CN115314446B - Message bandwidth compensation method, device and equipment - Google Patents
Message bandwidth compensation method, device and equipment Download PDFInfo
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- CN115314446B CN115314446B CN202210869010.3A CN202210869010A CN115314446B CN 115314446 B CN115314446 B CN 115314446B CN 202210869010 A CN202210869010 A CN 202210869010A CN 115314446 B CN115314446 B CN 115314446B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/50—Queue scheduling
- H04L47/52—Queue scheduling by attributing bandwidth to queues
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Abstract
The application relates to a method, a device and equipment for compensating message bandwidth, which are characterized by comprising the following steps: applying corresponding logic resources in the entering direction according to the tunnel type of the service flow, wherein the logic resources are used for identifying the service type corresponding to the tunnel type; setting an ACL (access control list) table entry by taking the logic resource and the outlet slot as KEY values, and matching different compensation values for messages of different service types according to the ACTION of the ACL table entry; and determining a final compensation value according to the compensation value, and carrying the final compensation value to an output direction through a message system head and performing bandwidth compensation in the output direction. The message scheduling efficiency of different services can be improved and accurate compensation can be performed.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, and a device for packet bandwidth compensation.
Background
In the rapid development process of 5G, the network transmission capability is continuously enhanced, the network quality is also higher, and the network transmission is highly sensitive to packet loss, time delay and disorder. Currently, when the switch chip performs TM (Traffic Manager) scheduling, the mainstream logic is advanced TM scheduling, and then the message content is processed and edited in the pipeline in the in-out direction (as shown in fig. 2). If the content of the message is modified (adding and deleting labels, etc.) at ETPP (EGRESS TRANSMIT PACKET Process), the actual scheduling effect has corresponding errors, which results in the problems of large network bandwidth delay, packet loss of high-priority messages, etc.
Aiming at the problem of accurate message compensation of different services on the existing rack-mounted forwarding device in the related art, no solution exists yet.
Disclosure of Invention
The embodiment of the invention provides a method, a device and equipment for compensating message bandwidth, which can improve the message scheduling efficiency of different services and perform accurate compensation.
The embodiment of the invention provides a message bandwidth compensation method, which is characterized by comprising the following steps:
applying corresponding logic resources in the entering direction according to the tunnel type of the service flow, wherein the logic resources are used for identifying the service type corresponding to the tunnel type;
Setting an ACL (access control list) table entry by taking the logic resource and the outlet slot as KEY values, and matching different compensation values for messages of different service types according to the ACTION of the ACL table entry;
And determining a final compensation value according to the compensation value, and carrying the final compensation value to an output direction through a message system head and performing bandwidth compensation in the output direction.
In some embodiments, the step of bringing the final compensation value to an outgoing direction through a header of the messaging system and performing bandwidth compensation in the outgoing direction includes the steps of:
After the message system head brings the final compensation value to the downlink, automatically filling the message length according to the final compensation value to realize message compensation;
the message compensation occurs in the TM scheduling stage, and the compensated message is forwarded by ETPP after the TM scheduling is completed.
In some embodiments, the setting the ACL entry with the logical resource and the exit slot as KEY values includes the steps of:
taking the logical resource ID number and the exit slot number of the service flow to which the message belongs as KEY values, taking the ACTION as compensation ACTION, and setting ACL table items;
and the compensation action is used for compensating the preset compensation value on the corresponding outlet when compensating the message according to the KEY value.
In some embodiments, the compensation value is calculated according to the length of the outgoing device of the message, the original length, the fixed overhead, and the chip self-compensation.
In some embodiments, the method for calculating the compensation value is as follows:
compensation value = length of the message output device-original length of message + fixed overhead + chip self-compensation.
In some embodiments, the compensating the preset compensation value on the corresponding outlet includes the steps of:
Compensating the compensation value on the NNI port under the packaging scene;
in the unpacking scene, the compensation value is compensated on the UNI port.
In some embodiments, the compensation value is directly used as the final compensation value when the final compensation value is determined according to the compensation value.
In some embodiments, the determining a final compensation value according to the compensation value includes the steps of:
taking the compensation value as a service compensation value;
setting a port compensation value for an ingress port;
And taking the superposition value of the port compensation value and the service compensation value as a final compensation value.
