CN108400939A - The system and method for accelerating multicast replication is realized in NFV - Google Patents
The system and method for accelerating multicast replication is realized in NFV Download PDFInfo
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- CN108400939A CN108400939A CN201810173813.9A CN201810173813A CN108400939A CN 108400939 A CN108400939 A CN 108400939A CN 201810173813 A CN201810173813 A CN 201810173813A CN 108400939 A CN108400939 A CN 108400939A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/16—Multipoint routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/54—Organization of routing tables
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/74—Address processing for routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/20—Support for services
- H04L49/201—Multicast operation; Broadcast operation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/25—Routing or path finding in a switch fabric
- H04L49/252—Store and forward routing
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
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Abstract
A kind of system and method the present invention relates to acceleration multicast replication is realized in NFV, including hardware device, Forwarding plane and control plane, and hardware device is for receiving, duplicated multicast message, and the forwarding of multicast message is carried out according to multicast forward table；Forwarding plane is handed down to hardware device for generating multicast forward table, and uploads multicast message to control plane；Control plane is used to generate user multicast table according to multicast message, and user multicast table is handed down to Forwarding plane.The system and method for accelerating multicast replication are realized in NFV using the present invention, for scenes such as newest SDN, NFV, user multicast message under soft forwarding situation is solved the problem of, by coordinating with hardware device, the multicast message that software replicates will be needed, which to sink to hardware device, transfers to hardware device to replicate, forwarding performance can greatly be improved, and avoids having an impact unicast message, promotes the efficiency of multicast, cpu resource is discharged, promotes the efficiency of other business indirectly.
Description
Technical field
The present invention relates to the duplications of network communication technology field more particularly to multicast message to forward field, in particular to one
The system and method for accelerating multicast replication is realized in kind NFV.
Background technology
NFV (network function virtualization) is by using the general purpose hardwares such as X86 equipment and virtualization technology, to carry
Very the processing of multi-functional software, equipment cost to reduce network costliness method, NFV can by soft hardware equipment decoupling and
Function modeling makes network equipment function be no longer dependent on special hardware, and resource fully can flexibly be shared, and realizes new business
Quick exploitation and deployment, and automatic deployment, elastic telescopic, Fault Isolation and self-healing etc. are carried out based on practical business demand.
And above-mentioned network function can be the pattern of On-demand, need not additionally install any new equipment, operator can
The firewall functionality based on software increased income is executed to run virtual machine on X86 platforms, and is increased without any new hard
Part installations and facilities, likewise, the functions such as CDN, NAT, DPI, VPN, IPTV, router, P-GW, IMS, can pass through base
It is realized in the software of NFV.
There are two types of modes for traditional IP communications：(1) unicast：The point-to-point communication between source host and destination host；(2)
Broadcast：In source host and the same network segment between all other host point-to-multipoint communication.If sent information to more
A host rather than All hosts not only can waste band according to broadcast mode due to sending information to unwanted host
Width also cannot achieve cross-network segment transmission；According to mode of unicast, the IP packets repeated can not only occupy massive band width, can also increase
The load of source host.So traditional unicast and broadcast communication mode cannot efficiently solve, single-point is sent, multipoint reception is asked
Topic.
Multicast refers to that data packet is sent to the node set of some determination (i.e. in the form of transmitting as possible in an ip network
Multicast group), basic thought is：Source host (i.e. multicast source) only sends a data, and destination address is multicast group address；Group
Same data copy can all be received by broadcasting all recipients in group, and the host only in multicast group can receive the number
According to, and other hosts cannot then receive.
Referring to Fig. 1, common router realize multicast functionality when, only need to by message replicate be distributed to required connect
Mouthful, the number of duplication at most subtracts one equal (i.e. to all mouthfuls of multicasts) with number of ports.When NFV is used in incoming end as VBRAS
When, the demander of flux of multicast then becomes user, and the number of user can be particularly more, can reach 64k even under extreme case
128k, if still using the mode of software forward at this time, not only performance can be far from enough, and it is also possible to unicast message
Forwarding generates deleterious effect.
