CN106231002A - A kind of method and device safeguarding ARP table - Google Patents
A kind of method and device safeguarding ARP table Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/10—Mapping addresses of different types
- H04L61/103—Mapping addresses of different types across network layers, e.g. resolution of network layer into physical layer addresses or address resolution protocol [ARP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/30—Managing network names, e.g. use of aliases or nicknames
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Abstract
Embodiments providing a kind of method and device safeguarding ARP table, described method is applied to the routing device in IPization wireless access network IPRAN, and described method includes: receive message；Obtaining the first address information from described message, described first address information includes the source address information of described message, and/or destination address information；Judge whether locally stored ARP information exists the ARP information mated with described first address information；If not existing, by described first address information recording in ARP information.The embodiment of the present invention is capable of the fast quick-recovery of ARP table, it is ensured that routing device provides normal network service.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of method and device safeguarding ARP table.
Background technology
IPRAN (IP Radio Access Network, IPization wireless access network) is IP-based transmission net.Network IP
Change trend is a trend maximum in telecommunication carrier networks development in recent years, under the ordering about of this trend, mobile network's
IPization process is also in expansion progressively, as the ingredient that mobile network is important, the IPization of mobile bearer network be one non-
The most important content.
The existing IPRAN network architecture is as it is shown in figure 1, can include in this IPRAN network that base station, A equipment, multiple B set
Standby and convergence device etc..A equipment can be as L2VPN (L2Virtual Private Network, L2 Virtual Private Network
Network) a PE (Provider Edge, provider edge equipment) equipment, B device is as the access of L2VPN-TO-L3VPN.
That is, base station is through the L2VPN business of A equipment, is connected to the entrance of the L3VPN of B device, carries out the forwarding of three layer services.Wherein,
The gateway of base station is on B device.A equipment and B device are router.
In actual applications, A equipment can preserve ARP table in this locality, preserves each base station and each B device in this ARP
Address information.Further, due to reasons such as network failures, A equipment may disconnect and arbitrary base station or the connection of arbitrary B device.
In this case, ARP information corresponding to this base station in the ARP table of this locality preservation or B device can be deleted by A equipment.Therefore, when
A equipment re-establishes with base station or B device after being connected, and A equipment needs the ARP information recovering to preserve in ARP table.
Summary of the invention
The purpose of the embodiment of the present invention is to provide a kind of method and device safeguarding ARP table, to realize the quick of ARP table
Recover, it is ensured that routing device provides normal network service.Concrete technical scheme is as follows:
First aspect, embodiments provides a kind of method safeguarding ARP table, and described method should
Routing device in IPization wireless access network IPRAN, described method includes:
Receive message；
Obtaining the first address information from described message, described first address information includes the source address letter of described message
Breath, and/or destination address information；
Judge whether locally stored ARP information exists the ARP information mated with described first address information；If not depositing
, by described first address information recording in ARP information.
Second aspect, embodiments provides a kind of device safeguarding ARP table, and described device should
Routing device in IPization wireless access network IPRAN, described device includes:
Receiver module, is used for receiving message；
Acquisition module, for obtaining the first address information from described message, described first address information includes described report
The source address information of literary composition, and/or destination address information；
Whether processing module, mate with described first address information for judging to exist in locally stored ARP information
ARP information；If not existing, by described first address information recording in ARP information.
Embodiments providing a kind of method and device safeguarding ARP table, routing device can receive according to it
Message, obtain the source address information that wherein comprises and/or destination address information, and according to the source address information obtained and/or
Destination address information, updates the ARP information that this locality preserves.Therefore, it is possible to realize the fast quick-recovery of ARP table, it is ensured that routing device
Normal network service is provided.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is IPRAN network architecture schematic diagram；
The flow chart of a kind of method safeguarding ARP table that Fig. 2 provides for the embodiment of the present invention；
The structural representation of a kind of device safeguarding ARP table that Fig. 3 provides for the embodiment of the present invention.