In a second aspect, an embodiment of the present invention provides a device for compensating a packet bandwidth, which is characterized in that the device includes:
a compensation value acquisition module for:
applying corresponding logic resources in the entering direction according to the tunnel type of the service flow, wherein the logic resources are used for identifying the service type corresponding to the tunnel type;
Setting an ACL (access control list) table entry by taking the logic resource and the outlet slot as KEY values, and matching different compensation values for messages of different service types according to the ACTION of the ACL table entry;
determining a final compensation value according to the compensation value;
The message compensation module is used for:
And carrying the final compensation value to an output direction through a message system head and performing bandwidth compensation in the output direction.
In a third aspect, an embodiment of the present invention provides an apparatus, including: at least one processor; and a memory coupled to the at least one processor, the memory containing instructions stored therein, which when loaded and executed by the processor, implement the method of any of the method embodiments.
The technical scheme provided by the invention has the beneficial effects that:
the embodiment of the invention provides a message bandwidth compensation method, a device and equipment, which are used for carrying out message compensation when a message is sent to TM scheduling, and then sending the compensated message to ETPP for processing. Firstly, different logic resources are respectively applied in the incoming direction according to different tunnel types and used for identifying different service types. And then the logic resource and the outlet slot are used as KEY values together to set ACL table entries, so that different service mappings with different compensation values are realized. And carrying the compensation value to the output direction through the message system head and performing bandwidth compensation in the output direction. The scheduling abnormality caused by the fact that the content of the message is modified after the scheduling is completed is avoided, compensation values can be set for different services and different slots respectively, and the problems of inaccurate scheduling and large forwarding delay of the conventional digital communication equipment are solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, 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 invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flow chart of a method for compensating a message bandwidth according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a process flow of performing TM scheduling on a switching chip according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an MPLS packet format according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an SRV6 encapsulation message format according to an embodiment of the present invention;
FIG. 5 is a schematic diagram showing that different services provided in the embodiment of the present invention correspond to different resource types respectively;
Fig. 6 is a schematic structural diagram of a packet bandwidth compensation device according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, an embodiment of the present invention provides a method for compensating a packet bandwidth, which includes the steps of:
S100, applying corresponding logic resources in an entering direction according to the tunnel type of the service flow, wherein the logic resources are used for identifying the service type corresponding to the tunnel type;
S200, setting an ACL table entry by taking the logic resource and the outlet slot as KEY values, and matching different compensation values for messages of different service types according to the ACTION of the ACL table entry;
S300, determining a final compensation value according to the compensation value, taking the final compensation value as a service compensation value, taking the final compensation value to an output direction through a message system head, and performing bandwidth compensation in the output direction.
It should be noted that, currently, the main chip processing flow is divided into uplink ingress (in direction) and downlink egress (out direction). The uplink flow is responsible for looking up the forwarding table, the table looking up result is carried to the downlink through the system head, message encapsulation modification is completed in the downlink, and then the message is sent out from the output port.
Before S100, the local device first obtains the type of the corresponding service in the incoming direction, for example, MPLS SR has different label layer numbers/SRV 6 has different SID layer numbers, and the compensation value is changed due to different packet contents. As shown in fig. 5, different logical resources may be used to distinguish each service creation.
It can be understood that, aiming at the problem that the actual scheduling effect will generate corresponding error in the manner of scheduling advanced message TM and then processing message editing in the pipeline in the related art, the embodiment of the invention proposes that a correction value (compensation value) is set for the message lengths of different service types when TM scheduling is performed, so as to realize more accurate scheduling.
In the embodiment of the invention, the message compensation is performed firstly when the message is sent to the TM scheduling, and then the compensated message is sent to ETPP for processing. Firstly, different logic resources are respectively applied in the incoming direction according to different tunnel types and used for identifying different service types. And then the logic resource and the outlet slot are used as KEY values together to set ACL table entries, so that different service mappings with different compensation values are realized. And carrying the compensation value to the output direction through the message system head and performing bandwidth compensation in the output direction. The scheduling abnormality caused by the fact that the content of the message is modified after the scheduling is completed is avoided, compensation values can be set for different services and different slots respectively, and the problems of inaccurate scheduling and large forwarding delay of the conventional digital communication equipment are solved.
In some embodiments, when the logical resource and the exit slot are used together as KEY values to set an ACL entry in S200, the logical resource ID number and the exit slot number of the service flow to which the packet belongs may be used as KEY values, the ACTION is a compensation ACTION, and the ACL entry is set;
and the compensation action is used for compensating the preset compensation value on the corresponding outlet when compensating the message according to the KEY value.
