CN107566293A - A kind of method and device for message rate-limiting - Google Patents
A kind of method and device for message rate-limiting Download PDFInfo
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- CN107566293A CN107566293A CN201610512629.3A CN201610512629A CN107566293A CN 107566293 A CN107566293 A CN 107566293A CN 201610512629 A CN201610512629 A CN 201610512629A CN 107566293 A CN107566293 A CN 107566293A
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Abstract
The present invention proposes that a kind of message rate-limiting method and device, methods described include, and the message abandoned more than the first leaky bucket speed limit DISCARD lines is transferred into filtering forwarding bucket；ACL matchings are carried out to the message for being transferred to filtering forwarding bucket according to the ACL matching keywords pre-set, the message that matching is filtrated to get is redirected into forwarding；Secondary arrival token number corresponding to DISCARD lines is determined according to token number corresponding to the message for matching and being filtrated to get, to carrying out speed limit by the message of the first speed limit bucket.The present invention combines ACL, it is avoided that important protocol massages are not dropped while can quickly forwarded again, ensure that link will not interrupt, so as to improve the stability of data forwarding and high efficiency, so as to lift data network service quality, simultaneously to carrying out secondary speed limit by the message of the first speed limit bucket, in the case where bandwidth is constant, ensure speed limit accuracy.
Description
Technical field
The present invention relates to the method and apparatus of field of data networks, more particularly, to message rate-limiting.
Background technology
As grid computing technology develops, current network traffic is varied, can frequently result in network congestion.In order to avoid
Network congestion, improve the service quality (Quality of service, QoS) of data network, the effective means often taken
It is that speed limit is carried out to message in inbound port, if the speed of message is less than defined speed, normally receives message；If message
Speed exceed defined speed, then later message can be simply discarded.
The method generally used at present is to carry out speed limit to message using leaky bucket, and leaky bucket speed limit principle is as shown in figure 1, specific
For：Token is constantly removed from leaky bucket by the rate uniform of speed limit, until leaky bucket is sky.When message arrives, toward in leaky bucket
The long corresponding token number of bag of face addition message；If the token number now in leaky bucket reaches PAUSE lines, can signal
Sender wishes that stopping continues to send, if continuing to send, the token number inside leaky bucket reaches DISCARD lines, then just
Can be by later packet loss.
The method for being carried out speed limit to the message using leaky bucket described above, is not distinguished to all inbound port flows and lost
Abandon, the little but critically important protocol massages of some quantity can be by discarding without differentiation；In order to solve this problem, prior art
In also propose some processing methods, after progress Business Stream shunting mainly advance to message and priority flag are distinguished, then foundation
Leaky bucket principle correspondingly carries out different free spaces according to priority and divided to reach the difference discarding of different brackets message, this
Way causes the forward efficiency of high priority message delay to be present, and link down is caused when serious.
The content of the invention
Embodiments of the invention propose a kind of message rate-limiting method, overcome problems of the prior art with this.
In order to realize foregoing invention purpose, message rate-limiting method proposed by the present invention includes：
The message abandoned more than the first leaky bucket speed limit DISCARD lines is transferred to filtering forwarding bucket；
According to pre-set ACL matching keyword to it is described be transferred to filtering forwarding bucket message carry out ACL matchings, will
Forwarding is redirected with the message being filtrated to get；
Secondary arrival token corresponding to DISCARD lines is determined according to token number corresponding to the message for matching and being filtrated to get
Number, to carrying out speed limit by the message of the first speed limit bucket.
Preferably it is described the message abandoned more than the first leaky bucket speed limit DISCARD lines is transferred to filtering forwarding bucket before, also
Comprise the following steps：
Get the parameter of the first leaky bucket of current processing cycle speed limit configuration；
The parameter includes：Reach leaky bucket token number corresponding to DISCARD lines；
It is determined that token number and the token number of the message forwarding consumption received in current leaky bucket；
Determine to receive according to the token number of token number in the current leaky bucket and the message forwarding consumption received
Token number after the forwarding consumption of message in leaky bucket；
It is determined that the token number after the forwarding consumption for receiving message in leaky bucket is not less than the first leaky bucket speed limit
DISCARD lines.
