CN115296987B - Automatic network element management method and system for SDH equipment - Google Patents
Automatic network element management method and system for SDH equipment Download PDFInfo
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- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0876—Aspects of the degree of configuration automation
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- H—ELECTRICITY
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- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
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Abstract
The application relates to a SDH equipment network element automatic management method and a system, which comprises the following steps: determining a unique physical interface in the network element to open a network element management port and an Ethernet channel to realize data forwarding; the on-line network element interacts messages with the off-line network element through a DCCR channel and communicates with the network management system through an Ethernet channel so as to drive the off-line network element in the same subnet to automatically conduct on-line. The method can solve the problems that the new provisioning is difficult to match with complex route planning and difficult to automatically provision in the related technology.
Description
Technical Field
The application relates to the technical field of SDH equipment and management networks, in particular to an automatic network element management method and system for SDH equipment.
Background
The management network of conventional SDH (Synchronous Digital Hierarchy ) devices is implemented using DCC channels (Data Communication Channel, data communication channels), which provide the physical basis for the communication for SDH network management.
With the development of SDH technology, a control plane is introduced into an SDH optical transport network, and the introduction of the control plane requires that a device provide a channel for constructing the control plane network, and the channel is usually carried by a multiplexing segment data path byte (DCCM), so that OAM information for transmission is usually carried by a regeneration segment data path byte (DCCR), and the bandwidth provided is only 192kbit/s. However, the novel SDH equipment has high concentration and large cross capacity, and needs to transmit more OAM information such as configuration, alarm, performance, state and the like. The above bandwidth has not been able to meet the requirements of the new SDH device.
In the related art, an EMS (Element Management System, network management system) accesses a customer DCN network through a backbone three-layer switch, an SDH equipment gateway network element is connected with the customer DCN through the backbone three-layer switch, a customer distributes DCN IP to the gateway network element, the network element hung below the gateway network element is managed under the scene, an OAM package forwarding is needed to be carried out at an application layer of equipment software or a tunnel between the gateway network element and the EMS is needed to be established at the network layer, the process of the management is complicated and the engineering maintenance difficulty is increased. In addition, in order to reduce the engineering opening difficulty, the related technology needs newly opened equipment to automatically learn the management network parameter information of the neighbor network element, and because the network element upper pipe needs to carry out complex routing protocol configuration and is based on the flexibility of the routing protocol, the newly added equipment is difficult to match with complex routing planning by learning the neighbor management network information to generate network parameters, and the automatic opening is difficult to achieve.
Disclosure of Invention
The embodiment of the application provides a method and a system for automatically feeding network elements of SDH equipment, which are used for solving the problems that new equipment is difficult to match with complex route planning and is difficult to automatically switch on in the related technology.
The embodiment of the application provides an automatic SDH equipment network element management method, which is characterized by comprising the following steps:
determining a unique physical interface in the network element to open a network element management port and an Ethernet channel to realize data forwarding;
the on-line network element interacts messages with the off-line network element through a DCCR channel and communicates with the network management system through an Ethernet channel so as to drive the off-line network element in the same subnet to automatically conduct on-line.
In some embodiments, the determining the unique physical interface in the network element to open the network element management port and the ethernet channel to implement data forwarding includes the steps of:
calculating the cost value of each interface in the network element according to the slot position information, the interface type and the port number of the network element;
and selecting the interface with the minimum cost value as the unique physical interface.
In some embodiments, the above-mentioned network element with the network element without the pipe through DCCR channel and the ethernet channel is used to communicate with the network management system, so as to drive the network element without the pipe in the same subnet to automatically go up the pipe, which includes the following steps:
the network element to be on the upper tube carries out message interaction with the neighbor network element on the upper tube through a DCCR channel so as to determine the network element for the upper tube to substitute the report and forwards the equipment information of the network element per se through the neighbor network element on the upper tube;
the network management system receives the equipment information of the network element to be managed forwarded by the upper management report-substituting network element through an Ethernet channel, determines network configuration information of each site between the gateway network element and the network element to be managed, and transmits the network configuration information to the corresponding network element, wherein the network configuration information is used for opening the Ethernet channel between the network element to be managed and the gateway network element;
and the network element to be managed receives the corresponding network configuration information from the network element to be managed instead of the report to realize automatic management.
In some embodiments, the to-be-managed network element performs message interaction with an already-managed neighbor network element through a DCCR channel to determine an managed proxy network element and forwards equipment information of its own network element through the managed neighbor network element, including the steps of:
the network element on the network floods the neighbor network element with the network parameter information of the network element on the network element itself through the DCCR channel;
the network element to be managed determines a neighbor network element which is managed to be used as an upper management reporting network element according to the network parameter information and generates network parameter information of the network element to be managed so that the network element to be managed and the upper management reporting network element are in the same subnet;
and the network element to be managed sends the equipment information containing the network parameter information of the network element to be managed to the network element to be managed through a DCCR channel.
In some embodiments, the network management system determines network configuration information of each site between a gateway network element and the network element to be managed and transmits the network configuration information to a corresponding network element after receiving the device information of the network element to be managed forwarded by the upper management report network element through an ethernet channel, and includes the steps of:
selecting two VC12 time slots as time slots bound by the VCG ports of the network elements to be on according to the board card information in the equipment information and determining the VCG port configuration information and the cross configuration information of the network elements to be on;
sequentially selecting two VC12 time slots respectively bound by a gateway network element and corresponding VCG ports of each intermediate network element, and determining corresponding VCG port configuration information and cross configuration information;
transmitting VCG port configuration information and cross configuration information of the network element to be managed to the corresponding network element;
and correspondingly and directly transmitting the VCG port configuration information and the cross configuration information of the gateway network element and each intermediate network element to the corresponding network element.