Invention content
The shortcomings that above-mentioned prior art being overcome the object of the present invention is to provide one kind, it would be desirable to which the group that software replicates is reported
Text sinks in hardware device, the NFV for transferring to hardware device to replicate and realizes the system and method for accelerating multicast replication.
To achieve the goals above, being realized in NFV of the invention accelerates the system and method for multicast replication as follows：
In this kind of NFV realize accelerate multicast replication system, be mainly characterized by, including hardware device, Forwarding plane and
Control plane, three are sequentially connected, wherein
The hardware device for receive, duplicated multicast message, and according to multicast forward table carry out multicast message turn
Hair；
The Forwarding plane is handed down to the hardware device for generating multicast forward table, and hardware is set
It is sent to control plane on the standby multicast message received；
The control plane is used to generate three layers of multicast table and user multicast table according to multicast message, and by described three
Layer multicast table is handed down to the Forwarding plane with user multicast table.
Preferably, the Forwarding plane after inquiring itself with three layers of multicast table according to three layers of multicast table
The multicast forward table is generated with user multicast table.
Preferably, the control plane generates user multicast table according to the content of the IGMP of the multicast message.
Preferably, the hardware device includes P4 interchangers.
This realizes the method for accelerating multicast replication in NFV based on above system, is mainly characterized by, the method includes
Following steps：
(1) after hardware device receives multicast message, multicast forward table is checked whether there is, if so, then according to existing multicast
Forwarding table carries out duplication forwarding；If nothing, continue step (2)；
(2) hardware device will give the Forwarding plane on received multicast message, described to be looked into Forwarding plane
Whether inquiry has three layers of multicast table, if so, then continuing step (4)；If nothing, continue step (3)；
(3) Forwarding plane described in will give the control plane on the multicast message, the control plane according to
Received multicast message generates three layers of multicast table and user multicast table, and by three layers of multicast table and user multicast table
It is handed down to the Forwarding plane, and continues step (4)；
(4) Forwarding plane described in generates multicast forward table and is handed down to hardware device, and the hardware device is according to multicast
Forwarding table carries out duplication forwarding.
It is handed down to hardware device preferably, Forwarding plane in the step (4) generates multicast forward table and is specially：
The Forwarding plane after detecting that itself has three layers of multicast table, according to received user multicast table with
Three layers of multicast table generate multicast forward table and are handed down to hardware device.
Preferably, the control plane generates user multicast according to the content of the IGMP of received multicast message
Table.
The system and method for accelerating multicast replication are realized in NFV using the present invention, for fields such as newest SDN, NFV
Scape solves the problem of user multicast message under soft forwarding situation, by coordinating with hardware device, it would be desirable to the group that software replicates
It reports text and sinks to hardware device, transfer to hardware device to replicate, can not only greatly improve forwarding performance, and avoid to list
It reports text to have an impact, improves the efficiency of multicast and release cpu resource, indirectly improve the efficiency of other business.
Description of the drawings
Fig. 1 is multicast replication schematic diagram when using multicast functionality in the prior art.
Fig. 2 accelerates the multicast replication schematic diagram of the system of multicast replication for realization in the NFV of the present invention.
Specific implementation mode
In order to more clearly describe the technology contents of the present invention, carried out with reference to specific embodiment further
Description.
The system for accelerating multicast replication is realized in this kind of NFV, wherein including hardware device, Forwarding plane and control plane,
Three is sequentially connected, wherein the hardware device for receiving, duplicated multicast message, and group is carried out according to multicast forward table
Report the forwarding of text；The Forwarding plane is handed down to the hardware device for generating multicast forward table, and will be hard
It is sent to control plane on the multicast message that part equipment receives；The control plane is used to generate user group according to multicast message
Table and three layers of multicast table are broadcast, and the user multicast table is handed down to the Forwarding plane.
In a kind of more preferably embodiment, the Forwarding plane is after inquiring itself with three layers of multicast table according to institute
The user multicast table stated and three layers of group table generate the multicast forward table.
In a kind of preferred embodiment, the control plane generates user according to the content of the IGMP in multicast message
Multicast table.
