CN114826952A - Information processing method and device for OAM detection and node equipment - Google Patents
Information processing method and device for OAM detection and node equipment Download PDFInfo
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Abstract
The embodiment of the invention discloses an information processing method, an information processing device and node equipment for operation, maintenance and administration (OAM) detection. The method comprises the following steps: a first node receives a first data packet sent by a terminal, wherein the first data packet comprises first requirement information; the first demand information represents a deterministic traffic demand; the first node determines a transmission path according to the first requirement information, and sends a second data packet to a second node according to the transmission path; the second data packet comprises second requirement information; the second requirement information represents a detection requirement of deterministic traffic; and the first node receives a third data packet sent by the second node, wherein the third data packet comprises a detection result of each node in the transmission path for the second requirement information.
Description
Technical Field
The present invention relates to data communication network technology, and in particular, to an information processing method, apparatus, and node device for Operation Administration and Maintenance (OAM) detection.
Background
The deterministic network transmission service is provided based on an IP network, and the network is required to provide the capability of ensuring the upper limit of the transmission delay, the upper limit of the delay jitter, the upper limit of the packet loss rate and the like of network messages. This needs to support the relevant network devices to precisely control and allocate the time resources for processing packets in the time dimension according to the constraints of the relevant services and users. However, current detection techniques have a number of limitations.
At present, a mode of sending an analog detection message is usually adopted to detect performance parameters such as packet loss rate, frame delay and the like, but the mode cannot guarantee that a transmission path of the message is consistent with a real path, and cannot truly reflect network service quality. In addition, the traditional information acquisition period is in the minute level, the problems of time delay mutation and packet loss in the millisecond level cannot be effectively positioned, network fault positioning can only be passively positioned, the positioning period is long, and the difficulty is high.
Disclosure of Invention
In order to solve the existing technical problem, embodiments of the present invention provide an information processing method, an information processing apparatus, and a node device for OAM detection.
In order to achieve the above purpose, the technical solution of the embodiment of the present invention is realized as follows:
in a first aspect, an embodiment of the present invention provides a method for OAM detection processing, where the method includes:
a first node receives a first data packet sent by a terminal, wherein the first data packet comprises first requirement information; the first demand information represents a deterministic traffic demand;
the first node determines a transmission path according to the first requirement information, and sends a second data packet to a second node according to the transmission path; the second data packet comprises second requirement information; the second requirement information represents a detection requirement of deterministic traffic;
and the first node receives a third data packet sent by the second node, wherein the third data packet comprises a detection result of each node in the transmission path for the second requirement information.
In the above scheme, the first data packet carries the first requirement information through an extended Service Level Agreement (SLA).
In the foregoing solution, the second requirement information includes at least one of the following information: the data flow demand bandwidth, the available time slot number, the period mapping information related to the data packet transmission and the period window information.
In the above scheme, the extension field of the header of the second data packet carries the second requirement information; and/or the presence of a gas in the gas,
and the extension field of the message header of the third data packet carries the detection result.
In the foregoing scheme, the sending the second data packet to the second node according to the transmission path includes:
the first node sends a first SRv6 data packet to the second node according to the transmission path; a Segment Routing Header (SRH) of the first SRv6 packet includes first in-band OAM information, which includes the second demand information.
In the above scheme, the receiving, by the first node, the third data packet sent by the second node includes:
the first node receives a second SRv6 data packet sent by the second node; the SRH of the second SRv6 packet includes second in-band OAM information, where the second in-band OAM information includes a detection result of each node in the transmission path for the second demand information.
In a second aspect, an embodiment of the present invention further provides a method for OAM detection processing, where the method includes:
the second node receives a fourth data packet sent by the first node or other second nodes, wherein the fourth data packet comprises second requirement information; the second requirement information represents a detection requirement of deterministic traffic;
the second node carries out detection based on the second requirement information to obtain a detection result;
and the second node sends a fifth data packet according to the transmission path corresponding to the fourth data packet, wherein the fifth data packet carries the detection result.
In the foregoing solution, the second requirement information includes at least one of the following information: the data flow demand bandwidth, the available time slot number, the period mapping information related to the data packet transmission and the period window information.
In the above scheme, the extension field of the header of the fourth data packet carries the second requirement information; and/or the presence of a gas in the gas,
and the extension field of the message header of the fifth data packet carries the detection result.
In the above scheme, the receiving, by the second node, the fourth data packet sent by the first node or another second node includes:
the second node receives a third SRv6 data packet sent by the first node or other second nodes; the SRH of the third SRv6 packet includes third in-band OAM information, which includes the second demand information.
In the foregoing solution, the sending, by the second node, the fifth data packet according to the transmission path corresponding to the fourth data packet includes:
the second node sends a fourth SRv6 data packet according to the transmission path corresponding to the fourth data packet; the SRH of the fourth SRv6 packet includes fourth in-band OAM information, which includes a detection result for the second demand information.
In a third aspect, an embodiment of the present invention further provides an information processing apparatus for OAM detection, where the apparatus is applied to a first node, and the apparatus includes: the device comprises a first receiving unit, a determining unit and a first sending unit; wherein the content of the first and second substances,
the first receiving unit is configured to receive a first data packet sent by a terminal, where the first data packet includes first requirement information; the first demand information represents a deterministic traffic demand;
the determining unit is used for determining a transmission path according to the first requirement information;
the first sending unit is configured to send a second data packet to a second node according to the transmission path determined by the determining unit; the second data packet comprises second requirement information; the second requirement information represents a detection requirement of deterministic traffic;
the first receiving unit is further configured to receive a third data packet sent by the second node, where the third data packet includes a detection result of each node in the transmission path for the second requirement information.
