CN106254245A - A kind of method and device managing list item - Google Patents
A kind of method and device managing list item Download PDFInfo
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- CN106254245A CN106254245A CN201610621533.0A CN201610621533A CN106254245A CN 106254245 A CN106254245 A CN 106254245A CN 201610621533 A CN201610621533 A CN 201610621533A CN 106254245 A CN106254245 A CN 106254245A
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- Prior art keywords
- list item
- moment
- interface
- invalid
- mac address
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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
-
- 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
- H04L45/742—Route cache; Operation thereof
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Small-Scale Networks (AREA)
Abstract
The application provides a kind of method and device managing list item, is applied to switch device, and described switch device maintains the mac address forwarding table comprising some list items；The method may include that and determines invalid list item corresponding to interface that down event occurs；The aging mechanism utilizing mac address forwarding table deletes described invalid list item.By the technical scheme of the application, when there is down event in interface, invalid list item is deleted by the aging mechanism of mac address forwarding table, rather than all list items traveling through mac address forwarding table immediately find out and delete invalid list item, save the process resource of switch device, thus improve the process performance of switch device.Simultaneously, utilize the aging mechanism of mac address forwarding table to delete invalid list item, it is not necessary to list item is locked, avoiding problems when lock times exceedes the time that WatchDog Timer sets, cause the problem that switch device is restarted, improve the security performance of switch device.
Description
Technical field
The application relates to network communication technology field, particularly relates to a kind of method and device managing list item.
Background technology
In real network environment, often there are single lan comprises the situation of great amount of terminals equipment, these terminals
Equipment may be by the same interface on a certain switch device in network topology, communication with the outside world, at this moment this switch
The mac address forwarding table of equipment will exist the list item in a large number about this interface.
When interface occurs down event, switch device deletes the list item that this interface is corresponding immediately, then by again learning
Practise and create list item.
When switch device deletes the relevant entries of specified interface, due in the prior art, mac address forwarding table is adopted more
With Hash table, add VLANID as Hash key using MAC Address, will be by mac address forwarding table when interface deletes list item so pressing
All list items all travel through, and the spent time is long, and this just occupies the process resource that switch is the biggest, greatly reduces exchange
The process performance of machine equipment.Simultaneously as need when deleting list item mac address forwarding table is locked (to prevent other processes from revising
List item), when switch device deletes list item, long owing to deleting the time of list item consuming, once lock times exceedes house dog calmly
Time device set time, may result in switch device and restart.
Summary of the invention
In view of this, the application provides a kind of method and device managing list item, can solve when interface occurs down thing
During part, owing to switch device deletes the overlong time of list item, cause the process performance reducing switch device, even result in
The problem that switch device is restarted.
For achieving the above object, the application provides technical scheme as follows:
First aspect according to the application, it is proposed that a kind of method managing list item, including:
Determine the invalid list item that the interface of generation down event is corresponding；
The aging mechanism utilizing mac address forwarding table deletes described invalid list item.
Second aspect according to the application, it is proposed that a kind of device managing list item, including:
Determine unit, determine the invalid list item that the interface of generation down event is corresponding；
Delete unit, utilize the aging mechanism of mac address forwarding table to delete described invalid list item.
From above technical scheme, when interface occurs down event, e.g. changed by network topology and lead
Causing, the application deletes invalid list item by the aging mechanism of mac address forwarding table rather than travels through MAC Address immediately
Invalid list item is found out and deleted to all list items of forward table, saves the process resource of switch device, thus improves
The process performance of switch device.Meanwhile, utilize the aging mechanism of mac address forwarding table to delete invalid list item, it is not necessary to
List item is locked (preventing other processes from revising list item), avoiding problems when lock times exceedes WatchDog Timer setting
Between, cause the problem that switch device is restarted, improve the security performance of switch device.
Accompanying drawing explanation
Fig. 1 is the flow chart of a kind of method managing list item that the application one exemplary embodiment provides.
Fig. 2 is the flow chart of the method for the another kind of management list item that the application one exemplary embodiment provides.
Fig. 3 be the application one exemplary embodiment provide judge that list item is whether as invalid flow chart.