In a kind of preferred embodiment, the hardware device includes P4 interchangers.
The method for accelerating multicast replication in NFV is realized based on above system, including following steps：
(1) after hardware device receives multicast message, multicast forward table is checked whether there is, if so, then according to existing multicast
Forwarding table carries out duplication forwarding；If nothing, continue step (2)；
(2) hardware device will give the Forwarding plane on received multicast message, described to be looked into Forwarding plane
Whether inquiry has three layers of multicast table, if so, then continuing step (4)；If nothing, continue step (3)；
(3) Forwarding plane described in will give the control plane on the multicast message, the control plane according to
Received multicast message generates three layers of multicast table and user multicast table, and the user multicast table and three layers of multicast table are issued
To the Forwarding plane, continue step (4)；
(4) Forwarding plane described in generates multicast forward table and is handed down to hardware device, and is then carried out according to multicast forward table
Replicate forwarding.
In a kind of preferred embodiment, the Forwarding plane in the step (4) generates multicast forward table and is handed down to firmly
Part equipment is specially：
The Forwarding plane after detecting that itself has three layers of multicast table, according to received user multicast table with
Three layers of multicast table generate multicast forward table and are handed down to hardware device.
In a kind of preferred embodiment, the control plane is according to the content of the IGMP of received multicast message
Generate user multicast table.
Referring to Fig. 2, the forwarding of multicast is carried out by newly-increased hardware device, and since the flexibility ratio of hardware device is asked
Topic, it is also necessary to there is equipment to send fixed configuration to it, in a particular embodiment, which can be a Forwarding plane.
When hardware device receives multicast message for the first time, due to there is no any list item in hardware device, the hardware device
Forwarding plane will be given on received multicast message, then by giving control plane on Forwarding plane, by control plane according to
The state of Multicast Routing generates one or more list item (user multicast table), is handed down to Forwarding plane, Forwarding plane is according to itself
State and hardware device type, generate a series of control command (multicast forward table), hardware device be handed down to by channel.
In this way, when hardware device is received again by multicast message, just there is configuration, the hardware device for receiving multicast message is matched according to this
It sets, multicast message is replicated, the first-class very time consuming operation of encapsulated message, finally forward the message to required use
Family greatly improves the efficiency of multicast and releases cpu resource, indirectly improves the efficiency of other business.
In a particular embodiment, the hardware device in using P4 interchangers as the system, is realized within the system in NFV
The middle method for accelerating multicast replication includes the following steps：
(1) user, which sends, adds group message, specified to need destination address for the multicast message of 225.1.1.1.
(2) after P4 interchangers receive message, be the discovery that IGMP (Internet group management protocol,
Internet Group Management Protocol) Forwarding plane will be given thereon after message.
(3) Forwarding plane described in is by the message up sending to control plane.
(4) control plane generates user multicast table, and be handed down to Forwarding plane according to the content of the IGMP of message.
(5) Forwarding plane stores user multicast table, and inquires three layers of multicast table, finds, without three layers of multicast table, to stop dynamic
Make.
(6) multicast source sends the multicast message of 225.1.1.1, reaches P4 interchangers.
(7) P4 interchangers are tabled look-up, and are found no list item, are above sent multicast message.
(8) Forwarding plane is tabled look-up, and finds, without three layers of multicast table, above to send multicast message.
(9) control plane receives multicast message, according to agreement and state machine, generates three layers of multicast table, it is flat to be handed down to forwarding
Face.
(10) Forwarding plane stores three layers of multicast table, and inquires user multicast table, finds match information, generates multicast forwarding
Table, and the related configurations of P4 are generated, it is handed down to P4.
(11) it after P4 is received again by the multicast message of 225.1.1.1, tables look-up, discovery has list item (multicast forward table), carries out
It replicates, issues required user.
List item used in multicast procedures has 3, respectively three layers of multicast table, user multicast table and multicast forward table.