In the above scheme, the first data packet carries the first requirement information through an expanded SLA.
In the foregoing solution, the second requirement information includes at least one of the following information: the data flow demand bandwidth, the available time slot number, the period mapping information related to the data packet transmission and the period window information.
In the above scheme, the extension field of the header of the second data packet carries the second requirement information; and/or the presence of a gas in the gas,
and the extension field of the message header of the third data packet carries the detection result.
In the foregoing solution, the first sending unit is configured to send a first SRv6 data packet to the second node according to the transmission path; a segment routing packet header (SRH) of the first SRv6 packet includes first in-band OAM information, which includes the second demand information.
In the foregoing solution, the first receiving unit is configured to receive a second SRv6 data packet sent by the second node; the SRH of the second SRv6 packet includes second in-band OAM information, where the second in-band OAM information includes a detection result of each node in the transmission path for the second requirement information.
In a fourth aspect, an embodiment of the present invention further provides an information processing apparatus for OAM detection, where the apparatus is applied to a second node, and the apparatus includes: the device comprises a second receiving unit, a detecting unit and a second sending unit; wherein the content of the first and second substances,
the second receiving unit is configured to receive a fourth data packet sent by the first node or another second node, where the fourth data packet includes second requirement information; the second requirement information represents a detection requirement of deterministic traffic;
the detection unit is used for detecting based on the second requirement information to obtain a detection result;
the second sending unit is configured to send a fifth data packet according to a transmission path corresponding to the fourth data packet, where the fifth data packet carries the detection result obtained by the detecting unit.
In the foregoing solution, the second requirement information includes at least one of the following information: the data flow demand bandwidth, the available time slot number, the period mapping information related to the data packet transmission and the period window information.
In the above scheme, the extension field of the header of the fourth data packet carries the second requirement information; and/or the presence of a gas in the gas,
and the extension field of the message header of the fifth data packet carries the detection result.
In the foregoing solution, the second receiving unit is configured to receive a third SRv6 data packet sent by the first node or another second node; the SRH of the third SRv6 packet includes third in-band OAM information, which includes the second demand information.
In the foregoing solution, the second sending unit is configured to send a fourth SRv6 data packet according to a transmission path corresponding to the fourth data packet; the SRH of the fourth SRv6 packet includes fourth in-band OAM information, which includes a detection result for the second demand information.
In a fifth aspect, the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the method according to the foregoing first aspect or second aspect.
In a sixth aspect, an embodiment of the present invention further provides a node device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor executes the computer program to implement the steps of the method in the foregoing first aspect or second aspect of the embodiment of the present invention.
The embodiment of the invention provides an information processing method, an information processing device and node equipment for OAM detection, wherein the method comprises the following steps: a first node receives a first data packet sent by a terminal, wherein the first data packet comprises first requirement information; the first demand information represents a deterministic traffic demand; the first node determines a transmission path according to the service requirement information and sends a second data packet to a second node according to the transmission path; the second data packet comprises second requirement information; the second requirement information represents a detection requirement of deterministic traffic; and the first node receives a third data packet sent by the second node, wherein the third data packet comprises a detection result of each node in the transmission path for the second requirement information. By adopting the technical scheme of the embodiment of the invention, the OAM information and the data which need to be carried are packaged in the data packet, the OAM information and the actual data packet are transmitted along the real transmission path of the network, each second node can detect the OAM information and send the detection result along with the data packet, the first node can obtain the detection result of each node in the transmission path through the transmission of the data packet, on one hand, the obtained detection result can truly reflect the quality of network service, realize the detection of the performance of network resources with finer granularity, on the other hand, the embodiment can record corresponding OAM information carried in different service flows according to different service requirements, and ensure real-time detection and resource control according to the service requirements and the actual transmission path of the service.
Drawings
FIG. 1a is a schematic model diagram of a deterministic network;
FIG. 1b is a schematic diagram of the architecture of a deterministic network;
fig. 2 is a first flowchart illustrating an information processing method for OAM detection according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an SRH structure in an information processing method for OAM detection according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of in-band OAM information in an information processing method for OAM detection according to an embodiment of the present invention;
fig. 5 is a second flowchart illustrating an information processing method for OAM detection according to an embodiment of the present invention;
fig. 6 is an interaction flow diagram of an information processing method for OAM detection according to an embodiment of the present invention;
fig. 7 is a first schematic structural diagram illustrating a composition of an information processing apparatus for OAM detection according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a second configuration of an information processing apparatus for OAM detection according to an embodiment of the present invention;
fig. 9 is a schematic diagram of a hardware composition structure of a node device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Before the technical solution of the embodiment of the present invention is explained in detail, a deterministic network (or a deterministic IP network) is first explained briefly.