Detailed description of the invention
In order to realize the fast quick-recovery of ARP table, it is ensured that routing device provides normal network service, and the embodiment of the present invention carries
Supply a kind of method and device safeguarding ARP table.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
It should be noted that in the case of not conflicting, the embodiment in the present invention and the feature in embodiment can phases
Combination mutually.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
In actual applications, A equipment can preserve ARP table in this locality, preserves each base station and each B device in this ARP
Address information.And then, A equipment can complete intercepting for answering service and active push service of ARP according to this ARP table.
Such as, when A equipment receives the ARP request message of the request B device address that base station sends, A equipment can root
The ARP table preserved according to this locality, searches the address of corresponding B device, builds arp reply message, and is sent to the base station of correspondence；When
When A equipment receives the ARP request message of the request base station address that B device sends, the ARP that A equipment can preserve according to this locality
Table, searches the address of corresponding base station, builds arp reply message, and is sent to the B device of correspondence.
It addition, A equipment can be to be periodically sent to base station by the address information of B device with the form of gratuitous ARP packet；
Or the address information of base station is sent to B device with the form of gratuitous ARP packet.Wherein, address above mentioned information includes IP address
And MAC Address.
In actual applications, due to reasons such as network failures, A equipment may disconnect and arbitrary base station or arbitrary B device
Connection.In this case, ARP information corresponding to this base station in the ARP table of this locality preservation or B device can be deleted by A equipment.
In this case, after A equipment re-establishes with this base station or B device and to be connected, owing in ARP table, record should not
Base station or ARP information corresponding to B device, A equipment needs to relearn the address information of this base station or B device, recovers this locality and protects
The ARP table deposited.Such as, A equipment can send ARP request message to this base station or B device, when receiving base station or B device returns
After the arp response message returned, A equipment can recover ARP according to the address information of the base station carried in response message or B device
Table.
But, above-mentioned ARP table restoration methods, need A equipment to send ARP request message, and receive arp response message, so
Recovering ARP table according to response message afterwards, process is comparatively laborious, the longest.Further, during A equipment recovers ARP table, A equipment
Normal ARP can not be carried out intercept for answering service and active push service.
In order to realize the fast quick-recovery of ARP table, it is ensured that routing device provides normal network service, and the embodiment of the present invention carries
Supply a kind of procedure safeguarding ARP table, as in figure 2 it is shown, this process may include that
S101, receives message.
The method that the embodiment of the present invention provides can apply to the routing device in IPRAN.Specifically, can apply to
A equipment in IPRAN.Wherein, A equipment is to operate in the gateway device in double layer network.
Wherein, this message can be three layers and E-Packets.Such as, these three layers E-Packet can be DHCP (Dynamic
Host Configuration Protocol, DynamicHost arranges agreement) message.
S102, obtains the first address information from described message, and described first address information includes the seedbed of described message
Location information, and/or destination address information.
After A equipment receives message, it can obtain the first address information from this message.Wherein, this first address
Information can include source address information, and/or destination address information.Wherein, above-mentioned source address information can include IP address and
MAC Address, above-mentioned purpose address information can include IP address and MAC Address.
Such as, its message received can be resolved by A equipment, it is judged that the type of this message.And then, can basis
The form of the message of the type, extracts predetermined field from message, and using the field of extraction as source address information, and/or mesh
Address information.
S103, it is judged that whether there is the ARP information mated with described first address information in locally stored ARP information；
If not existing, by described first address information recording in ARP information.
In embodiments of the present invention, A equipment can be sent to the message of B device according to base station, or B device is sent to base station
Message, carry out the recovery of ARP table.Wherein, above-mentioned B device is to operate in the gateway device in three-layer network.
After getting the first address information in the message that A equipment receives from it, it may determine that locally stored ARP letter
Whether breath exists the ARP information mated with the first address information；If not existing, then show to mate with the first address information
ARP information is eliminated, and in this case, A equipment can be by the first address information recording in ARP information, to recover ARP
Table.
Specifically, A equipment can be according to device identification corresponding to the first address information obtained, at locally stored ARP
Information searches whether there is the ARP information that this device identification is corresponding, if it is, show locally stored ARP information exists
The ARP information mated with the first address information；If it does not, show locally stored ARP information not to exist and the first address letter
The ARP information of breath coupling.