It will be appreciated that ACL entries are TCAM matches, divided into two parts, KEY and ACTION, each KEY having a corresponding MASK, and performing a comparison according to the KEY and MASK, and executing the corresponding ACTION when the matches. The content of the ACTION is the filled compensation ACTION and the corresponding compensation value.
It can be understood that, as shown in fig. 5, the device applies for different logic resources according to different tunnel services, such as different label layer numbers of MPLS/different SID layer numbers of SRV6, to identify different service types, and uses the different service types and the egress slot as KEY values together to set ACL entries and map compensation values. And flexible configuration and precise scheduling of different services are realized.
In some embodiments, the compensation value may be calculated according to the length of the outgoing device of the message, the original length, the fixed overhead, and the chip self-compensation. Preferably, the compensation value is calculated by the following formula, compensation value = length of the message output device-original length of message + fixed overhead + chip self-compensation.
The fixed overhead is ipg+crc=24 byte, where IPG is frame gap (INTERPACKETGAP), CRC is cyclic redundancy check (Cyclic Redundancy Check),
It can be understood that, considering that the L2VPN and L3VPN services bind to the same MPLS/SRV6 tunnel, the message length change values differ by eth_mac+eth_type=14 bytes, so that the packet header length before the forwarding head of the L3VPN service can be automatically subtracted by setting the chip trunk self-compensation enabling bit, thereby realizing different services, and even if the same tunnel is bound, the compensation values can be unified. The chip self-compensation is added in the ACTION to offset the compensation value of the part considering the chip self-compensation. Therefore, the chip self-compensation is to help to find the correct forwarding head of the message, the chip self-compensation values of the two-layer and three-layer services are different, the lengths of the message output devices are also different, and after the two are offset, the actual compensation values of the two-layer and three-layer services can be consistent finally.
In some embodiments, when compensating the preset compensation value on the corresponding outlet, if in the packaging scenario, compensating the compensation value on the NNI port (Network Node Interface or Network to Network Interface, network side interface); if the decapsulation scenario is in place, the compensation value is compensated on the UNI port (user network interface), the user network interface).
It can be understood that when the forwarding chip receives a service flow, ACL (Access Control Lis, access control list) matching is performed according to the logic resource and the egress slot, each service flow is mapped to a corresponding compensation value, and the compensation is performed on the corresponding egress, the compensation is performed on the NNI port under the encapsulation scene, and the decapsulation scene is performed on the UNI port.
In some embodiments, when determining the final compensation value according to the compensation value in S300, the compensation value is directly used as the final compensation value, and after the final compensation value is brought to the downlink through the header of the message system, the message length is automatically filled according to the compensation value to implement the message compensation.
It should be noted that the compensation is an action, which means that the message length is filled, and how much is determined by the compensation value, and the compensation occurs in the scheduling stage. The padding may be either forward or reverse depending on whether the offset is positive or negative and the offset is determined by the traffic type. For example, in the case of encapsulation, the compensation value is more positive, and in the case of decapsulation, the compensation value is more negative.
In some embodiments, when determining the final compensation value according to the compensation value in S300, the compensation value is used as the service compensation value (i.e. the compensation value set by the ACTION in step S200), and the port compensation value is set for the ingress port, and the superposition value of the port compensation value and the service compensation value is used as the final compensation value.
It can be appreciated that, in view of the scenario of SRV6 encapsulation, the more the number of SID layers are encapsulated, the larger the message length change, the larger the required compensation value, and the case that the maximum compensation value supported by the chip is exceeded may occur. And (3) superposing the service compensation for use by setting a port compensation value. When compensation is carried out, the port compensation value is subtracted from all the service messages entering from the equipment, and then the corresponding service compensation value is subtracted from the service flow. That is, the message subtracts the two compensation values in the primary processing flow of the chip, and the fixed compensation of the access port and the service compensation of ACL configuration are added, so that the superposition effect is achieved, and the limit of the upper limit of the service compensation value can be solved.
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).
It should be noted that in the present invention, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is only a specific embodiment of the invention to enable those skilled in the art to understand or practice the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The message bandwidth compensation method is characterized by comprising the following steps:
applying corresponding logic resources in the entering direction according to the tunnel type of the service flow, wherein the logic resources are used for identifying the service type corresponding to the tunnel type;
Setting an ACL (access control list) table entry by taking the logic resource and the outlet slot as KEY values, and matching different compensation values for messages of different service types according to the ACTION of the ACL table entry;
determining a final compensation value according to the compensation value, and carrying the final compensation value to an output direction through a message system head and performing bandwidth compensation in the output direction;
The step of setting the ACL table entry by taking the logic resource and the outlet slot as KEY values comprises the following steps: setting ACL list item with the logical resource ID number and the outlet slot number of the service flow to which the message belongs as KEY value and the content of the ACTION as compensation ACTION and corresponding compensation value; the compensation action is used for compensating a preset compensation value on a corresponding outlet when compensating the message according to the KEY value;
The step of bringing the final compensation value to an output direction through a message system head and performing bandwidth compensation in the output direction comprises the following steps: after the message system head brings the final compensation value to the downlink, automatically filling the message length according to the final compensation value to realize message compensation; the message compensation occurs in the TM scheduling stage, and the compensated message is forwarded by ETPP after the TM scheduling is completed.