The Network has requirements for determinacy of time delay, bandwidth and time delay jitter faced to productive internet services, but the IP is essentially statistical multiplexing + storage forwarding, and although the techniques of Quality of Service (QoS) and Virtual Private Network (VPN) are assisted, the problems of packet loss and uncertainty of time delay cannot be completely solved. At present, corresponding deterministic technical researches are carried out on a physical layer, a link layer and a network layer in a network. The physical layer typical technology, the Flexible Ethernet (FlexE) technology, schedules different services to different communication channels based on time division multiplexing, and implements rigid isolation and resource guarantee of the services. The Time Sensitive Network (TSN) technology of the link layer guarantees the Time delay and certainty of the Time Sensitive stream by using a series of Time synchronization, resource reservation, flow shaping and other technologies through the TSN, provides Network guarantee for the services carried by the small-scale Network, such as vehicle-mounted and industrial control, and the related mechanism of the TSN has been referred by a plurality of standardization organizations and is applied in combination with a plurality of Network technologies. The DetNet uses a series of service protection and forwarding technologies to ensure the reliable transmission of service flow, and provides possibility for ensuring the end-to-end network certainty of long-distance transmission service.
As shown in fig. 1a, the deterministic IP network reference hierarchy model is divided into an application layer, a service layer, a forwarding layer and a bottom layer (usually, a physical layer and a link layer), which respectively provide corresponding functions for the deterministic IP network technology.
The application layer comprises functional modules such as a source end, a destination end and the like.
The service layer comprises functional modules of message sequencing, copy elimination, stream copying, stream merging, message coding, message decoding and the like. Where "message sequencing" provides sequence numbers for message replication and duplicate elimination. "duplicate elimination" discards any duplicate packets generated by deterministic network flow replication based on sequence numbers provided by the packet sequencing function. The deduplication function may also reorder the packets in order to recover the order of the packets from the stream that was interrupted by the packet loss. The "message sequencing" and "duplicate elimination" functions may be performed by higher layer transport protocols. The flow copy copies a plurality of messages belonging to the deterministic network service flow and delivers the messages from a plurality of deterministic network paths so as to ensure the reliable delivery of the service messages under the condition of network abnormity. Stream replication may be explicit replication and re-marking of packets, or may be achieved by techniques similar to ordinary multicast replication, for example. "flow merge" merges together member flows belonging to a particular deterministic network composite flow. Deterministic network flow merging performs packet replication and cancellation along with packet sequencing, replica cancellation, deterministic network flow replication. "message encoding" combines information from multiple deterministic network messages and sends the information as messages on different deterministic network member streams. "message decoding" takes messages from different deterministic network member streams and then computes the original deterministic network message from these messages.
The forwarding layer mainly provides functions of deterministic forwarding, resource reservation, explicit path and the like for a deterministic IP network. Explicit paths ensure that a fixed path is provided for deterministic flows through a deterministic IP network provisioning mechanism. Deterministic network devices may add specific markers in packets to support deterministic forwarding functions.
Operations, administration and maintenance (OAM) verifies the effectiveness of services under QoS constraints using in-band and out-of-band signaling and may add specific markers to packets to track network operation, delivery, or errors. This function may be present at any layer.
FIG. 1b is a schematic diagram of the architecture of a deterministic network; as shown in fig. 1b, the deterministic network (or deterministic IP network) includes terminals, edge nodes, intermediate nodes, relay nodes, and the like. The edge node has a service agent function, and needs to map a program flow sent by the terminal to a deterministic network, and if the program flow sent by the terminal is a deterministic IP flow, the function is not needed. In addition, the edge node also has a service layer and a forwarding layer. The relay node needs to sense the deterministic IP service and provide the service layer and forwarding layer functions. The intermediate node does not need to sense the deterministic IP service, has no service layer function and only has the function of a forwarding layer.
Based on the above deterministic network, the following embodiments of the present invention are proposed.
An embodiment of the present invention further provides an information processing method for OAM detection, which is applied to a first node, where the first node may be an edge node shown in fig. 1 b. Fig. 2 is a first flowchart illustrating an information processing method for OAM detection according to an embodiment of the present invention; as shown in fig. 2, the method includes:
step 101: a first node receives a first data packet sent by a terminal, wherein the first data packet comprises first requirement information; the first demand information represents deterministic traffic demands;
step 102: the first node determines a transmission path according to the first requirement information, and sends a second data packet to a second node according to the transmission path; the second data packet comprises second requirement information; the second requirement information represents the detection requirement of the deterministic service;
step 103: and the first node receives a third data packet sent by the second node, wherein the third data packet comprises a detection result of each node in the transmission path for the second requirement information.
In this embodiment, the first node may be an edge node having a service agent function, a service layer, and a forwarding layer. The terminal sends a data packet (denoted as a first data packet), which may also be referred to as a user data packet or a service data packet, etc. The first data packet includes first requirement information, or the first data packet includes service requirement information, where the first requirement information or the service requirement information may also be referred to as OAM information, that is, in this embodiment, OAM information and data to be carried are encapsulated in a data packet (denoted as a first data packet) and sent together with the data packet (denoted as a first data packet), so that OAM information is transmitted by using a real network transmission path, and then real network service quality is obtained, and real-time detection and resource control are ensured according to a service requirement and an actual transmission path of a service.
In some optional embodiments of the invention, the first data packet carries the first requirement information by extending an SLA. For example, the first data packet may carry the first requirement information through an extension field in the SLA data.
In this embodiment, the first requirement information includes, but is not limited to, at least one of the following: bandwidth requirement information, delay requirement information, jitter requirement information, reliability information (such as availability, packet loss rate and the like).
In this embodiment, the second requirement information includes at least one of the following information: the method comprises the steps of data flow required bandwidth, available time slot number, period mapping information related to data packet transmission and period window information.