Preferably：The parameter of the first leaky bucket of current processing cycle speed limit configuration also includes：Reach the leaky bucket of PAUSE lines
Token number, token bucket refresh cycle, token remove speed and the remaining token number of upper a cycle；
Token number is the remaining token number of upper a cycle and token refresh cycle and token in the current leaky bucket
The product for removing speed subtracts each other what is obtained.
Preferably：Token number after the message forwarding consumption received in leaky bucket is not less than the arrival PAUSE
During the leaky bucket token number of line, start ACL and be pre-configured with, obtain secondary leaky bucket speed limit configuration parameter；
The secondary leaky bucket speed limit configuration parameter includes：Reach leaky bucket token number corresponding to DISCARD lines, upper a cycle
There is the token number remained in；
Arrival leaky bucket token number corresponding to DISCARD lines is to reach DISCARD lines according to the first leaky bucket speed limit to correspond to
Leaky bucket token number subtract each other what is obtained with the corresponding token number of the message that is filtrated to get that matches.
Preferably：The described pair of message by the first leaky bucket speed limit carries out speed limit, is in the message pair being filtrated to get
When the token number answered is not less than 0, to carrying out speed limit by the message of the first leaky bucket speed limit.
Preferably：There is remaining order to secondary arrival token number corresponding to DISCARD lines and the upper a cycle
Board number is summed, if summation is not less than 0, to carrying out speed limit by the message of the first leaky bucket speed limit；Otherwise, if less than 0, report
Literary normal forwarding.
Preferably：It is determined that the token number after the forwarding consumption for receiving message in leaky bucket limits less than first leaky bucket
Fast DISCARD lines, then message normally forward.
Preferably：The acl rule that the basis is pre-set carries out ACL to the message for being transferred to filtering forwarding bucket
Match somebody with somebody, directly abandoned not over the message of matching filtering.
The message rate-limiting device that the present invention also proposes, including：
Forwarding module, for the message abandoned more than the first leaky bucket speed limit DISCARD lines to be transferred into filtering forwarding bucket；
Filtering module, for carrying out ACL to the message for being transferred to filtering forwarding bucket according to the acl rule pre-set
Match somebody with somebody, the message that matching is filtrated to get is redirected into forwarding；
Speed limit module, for according to it is described match the message that is filtrated to get corresponding to token number determine secondary arrival
Token number corresponding to DISCARD lines, to carrying out speed limit by the message of the first speed limit bucket.
In embodiments of the invention, by setting acl rule, matching is filtered out in the message abandoned by the first leaky bucket speed limit
Important message, by it is described it is important redirect forwarding, and the token number according to corresponding to the message that matching is filtrated to get, it is determined that
Secondary leaky bucket speed limit DISCARD lines by the message of the first leaky bucket speed limit to carrying out speed limit.With reference to ACL, important association is avoided that
View message is not dropped while can quickly forwarded again, it is ensured that link will not interrupt, so as to improve the steady of data forwarding
Qualitative and high efficiency, so as to lift data network service quality, while to carrying out secondary speed limit by the message of the first speed limit bucket,
In the case where bandwidth is constant, ensure speed limit accuracy.
Brief description of the drawings
Fig. 1 is leaky bucket speed limit general principle figure；
Fig. 2 is the flow chart of the first embodiment of the present invention；
Fig. 3 is the schematic diagram of second embodiment of the invention.
Embodiment
It is right below in conjunction with the accompanying drawings and the specific embodiments to make the object, technical solutions and advantages of the present invention clearer
The present invention is described in detail.
Message rate-limiting method proposed by the present invention includes：
The message abandoned more than the first leaky bucket speed limit DISCARD lines is transferred to filtering forwarding bucket；
According to pre-set ACL matching keyword to it is described be transferred to filtering forwarding bucket message carry out ACL matchings, will
Forwarding is redirected with the message being filtrated to get；
Secondary arrival token corresponding to DISCARD lines is determined according to token number corresponding to the message for matching and being filtrated to get
Number, to carrying out speed limit by the message of the first speed limit bucket.
