at present is to manage by centralized network management system (nms), by the internodal time slot interconnection of each MSTP of NMS static configuration.But growing along with the MSTP number of nodes can not complete sum be described the internodal data communication networking of MSTP situation in the original NMS system intuitively.
Because using NMS system management MSTP node is the internodal connection of each MSTP of static configuration, so requiring the webmaster signalling path of the network element node at NMS system and each MSTP node place must be proper communication, in case interrupting appears in the webmaster signalling path, even this MSTP node is in normal communication state, this moment, the NMS system also lost the control to the MSTP node.
In addition, because the data communication networking is complicated and changeable, can only reflects the internodal networking configuring condition of current MSTP by the NMS system, and can not truly reflect the internodal network actual conditions of current MSTP.
Summary of the invention
Technical problem to be solved by this invention provides a kind of topological management method based on MSTP, can reflect the true networking situation of MSTP network effectively.
In order to solve the problems of the technologies described above, the invention provides a kind of topological management method based on MSTP, described MSTP is hereinafter to be referred as the MSTP node, one or more MSTP nodes and its all MSTP nodes that are connected down obtain topology information alternately by message, on described one or more MSTP node, form the topology information structure of whole M STP network, network management system is obtained the topology information that needs from described one or more MSTP nodes, wherein said one or more MSTP nodes are core node, and other MSTP nodes that described core node connects down are non-core node.
Further, described non-core node initiatively sends logon message to core node, and described core node obtains the topology information of non-core node by the logon message of receiving.
Further, said method comprising the steps of:
(a) a MSTP node sends query message to all MSTP nodes that a described MSTP node connects down, comprises destination address, the source address of this query message in the described query message;
(b) after the 2nd MSTP node is received the query message of MSTP node transmission, return first logon message to a described MSTP node, the log-on message that comprises described the 2nd MSTP node in described first logon message, perhaps, the log-on message that also comprises other MSTP nodes that connect under described the 2nd MSTP node;
(c) after a MSTP node is received logon message, analyze this logon message, obtain topology information and preservation;
(d) network management system is obtained topology information from a MSTP node.
Method as claimed in claim 4 is characterized in that, in described step (a), a described MSTP node regularly sends query message.
Further, in described step (b), after described the 2nd MSTP node is received the query message of MSTP node transmission, transmit this query message to all MSTP nodes that described the 2nd MSTP node connects down; After receiving query message, the MSTP node that described the 2nd MSTP node connects down returns logon message to the 2nd MSTP node.
Further, after described the 2nd MSTP node is received the logon message of the MSTP node that connects under described the 2nd MSTP node, re-construct logon message, the discrepancy port numbers of self identification symbol and the logon message received is added in the logon message of neotectonics to sending to a described MSTP node again.
Further, the MSTP node sends logon message by the query message port, and described query message port is meant the port of receiving query message, if no query message port then sends logon message to all of the port.
Further, the identifier that comprises this register node in the described log-on message; Described topology information is that keyword is set up with this identifier.
Further, if a described MSTP node is not received the logon message of certain node, the topology information of then deleting this node in the given time.
Further, by between described core node and non-core node, sending configuration information, or described non-core node is carried out program upgrade, realize management each MSTP node by described core node.
Compared with prior art, the present invention sends message between the multi-service transmission node, sets up core node and non-core internodal communication relationship, by the continual renovation of message, forms a real-time topology information on core node.The method of the invention not only can reflect the true networking situation of MSTP network in time, effectively, also can be by between core node and non-core node, sending configuration information, or non-core node is carried out program upgrade etc. by core node, realization is effectively managed each MSTP node, by whether obtaining topology information the internodal link communication situation of each MSTP is diagnosed simultaneously.
Description of drawings
Fig. 1 is a present embodiment MSTP querying node registration process schematic diagram;
Fig. 2 is that present embodiment MSTP node sends protocol massages part flow chart;
Fig. 3 is that present embodiment MSTP node receives the protocol massages flow chart;
Fig. 4 is the process chart of present embodiment core MSTP node;
Fig. 5 is the process chart of the non-core MSTP node of present embodiment;
Fig. 6 is the star net forming schematic diagram of present embodiment MSTP equipment.
Embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
The present invention is according to the networking frame structure of MSTP node, and operation registration and handshake procedure between each MSTP node by the Collection and analysis to protocol frame, form whole M STP network topological information structure on some or a plurality of MSTP nodes.The user can obtain the networking truth of current MSTP network by NMS system or other modes from these MSTP node devices.
As shown in Figure 1, suppose that MSTP2 is MSTP1 subordinate's node, MSTP1 sends query message to its all MSTP that connect down; After MSTP2 receives query message, can directly return logon message (carrying the log-on message of oneself in the logon message) to MSTP1, again to other MSTP node forwarding inquiries message of its subordinate, perhaps, can first forwarding inquiries message, MSTP2 returns logon message then, and the message that returns can only carry the log-on message of oneself, perhaps also can carry its log-on message of other MSTP nodes down.Here, MSTP1 is equivalent to a core node, and it obtains the topology information of MSTP2 by logon message, described topology information can comprise whole log-on messages as required, also the part log-on message can be only comprised, and except that log-on message, also other information can be comprised.Network management system can be directly and core node mutual, obtain its topology information of all MSTP meshed networks down.
For all MSTP nodes can pre-configured identical transmission, receive flow process.The message transmission flow as shown in Figure 2, certain MSTP node is determined himself attribute (comprising core node or non-core node) in advance before needs send message, if core node then sends query message to all connectivity ports, timing information is set simultaneously, is used to provide the effective time of this message; For non-core node, send mode be can set and active send mode or passive send mode are, if active send mode, then regularly send logon message (if there is not the query message receiving port in present node to the query message receiving port, then send logon message to all of the port), described query message receiving port is meant the port of once receiving query message; If passive send mode, node then is in waits for the reception message status, only receives that query message just can send logon message.
Message receives flow process as shown in Figure 3, and certain MSTP node is determined himself attribute after receiving message in advance, if core node and what receive is logon message is then resolved this message and obtained and preserve topology information; If non-core node, take different processing according to the difference of the type of message that receives, if what receive is query message, then to construct logon message and return, also bearing work to lower level node forwarding inquiries message for the non-core node in topological structure middle level this moment; If what receive is logon message, then this logon message is forwarded to upper layer node.
If for all MSTP nodes pre-configured identical transmission, receive flow process, then network management system can dynamically arrange the core node in the network as required, and need not each core node is made amendment, on the other hand, also can set in advance core node and non-core node, adopt different transmissions, receive flow process at different attributes.Receive flow process with respect to aforementioned transmission, carry out oneself flow process separately, need not to judge again the attribute of oneself for core node and non-core node.
As shown in Figure 4, for core node, regularly send query message, if do not receive response message in the given time, think that then downstream node lost efficacy, the topology information that deletion is preserved from transmit port, if port receives logon message, then analyze this message, obtain topology information and preservation.Described topology information can comprise one or more of following information: MSTP node identifier, message sink mouth, apart from this node jumping figure, non-core MSTP node identifier, non-core node inbound port, non-core node outbound port can adopt the form of topology information table to preserve.
As shown in Figure 5, for non-core node, after port receives query message, then send logon message from this port (being the query message port) of receiving query message, and when needed this query message is forwarded from other connectivity ports, if receive logon message in the given time, then the log-on message with this node adds in the logon message, and this amended logon message is sent from the receiving port of receiving query message.Also can first forwarding inquiries message for non-core node, and then return logon message.