In this embodiment, controlled data forwarding can be implemented via a deterministic network. Because the processing and transmission delay of the data message in the IP network are relatively fixed, a relatively stable periodic mapping relationship can be maintained between adjacent nodes. Illustratively, the first node transmits a data packet at cycle x; and a second node adjacent to the first node receives the data packet in the period y, and the period x and the period y have a mapping relation. Optionally, the second requirement information may include a period identifier, that is, the period mapping information related to the data packet transmission includes the period identifier; the second node may determine a period for transmitting the data packet based on the period identification.
In this embodiment, each node (including the first node and the second node) performs packet forwarding according to a cycle. For example, which periods are configured in advance for data transmission/reception. For another example, which time slots in which periods are configured for data transmission/reception are preset. Each node (including the first node and the second node) may transmit data according to the configured period or time slot for transmitting data, and receive data according to the configured period or time slot for receiving data.
In this embodiment, the period window information indicates the length of the period. A time slot may also be referred to as a time slot (timedrop), representing a unit of time. Multiple time slots may be included in a cycle.
Illustratively, the period window is fine-grained, for example, millisecond-sized, but may also be other finer-grained, and is not limited in this embodiment. In the embodiment of the invention, through fine-grained resource control, more refined resource control facing deterministic service is realized, and the detection of network resource performance with finer granularity is also realized.
In some optional embodiments of the present invention, an extension field of a header of the second packet carries the second requirement information; and/or an extension field of a message header of the third data packet carries the detection result.
In this embodiment, the first node may encapsulate the data packet by using any protocol, and carry information to be carried in the embodiment of the present invention in an extension field of a packet header of the data packet. For example, the second requirement information is carried in an extension field of a packet header of a second data packet sent from the first node to the second node; and carrying detection results of detection of each node in an extension field of a message header of the received third data packet.
In some optional embodiments, said sending the second packet to the second node according to the transmission path includes: the first node sends a first SRv6 data packet to the second node according to the transmission path; a Segment Routing Header (SRH) of the first SRv6 packet includes first in-band OAM information, and the first in-band OAM information includes the second requirement information. The SRv6 technology generally refers to Segment Routing (SR) Internet Protocol sixth edition (IPv6, Internet Protocol Version 6) data plane transport of IPv6 data packets.
In this embodiment, the first node determines a network transmission path according to the second requirement information carried by the first data packet and the network load condition, that is, determines an end-to-end routing transmission path, and carries the second requirement information by using SRv6 data packets; and the second requirement information is used for detecting corresponding resources by each second node.
The second requirement information is carried by In-band OAM (In-band OAM) information (which is recorded as first In-band OAM information), or the second requirement information may also be referred to as In-band OAM information.
In this embodiment, the first in-band OAM information is carried by the SRH of the first SRv6 packet. Illustratively, the first SRv6 data packet carries a source IP address and a destination IP address. SRH and load information.
Fig. 3 is a schematic diagram of an SRH structure in an information processing method for OAM detection according to an embodiment of the present invention; referring to FIG. 3, the SRH includes a plurality of Segment (Segment) sequences, such as Segment [0], Segment [1] … Segment [ n ] shown in the figure, which are combined to form path SRv 6. Wherein each Segment (Segment) sequence is 128 bits (bit), and each 128-bit Segment (Segment) sequence is divided into three parts, including: location identity (Loc, Locator), Function identity (Func, Function), and variables (Args); where Loc represents an identifier assigned to a network node in the network and may be used for routing and forwarding packets. Loc is a variable length part used to adapt to networks of different sizes. Func represents an ID value assigned by the device to the local forwarding instruction, which can be used to express a forwarding action that needs to be performed by the device; wherein different forwarding behaviors may be represented by different ID values. Args denotes the parameters required by the forwarding instructions when executed, which may contain flows, services or any other relevant variable information. The SRH further includes TLV (T represents type, L represents length, and V represents value) fields, and in this embodiment, the first in-band OAM information may be carried in the TLV fields of the SRH.
Fig. 4 is a schematic structural diagram of in-band OAM information in an information processing method for OAM detection according to an embodiment of the present invention, and as shown in fig. 4, the in-band OAM information includes an Option Type (Option Type) field, an Option Data length (Opt Data Len) field, an OAM trace Type (OAM-trace-Type) field, a remaining element (elements-left field), and a plurality of Node Data list (Node Data list) fields; the multiple Node Data lists may also be referred to as Data spaces (Data spaces). Illustratively, the unused bits 4-7 in the OAM-trace-type field are used to indicate a deterministic resource control type, that is, each detection requirement information may be indicated by the 4 th bit to the 7 th bit in the OAM-trace-type field. The Node data list field may be configured to carry detection results of each second Node, for example, a first second Node may fill the detection results in the Node data list [0], a second Node may fill the detection results in the Node data list [1], and so on, in the process of transmitting a data packet along a network transmission path, the detection results may be filled in the data packet after passing through each second Node, and finally, the data packet is returned to the first Node, so that the first Node may obtain the detection results of all the second nodes for the second requirement information.
In some optional embodiments of the present invention, the receiving, by the first node, a third packet sent by the second node includes: the first node receives a second SRv6 data packet sent by the second node; the SRH of the second SRv6 packet includes second in-band OAM information, where the second in-band OAM information includes a detection result of each node in the transmission path for the second requirement information.