2. The method of claim 1, wherein the compensation value is calculated according to a length of an outgoing device of the message, an original length, a fixed overhead, and a chip self-compensation.
3. The method for compensating message bandwidth according to claim 2, wherein the method for calculating the compensation value is as follows:
compensation value = length of the message output device-original length of message + fixed overhead + chip self-compensation.
4. The method for compensating message bandwidth according to claim 1, wherein said compensating the preset compensation value on the corresponding exit comprises the steps of:
Compensating the compensation value on the NNI port under the packaging scene;
in the unpacking scene, the compensation value is compensated on the UNI port.
5. The method of claim 4, wherein the final compensation value is determined based on the compensation value, and the compensation value is directly used as the final compensation value.
6. The method for compensating message bandwidth according to claim 4, wherein said determining a final compensation value based on said compensation value comprises the steps of:
taking the compensation value as a service compensation value;
setting a port compensation value for an ingress port;
And taking the superposition value of the port compensation value and the service compensation value as a final compensation value.
7. A message bandwidth compensation apparatus, comprising:
a compensation value acquisition module for:
applying corresponding logic resources in the entering direction according to the tunnel type of the service flow, wherein the logic resources are used for identifying the service type corresponding to the tunnel type;
Setting an ACL (access control list) table entry by taking the logic resource and the outlet slot as KEY values, and matching different compensation values for messages of different service types according to the ACTION of the ACL table entry;
determining a final compensation value according to the compensation value;
The message compensation module is used for:
bringing the final compensation value to an output direction through a message system head and performing bandwidth compensation in the output direction;
The step of setting the ACL table entry by taking the logic resource and the outlet slot as KEY values comprises the following steps: setting ACL list item with the logical resource ID number and the outlet slot number of the service flow to which the message belongs as KEY value and the content of the ACTION as compensation ACTION and corresponding compensation value; the compensation action is used for compensating a preset compensation value on a corresponding outlet when compensating the message according to the KEY value;
The step of bringing the final compensation value to an output direction through a message system head and performing bandwidth compensation in the output direction comprises the following steps: after the message system head brings the final compensation value to the downlink, automatically filling the message length according to the final compensation value to realize message compensation; the message compensation occurs in the TM scheduling stage, and the compensated message is forwarded by ETPP after the TM scheduling is completed.
8. An apparatus, the apparatus comprising: at least one processor; and a memory coupled to the at least one processor, the memory containing instructions stored therein, which when loaded and executed by the processor, implement the method of any of claims 1-6.
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| CN101447912A (en) * | 2007-11-27 | 2009-06-03 | 华为技术有限公司 | Message scheduling method and device thereof |
| CN103888372A (en) * | 2012-12-21 | 2014-06-25 | 中兴通讯股份有限公司 | Traffic shaping method and data processing equipment |
| CN111131159A (en) * | 2019-11-22 | 2020-05-08 | 中国人民解放军国防科技大学 | Message parser and design method thereof |
| CN111510394A (en) * | 2019-01-31 | 2020-08-07 | 华为技术有限公司 | Message scheduling method, related equipment and computer storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8897316B2 (en) * | 2010-12-31 | 2014-11-25 | Telefonaktiebolaget L M Ericsson (Publ) | On-chip packet cut-through |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101447912A (en) * | 2007-11-27 | 2009-06-03 | 华为技术有限公司 | Message scheduling method and device thereof |
| CN103888372A (en) * | 2012-12-21 | 2014-06-25 | 中兴通讯股份有限公司 | Traffic shaping method and data processing equipment |
| CN111510394A (en) * | 2019-01-31 | 2020-08-07 | 华为技术有限公司 | Message scheduling method, related equipment and computer storage medium |
| CN111131159A (en) * | 2019-11-22 | 2020-05-08 | 中国人民解放军国防科技大学 | Message parser and design method thereof |
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