When there is not the ARP information mated with the first address information in locally stored ARP information, A equipment can be by
Its first address information recording obtained from message is in ARP information.
Such as, when A equipment gets source address information and destination address information, it may determine that locally stored ARP
Whether information stores source address information, if not having, then by this source address information record in ARP information.Further, it also may be used
To judge whether locally stored ARP information stores on purpose location information, if not having, then by this destination address information record
In ARP information.
Embodiments provide a kind of method safeguarding ARP table, the message that routing device can receive according to it,
Obtain the source address information and/or destination address information wherein comprised, and according to the source address information obtained and/or destination address
Information, updates the ARP information that this locality preserves.Compared with prior art, routing device is made without the request of address information, i.e.
ARP information can be obtained to recover ARP table, therefore, it is possible to realize the fast quick-recovery of ARP table, it is ensured that routing device provides normal
Network service.
It is appreciated that in actual applications, after bar ARP information a certain in ARP table is eliminated, it is impossible to ensure that A equipment exists
Receive message in short time, and then recover ARP table according to this message.
Therefore, recover efficiency to improve ARP table, when A equipment receives message, and therefrom get the first address information
After, address information can be saved in backup ARP information by A equipment, to recover ARP table according to backup ARP information.Such as, A
Equipment can preserve backup ARP table in this locality, preserves backup ARP information wherein.
In this case, A equipment can compare locally stored ARP information with backup ARP information the most identical, if not
With, backup ARP information is synchronized in ARP information.
Such as, can to compare the backup information that includes with ARP information of ARP information the most identical, if not for A equipment
With, will be present in the information backing up ARP information and being not present in ARP information, be synchronized in ARP information, to realize ARP information
Synchronization with backup ARP information.
Alternatively, in order to improve the accuracy of ARP table, A equipment can at set time intervals, as 10 seconds, 30 seconds,
1 minute etc., the most locally stored ARP information was the most identical, if it is different, backup ARP information be synchronized to backup ARP information
In ARP information.
It should be noted that the backup ARP information preserved in backup ARP table will not be deleted the most immediately along with rolling off the production line of equipment
Remove.Only when A equipment determines that certain base station or B device roll off the production line for a long time, it just can delete the backup ARP letter that this equipment is corresponding
Breath.
As, in actual applications, when base station or B device roll off the production line, it can notify A equipment to A equipment dispatch order message
It will roll off the production line.In this case, A equipment can delete, in backup ARP table, the backup ARP information that this equipment is corresponding.
Or, when A device periodically relatively more locally stored ARP information with to back up ARP information the most identical, if not
With, when backup ARP information being synchronized in ARP information, A equipment may determine that whether a certain bar backup ARP information is by repeatedly same
Walk in ARP information, if it is, may indicate that equipment corresponding to this backup ARP information may roll off the production line.In this case, A sets
For this backup ARP information being deleted.
It is appreciated that in actual applications, not all message all includes address information.Such as, three layers turn
Transmit messages and literary composition can include address information, two layer message does not include address information.
Therefore, in embodiments of the present invention, when A equipment receives message, can first determine whether whether this message is default
Message, if it is, obtain the first address information again from this message.
Specifically, A equipment may determine that in its message received whether carry predetermined information, if it is, determine this
Message is for presetting message.Wherein, above-mentioned predetermined information can be that UDP (User Datagram Protocol, assist by user data package
View) port numbers.
Corresponding to above method embodiment, the embodiment of the present invention additionally provides corresponding device embodiment.
A kind of device safeguarding ARP table that Fig. 3 provides for the embodiment of the present invention, described device is applied to
Routing device in IPization wireless access network IPRAN, described device includes:
Receiver module 310, is used for receiving message；
Acquisition module 320, for obtaining the first address information from described message, described first address information includes described
The source address information of message, and/or destination address information；
Whether processing module 330, mate with described first address information for judging to exist in locally stored ARP information
ARP information；If not existing, by described first address information recording in ARP information.