In this embodiment, after the first node sends out the second data packet, the second data packet reaches the first second node, and the second node performs detection according to the second requirement information in the second data packet to obtain a corresponding detection result, generates a data entry, and fills the detection result (or the data entry) in a data list field of a node, for example, as shown in fig. 4. The second node continues to transmit the data packet according to the transmission path, and sends the data packet to the next node until the last node returns the data packet to the first node; here, the data packet sent by the second node and received by the first node is marked as a third data packet; the third data packet (i.e., the second Rv6 data packet) carries second in-band OAM information, where the second in-band OAM information includes a detection result of each node in the transmission path for the second requirement information, and optionally, the second in-band OAM information may also include second requirement information.
Based on the foregoing embodiment, an embodiment of the present invention further provides an information processing method for OAM detection, which is applied to a second node, where the second node may be an intermediate node shown in fig. 1 b. Fig. 5 is a second flowchart illustrating an information processing method for OAM detection according to an embodiment of the present invention; as shown in fig. 5, the method includes:
step 201: the second node receives a fourth data packet sent by the first node or other second nodes, wherein the fourth data packet comprises second requirement information; the second requirement information represents a detection requirement of deterministic traffic;
step 202: the second node carries out detection based on the second requirement information to obtain a detection result;
step 203: and the second node sends a fifth data packet according to the transmission path corresponding to the fourth data packet, wherein the fifth data packet carries the detection result.
In this embodiment, if the second node is a first second node in the transmission path after the first node, the second node receives a fourth data packet sent by the first node, where the first data packet is equivalent to the second data packet in the foregoing embodiment; if the second node is a second node in the transmission path after the first node or after the second node, the second node receives a fourth data packet sent by another second node, where the fourth data packet may be different from the second data packet in the foregoing embodiment; the difference is that only the second requirement information is included in the second data packet; and the fourth data packet may further include, in addition to the second requirement information, a detection result obtained by the other second node for the second requirement information.
In this embodiment, after the second node performs detection according to the second requirement information to obtain a detection result, a data entry is generated, and the detection result (or the data entry) is filled in a node data list field shown in fig. 4, for example. And the second node continues to transmit the data packet according to the transmission path.
In this embodiment, the second requirement information includes at least one of the following information: the data flow demand bandwidth, the available time slot number, the period mapping information related to the data packet transmission and the period window information.
In this embodiment, each node (including the first node and the second node) performs packet forwarding according to a cycle. For example, which periods are configured in advance for data transmission/reception. For another example, which time slots in which periods are configured for data transmission/reception are preset. Each node (including the first node and the second node) may transmit data according to the configured period or time slot for transmitting data, and receive data according to the configured period or time slot for receiving data.
Illustratively, the period window is fine-grained, for example, millisecond-sized, but may also be other finer-grained, and is not limited in this embodiment. In the embodiment of the invention, through fine-grained resource control, each second node is also detected according to the period or the time slot, so that more refined resource control facing deterministic service is realized, and the detection of the performance of network resources with finer granularity is also realized.
In some optional embodiments of the present invention, an extension field of a header of the fourth data packet carries the second requirement information; and/or an extension field of a message header of the fifth data packet carries the detection result.
In this embodiment, the first node and the second node may use any protocol to encapsulate the data packet, and carry information to be carried in the embodiment of the present invention in the extension field of the packet header of the data packet. For example, the second requirement information is carried in an extension field of a packet header of a fourth data packet sent to the second node by the first node or other second nodes; and the extension field of the message header of the fifth data packet sent by the second node carries the detection result.
In some optional embodiments, the receiving, by the second node, a fourth data packet sent by the first node or another second node includes: the second node receives a third SRv6 data packet sent by the first node or other second nodes; the SRH of the third SRv6 packet includes third in-band OAM information, which includes the second demand information.
Illustratively, the TLV field of the SRH of the third SRv6 packet may carry third in-band OAM information, and bits 4 to 7 in the OAM-trace-type field in the third in-band OAM information indicate respective detection requirement information.
In some optional embodiments, the sending, by the second node, a fifth data packet according to a transmission path corresponding to the fourth data packet includes: the second node sends a fourth SRv6 data packet according to the transmission path corresponding to the fourth data packet; the SRH of the fourth SRv6 packet includes fourth in-band OAM information, which includes a detection result for the second demand information.
Illustratively, the TLV field of the SRH of the fourth SRv6 packet may carry fourth in-band OAM information, and bits 4 to 7 in an OAM-trace-type field in the fourth in-band OAM information indicate respective detection requirement information; a Node data list field in the fourth in-band OAM information may be used to carry a detection result obtained by the second Node.
By adopting the technical scheme of the embodiment of the invention, the OAM information and data to be carried are packaged in the data packet and transmitted along with the data packet according to the real transmission path of the network, and each second node can detect the OAM information and send the detection result along with the data packet, so that the first node can obtain the detection result of each node in the transmission path through the transmission of the data packet.
The information processing method according to the embodiment of the present invention is described below with reference to a specific example. In this example, the first node is taken as an edge node, and the second node is taken as an intermediate node.
Fig. 6 is an interaction flow diagram of an information processing method for OAM detection according to an embodiment of the present invention; as shown in fig. 6, includes:
step 0: and information such as network resources is announced between the edge node and the destination node.
Step 1: and the terminal sends a data packet to the edge node, wherein the data packet carries the expansion SLA.
The data packet is denoted as a first data packet in the foregoing embodiment, and the service requirement information is carried in the first data packet through an extension field of SLA data, that is, the first requirement information in the foregoing embodiment is carried through the extension field of the SLA.