Fig. 4 is the structural representation of a kind of electronic equipment that the application one exemplary embodiment provides.
Fig. 5 is the block diagram of a kind of device managing list item that the application one exemplary embodiment provides.
Detailed description of the invention
Here will illustrate exemplary embodiment in detail, its example represents in the accompanying drawings.Explained below relates to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represents same or analogous key element.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they are only with the most appended
The example of the apparatus and method that some aspects that described in detail in claims, the application are consistent.
It is only merely for describing the purpose of specific embodiment at term used in this application, and is not intended to be limiting the application.
" a kind of ", " described " and " being somebody's turn to do " of singulative used in the application and appended claims is also intended to include majority
Form, unless context clearly shows that other implications.It is also understood that term "and/or" used herein refers to and wraps
Any or all containing one or more projects of listing being associated may combination.
Although should be appreciated that in the application possible employing term first, second, third, etc. to describe various information, but this
A little information should not necessarily be limited by these terms.These terms are only used for same type of information is distinguished from each other out.Such as, without departing from
In the case of the application scope, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as
One information.Depend on linguistic context, word as used in this " if " can be construed to " ... time " or " when ...
Time " or " in response to determining ".
Fig. 1 is the flow chart of a kind of method managing list item shown in the application one exemplary embodiment, as it is shown in figure 1,
The method is applied to switch device, and described switch device maintains the mac address forwarding table comprising some list items, can wrap
Include following steps:
Step 101, determines the invalid list item that the interface of generation down event is corresponding.
In the present embodiment, the generation creating moment and the down event of described list item corresponding interface of list item can be compared
The sequencing in moment, and when described occur time be engraved in described establishment the moment after time, it is determined that the table that the described establishment moment is corresponding
Item is invalid.
Wherein, the establishment moment of list item is compared suitable with the priority in the generation moment of the down event of described list item corresponding interface
Sequence, can scan the list item of predetermined number in mac address forwarding table successively according to predetermined period, to obtain scanned list item pair
The establishment moment answered；According to the interface that described scanned list item is corresponding, by the establishment moment corresponding for described scanned list item
The generation moment of the down event corresponding with the corresponding interface compares.
When being engraved in before the described establishment moment when described generation, it is determined that list item corresponding to described establishment moment is effective, protects
Stay described list item.
Step 102, utilizes the aging mechanism of mac address forwarding table to delete described invalid list item.
In the present embodiment, when receiving message, if the existing list item corresponding to described message is invalid list item, pass through
Learning style creates another list item being different from described existing list item.
From above technical scheme, when interface occurs down event, e.g. changed by network topology and lead
Causing, the application deletes invalid list item by the aging mechanism of mac address forwarding table rather than travels through MAC Address immediately
Invalid list item is found out and deleted to all list items of forward table, saves the process resource of switch device, thus improves
The process performance of switch device.Meanwhile, utilize the aging mechanism of mac address forwarding table to delete invalid list item, it is not necessary to
List item is locked (preventing other processes from revising list item), avoiding problems when lock times exceedes WatchDog Timer setting
Between, cause the problem that switch device is restarted, improve the security performance of switch device.
In order to make it easy to understand, the technical scheme of the application is described in detail below in conjunction with Fig. 2.Refer to Fig. 2, Fig. 2
Being the flow chart of a kind of method managing list item of the application one exemplary embodiment, the method may comprise steps of:
Step 201, the generation moment of the down event of record interface.
In the present embodiment, the structure of record interface attribute adds a variable, record the down event of this interface
The generation moment.When interface initialization, the value that can arrange this variable is current time, or other any number, when
So, this is not limited by the application.
Step 202, the establishment moment of record list item.
In the present embodiment, the most newly created list item in mac address forwarding table, record creates the moment of this list item, this
There is not sequencing in step and step 201.The variable in the moment that record creates this list item can be existing change in list item
Amount, it is also possible to being newly added variable, this is not limited by the application.
Step 203, scans the list item of predetermined number in mac address forwarding table successively according to predetermined period, is swept to obtain
The establishment moment that the list item retouched is corresponding.