Embodiments provide a kind of device safeguarding ARP table, the message that routing device can receive according to it,
Obtain the source address information and/or destination address information wherein comprised, and according to the source address information obtained and/or destination address
Information, updates the ARP information that this locality preserves.Compared with prior art, routing device is made without the request of address information, i.e.
ARP information can be obtained to recover ARP table, therefore, it is possible to realize the fast quick-recovery of ARP table, it is ensured that routing device provides normal
Network service.
Further, described device also includes:
Memory module (not shown), for being saved in described first address information in backup ARP information；
Described processing module 330, is additionally operable to the locally stored ARP information of comparison the most identical, if not with backup ARP information
With, described backup ARP information is synchronized in described locally stored ARP information.
Further, described processing module 330, specifically at set time intervals, compares the most locally stored ARP
Information is the most identical, if it is different, described backup ARP information is synchronized to described locally stored ARP information with backup ARP information
In.
Further, described device also includes:
Judge module (not shown), is used for judging whether described message is to preset message；If it is, obtain described in Chu Faing
Delivery block 320.
Further, described judge module, specifically for when described message carries predetermined information, determine described report
Literary composition is for presetting message.
Below in conjunction with a specific embodiment, offer of the present invention is safeguarded, and the method for ARP table is described in detail.
In embodiments of the present invention, recovering efficiency to improve ARP table, A equipment can preserve backup ARP table in this locality,
During there to be ARP information to be eliminated in ARP table, recover ARP table according to backup ARP table.
Wherein, the backup ARP information of the backup ARP table that A equipment preserves can be the Receive message received according to A equipment
's.
Such as, when A equipment receives DHCP message, A equipment can obtain from this DHCP message including source
IP address, source MAC, purpose IP address and target MAC (Media Access Control) address.And by the source IP address obtained, source MAC, purpose
IP address and target MAC (Media Access Control) address record are in backup ARP table.
In actual applications, each base station or B device in IPRAN network all may send DHCP message, and base station sets with B
The DHCP message that preparation is sent all can forward through A equipment.Therefore, A equipment can preserve in IPRAN network each base station and
The address information of each B device.
In this case, when needs recover ARP table, and e.g., in A equipment Inspection to ARP table, certain ARP information needs to recover
Time, or, when A device periodically recovers ARP table, its backup ARP information that can preserve according to backup ARP table, recover ARP
ARP information to be restored in table.
When in A equipment Inspection to ARP table, certain ARP information needs to recover, it can search backup ARP table, from backup
ARP table finds the backup ARP information of correspondence, and the backup ARP information found is saved in ARP table, thus realize
The recovery of ARP table.
When A device periodically recovers ARP table, it can contrast the information preserved in ARP table and backup ARP table, identifies
The information being present in backup ARP table and be not present in ARP table, and the information recognized is saved in ARP table, thus real
The recovery of existing ARP table.
For device embodiment, owing to it is substantially similar to embodiment of the method, so describe is fairly simple, relevant
Part sees the part of embodiment of the method and illustrates.
It should be noted that in this article, the relational terms of such as first and second or the like is used merely to a reality
Body or operation separate with another entity or operating space, and deposit between not necessarily requiring or imply these entities or operating
Relation or order in any this reality.And, term " includes ", " comprising " or its any other variant are intended to
Comprising of nonexcludability, so that include that the process of a series of key element, method, article or equipment not only include that those are wanted
Element, but also include other key elements being not expressly set out, or also include for this process, method, article or equipment
Intrinsic key element.In the case of there is no more restriction, statement " including ... " key element limited, it is not excluded that
Including process, method, article or the equipment of described key element there is also other identical element.
Each embodiment in this specification all uses relevant mode to describe, identical similar portion between each embodiment
Dividing and see mutually, what each embodiment stressed is the difference with other embodiments.Real especially for system
For executing example, owing to it is substantially similar to embodiment of the method, so describe is fairly simple, relevant part sees embodiment of the method
Part illustrate.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit protection scope of the present invention.All
Any modification, equivalent substitution and improvement etc. made within the spirit and principles in the present invention, are all contained in protection scope of the present invention
In.