Preferably it is described the message abandoned more than the first leaky bucket speed limit DISCARD lines is transferred to filtering forwarding bucket before, also
Comprise the following steps：
Get the parameter of the first leaky bucket of current processing cycle speed limit configuration；
The parameter includes：Reach leaky bucket token number corresponding to DISCARD lines；
It is determined that token number and the token number of the message forwarding consumption received in current leaky bucket；
Determine to receive according to the token number of token number in the current leaky bucket and the message forwarding consumption received
Token number after the forwarding consumption of message in leaky bucket；
It is determined that the token number after the forwarding consumption for receiving message in leaky bucket is not less than the first leaky bucket speed limit
DISCARD lines.
Preferably：The parameter of the first leaky bucket of current processing cycle speed limit configuration also includes：Reach the leaky bucket of PAUSE lines
Token number, token bucket refresh cycle, token remove speed and the remaining token number of upper a cycle；
Token number is the remaining token number of upper a cycle and token refresh cycle and token in the current leaky bucket
The product for removing speed subtracts each other what is obtained.
Preferably：Token number after the message forwarding consumption received in leaky bucket is not less than the arrival PAUSE
During the leaky bucket token number of line, start ACL and be pre-configured with, obtain secondary leaky bucket speed limit configuration parameter；
The secondary leaky bucket speed limit configuration parameter includes：Reach leaky bucket token number corresponding to DISCARD lines, upper a cycle
There is the token number remained in；
Arrival leaky bucket token number corresponding to DISCARD lines is to reach DISCARD lines according to the first leaky bucket speed limit to correspond to
Leaky bucket token number subtract each other what is obtained with the corresponding token number of the message that is filtrated to get that matches.
Preferably：The described pair of message by the first leaky bucket speed limit carries out speed limit, is in the message pair being filtrated to get
When the token number answered is not less than 0, to carrying out speed limit by the message of the first leaky bucket speed limit.
Preferably：There is remaining order to secondary arrival token number corresponding to DISCARD lines and the upper a cycle
Board number is summed, if summation is not less than 0, to carrying out speed limit by the message of the first leaky bucket speed limit；Otherwise, if less than 0, report
Literary normal forwarding.
Preferably：It is determined that the token number after the forwarding consumption for receiving message in leaky bucket limits less than first leaky bucket
Fast DISCARD lines, then message normally forward.
Preferably：The acl rule that the basis is pre-set carries out ACL to the message for being transferred to filtering forwarding bucket
Match somebody with somebody, directly abandoned not over the message of matching filtering.
The message rate-limiting device that the present invention also proposes, including：
Forwarding module, for the message abandoned more than the first leaky bucket speed limit DISCARD lines to be transferred into filtering forwarding bucket；
Filtering module, for carrying out ACL to the message for being transferred to filtering forwarding bucket according to the acl rule pre-set
Match somebody with somebody, the message that matching is filtrated to get is redirected into forwarding；
Speed limit module, for according to it is described match the message that is filtrated to get corresponding to token number determine secondary arrival
Token number corresponding to DISCARD lines, to carrying out speed limit by the message of the first speed limit bucket.
The present invention is directed to the problem of existing, there is provided a kind of message rate-limiting method and device.
First embodiment
Referring to described in Fig. 2, the first embodiment of the present invention proposes a kind of message rate-limiting method, including：
Step 201：The parameter of current leaky bucket speed limit configuration is got, reaches the leaky bucket token number P of PAUSE linesn, reach
Leaky bucket token number D corresponding to DISCARD linesn, token bucket refresh cycle T, token removes speed V, the upper remaining order of a cycle
Board number Ps1。
Step 202：Obtain that leaky bucket token number P can be used in the process cycle bucketa。
The token number that obtaining this cycle can produce is (T*V), has remaining token number P in a cycle leaky bucket in acquirements,
Token sum P in current bucketa=Ps-(T*V).In each process cycle, leaky bucket token number can now be used by being required for obtaining.
Step 203：Message is received, calculates the token number P that the message reached in this cycle can addc, that is, corresponding report
Text needs to be added to the token number inside leaky bucket
The token number is to be grown to determine according to the bag of message.
Step 204：Token number P in current bucket after calculating message forwarding consumptione
The token number Pe=Pa+PcThat is, need to be added to leakage plus this arrival message with current leaky bucket available tokens number
The token number of bucket the inside
Step 205：PeWith PAUSE lines PnCompare, if Pe>=Pn, step 206 is transferred to, if so, Pe<PnThen it is transferred to step
21216。
If currently available token number has reached PAUSE lines, start the configuration of filtering forwarding bucket and secondary filter speed limit bucket.