In some embodiments, the selecting two VC12 timeslots as timeslots bound to the VCG port of the pipe network element to be installed according to the board card information in the device information includes the steps of:
calculating the value of the to-be-selected VC12 time slot according to the slot information, the port rate, the value of the VC4 time slot cost and the value of the VC12 time slot cost in the board card information;
and taking the least two VC12 time slots in the cost value of the VC12 time slots to be selected as the time slots bound by the VCG ports of the pipe network element to be connected.
In a second aspect, an embodiment of the present application provides an automatic network element upper management system for an SDH device, which is characterized in that the method includes:
a network element for determining a unique physical interface in the network element to open a network element management port and an Ethernet channel to realize data forwarding, and,
and the on-line network element in the network elements is used for interacting messages with the off-line network element through a DCCR channel and communicating with a network management system through an Ethernet channel so as to drive the off-line network element in the same subnet to automatically conduct on-line.
In some embodiments, the network element is further configured to:
calculating the cost value of each interface in the network element according to the slot position information, the interface type and the port number of the network element;
and selecting the interface with the minimum cost value as the unique physical interface.
In some embodiments, the to-be-added network element of the non-added network elements is configured to:
message interaction is carried out between the DCCR channel and the managed neighbor network element to determine the managed substituted report network element and the equipment information of the network element is forwarded by the managed neighbor network element;
the network management system is used for:
the method comprises the steps of receiving equipment information of a to-be-managed network element forwarded by an upper management report network element through an Ethernet channel, determining network configuration information of each site between the gateway network element and the to-be-managed network element, and transmitting the network configuration information to a corresponding network element, wherein the network configuration information is used for opening the Ethernet channel between the to-be-managed network element and the gateway network element;
the network element to be managed is further configured to receive corresponding network configuration information from the network element to be managed instead of the report, so as to implement automatic management.
In some embodiments of the present application, the network element with the pipe is also used for flooding the network parameter information of the network element with the pipe to the neighbor network element through the DCCR channel;
the to-be-uploaded pipe network element is further configured to:
determining a neighbor network element which is already on the tube as an upper tube reporting network element according to the network parameter information and generating network parameter information of the network element to be on the tube so that the network element to be on the tube and the upper tube reporting network element are in the same subnet;
and transmitting the equipment information containing the network parameter information of the equipment information to the upper management report network element through a DCCR channel.
In some embodiments, the network management system is further configured to:
selecting two VC12 time slots as time slots bound by the VCG ports of the network elements to be on according to the board card information in the equipment information and determining the VCG port configuration information and the cross configuration information of the network elements to be on;
sequentially selecting two VC12 time slots respectively bound by a gateway network element and corresponding VCG ports of each intermediate network element, and determining corresponding VCG port configuration information and cross configuration information;
transmitting VCG port configuration information and cross configuration information of the network element to be managed to the corresponding network element;
and correspondingly and directly transmitting the VCG port configuration information and the cross configuration information of the gateway network element and each intermediate network element to the corresponding network element.
In some embodiments, the network management system is further configured to:
calculating the value of the to-be-selected VC12 time slot according to the slot information, the port rate, the value of the VC4 time slot cost and the value of the VC12 time slot cost in the board card information;
and taking the least two VC12 time slots in the cost value of the VC12 time slots to be selected as the time slots bound by the VCG ports of the pipe network element to be connected. The technical scheme provided by the application has the beneficial effects that:
through the cooperation of the EOS board card of the network element and the DCC channel of the SDH equipment, the gateway network element can realize the communication with the EMS to realize the up-pipe only by configuring the IP of one subnet of the EMS or one IP of the DCN network. For non-gateway network elements, network elements with neighbor relation with gateway network elements can be used for up-tube, and after the network elements are up-tube, the neighbor network elements are driven to up-tube, so that the cyclic linear expansion is carried out, all the network elements are driven to automatically up-tube, and the new up-tube equipment can be supported to automatically join the existing network without complex routing configuration.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of an automatic management method for SDH equipment network elements according to an embodiment of the present application;
fig. 2 is a schematic diagram of a conventional SDH device management network according to an embodiment of the present application
Fig. 3 is a schematic diagram of an automatic upper management system of an SDH device network element according to an embodiment of the present application;
fig. 4 is a schematic diagram of a private protocol in a network element according to an embodiment of the present application;
fig. 5 is a schematic diagram of network parameter information content of a flooding domain of a network element according to an embodiment of the present application;
fig. 6 is a schematic diagram of a state machine operation of the DCCR communication submodule according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
As shown in fig. 1, the embodiment of the present application provides an automatic management method for SDH equipment network elements, which includes the steps of:
s1OO, determining a unique physical interface in a network element to open a network element management port and an Ethernet channel to realize data forwarding;
s2OO, the on-line network element interacts messages with the off-line network element through a DCCR channel and communicates with the network management system through an Ethernet channel so as to drive the off-line network element in the same subnet to automatically conduct on-line.