Step 2: and the edge node sends a data packet to the destination node sequentially through each intermediate node, wherein the data packet carries the in-band OAM information.
In this embodiment, the data packet is specifically an SRv6 data packet; SRv6 the TLV fields of the SRH in the packet carry in-band OAM information. Here, for example, bits 4 to 7 in the OAM-trace-type field in the in-band OAM information indicate respective detection requirement information (i.e., the second requirement information in the foregoing embodiment). And when the data packet reaches one intermediate Node, the intermediate Node detects based on each piece of detection requirement information, generates a data table item according to the detection result, fills the data table item into a Node data list field corresponding to the intermediate Node, and transmits the data packet to the next Node until the data packet reaches a destination Node and returns.
And step 3: and the destination node sends a data packet to the edge node through each intermediate node in sequence, wherein the data packet carries in-band OAM information. The in-band OAM information may be, for example, in-band OAM information describing a detection result obtained by each intermediate node.
Here, after the edge node obtains the detection result of each intermediate node, the edge node adjusts subsequent resource control and policy execution according to the detection result, for example, the subsequent deterministic traffic flow based on the current detection result can more efficiently execute path calculation and resource reservation on the path, and provide the best user experience.
And 4, step 4: the edge node returns a data packet to the terminal.
Based on the foregoing embodiment, an embodiment of the present invention further provides an information processing apparatus for OAM detection, where the apparatus is applied in the first node. Fig. 7 is a first schematic structural diagram illustrating a composition of an information processing apparatus for OAM detection according to an embodiment of the present invention; as shown in fig. 7, the apparatus includes: a first receiving unit 11, a determining unit 12, and a first transmitting unit 13; wherein the content of the first and second substances,
the first receiving unit 11 is configured to receive a first data packet sent by a terminal, where the first data packet includes first requirement information; the first demand information represents a deterministic traffic demand;
the determining unit 12 is configured to determine a transmission path according to the first requirement information;
the first sending unit 13 is configured to send a second data packet to a second node according to the transmission path determined by the determining unit 12; the second data packet comprises second requirement information; the second requirement information represents a detection requirement of deterministic traffic;
the first receiving unit 11 is further configured to receive a third data packet sent by the second node, where the third data packet includes a detection result of each node in the transmission path for the second requirement information.
In some optional embodiments of the invention, the first data packet carries the first requirement information by extending an SLA.
In some optional embodiments of the invention, the second requirement information comprises at least one of: the data flow demand bandwidth, the available time slot number, the period mapping information related to the data packet transmission and the period window information.
In some optional embodiments of the present invention, an extension field of a header of the second packet carries the second requirement information; and/or an extension field of a message header of the third data packet carries the detection result.
In some optional embodiments of the present invention, the first sending unit 13 is configured to send a first SRv6 packet to the second node according to the transmission path; the SRH of the first SRv6 packet includes first in-band OAM information, which includes the second demand information.
In some optional embodiments of the present invention, the first receiving unit 11 is configured to receive a second SRv6 data packet sent by the second node; the SRH of the second SRv6 packet includes second in-band OAM information, where the second in-band OAM information includes a detection result of each node in the transmission path for the second requirement information.
In the embodiment of the present invention, the determining Unit 12 in the apparatus may be implemented by a Central Processing Unit (CPU), a Digital Signal Processor (DSP), a Micro Control Unit (MCU) or a Programmable Gate Array (FPGA) in practical application; the first receiving unit 11 and the first sending unit 13 of the device can be realized by a communication module (including a basic communication suite, an operating system, a communication module, a standardized interface, a protocol and the like) and a transceiving antenna in practical application.
The embodiment of the invention also provides an information processing device for OAM detection, which is applied to the second node. Fig. 8 is a schematic structural diagram of a second configuration of an information processing apparatus for OAM detection according to an embodiment of the present invention; as shown in fig. 8, the apparatus includes: a second receiving unit 21, a detecting unit 22, and a second transmitting unit 23; wherein the content of the first and second substances,
the second receiving unit 21 is configured to receive a fourth data packet sent by the first node or another second node, where the fourth data packet includes second requirement information; the second requirement information represents a detection requirement of deterministic traffic;
the detecting unit 22 is configured to perform detection based on the second requirement information to obtain a detection result;
the second sending unit 23 is configured to send a fifth data packet according to the transmission path corresponding to the fourth data packet, where the fifth data packet carries the detection result obtained by the detecting unit 22.
In some optional embodiments of the invention, the second requirement information comprises at least one of: the data flow demand bandwidth, the available time slot number, the period mapping information related to the data packet transmission and the period window information.
In some optional embodiments of the present invention, an extension field of a header of the fourth data packet carries the second requirement information; and/or an extension field of a message header of the fifth data packet carries the detection result.
In some optional embodiments of the present invention, the second receiving unit 21 is configured to receive a third SRv6 data packet sent by the first node or another second node; the SRH of the third SRv6 packet includes third in-band OAM information, which includes the second demand information.
In some optional embodiments of the present invention, the second sending unit 23 is configured to send a fourth SRv6 data packet according to a transmission path corresponding to the fourth data packet; the SRH of the fourth SRv6 packet includes fourth in-band OAM information, which includes a detection result for the second demand information.