Fig. 6 is a kind of MSTP star net forming figure, and wherein MSTP A is a core node, and other MSTPB, MSTP C, MSTP D, MSTP E, MSTP F, MSTP G node are non-core node and are set to passive send mode that network management system is at MSTP A point access network.With MSTP A, MSTPB, MSTP D node is that example describes, and comprises the steps:
Step 601, MSTP A node initiatively sends query message from port one, 2,3, field in the query message is as shown in table 1, and described query message comprises query message destination address and query message source address at least, and described query message destination address can adopt broadcast address;
Field in table 1 query message
| Query message destination address (broadcast address) |
| The query message source address |
| Type of message (inquiry) |
| Message jumping figure (the maximum jumping figure of supporting) |
| The core node identifier |
Step 602, MSTP B node receives the query message that MSTP A node sends over from port one, port one is labeled as the query message receiving port, construct logon message then and send from port one, field in this logon message is as shown in table 2, and described logon message comprises destination address, source address and the identifier of himself at least;
If MSTP B lower floor also has non-core node, then to its lower level node MSTP D and MSTP E forwarding inquiries message, the field that comprises in the query message is as shown in table 1;
MSTP B can report its logon message immediately after the query message of receiving MSTP A, again to lower level node forwarding inquiries message, perhaps earlier to lower level node forwarding inquiries message, send logon message to MSTP A again, can only carry the log-on message of oneself in the described logon message, perhaps also can carry the log-on message of other MSTP nodes of its lower floor.
When MSTP B node receives the logon message that MSTP D node sends over from port 2 after, analyze this logon message and add self identification symbol, port 2 (inbound port of MSTP B node), port one (outbound port of MSTP D node) to this logon message afterbody, after re-constructing logon message, send from port one, still comprise listed field in the table 2 in the logon message that re-constructs;
Field in table 2 logon message
| Logon message destination address (broadcast address) |
| Address, logon message seedbed |
| Type of message (registration) |
| Message jumping figure (actual) through jumping figure |
| The core node identifier |
| The register node identifier |
| Through number of nodes |
| Logon message destination address (broadcast address) |
| Non-core |
| Non-core node |
| Non-core node |
| …… |
| Non-core node identifier n |
| Non-core node inbound port n |
| Non-core node outbound port n |
Step 603, MSTP A node receives the logon message of MSTP B node from port one, analyzes this message, is that the topology information list item set up in keyword with the register node identifier in this message, and is as shown in table 3;
Core node can be set up a topology information list item for each non-core node, perhaps sets up a topology information list item for all non-core nodes under it.
Table 3 core node MSTPA goes up the topology information of the MSTP B that preserves
| Register node identifier=MSTP B identifier |
| Receiving port=port one |
| Jumping figure=1 apart from this node |
| Non-core node identifier=MSTP B identifier |
| Non-core node inbound port=NULL |
| Non-core node outbound port=port one |
MSTP A node receives the logon message of MSTP D node by MSTP B node from port one, analyzes this message, is that the topology information list item set up in keyword with the register node identifier in this message, and is as shown in table 4.
The topology information of the MSTP D that preserves on the table 4 core node MSTP A
| Register node identifier=MSTP D identifier |
| Receiving port=port one |
| Jumping figure=2 apart from this node |
| Register node identifier=MSTP D identifier |
| Non-core node identifier=MSTP B identifier |
| Non-core node inbound port= |
| Non-core node outbound port=port one |
| Non-core node identifier=MSTP D identifier |
| Non-core node inbound port=NULL |
| Non-core node outbound port=port one |
If MSTP A node is not received the logon message of MSTP B node within a certain period of time, delete list 3 data of preserving then are not if MSTP A node is received the logon message of MSTP D node, then delete list 4 data of preserving within a certain period of time.MSTP A sends the one or many query message again after perhaps arriving the scheduled time, does not delete topology information again if also receive logon message.
Step 604, network management system (webmaster access point or control desk) is obtained the current actual sets net topology of this node lower network by the webmaster signaling from MSTP A node.
Should be noted that; the present invention also can have other multiple enforcement and extended mode; under the situation that does not deviate from spirit and scope of the invention; those of ordinary skill in the art obviously can make various corresponding changes and expansion to the present invention, but these changes and expansion all should belong to the scope that claims of the present invention are protected.
For example, a plurality of core nodes can be set, network management system is by obtaining the topology information of its lower network alternately with certain core node, respectively with the mutual current actual networking information that obtains whole network of all core nodes, each core node directly also can be set to share topology information, like this, network management system and certain core node can obtain the networking situation of the network of other core node management alternately.
For another example, on core node except being that keyword is set up the topology information list item with the register node identifier, can also be that the topology information table set up in keyword with other information, at this moment, non-core node need be added on this information and send to core node in the logon message.