It can be understood that the data of the network management message is transmitted and received through the management port of the network element, and the determination of the unique physical interface in the network element means that one physical panel port of the EOS disk is selected to be connected with the management port through a network cable, so that the data received by the EOS disk can be forwarded to the management port. Meanwhile, the management port of the main control disk of the equipment network element can be connected with the FE port of the Ethernet terminal board by opening the network element management port and the Ethernet channel. And the main control board card two-layer switch realizes the data forwarding in the VLAN of the terminal board port corresponding to the network element management port and the elected EOS FE port.
It is understood that the managed network elements include a managed gateway network element and a managed non-gateway network element, where the gateway network element is an ethernet interface of the management port directly connected to the EMS or an ethernet port connected to the DCN network switching device. Whether directly connected or connected to the EMS through the DCN network, the gateway network element can realize the connection with the EMS to realize the up-pipe only by configuring the IP of one sub-network of the EMS or one IP of the DCN network. For non-gateway network elements, the network is added by the method in the embodiment of the application, firstly, the network elements which are in the same sub-network with the gateway network elements are put on the tube, and after the network elements are put on the tube, the network elements which are in the same sub-network are driven to put on the tube, so that the cyclic linear expansion is carried out, and the whole network element is driven to put on the tube.
It should be noted that, as shown in the conventional SDH device management network in fig. 2, the network management system EMS is connected to the management port FE port of the gateway network element through the FE port (Fast Ethernet port), the network elements are connected to each other through DCC channels, the network elements connected through the DCC channels are located in different subnets, and a routing protocol, such as OSPF (Open Shortest Path First ) protocol, is run on the DCC channels to complete the routing from the EMS to the network elements. Wherein data information for OAM (operation, administration, maintenance) functions is transported through D1-D12 bytes in VCG frames and transported by VCG-N signals over SDH networks. The D1-D12 bytes provide a general data communication path that all SDH network elements can access, and as a physical layer of the embedded control path (ECC, embedded control channel), operation, administration, and maintenance information (OAM information) is transported between network elements, constituting a transport path of the SDH management network (SMN, SDH management network). Meanwhile, D1-D3 are regeneration section data path bytes (DCCR), the speed is 3X 64 kbit/s=192 kbit/s, used for transmitting OAM information between regeneration section terminals; d4-D12 is a multiplexing segment data path byte (DCCM) for transmitting OAM information between multiplexing segment terminals, 9×64 kbit/s=576 kbit/s in total. DCC channel rates total 768kbit/s. Because the network elements of the DCCR networking require the network elements to be in different networks, the management network needs to operate a routing protocol, the communication management network needs to perform complex routing configuration, and the newly added network elements are very difficult to automatically join the existing network. Meanwhile, SDH devices are usually accessed to the EMS system through a customer DCN network, and cannot be directly accessed to the customer DCN through DCCR networking.
In order to solve the above-mentioned problems of the conventional SDH device management network, as shown in fig. 3, in the embodiment of the present application, the DCCR channel is not used for the management network, but is used for transmitting a message (management network parameter information, etc.) between network elements, so that the use of the existing DCC channel is changed, and the management network can directly interface with the DCN network, thereby meeting the requirement of OAM information penetrating through the customer DCN network. Meanwhile, when the network element is in a pipe, the on-line network element and the off-line network element are in a sub-network through the message interaction between the on-line network element and the off-line network element, so that the new on-line equipment can be supported to automatically join the existing network without complex routing configuration, and engineering operation and maintenance are greatly facilitated.
In some embodiments, S100 comprises the steps of:
s110, calculating a cost value of each interface in the network element according to the slot position information, the interface type and the port number of the network element;
and S120, selecting an interface with the minimum cost value as the unique physical interface.
It should be noted that, each network element needs to be configured with an EOS board card, and the board card may have an FE port or a GE port. Each network element is simultaneously configured with an Ethernet terminal board. The non-gateway network element connects the management port with the first port of the ethernet terminal block.
The main control selects a port of a proper EOS board card as a unique physical interface (management network port) through an intelligent algorithm, wherein the intelligent algorithm comprises the steps of calculating the cost value of each interface in a network element according to the slot position information, the interface type and the port number of the network element, and selecting the interface with the minimum cost value as the unique physical interface. The intelligent algorithm may preferably choose low rate ethernet to be prioritized in order to guarantee the election of a uniquely determined interface within the network element, protecting the high rate interface resources.
An intelligent algorithm takes the interface type and the slot position of the EOS board card, the interface type, the port number and the maximum slot position of the network element as algorithm factors, and the algorithm specifically comprises the following steps:
algorithm factors: SLOT (SLOT), interface type (INERFACE TYPE): FE/GE, port number: port_number;
maximum number of slots of network element: max (SLOT);
COST value assignment: SLOT (SLOT), FE:1, GE: max (SLOT), PORT_NUMBER:1;
interface cost=cost (SLOT) + COST (INERFACETYPE) +cost (port_number)
And selecting the interface with the smallest value of the interface COST as an Ethernet physical port added into the management network.
It can be understood that after electing the ethernet physical port added to the management network, the master switch adds the master management port, the ethernet physical port of the management network, and the first port of the terminal board to the same VLAN, which is responsible for managing the forwarding of data.