In the present embodiment, process the list item in mac address forwarding table in batches rather than disposably process MAC simultaneously
All of list item in addresses forwarding table, saves the process resource of switch device, improves switch device management list item
Efficiency.Wherein, predetermined period and predetermined number specifically can be arranged according to real network environmental requirement, and the application is not to this
Limit.
For example, it is assumed that in the mac address forwarding table of switch device, comprise 1000 list items, predetermined period is 1 point
Clock, predetermined number is 200, then, switch device often spends 1 minute, successively 200 list items in scanning mac address forwarding table,
All of list item in mac address forwarding table within 5 minutes, can be scanned through, obtain the establishment moment that all scanned list items are corresponding.
Step 204, according to the interface that this scanned list item is corresponding, by the establishment moment corresponding for this scanned list item with
The generation moment of the down event that the corresponding interface is corresponding compares.
Step 205, it is determined that this list item is the most invalid, if this list item is invalid, then proceeds to step 206B, otherwise proceeds to step
206A。
In the present embodiment, be engraved in when the generation of the down event of interface list item corresponding to this interface the establishment moment it
Before (this interface occurs to there occurs again up event after down event, and switch device is created about this interface by learning style
List item) time, it is determined that this list item is effective；The establishment moment of list item corresponding to this interface it is engraved in when the generation of the down event of interface
Time afterwards, owing to this interface has occurred that down event, i.e. before this interface occurs up event again, switch device is not
Message being transmitted by this interface again, so will not E-Packet further according to the list item that this interface is corresponding, thus judging this table
Item is invalid.If this interface follow-up there occurs up event, switch device forwards the message (purpose of message corresponding with this list item
MAC Address is corresponding with the MAC Address in this invalid list item) time, the most do not recycle this list item to forward this message.
Step 206A, retains this list item.
In the present embodiment, subsequent switch device forwards is corresponding with this list item message (target MAC (Media Access Control) address of message with
MAC Address in this list item is corresponding) time, it is possible to use this list item forwards this message.
Step 206B, utilizes the aging mechanism of mac address forwarding table to delete this list item.
In the present embodiment, according to when comparing the generation of the down event creating moment and this list item corresponding interface of list item
The sequencing carved, it is determined that this list item is the most effective.When judge this list item as time invalid, subsequent switch device forwards and this table
During corresponding message (target MAC (Media Access Control) address of message is corresponding with the MAC Address in this invalid list item), do not recycle this table
Item forwards this message.If now selecting, immediately by when being judged to that invalid list item is deleted, to need mac address forwarding table is locked
(preventing other processes from revising list item), and once lock times exceedes the time that WatchDog Timer sets, and may result in exchange
Machine equipment is restarted.Simultaneously as interface may be further continued for after there is down event occurring up event, i.e. interface that down event occurs
It is a circulation process repeatedly with up event, if selecting to be judged to that invalid list item is deleted immediately, then, switch device
Would be at repeatedly deleting the process of list item, this just occupies switch device substantial amounts of process resource, thus reduces exchange
The process performance of machine equipment.Otherwise, in the technical scheme of the application, utilize the aging mechanism of mac address forwarding table to delete and sentence
Being set to invalid list item, the time i.e. existed when this invalid list item (uses this list item to forward for the last time from switch device
Start the clock during message) when exceeding the ageing time pre-seted, this invalid list item will be deleted by switch device, this
Just saving the process resource of switch device, improve the process performance of switch device, to avoid because deleting invalid simultaneously
The overlong time of list item causes the problem that switch device is restarted, and improves the security performance of switch device.
In the technical scheme of the application, when switch device receives message, and inquiry list item determines this message of forwarding
Interface time, without inquiring the list item of correspondence, then create the list item corresponding with this message by learning style；If looked into
Ask corresponding list item (target MAC (Media Access Control) address receiving message matches) with the MAC Address in list item, owing to opening up at network
Flutter when changing, delete invalid list item the most immediately, so needing whether the list item judging to inquire is invalid.Tie below
Close Fig. 3 the processing scheme of the application is illustrated.