In the embodiment of the present invention, the detection unit 22 in the apparatus can be implemented by a CPU, a DSP, an MCU or an FPGA in practical application; the second receiving unit 21 and the second sending unit 23 in the device can be realized by a communication module (including a basic communication suite, an operating system, a communication module, a standardized interface, a protocol and the like) and a transceiving antenna in practical application.
It should be noted that: in the information processing apparatus for OAM detection provided in the above embodiment, only the above-mentioned division of each program module is exemplified when performing information processing, and in practical applications, the above-mentioned processing allocation may be completed by different program modules according to needs, that is, the internal structure of the apparatus is divided into different program modules to complete all or part of the above-mentioned processing. In addition, the information processing apparatus for OAM detection provided in the foregoing embodiment and the information processing method embodiment for OAM detection belong to the same concept, and specific implementation processes thereof are detailed in the method embodiment and are not described again here.
Fig. 9 is a schematic diagram of a hardware structure of the node device according to the embodiment of the present invention, and as shown in fig. 9, the node device includes a memory 32, a processor 31, and a computer program stored in the memory 32 and operable on the processor 31, where when the processor 31 executes the computer program, the foregoing steps of the information processing method for OAM detection applied to the first node according to the embodiment of the present invention are implemented; alternatively, the processor 31 implements the steps of the information processing method for OAM detection applied in the second node in the foregoing embodiment of the present invention when executing the program.
The node device may further include a network interface 33. It will be appreciated that the various components in the node device are coupled together by a bus system 34. It will be appreciated that bus system 34 is used to enable communications among these components. The bus system 34 includes a power bus, a control bus, and a status signal bus in addition to the data bus. For clarity of illustration, however, the various buses are labeled as bus system 34 in fig. 9.
It will be appreciated that the memory 32 can be either volatile memory or nonvolatile memory, and can include both volatile and nonvolatile memory. Among them, the nonvolatile Memory may be a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), a magnetic random access Memory (FRAM), a Flash Memory (Flash Memory), a magnetic surface Memory, an optical disk, or a Compact Disc Read-Only Memory (CD-ROM); the magnetic surface storage may be disk storage or tape storage. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced DRAM), Synchronous Dynamic Random Access Memory (SLDRAM), Direct Memory (DRmb Access), and Random Access Memory (DRAM). The memory 32 described in connection with the embodiments of the invention is intended to comprise, without being limited to, these and any other suitable types of memory.
The method disclosed in the above embodiments of the present invention may be applied to the processor 31, or implemented by the processor 31. The processor 31 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 31. The processor 31 described above may be a general purpose processor, a DSP, or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. Processor 31 may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed by the embodiment of the invention can be directly implemented by a hardware decoding processor, or can be implemented by combining hardware and software modules in the decoding processor. The software modules may be located in a storage medium located in the memory 32, and the processor 31 reads the information in the memory 32 and performs the steps of the aforementioned methods in conjunction with its hardware.
In an exemplary embodiment, the node Device may be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, Programmable Logic Devices (PLDs), Complex Programmable Logic Devices (CPLDs), FPGAs, general purpose processors, controllers, MCUs, microprocessors (microprocessors), or other electronic components for performing the aforementioned methods.
In an exemplary embodiment, the present invention further provides a computer readable storage medium, such as a memory 32, comprising a computer program, which is executable by a processor 31 of a node device to perform the steps of the aforementioned method. The computer readable storage medium can be Memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface Memory, optical disk, or CD-ROM; or may be various devices including one or any combination of the above memories.
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the foregoing steps of the information processing method for OAM detection applied in the first node in the embodiment of the present invention; alternatively, the program, when executed by the processor, implements the steps of the information processing method for OAM detection applied in the second node in the foregoing embodiments of the present invention.
The methods disclosed in the several method embodiments provided in the present application may be combined arbitrarily without conflict to obtain new method embodiments.
Features disclosed in several of the product embodiments provided in the present application may be combined in any combination to yield new product embodiments without conflict.
The features disclosed in the several method or apparatus embodiments provided in the present application may be combined arbitrarily, without conflict, to arrive at new method embodiments or apparatus embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, all the functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: a removable storage device, a ROM, a RAM, a magnetic or optical disk, or various other media that can store program code.
Alternatively, the integrated unit of the present invention may be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as a separate product. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or a part contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a removable storage device, a ROM, a RAM, a magnetic or optical disk, or various other media that can store program code.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (24)
1. An operation, maintenance and management (OAM) detection processing method is characterized by comprising the following steps:
a first node receives a first data packet sent by a terminal, wherein the first data packet comprises first requirement information; the first demand information represents a deterministic traffic demand;
the first node determines a transmission path according to the first requirement information, and sends a second data packet to a second node according to the transmission path; the second data packet comprises second requirement information; the second requirement information represents a detection requirement of deterministic traffic;
and the first node receives a third data packet sent by the second node, wherein the third data packet comprises a detection result of each node in the transmission path for the second requirement information.
2. The method according to claim 1, wherein the first data packet carries the first requirement information through an extended Service Level Agreement (SLA).
3. The method of claim 1, wherein the second demand information includes at least one of: the data flow demand bandwidth, the available time slot number, the period mapping information related to the data packet transmission and the period window information.
4. The method according to any one of claims 1 to 3, wherein an extension field of a header of the second data packet carries the second requirement information; and/or the presence of a gas in the gas,
and the extension field of the message header of the third data packet carries the detection result.