In some embodiments, S200 comprises the steps of:
s210, carrying out message interaction between a network element to be managed and a neighbor network element already managed through a DCCR channel to determine a network element for managing instead of reporting and forwarding equipment information of the network element through the neighbor network element;
s220, the network management system receives the equipment information of the network element to be managed forwarded by the upper management report network element through an Ethernet channel, determines network configuration information of each site between the gateway network element and the network element to be managed, and transmits the network configuration information to the corresponding network element, wherein the network configuration information is used for opening the Ethernet channel between the network element to be managed and the gateway network element;
and S230, the network element to be managed receives the corresponding network configuration information from the network element to be managed instead of the newspaper to realize automatic management.
It should be noted that, the gateway network element can actively push the gateway network element management information to the EMS network management system, the network management system and the gateway network element establish a heartbeat connection, and the first station gateway network element realizes the management on the EMS network management system; after the gateway network element is up, other network elements to be up-managed realize automatic up-management through S210, S220 and S230.
In some embodiments, S210 includes the steps of:
s211: the network element on the network floods the neighbor network element with the network parameter information of the network element on the network element itself through the DCCR channel;
s212, the network element to be managed determines a neighbor network element which is managed to be used as an upper management report network element according to the network parameter information and generates the network parameter information of the network element to be managed so that the network element to be managed and the upper management report network element are in the same subnet;
s213, the network element to be managed sends the device information containing the network parameter information of itself to the network element to be managed through the DCCR channel.
The network parameter information includes a network element IP address, a subnet mask, subnet address information, and the like. In a preferred embodiment, the network parameter information content of the flooding network element is shown in fig. 5, where each network element presets KEY1, KEY2 and KEY3 information when leaving the factory. The device information includes network parameter information, board information, and the like.
It can be understood that, in order to enable the newly added network element to generate its own network parameter, the already-added network element diffuses its own network parameter information to the neighboring network element according to a certain frequency. After the network element that has been managed through the neighbor network element that has been managed gets the IP address, the IP address of itself (the subnet IP address that is not repeated with other network elements that have been managed) can be generated according to the IP address to ensure that the network element that has been managed is in the same subnet as the neighbor network element that has been managed.
In a specific embodiment, the master floods network parameter information to all DCCR ports in an UP state. The main control exchanger and the PHY port of FGPA of SDH service board establish LINK relation, and the network element internal private protocol in the format shown in figure 4 is operated on the Ethernet channel. The MAC of the master control is determined as ID1-ID2-ID3-R-10-S (ID 1-ID3 is manufacturer ID, R is frame number, S is SLOT value); the MAC of the corresponding SDH service board card FPGA port is: ID1-ID2-ID3-R-01-S (ID 1-ID3 is vendor ID, R is frame number, S is SLOT value); the main control uses a fixed VLAND ID (the VLAN ID can not be repeated with the VLAN ID of the service board card DCCR port) corresponding to the division of the VLAN; for the service board, 20 VLANs are allocated to each service board, the VLAN ID corresponding to the first DCCR port of each service board is SLOT 20+1, and the VLAN IDs corresponding to other ports are SLOT 20+PORT IDs; protocol identification is used to identify the data content as a communication protocol ID value between the master switch port and the FPGA port. The payload of the protocol is the data on the SDH line between the network elements (the PPP protocol is run on the line). Network parameter information sent by the network element is in a PPP protocol payload area, and data is organized according to a TLV protocol. The content organization of the VALUE is shown in fig. 5, the IP address and the subnet mask configure the content for the IP parameters of the network element management port, and the EMS flag is the heartbeat flag byte of the local network element and the EMS network management system. If the heartbeat of the network element and the EMS network management system is normal, the flag byte is set to 1, otherwise, the flag byte is set to 0. After receiving the data sent from the main control CPU, the FPGA of the network element SDH service board card analyzes the DCCR port information, peels off the network element internal communication protocol header, inserts the whole PPP message into the DCCR overhead time slot, and completes the transmission of the management information on the line.
In a specific embodiment, the FPGA of the SDH service board of the network element extracts DCCR overhead content from the line, adds PPP data between the network elements into the encapsulation of the service FPGA port and the master switch port (in the format shown in fig. 5), and fills the master MAC and its own MAC. The master control MAC is obtained by actively learning the received data (network parameter information) sent by the master control CPU of the neighbor network element. The own source MAC may pass the rule: ip=neighbor network element IP & neighbor network element subnet mask+ (network element KEY1< < 16+network element KEY2< < 8+network element KEY 3) & (inverse code of neighbor network element subnet mask), which ensures that IP generated by learning network parameters of neighbor network elements and neighbor network elements already on the tube are in the same subnet, and VLAN ID can be generated according to the rule of SLOT 20+port of the received message.
After receiving the data sent by the service board card, the main control CPU analyzes the payload data of the PPP protocol, if the payload data is the network parameter information, judges whether the EMS flag byte is 1, if the EMS flag byte is not 1, the main control CPU indicates that the neighbor network element does not establish the heartbeat connection with the network manager, so that the network parameter of the network element is abandoned to be learned; if the network parameters are 1, whether the management port management network parameters of the network element are successfully generated is continuously judged, and if the network parameters are not generated, the network parameters are generated according to the IP calculation rule.