Referring to Fig. 3, switch device judges whether the list item inquired may comprise steps of as invalid process:
Step 301, compares the priority that moment occurs creating the moment down event with this list item corresponding interface of list item
Sequentially.
Step 302, it is determined that this list item is the most invalid, if this list item is invalid, then proceeds to step 303B, otherwise proceeds to step
303A。
In the present embodiment, be engraved in when the generation of the down event of interface list item corresponding to this interface the establishment moment it
Before (this interface occurs to there occurs again up event after down event, and switch device is created about this interface by learning style
List item) time, it is determined that this list item is effective；The establishment moment of list item corresponding to this interface it is engraved in when the generation of the down event of interface
Time afterwards, owing to this interface has occurred that down event, i.e. before this interface occurs up event again, switch device is not
Message being transmitted by this interface again, so will not E-Packet further according to the list item that this interface is corresponding, thus judging this table
Item is invalid.
Step 303A, utilizes this list item to forward the message received.
Step 303B, does not utilize this list item to forward the message received, and creates new list item by learning style.
Fig. 4 shows the schematic configuration diagram of the electronic equipment of the exemplary embodiment according to the application.Refer to Fig. 4,
At hardware view, this electronic equipment includes processor 402, internal bus 404, network interface 406, internal memory 408 and non-volatile
Property memorizer 410, is also possible that the hardware required for other business certainly.Processor 402 is from nonvolatile memory 410
Read corresponding computer program then to run in internal memory 402, logic level is formed the device of management list item.Certainly,
In addition to software realization mode, the application is not precluded from other implementations, such as logical device or software and hardware combining
Mode etc., say, that the executive agent of following handling process is not limited to each logical block, it is also possible to be hardware or
Logical device.
Refer to Fig. 5, in Software Implementation, the device of this management list item can include determining that unit 501, deletes list
Unit 502, stick unit 503 and creating unit 504.Wherein:
Determine unit 501, determine the invalid list item that the interface of generation down event is corresponding；
Delete unit 502, utilize the aging mechanism of mac address forwarding table to delete described invalid list item.
Optionally, described determine unit 501 specifically for:
The relatively sequencing that moment occurs creating the moment down event with described list item corresponding interface of list item；
When being engraved in after the described establishment moment when described generation, it is determined that list item corresponding to described establishment moment is invalid.
Optionally, described determine that unit 501 compares establishment moment of list item by following manner and corresponding with described list item connects
The sequencing that moment occurs of the down event of mouth:
The list item of predetermined number in mac address forwarding table is scanned successively, to obtain scanned list item according to predetermined period
The corresponding establishment moment；
According to the interface that described scanned list item is corresponding, by the establishment moment corresponding for described scanned list item with corresponding
The generation moment of the down event that interface is corresponding compares.
Optionally, also include:
Stick unit 503, when described occur time be engraved in described establishment the moment before time, it is determined that the described establishment moment is corresponding
List item is effective, retains described list item.
Optionally, also include:
Creating unit 504, when receiving message, if the existing list item corresponding to described message is invalid list item, passes through
Learning style creates another list item being different from described existing list item.
In said apparatus, the function of unit and the process that realizes of effect specifically refer to corresponding step in said method
Realize process, do not repeat them here.
For device embodiment, owing to it corresponds essentially to embodiment of the method, so relevant part sees method in fact
The part executing example illustrates.Device embodiment described above is only schematically, wherein said as separating component
The unit illustrated can be or may not be physically separate, and the parts shown as unit can be or can also
It not physical location, i.e. may be located at a place, or can also be distributed on multiple NE.Can be according to reality
Need to select some or all of module therein to realize the purpose of the application scheme.Those of ordinary skill in the art are not paying
In the case of going out creative work, i.e. it is appreciated that and implements.
The foregoing is only the preferred embodiment of the application, not in order to limit the application, all essences in the application
Within god and principle, any modification, equivalent substitution and improvement etc. done, should be included within the scope of the application protection.
Claims (10)
1. the method managing list item, it is characterised in that be applied to switch device, described switch device maintains and comprises
The mac address forwarding table of some list items；Described method includes:
Determine the invalid list item that the interface of generation down event is corresponding；
The aging mechanism utilizing mac address forwarding table deletes described invalid list item.