Step 206：Carry out ACL initial configurations；
The ACL initial configurations, according to system requirements, the important message filtered as needed determines that ACL matching is closed
Key word, the keyword can be protocol number, sub-protocol number, MAC, source port, destination interface or lead code etc. it is a kind of or
Several combinations；
For example for being carried on the message of TCP, udp protocol, such as BGP, RIP protocol massages, matching keyword is agreement
Type and/or port numbers；
Protocol massages for being carried on IP messages, such as the protocol massages such as OSPF, PIM, the matching keyword is
With protocol number, MAC, multicast message and/or destination address；
For two-layer protocol, for example, the protocol massages such as LACP, BPDU, LLDP, the matching keyword is Ethernet class
Type.
Step 207：Carry out secondary speed limit bucket configuration；
The secondary speed limit configuration includes：The configuration of current secondary speed limit bucket speed limit is obtained, that is, is reached corresponding to DISCARD lines
Leaky bucket token number is adjusted to Dn-Pp, token bucket refresh cycle T, and upper a cycle has the token P remained ins2
Step 208：PeWith DISCARD lines DnCompare, if Pe>=Dn, step 209 is transferred to, if so, Pe<DnThen it is transferred to step
Rapid 216.
Step 209：Pe>=Dn, that is, exceeded DISCARD lines, then current leaky bucket speed limit starts to overflow packet loss, the report of spilling
Text is abandoned, and bucket is forwarded into filtering.
Step 210：The message for filtering forwarding bucket to entering according to the ACL matching keywords being pre-configured with matches；Institute
Matching to be stated to refer to, the keyword that will go into the message of filtering forwarding bucket is matched with the message keyword that ACL table item configures,
If the match is successful, step 212 is transferred to, if matching is unsuccessful, is transferred to step 211, step 211：Message normally abandons.
Step 212：Obtained filtering packets are the important messages being dropped, and record token corresponding to now filtering packets
Number Pp。
Step 213：The message is redirected, fast-forwarding to CPU mouths or the exit port specified, prior to other
Message completes the processing of message.
Step 214：The protocol massages being filled into and the message of the first leaky bucket speed limit are subjected to speed limit；
Step 215：According to the configuration parameter for getting the first leaky bucket speed limit：Leaky bucket token number Pn when reaching PAUSE lines, is arrived
Up to leaky bucket token number Dn during DISCARD lines, it is Dn-Pp to readjust DISCARD lines, while gets current remaining token number
Ps2, if Dn-Pp+Ps2>=0, the message after will being matched by ACL take into account after to the message by the first speed limit bucket again
Make speed limit, in the case of speed-limiting bandwidth is unalterable, while to carrying out secondary speed limit by the message of the first speed limit bucket, in band
In the case that width is constant, ensure speed limit accuracy；If it find that the quantity of the message after being matched by ACL takes completely
The bandwidth of speed limit, i.e. Dn-Pp+Ps2<0, then the segment message to come after first time speed limit can be dropped；Proceed to step
216。
Step 216：Message enters forward process flow, is handled, end cycle.
Second embodiment
Referring to described in Fig. 3, the second embodiment of the present invention proposes a kind of message rate-limiting device, and described device includes：
Forwarding module, for the message abandoned more than the first leaky bucket speed limit DISCARD lines to be transferred into filtering forwarding bucket；
Filtering module, for carrying out ACL to the message for being transferred to filtering forwarding bucket according to the acl rule pre-set
Match somebody with somebody, the message that matching is filtrated to get is redirected into forwarding；
Speed limit module, for according to it is described match the message that is filtrated to get corresponding to token number determine secondary arrival
Token number corresponding to DISCARD lines, to carrying out speed limit by the message of the first speed limit bucket.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general
Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and formed
Network on, alternatively, they can be realized with the program code that computing device can perform, it is thus possible to they are stored
Performed in the storage device by computing device, and in some cases, can be with different from shown in order execution herein
The step of going out or describing, they are either fabricated to each integrated circuit modules respectively or by multiple modules in them or
Step is fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware and software combination.