In a specific embodiment, after the network element generates the management network parameter information, the network element sends the device information of the network element to the DCCR port on which the neighbor network element parameters are learned. When receiving the neighbor network parameter message with EMS state 1 from a plurality of ports, only selecting the DCCR port with the smallest COST value as the response port. The equipment information model is as follows:
network element KEY information: KEY1, KEY2, KEY3;
managing network parameter information: IP address, subnet mask;
frame information: frame type, frame address;
board card information: the name of the board card, the type of the board card (main control/SDH service board card/EOS service board card/PDH service board card/terminal board card/power board card/fan board card, etc.), the total number of ports and the port rate;
the network element CPU encapsulates the message data, and the TYPE mark in the TLV in the PPP payload is network element equipment information. The FPGA of the SDH service card is responsible for driving this message into DCCR slots.
In some embodiments, after receiving the device information sent by the neighbor non-upper network element, the upper-layer proxy network element forwards the device information to the EMS. Preferably, the message model reported to the EMS is:
KEY information of the network element: KEY1, KEY2, KEY3;
a DCCR port of the local network element;
applying for a DCCR port of the added network element;
applying for added network element KEY information: KEY1, KEY2, KEY3;
network element management network parameter information applied for joining: IP address, subnet mask;
applying for added network element frame information: frame type, frame address;
applying for added network element board card information: the name of the board card, the type of the board card (main control/SDH service board card/EOS service board card/PDH service board card/terminal board card/power board card/fan board card, etc.), the total number of ports and the port rate.
In some embodiments, S220 comprises the steps of:
s221, selecting two VC12 time slots as time slots bound by the VCG ports of the network element to be uploaded according to board card information in the equipment information and determining the VCG port configuration information and the cross configuration information of the network element to be uploaded;
s222, sequentially selecting two VC12 time slots respectively bound by a gateway network element and corresponding VCG ports of each intermediate network element and determining corresponding VCG port configuration information and cross configuration information;
s223, transmitting VCG port configuration information and cross configuration information of the network element to be managed to the corresponding managed reporting network element;
s224, the VCG port configuration information and the cross configuration information of the gateway network element and each intermediate network element are correspondingly and directly issued to the corresponding network element.
Note that the VCG port is a logical port of the EOS board. Since the bandwidth of one VC12 slot is 2M, binding VCG ports to two VCs 12 slots can form one 4M management bandwidth.
The embodiment improves the management bandwidth of the SDH equipment to 4Mbit/s, can transmit more OAM information, and meets the management requirement of the scene of the novel high-capacity multi-service board card of the SDH equipment.
In some embodiments, S221 includes the steps of:
s221a: calculating the value of the to-be-selected VC12 time slot according to the slot information, the port rate, the value of the VC4 time slot cost and the value of the VC12 time slot cost in the board card information;
s221b: and taking the least two VC12 time slots in the cost value of the VC12 time slots to be selected as the time slots bound by the VCG ports of the pipe network element to be connected.
In some embodiments, when the VC12 time slot is selected, a VCG port with a low rate is preferentially selected as a line port, each VCG binds two VC12 time slots, and the first VC4 time slot to the first VC12 are preferentially allocated, and the small slot STM disk is preferentially allocated. When calculating the cost value of the VC12 time slot to be selected, the algorithm factors are as follows: SLOT (SLOT), VCG interface RATE (RATE), VC4 SLOT number, VC12 SLOT number, and a cost overhead value is assigned to each factor.
COST values are assigned as follows:
SLOT (SLOT);
interface rate:
VCG－1：Max(slot)，
VCG－4:Max(slot)*2,
VCG－16：Max(slot)*3,
VCG－64:Max(slot)*4；
VC4：(N-1)*64+1；
VC12：(N-1)*64+1。
the cost value of the VC12 time slot to be selected is made to be the sum of the slot cost value, the port rate cost value, the VC4 time slot cost value and the VC12 time slot cost value, and two VC12 time slots with the relatively minimum cost value of the VC12 time slot to be selected are selected from the sum as binding time slots of the VCG ports.
The EMS acquires topology information of the whole network through local network element port information DCCR and remote DCCR port information in the information (equipment information) of the neighbor network element request uplink reported by the network element. And the service route information of the gateway network element and the network element requesting the upper management is obtained through the topology information of the network. When two VC12 time slots are bound to VCG ports of gateway network elements and network elements of intermediate sites, the same algorithm factors are adopted to calculate the cost value of the VC12 time slots to be selected and the VC12 time slots are selected, and the VC12 time slots occupied by the service are required to be excluded during the selection.
In some embodiments, after completing the selection of the VC12 timeslot, the network manager generates the VCG interface, the configuration of the high-order port and the low-order port, the configuration of the VCG interface and the bonding timeslot, and the cross configuration for the upper network element and the gateway network element. And for the intermediate site, generating the configuration and the cross configuration of the STM interface, the high-order port and the low-order port. The configuration of other network elements except the configuration of the network element to be on-line is sent to the corresponding network element, and the configuration of the newly added network element is sent to the on-line reporting network element for forwarding the equipment information.
Preferably, the configuration model of the pipe network element to be installed is:
KEY information of the target network element: KEY1, KEY2, KEY3;
receiving KEY information of configured network elements instead: KEY1, KEY2, KEY3;
the data content is as follows: the data payload is configured.