Claims (10)
1. the method safeguarding ARP table, it is characterised in that described method is applied to IPization wireless access network
Routing device in IPRAN, described method includes:
Receive message；
Obtaining the first address information from described message, described first address information includes the source address information of described message, and/
Or destination address information；
Judge whether locally stored ARP information exists the ARP information mated with described first address information；If not existing,
By described first address information recording in ARP information.
Method the most according to claim 1, it is characterised in that described obtain from described message the first address information it
After, described method also includes:
Described first address information is saved in backup ARP information；
Described judge whether locally stored ARP information exists the ARP information mated with described first address information；If not depositing
, described first address information recording is included in ARP information:
The most locally stored ARP information is the most identical, if it is different, described backup ARP information be synchronized to backup ARP information
In described locally stored ARP information.
Method the most according to claim 2, it is characterised in that ARP information and backup ARP that described comparison is locally stored believe
Cease the most identical, include if it is different, described backup ARP information is synchronized to described locally stored ARP information:
At set time intervals, the most locally stored ARP information is the most identical with backup ARP information, if it is different, by institute
State backup ARP information to be synchronized in described locally stored ARP information.
Method the most according to claim 1, it is characterised in that described obtain from described message the first address information it
Before, described method also includes:
Judge whether described message is to preset message；If it is, obtain the first address information from described message.
Method the most according to claim 4, it is characterised in that described judge that whether described message is to preset message to include:
When described message carries predetermined information, determine that described message is for presetting message.
6. the device safeguarding ARP table, it is characterised in that described device is applied to IPization wireless access network
Routing device in IPRAN, described device includes:
Receiver module, is used for receiving message；
Acquisition module, for obtaining the first address information from described message, described first address information includes described message
Source address information, and/or destination address information；
Processing module, for judging whether there is the ARP letter mated with described first address information in locally stored ARP information
Breath；If not existing, by described first address information recording in ARP information.
Device the most according to claim 6, it is characterised in that described device also includes:
Memory module, for being saved in described first address information in backup ARP information；
Described processing module, is additionally operable to the locally stored ARP information of comparison the most identical with backup ARP information, if it is different, by institute
State backup ARP information to be synchronized in described locally stored ARP information.
Device the most according to claim 7, it is characterised in that described processing module, specifically for according to the time set
Interval, the most locally stored ARP information is the most identical with backup ARP information, if it is different, described backup ARP information synchronized
In described locally stored ARP information.
Device the most according to claim 6, it is characterised in that described device also includes:
Judge module, is used for judging whether described message is to preset message；If it is, trigger described acquisition module.
Device the most according to claim 9, it is characterised in that described judge module, specifically for when taking in described message
During with predetermined information, determine that described message is for presetting message.
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| CN108540588A (en) * | 2018-03-15 | 2018-09-14 | 深信服科技股份有限公司 | MAC Address acquisition methods and system, Network Security Device and readable storage medium storing program for executing |
| CN110365599A (en) * | 2019-07-12 | 2019-10-22 | 中国电信集团工会上海市委员会 | A kind of Openflow interchanger forwarding channel quickly updates system and method |
| CN113365296A (en) * | 2020-03-05 | 2021-09-07 | 成都鼎桥通信技术有限公司 | Network configuration method and equipment of communication central station |
| CN113923150A (en) * | 2021-09-30 | 2022-01-11 | 新华三信息安全技术有限公司 | Method, device, electronic equipment and medium for updating route |
| CN114070790A (en) * | 2021-11-15 | 2022-02-18 | 中国联合网络通信集团有限公司 | Method, PE, system, equipment and medium for forwarding information in VPLS equipment |
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Address after: 310052 Binjiang District Changhe Road, Zhejiang, China, No. 466, No. Applicant after: Xinhua three Technology Co., Ltd. Address before: 310053 Hangzhou science and Technology Industrial Park, high tech Industrial Development Zone, Zhejiang Province, No. six and road, No. 310 Applicant before: Huasan Communication Technology Co., Ltd. |
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Application publication date: 20161214 |