Wherein multicast forward table is generated by logic with " user multicast table " by " three layers of multicast table ".It is only existing " user multicast table "
When, do not meet the logic of generation " multicast forward table ", so Forwarding plane will not issue " multicast forwarding to hardware device
Table ", when only " three layers of multicast table " being waited for generate, forwarding platform can just judge whether to generate " multicast forward table " again.
In a particular embodiment, the multicast forward table that the Forwarding plane issues will also be converted to the multicast that hardware device can identify
Forwarding table must be a kind of order that can be identified according to hardware device type set, hardware device.
The system and method for accelerating multicast replication are realized in NFV using the present invention, for fields such as newest SDN, NFV
Scape solves the problem of user multicast message under soft forwarding situation, by coordinating with hardware device, it would be desirable to the group that software replicates
It reports text and sinks to hardware device, transfer to hardware device to replicate, can not only greatly improve forwarding performance, and avoid to list
It reports text to have an impact, improves the efficiency of multicast and release cpu resource, indirectly improve the efficiency of other business.
In this description, the present invention is described with reference to its specific embodiment.But it is clear that can still make
Various modifications and alterations are without departing from the spirit and scope of the invention.Therefore, the description and the appended drawings should be considered as illustrative
And not restrictive.
Claims (7)
1. realizing the system for accelerating multicast replication in a kind of NFV, which is characterized in that including hardware device, Forwarding plane and control
Plane, three are sequentially connected, wherein
The hardware device for receive, duplicated multicast message, and according to multicast forward table carry out multicast message forwarding；
The Forwarding plane is handed down to the hardware device for generating multicast forward table, and hardware device is connect
It is sent to control plane on the multicast message received；
The control plane is used to generate three layers of multicast table and user multicast table according to multicast message, and by three layers of group
It broadcasts table and is handed down to the Forwarding plane with user multicast table.
2. realizing the system for accelerating multicast replication in NFV according to claim 1, which is characterized in that the forwarding is flat
Face generates the multicast after inquiring itself with three layers of multicast table according to three layers of multicast table and user multicast table
Forwarding table.
3. realizing the system for accelerating multicast replication in NFV according to claim 1, which is characterized in that the control is flat
Face generates user multicast table according to the content of the IGMP of the multicast message.
4. realizing the system for accelerating multicast replication in NFV according to claim 1, which is characterized in that the hardware is set
Standby includes P4 interchangers.
5. a kind of realizing the method for accelerating multicast replication in NFV, spy based on system any one of Claims 1-4
Sign is that the method includes the following steps：
(1) after hardware device receives multicast message, multicast forward table is checked whether there is, if so, then according to existing multicast forwarding
Table carries out duplication forwarding；If nothing, continue step (2)；
(2) hardware device will give the Forwarding plane on received multicast message, described to be in Forwarding plane inquiry
It is no to have three layers of multicast table, if so, then continuing step (4)；If nothing, continue step (3)；
(3) Forwarding plane described in will give the control plane on the multicast message, the control plane connects according to it
The multicast message received generates three layers of multicast table and user multicast table, and three layers of multicast table are issued with user multicast table
To the Forwarding plane, and continue step (4)；
(4) Forwarding plane described in generates multicast forward table and is handed down to hardware device, and the hardware device is according to multicast forwarding
Table carries out duplication forwarding.
6. according to claim 5 realize the method for accelerating multicast replication in NFV, which is characterized in that the step (4)
In Forwarding plane generate multicast forward table and be handed down to hardware device and be specially：
The Forwarding plane is after detecting that itself has three layers of multicast table, according to received user multicast table and three layers
Multicast table generates multicast forward table and is handed down to hardware device.
7. according to claim 5 realize the method for accelerating multicast replication in NFV, which is characterized in that the control is flat
Face generates user multicast table according to the content of the IGMP of received multicast message.
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Cited By (2)
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| CN110838980A (en) * | 2019-11-22 | 2020-02-25 | 苏州浪潮智能科技有限公司 | Message matching system and method based on NFV |
| WO2023124480A1 (en) * | 2021-12-29 | 2023-07-06 | 中国电信股份有限公司 | Route advertisement method and apparatus, device, and storage medium |
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