5. The method of claim 4, wherein said sending the second packet to the second node along the transmission path comprises:
the first node sends a first SRv6 data packet to the second node according to the transmission path; the segment routing header SRH of the first SRv6 packet includes first in-band OAM information, which includes the second demand information.
6. The method of claim 4, wherein the first node receiving the third data packet sent by the second node comprises:
the first node receives a second SRv6 data packet sent by the second node; the SRH of the second SRv6 packet includes second in-band OAM information, where the second in-band OAM information includes a detection result of each node in the transmission path for the second requirement information.
7. An operation, maintenance and management (OAM) detection processing method is characterized by comprising the following steps:
the second node receives a fourth data packet sent by the first node or other second nodes, wherein the fourth data packet comprises second requirement information; the second requirement information represents a detection requirement of deterministic traffic;
the second node carries out detection based on the second requirement information to obtain a detection result;
and the second node sends a fifth data packet according to the transmission path corresponding to the fourth data packet, wherein the fifth data packet carries the detection result.
8. The method of claim 7, wherein the second demand information includes at least one of: the data flow demand bandwidth, the available time slot number, the period mapping information related to the data packet transmission and the period window information.
9. The method according to claim 7 or 8, wherein an extension field of a header of the fourth packet carries the second requirement information; and/or the presence of a gas in the gas,
and the extension field of the message header of the fifth data packet carries the detection result.
10. The method of claim 9, wherein the second node receives a fourth packet sent by the first node or another second node, and comprises:
the second node receives a third SRv6 data packet sent by the first node or other second nodes; the SRH of the third SRv6 packet includes third in-band OAM information, which includes the second demand information.
11. The method of claim 9, wherein the sending, by the second node, a fifth data packet according to the transmission path corresponding to the fourth data packet, comprises:
the second node sends a fourth SRv6 data packet according to the transmission path corresponding to the fourth data packet; the SRH of the fourth SRv6 packet includes fourth in-band OAM information, which includes a detection result for the second demand information.
12. An information processing apparatus for OAM detection, the apparatus being applied to a first node, the apparatus comprising: the device comprises a first receiving unit, a determining unit and a first sending unit; wherein the content of the first and second substances,
the first receiving unit is configured to receive a first data packet sent by a terminal, where the first data packet includes first requirement information; the first demand information represents deterministic traffic demands;
the determining unit is used for determining a transmission path according to the first requirement information;
the first sending unit is configured to send a second data packet to a second node according to the transmission path determined by the determining unit; the second data packet comprises second requirement information; the second requirement information represents a detection requirement of deterministic traffic;
the first receiving unit is further configured to receive a third data packet sent by the second node, where the third data packet includes a detection result of each node in the transmission path for the second requirement information.
13. The apparatus of claim 12, wherein the first data packet carries the first requirement information via an extended Service Level Agreement (SLA).
14. The apparatus of claim 12, wherein the second demand information comprises at least one of: the data flow demand bandwidth, the available time slot number, the period mapping information related to the data packet transmission and the period window information.
15. The apparatus according to any one of claims 12 to 14, wherein an extension field of a header of the second data packet carries the second requirement information; and/or the presence of a gas in the gas,
and the extension field of the message header of the third data packet carries the detection result.
16. The apparatus of claim 15, wherein the first sending unit is configured to send a first SRv6 packet to the second node according to the transmission path; the segment routing packet header SRH of the first SRv6 packet includes first in-band OAM information, and the first in-band OAM information includes the second requirement information.
17. The apparatus according to claim 15, wherein the first receiving unit is configured to receive a second SRv6 data packet sent by the second node; the SRH of the second SRv6 packet includes second in-band OAM information, where the second in-band OAM information includes a detection result of each node in the transmission path for the second requirement information.
18. An information processing apparatus for OAM detection, the apparatus being applied to a second node, the apparatus comprising: the device comprises a second receiving unit, a detecting unit and a second sending unit; wherein the content of the first and second substances,
the second receiving unit is configured to receive a fourth data packet sent by the first node or another second node, where the fourth data packet includes second requirement information; the second requirement information represents a detection requirement of deterministic traffic;
the detection unit is used for detecting based on the second requirement information to obtain a detection result;
the second sending unit is configured to send a fifth data packet according to a transmission path corresponding to the fourth data packet, where the fifth data packet carries the detection result obtained by the detecting unit.
19. The apparatus of claim 18, wherein the second demand information comprises at least one of: the data flow demand bandwidth, the available time slot number, the period mapping information related to the data packet transmission and the period window information.
20. The apparatus according to claim 18 or 19, wherein an extension field of a header of the fourth packet carries the second requirement information; and/or the presence of a gas in the atmosphere,
and the extension field of the message header of the fifth data packet carries the detection result.
21. The apparatus according to claim 20, wherein the second receiving unit is configured to receive a third SRv6 data packet sent by the first node or another second node; the SRH of the third SRv6 packet includes third in-band OAM information, which includes the second demand information.
22. The apparatus according to claim 20, wherein the second sending unit is configured to send a fourth SRv6 data packet according to a transmission path corresponding to the fourth data packet; the SRH of the fourth SRv6 packet includes fourth in-band OAM information, which includes a detection result for the second demand information.
23. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 6; alternatively, the program is adapted to carry out the steps of the method of any of claims 7 to 11 when executed by a processor.
24. A node device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the program implements the steps of the method of any one of claims 1 to 6; alternatively, the processor implements the steps of the method of any one of claims 7 to 11 when executing the program.
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