After receiving the configuration of the EMS, the upper management report-substituting network element forwarding the equipment information of the network element to be upper management compares the KEY information of the target network element with the KEY information of the proxy receiving configuration network element, if the KEY information of the proxy receiving configuration network element is completely matched with the KEY information of the proxy receiving configuration network element, the corresponding local DCCR port and remote DCCR port information receiving the source equipment information are searched through the KEY information of the target network element, the destination MAC, the source MAC and the VLANID information in the network element are packaged, the TYPE in the TLV of the PPP payload is set as the configuration, and the content of the VALUE part is the configuration data issued by the EMS. After receiving the data, the FPGA port of the corresponding SDH service board card removes the protocol header in the network element, and the PPP part content is driven into the DCCR time slot to finish sending the configuration data to the neighbor network element.
In some embodiments, after receiving the configuration data forwarded by the upper management report network element, the FPGA of the SDH service board card of the upper management report network element extracts DCCR overhead data from the line, and sends the configuration data forwarded by the upper management report network element to the main control CPU after adding the protocol header of the FPGA port and the main control CPU switch port. After receiving the configuration data, the main control CPU sends the data to the configuration processing component, the component completes the analysis and processing of the configuration, completes the creation of STM interfaces and high-low order logic interfaces, the creation of VCG logic interfaces and time slot binding, and generates the cross, thereby completing the service opening of the management network opening.
The gateway network element and the intermediate network element directly receive the configuration data sent by the EMS, compare the corresponding between the KEY value of the target network element and the KEY value of the intermediate network element, and directly deliver the configuration data to the configuration processing component for processing. The gateway network element completes the creation of STM interfaces and high-low order logic interfaces, the creation of VCG logic interfaces, time slot binding, cross generation and service opening for managing network opening, and the intermediate site completes the creation of STM interfaces and high-low order logic interfaces, cross generation and service opening for managing network opening. So far, the gateway network element and the management channel of the network element to be managed are opened, and the network element to be managed realizes the management on the EMS.
As shown in fig. 2, in a specific embodiment, a gateway network element NE1 management port is directly connected to an ethernet card of an EMS network management system server through a network cable, the gateway network element management port IP is configured (10.18.1.1/24) to be in a subnet with the EMS network management system network card IP (10.18.1.100/24), the EMS network manager sends a heartbeat message to the gateway network element IP, the gateway network element responds to the network management heartbeat message, and the EMS network manager realizes the gateway network element management after receiving the response heartbeat message of the gateway network element.
In this embodiment, the network element NE2 has realized an ethernet channel with a management port of the gateway network element through steps S100 and S200, and the management port IP is 10.18.1.2/24, which can normally communicate with the network management system, and the network element NE2 has been managed on the network management system.
In this embodiment, the main control CPU of the network element NE2 sends network parameter information to FPGA PHY ports of the service board card at the physical location where all DCCR ports in the UP state are located according to a preset frequency, where the content of the network parameter is shown in fig. 5. The IP address is the IP address 10.18.1.2 of the management port of NE2, and the subnet mask is the subnet mask 255.255.255.0 of the IP address of the management port. Because NE2 is already on the tube, EMS mark is 1, network element KEY information reads the KEY1-KEY3 information preset in the realization of network element production through the electromechanical interface, DCCR port information is expressed as four-element format of frame/slot/sub-card/port number, and the frame address, slot address, sub-card address and physical port number of SDH service board card of DCCR port are filled. The payload content of the PPP protocol of this part of content, the data is organized according to TLV format, the network parameter information of the upper management network element flood is the content with TYPE 1 in the PPP TLV, and the state machine of the DCCR communication submodule is shown in fig. 6. The main control CPU inserts the Ethernet encapsulation of the switch port of the main control CPU and the port of the FPGA into the PPP data. After receiving the data sent by the main control CPU, the SDH service board FPGA analyzes the VLAN ID to acquire and acquire the physical port information, peels off the Ethernet encapsulation head and sends PPP link data to the line.
In this embodiment, the FPGA of the NE3 network element SDH service board extracts the packet sent by the NE2 that has been managed through the DCCR channel from the line, and adds the PPP protocol packet into the ethernet package of the service FPGA port and the main control switch port, and sends the ethernet package to the main control CPU. The main control CPU judges that the EMS flag byte of the data packet is 1, and reads that factory preset KEY1-KEY3 is 0xa,0xb and 0x3 through an electromechanical interface, and generates management IP 0x0a120103 through IP=0x0a120102 & 0Xffff00+ (0xa < <16+0xb < < 8+3) & (0 xff), wherein the mask is 255.255.255.0 with NE2, and NE3 learns network parameters sent by NE2 to generate own network parameters and the NE2 are in the same subnet.
After the NE3 learns the management network parameters, the main control CPU sends the device board card information with PPP data TLV TYPE of 2 to the DCCR port which learns the NE2 network parameters. If the network parameter information of the NE2 is received by a plurality of DCCR ports of the NE3, a DCCR port of a message reported by the NE3 to the NE2 is promoted according to a rule of firstly small slots and then small ports. The NE3 master control CPU adds the PPP message into the Ethernet package inside the network element. The FPGA of the SDH service card is responsible for sending PPP protocol message data to the line between NE3 and NE 2. The FPGA of the NE2 network element SDH service board card extracts the PPP protocol message sent by the NE3 to be managed from the line, and adds the Ethernet package of the service FPGA port and the master control switch port to be sent to the master control CPU. The main control CPU judges the TYPE of TLV in PPP protocol as 2, recognizes the message content as NE3 network element equipment information message, and determines NE3 network element request to be managed. The channel used by the message when the NE2 network element reports the network management is an Ethernet channel between the network management and the NE 2.