Method the most according to claim 1, it is characterised in that described determine corresponding invalid of interface that down event occurs
List item, including:
The relatively sequencing that moment occurs creating the moment down event with described list item corresponding interface of list item；
When being engraved in after the described establishment moment when described generation, it is determined that list item corresponding to described establishment moment is invalid.
Method the most according to claim 2, it is characterised in that the described establishment moment comparing list item is corresponding with described list item
The sequencing that moment occurs of the down event of interface, including:
The list item of predetermined number in mac address forwarding table is scanned successively according to predetermined period, corresponding to obtain scanned list item
The establishment moment；
According to the interface that described scanned list item is corresponding, by establishment moment corresponding for described scanned list item and the corresponding interface
The generation moment of corresponding down event compares.
Method the most according to claim 2, it is characterised in that also include:
When being engraved in before the described establishment moment when described generation, it is determined that list item corresponding to described establishment moment is effective, retains institute
State list item.
Method the most according to claim 1, it is characterised in that also include:
When receiving message, if the existing list item corresponding to described message is invalid list item, create difference by learning style
Another list item in described existing list item.
6. the device managing list item, it is characterised in that be applied to switch device, described switch device maintains and comprises
The mac address forwarding table of some list items；Described device includes:
Determine unit, determine the invalid list item that the interface of generation down event is corresponding；
Delete unit, utilize the aging mechanism of mac address forwarding table to delete described invalid list item.
Device the most according to claim 6, it is characterised in that described determine unit specifically for:
The relatively sequencing that moment occurs creating the moment down event with described list item corresponding interface of list item；
When being engraved in after the described establishment moment when described generation, it is determined that list item corresponding to described establishment moment is invalid.
Device the most according to claim 7, it is characterised in that described determine that unit compares the wound of list item by following manner
Build the sequencing that the moment occurs of the down event of moment and described list item corresponding interface:
The list item of predetermined number in mac address forwarding table is scanned successively according to predetermined period, corresponding to obtain scanned list item
The establishment moment；
According to the interface that described scanned list item is corresponding, by establishment moment corresponding for described scanned list item and the corresponding interface
The generation moment of corresponding down event compares.
Device the most according to claim 7, it is characterised in that also include:
Stick unit, when being engraved in before the described establishment moment, it is determined that list item corresponding to described establishment moment has when described generation
Effect, retains described list item.
Device the most according to claim 6, it is characterised in that also include:
Creating unit, when receiving message, if the existing list item corresponding to described message is invalid list item, passes through learning style
Create another list item being different from described existing list item.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610621533.0A CN106254245A (en) | 2016-07-29 | 2016-07-29 | A kind of method and device managing list item |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610621533.0A CN106254245A (en) | 2016-07-29 | 2016-07-29 | A kind of method and device managing list item |
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| CN201610621533.0A Pending CN106254245A (en) | 2016-07-29 | 2016-07-29 | A kind of method and device managing list item |
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| CN107547244A (en) * | 2017-05-25 | 2018-01-05 | 新华三技术有限公司 | A kind of table entry processing method and device |
| CN107635025A (en) * | 2017-09-22 | 2018-01-26 | 郑州云海信息技术有限公司 | A kind of method and system of lower brush mac address forwarding table item |
| CN107872391A (en) * | 2017-11-23 | 2018-04-03 | 锐捷网络股份有限公司 | A kind of entry updating method and device |
| CN109218198A (en) * | 2018-10-09 | 2019-01-15 | 迈普通信技术股份有限公司 | Data interactive method, device, MPLS network and storage medium |
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Address after: Binjiang District and Hangzhou city in Zhejiang Province Road 310051 No. 68 in the 6 storey building Applicant after: Hangzhou Dipu Polytron Technologies Inc Address before: Binjiang District and Hangzhou city in Zhejiang Province Road 310051 No. 68 in the 6 storey building Applicant before: Hangzhou Dipu Technology Co., Ltd. |
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Application publication date: 20161221 |