Claims (9)
- A kind of 1. message rate-limiting method, it is characterised in that：The message abandoned more than the first leaky bucket speed limit DISCARD lines is transferred to filtering forwarding bucket；ACL matchings are carried out to the message for being transferred to filtering forwarding bucket according to the ACL matching keywords pre-set, will be matched Filter obtained message and redirect forwarding；Secondary arrival token number corresponding to DISCARD lines is determined according to token number corresponding to the message for matching and being filtrated to get, To carrying out speed limit by the message of the first speed limit bucket.
- 2. method as claimed in claim 1, it is characterised in that：It is described the message abandoned more than the first leaky bucket speed limit DISCARD lines is transferred to filtering forwarding bucket before, include walking as follows Suddenly：Get the parameter of the first leaky bucket of current processing cycle speed limit configuration；The parameter includes：Reach leaky bucket token number corresponding to DISCARD lines；It is determined that token number and the token number of the message forwarding consumption received in current leaky bucket；Determine to receive message according to the token number of token number in the current leaky bucket and the message forwarding consumption received Forwarding consumption after token number in leaky bucket；It is determined that the token number after the forwarding consumption for receiving message in leaky bucket is not less than the first leaky bucket speed limit DISCARD Line.
- 3. method as claimed in claim 2, it is characterised in that：The parameter of the first leaky bucket of current processing cycle speed limit configuration also includes：Reach leaky bucket token number, the token of PAUSE lines Bucket refresh cycle, token remove speed and the remaining token number of upper a cycle；Token number is that the remaining token number of upper a cycle removes with token refresh cycle and token in the current leaky bucket The product of speed subtracts each other what is obtained.
- 4. method as claimed in claim 3, it is characterised in that：Token number after the message forwarding consumption received in leaky bucket is not less than the leaky bucket token of the arrival PAUSE lines During number, start ACL and be pre-configured with, obtain secondary leaky bucket speed limit configuration parameter；The secondary leaky bucket speed limit configuration parameter includes：Leaky bucket token number corresponding to DISCARD lines is reached, upper a cycle has surplus It is remaining token number；Arrival leaky bucket token number corresponding to DISCARD lines is the leakage according to corresponding to the first leaky bucket speed limit reaches DISCARD lines Bucket token number token number corresponding with the message that the matching is filtrated to get subtracts each other what is obtained.
- 5. method as claimed in claim 4, it is characterised in that the described pair of message by the first leaky bucket speed limit carries out speed limit, It is when token number corresponding to the message being filtrated to get is not less than 0, to carrying out speed limit by the message of the first leaky bucket speed limit.
- 6. method as claimed in claim 5, it is characterised in that：There is remaining token number to ask with the upper a cycle secondary arrival token number corresponding to DISCARD lines With if summation is not less than 0, to carrying out speed limit by the message of the first leaky bucket speed limit；Otherwise, if less than 0, message normally turns Hair.
- 7. method as claimed in claim 2, it is characterised in that：It is determined that the token number after the forwarding consumption for receiving message in leaky bucket is less than the first leaky bucket speed limit DISCARD Line, then message normally forward.
- 8. the method as described in claim 1-7, it is characterised in that：The acl rule that the basis is pre-set to it is described be transferred to filtering forwarding bucket message carry out ACL matchings, not over Message with filtering directly abandons.
- A kind of 9. message rate-limiting device, it is characterised in that including：Forwarding module, for the message abandoned more than the first leaky bucket speed limit DISCARD lines to be transferred into filtering forwarding bucket；Filtering module, for carrying out ACL matchings to the message for being transferred to filtering forwarding bucket according to the acl rule pre-set, The message that matching is filtrated to get is redirected into forwarding；Speed limit module, for according to it is described match the message that is filtrated to get corresponding to token number determine secondary arrival DISCARD lines Corresponding token number, to carrying out speed limit by the message of the first speed limit bucket.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610512629.3A CN107566293B (en) | 2016-06-30 | 2016-06-30 | Method and device for limiting message speed |
| PCT/CN2017/091289 WO2018001373A1 (en) | 2016-06-30 | 2017-06-30 | Method and device for limiting transmission speed of messages |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610512629.3A CN107566293B (en) | 2016-06-30 | 2016-06-30 | Method and device for limiting message speed |
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Also Published As
| Publication number | Publication date |
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| CN107566293B (en) | 2022-03-25 |
| WO2018001373A1 (en) | 2018-01-04 |
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