After receiving the equipment information of NE3 reported by NE2, EMS network manager traverses the board card information of the whole network element to determine the calculation algorithm of COST value of the interface, and selects two VC12 time slots with the smallest COST value in the network element as binding time slots of VCG ports. Similarly, for gateway element NE1, two VC12 timeslots with the smallest COST value, except for VC12 occupied by traffic and VC12 timeslots used when constructing the management network with element NE2, are determined. For network element NE2, which establishes an intermediate network element of the management network for gateway network elements NE1 and NE3, the two VC12 timeslots with the smallest COST value except for the VC12 timeslots occupied by the service and the two VC12 timeslots used to establish the management network with gateway network element NE1 are determined in the same manner. The EMS network manager directly configures and crosses the interfaces under the NE1 and the NE2, sends the configuration of the NE3 to the NE2, and forwards the configuration to the NE3 through a DCC channel, and the NE2 identifies whether the configuration is the configuration needing to be forwarded or not through whether the objective KEY value is matched with the self KEY value or not. After the NE1, the NE2 and the NE3 process the configuration issued by the EMS network manager, the Ethernet channels of the NE1 of the new upper management network element NE3 and the gateway network element are realized, so that the management channels from the EMS network manager to the NE3 network element are opened.
The embodiment of the application also provides an automatic SDH equipment network element upper management system, which is characterized by comprising:
a network element for determining a unique physical interface in the network element to open a network element management port and an Ethernet channel to realize data forwarding, and,
and the on-line network element in the network elements is used for interacting messages with the off-line network element through a DCCR channel and communicating with a network management system through an Ethernet channel so as to drive the off-line network element in the same subnet to automatically conduct on-line.
In some embodiments, the network element is further configured to:
calculating the cost value of each interface in the network element according to the slot position information, the interface type and the port number of the network element;
and selecting the interface with the minimum cost value as the unique physical interface.
In some embodiments, a to-be-added network element of the non-added network elements is configured to:
message interaction is carried out between the DCCR channel and the managed neighbor network element to determine the managed substituted report network element and the equipment information of the network element is forwarded by the managed neighbor network element;
the network management system is used for:
the method comprises the steps of receiving equipment information of a to-be-managed network element forwarded by an upper management report network element through an Ethernet channel, determining network configuration information of each site between the gateway network element and the to-be-managed network element, and transmitting the network configuration information to a corresponding network element, wherein the network configuration information is used for opening the Ethernet channel between the to-be-managed network element and the gateway network element;
the network element to be managed is also used for receiving the corresponding network configuration information from the network element to be managed instead of the newspaper to realize automatic management.
In some embodiments, the network element on the network is further configured to flood network parameter information of the network element on the network element itself to the neighboring network element through the DCCR channel;
the to-be-uploaded pipe network element is further used for:
determining a neighbor network element which is already on the tube as an upper tube reporting network element according to the network parameter information and generating network parameter information of the network element to be on the tube so that the network element to be on the tube and the upper tube reporting network element are in the same subnet;
and transmitting the equipment information containing the network parameter information of the equipment information to the upper management report network element through a DCCR channel.
In some embodiments, the network management system is further configured to:
selecting two VC12 time slots as time slots bound by the VCG ports of the network elements to be on according to the board card information in the equipment information and determining the VCG port configuration information and the cross configuration information of the network elements to be on;
sequentially selecting two VC12 time slots respectively bound by a gateway network element and corresponding VCG ports of each intermediate network element, and determining corresponding VCG port configuration information and cross configuration information;
transmitting VCG port configuration information and cross configuration information of the network element to be managed to the corresponding network element;
and correspondingly and directly transmitting the VCG port configuration information and the cross configuration information of the gateway network element and each intermediate network element to the corresponding network element.
In some embodiments, the network management system is further configured to:
calculating the value of the to-be-selected VC12 time slot according to the slot information, the port rate, the value of the VC4 time slot cost and the value of the VC12 time slot cost in the board card information;
and taking the least two VC12 time slots in the cost value of the VC12 time slots to be selected as the time slots bound by the VCG ports of the pipe network element to be connected.
Those of ordinary skill in the art will appreciate that all or some of the steps, systems, functional modules/units in the apparatus, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between the functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed cooperatively by several physical components. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer-readable storage media, which may include computer-readable storage media (or non-transitory media) and communication media (or transitory media).
The foregoing is merely a specific implementation of the embodiment of the present application, but the protection scope of the embodiment of the present application is not limited thereto, and any person skilled in the art may easily think of various equivalent modifications or substitutions within the technical scope of the embodiment of the present application, and these modifications or substitutions should be covered in the protection scope of the embodiment of the present application. Therefore, the protection scope of the embodiments of the present application shall be subject to the protection scope of the claims.