For another example, can between core node and non-core node, send configuration information, or non-core node be carried out program upgrade, realize management each MSTP node by core node.
For another example, the inventive method both can be moved in nonspecific management domain, also can move in a certain specific management domain, as moving in vlan domain.
Claims (10)
1. topological management method based on MSTP, described MSTP is hereinafter to be referred as the MSTP node, one or more MSTP nodes and its all MSTP nodes that are connected down obtain topology information alternately by message, on described one or more MSTP node, form the topology information structure of whole M STP network, network management system is obtained the topology information that needs from described one or more MSTP nodes, wherein said one or more MSTP nodes are core node, and other MSTP nodes that described core node connects down are non-core node.
2. the method for claim 1 is characterized in that, described non-core node initiatively sends logon message to core node, and described core node obtains the topology information of non-core node by the logon message of receiving.
3. the method for claim 1 is characterized in that, said method comprising the steps of:
(a) a MSTP node sends query message to all MSTP nodes that a described MSTP node connects down, comprises destination address, the source address of this query message in the described query message;
(b) after the 2nd MSTP node is received the query message of MSTP node transmission, return first logon message to a described MSTP node, the log-on message that comprises described the 2nd MSTP node in described first logon message, perhaps, the log-on message that also comprises other MSTP nodes that connect under described the 2nd MSTP node;
(c) after a MSTP node is received logon message, analyze this logon message, obtain topology information and preservation;
(d) network management system is obtained topology information from a MSTP node.
4. method as claimed in claim 3 is characterized in that, in described step (a), a described MSTP node regularly sends query message.
5. method as claimed in claim 3 is characterized in that, in described step (b), after described the 2nd MSTP node is received the query message of MSTP node transmission, transmits this query message to all MSTP nodes that described the 2nd MSTP node connects down; After receiving query message, the MSTP node that described the 2nd MSTP node connects down returns logon message to the 2nd MSTP node.
6. method as claimed in claim 5, it is characterized in that, after described the 2nd MSTP node is received the logon message of the MSTP node that connects under described the 2nd MSTP node, re-construct logon message, the discrepancy port numbers of self identification symbol and the logon message received is added in the logon message of neotectonics to sending to a described MSTP node again.
7. as claim 2 or 3 described methods, it is characterized in that the MSTP node sends logon message by the query message port, described query message port is meant the port of receiving query message, if no query message port then sends logon message to all of the port.
8. method as claimed in claim 3 is characterized in that, comprises the identifier of this register node in the described log-on message; Described topology information is that keyword is set up with this identifier.
9. method as claimed in claim 4 is characterized in that, if a described MSTP node is not received the logon message of certain node, the topology information of then deleting this node in the given time.
10. the method for claim 1 is characterized in that, by sending configuration information between described core node and non-core node, or by described core node described non-core node is carried out program upgrade, realizes the management to each MSTP node.
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| CN101631148A (en) * | 2009-08-21 | 2010-01-20 | 上海奈凯电子科技有限公司 | Communication method for allocating dynamic addresses in serial communication protocols |
| CN103051477A (en) * | 2012-12-24 | 2013-04-17 | 中兴通讯股份有限公司 | Network topology automatic acquisition method and system, and network management system |
| CN104639360B (en) * | 2013-11-14 | 2019-03-29 | 中兴通讯股份有限公司 | The method and network element device of network is added in a kind of control network element device |
| US9712408B2 (en) * | 2014-03-17 | 2017-07-18 | Telefonaktiebolaget L M Ericsson (Publ) | Bandwidth management in a content distribution network |
| CN106489253B (en) * | 2014-08-20 | 2019-10-18 | 华为技术有限公司 | Intermediate node, infrastructure node and M2M service message retransmission method |
| CN104184624A (en) * | 2014-09-19 | 2014-12-03 | 上海斐讯数据通信技术有限公司 | Network topology searching system and method |
| CN115333946B (en) * | 2022-07-28 | 2024-03-08 | 深圳海星智驾科技有限公司 | Node query method, device and equipment of robot operating system |
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