Claims (8)
1. An automatic pipe feeding method for SDH equipment network elements is characterized by comprising the following steps:
determining a unique physical interface in the network element to open a network element management port and an Ethernet channel to realize data forwarding;
the network element on the network is communicated with the network element to be on the network through a DCCR channel and an Ethernet channel so as to drive the network element to be on the network in the same sub-network to automatically on the network;
the on-line network element interacts messages with the on-line network element through a DCCR channel and communicates with a network management system through an Ethernet channel so as to drive the on-line network element positioned in the same sub-network to automatically conduct on-line, and the method comprises the following steps:
the network element on the network floods the neighbor network element with the network parameter information of the network element on the network element itself through the DCCR channel;
the network element to be managed determines a neighbor network element which is managed to be used as an upper management reporting network element according to the network parameter information and generates the network parameter information of the network element to be managed so that the network element to be managed and the upper management reporting network element are in the same sub-network, and
the network element to be managed sends the equipment information containing the network parameter information of the network element to be managed to the reporting network element through a DCCR channel;
the network management system receives the equipment information of the network element to be managed forwarded by the upper management report-substituting network element through an Ethernet channel, determines network configuration information of each site between the gateway network element and the network element to be managed, and transmits the network configuration information to the corresponding network element, wherein the network configuration information is used for opening the Ethernet channel between the network element to be managed and the gateway network element;
and the network element to be managed receives the corresponding network configuration information from the network element to be managed instead of the report to realize automatic management.
2. The automatic management method for SDH equipment network element according to claim 1, wherein the determining the unique physical interface in the network element to open the network element management port and the ethernet channel to implement data forwarding comprises the steps of:
calculating the cost value of each interface in the network element according to the slot position information, the interface type and the port number of the network element;
and selecting the interface with the minimum cost value as the unique physical interface.
3. The automatic network element feeding method of SDH equipment according to claim 1, wherein the network management system determines network configuration information of each site between a gateway network element and the network element to be fed through an ethernet channel after receiving the equipment information of the network element to be fed forwarded by the upper management report network element, and sends the network configuration information to the corresponding network element, and the method comprises the steps of:
selecting two VC12 time slots as time slots bound by the VCG ports of the network elements to be on according to the board card information in the equipment information and determining the VCG port configuration information and the cross configuration information of the network elements to be on;
sequentially selecting two VC12 time slots respectively bound by a gateway network element and corresponding VCG ports of each intermediate network element, and determining corresponding VCG port configuration information and cross configuration information;
transmitting VCG port configuration information and cross configuration information of the network element to be managed to the corresponding network element;
and correspondingly and directly transmitting the VCG port configuration information and the cross configuration information of the gateway network element and each intermediate network element to the corresponding network element.
4. A method for automatically feeding SDH equipment network elements according to claim 3, wherein said selecting two VC12 timeslots as timeslots to be bound to VCG ports of said to-be-fed network element according to board information in equipment information comprises the steps of:
calculating the value of the to-be-selected VC12 time slot according to the slot information, the port rate, the value of the VC4 time slot cost and the value of the VC12 time slot cost in the board card information;
and taking the least two VC12 time slots in the cost value of the VC12 time slots to be selected as the time slots bound by the VCG ports of the pipe network element to be connected.
5. An automatic network element upper management system for an SDH device, comprising:
a network element for determining a unique physical interface in the network element to open a network element management port and an Ethernet channel to realize data forwarding, and,
the network elements on the network element are used for interacting messages with the network elements on the network to be on through a DCCR channel and communicating with a network management system through an Ethernet channel so as to drive the network elements on the network to be on the same sub-network to automatically on the network;
the system also comprises a network management system;
the network element with the pipe is also used for flooding the network parameter information of the network element with the pipe to the neighbor network element through the DCCR channel;
the network element to be managed is further configured to determine an up-managed neighbor network element as an up-managed report network element according to the network parameter information, and generate network parameter information of the network element to be managed so that the network element to be managed and the up-managed report network element are in the same subnet, and
transmitting the equipment information containing the self network parameter information to the upper management report network element through a DCCR channel;
the network management system is used for:
the method comprises the steps of receiving equipment information of a to-be-managed network element forwarded by an upper management report network element through an Ethernet channel, determining network configuration information of each site between the gateway network element and the to-be-managed network element, and transmitting the network configuration information to a corresponding network element, wherein the network configuration information is used for opening the Ethernet channel between the to-be-managed network element and the gateway network element;
the network element to be managed is further configured to receive corresponding network configuration information from the network element to be managed instead of the report, so as to implement automatic management.
6. An SDH device network element automatic pipe feeding system according to claim 5, wherein said network element is further adapted to:
calculating the cost value of each interface in the network element according to the slot position information, the interface type and the port number of the network element;
and selecting the interface with the minimum cost value as the unique physical interface.
7. An SDH device network element automatic pipe feeding system according to claim 5, wherein said network management system is further configured to:
selecting two VC12 time slots as time slots bound by the VCG ports of the network elements to be on according to the board card information in the equipment information and determining the VCG port configuration information and the cross configuration information of the network elements to be on;
sequentially selecting two VC12 time slots respectively bound by a gateway network element and corresponding VCG ports of each intermediate network element, and determining corresponding VCG port configuration information and cross configuration information;
transmitting VCG port configuration information and cross configuration information of the network element to be managed to the corresponding network element;
and correspondingly and directly transmitting the VCG port configuration information and the cross configuration information of the gateway network element and each intermediate network element to the corresponding network element.
8. The automatic SDH device network element management system of claim 7, wherein the network management system is further configured to:
calculating the value of the to-be-selected VC12 time slot according to the slot information, the port rate, the value of the VC4 time slot cost and the value of the VC12 time slot cost in the board card information;
and taking the least two VC12 time slots in the cost value of the VC12 time slots to be selected as the time slots bound by the VCG ports of the pipe network element to be connected.
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