CN106059963A - Data transmission control method and device - Google Patents
Data transmission control method and device Download PDFInfo
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- CN106059963A CN106059963A CN201610402523.8A CN201610402523A CN106059963A CN 106059963 A CN106059963 A CN 106059963A CN 201610402523 A CN201610402523 A CN 201610402523A CN 106059963 A CN106059963 A CN 106059963A
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- vlan
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
- H04L12/467—Arrangements for supporting untagged frames, e.g. port-based VLANs
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/35—Switches specially adapted for specific applications
- H04L49/354—Switches specially adapted for specific applications for supporting virtual local area networks [VLAN]
Abstract
The invention provides a data transmission control method and device. The method comprises the steps of determining a forwarding VLAN of uplink data streams which are allowed to pass through by a target port when it is determined that the condition that the forwarding virtual local area network VLAN of the uplink data streams is different from an initial VLAN exists in the target port; closing a VLAN filtering detection function for the target port, wherein the function is in a chip corresponding to the target port and is started by default; and setting the target port to allow the uplink data streams of the forwarding VLAN to pass through and forbid the uplink data streams of other VLANs to pass through. Through application of the embodiment of the method and the device, filtering detection based on the forwarding VLAN can be realized, and the possibility of generating a loop is reduced.
Description
Technical field
The present invention relates to network communication technology field, particularly relate to a kind of data transfer control method and device.
Background technology
It is the simplest for dividing VLAN (Virtual Local Area Network, VLAN) based on port
Single, maximally effective VLAN division methods.It defines member of vlan according to device port, will specify
After port joins in assigned vlan, this port just can forward the message of this VLAN.
Dividing to realize VLAN based on port, the data stream needing chip to receive port is carried out
VLAN filters inspection, it is achieved as follows:
The port needing intercommunication adds identical VLAN；The port needing isolation adds different VLAN；
Upstream is VLAN and filters inspection by chip, adds the port of certain VLAN, just allows
The upstream of this VLAN passes through, and otherwise carries out data stream filtering, does not i.e. add the end of this VLAN
Mouthful, do not allow the upstream of this VLAN to pass through.
But practice finds, it is (initial based on Initial that the VLAN of existing chip support filters inspection
Changing) VLAN carries out rather than forwards VLAN, as forwarding VLAN and Initial of certain port on equipment
During VLAN difference, if using the VLAN of existing chip to filter Examined effect, this port needs to add
Initial VLAN, adds the possibility producing loop.
As a example by data transmitting scene shown in Fig. 1, Device (equipment) B is that the downstream of Device A sets
Standby, Device B to Device A has two data feedback channels, and upstream all carries VLAN100,
Wherein the upstream of passage 1 carries out VLAN replacement on Device A and (assumes by VLAN100
Replace with VLAN200), the upstream of passage 2 keeps constant.If using existing chip to support
VLAN filters Examined effect, then port GE1/0/1, GE1/0/2 on Device A are required for adding
Entering VLAN100, now, the flow of Device A upper port GE1/0/2 may pass through port GE1/0/1
Forward, thus produce loop.
Summary of the invention
The present invention provides a kind of data transfer control method and device, to solve what existing chip was supported
VLAN filters the problem that Examined effect easily produces loop.
First aspect according to embodiments of the present invention, it is provided that a kind of data transfer control method, including:
When determining that target port exists forwarding virtual LAN VLAN and the initialization of upstream
During different for VLAN situation, determine that described target port allows the forwarding of the upstream passed through
VLAN；
Close the VLAN for described target port that on the chip that described target port is corresponding, acquiescence is opened
Filter audit function, and described target port is positioned to allow for the upstream of described forwarding VLAN
Pass through, and forbid that the upstream of other VLAN passes through.
Second aspect according to embodiments of the present invention, it is provided that a kind of data transfer controller, including:
Determine unit, for when determining that target port exists the forwarding VLAN of upstream
VLAN, from when initializing the different situation of VLAN, determines that described target port allows to pass through up
The forwarding VLAN of data stream；
Control unit, for close on the chip that described target port is corresponding that acquiescence opens for described mesh
The VLAN of mark port filters audit function, and described target port is positioned to allow for described forwarding
The upstream of VLAN passes through, and forbids that the upstream of other VLAN passes through.
The application embodiment of the present invention, by when determining that target port exists forwarding VLAN and Initial
During different for VLAN situation, determine that this target port allows the forwarding VLAN of the upstream passed through,
And then close the VLAN filtration inspection for target port that acquiescence on the chip that target port is corresponding is opened
Function, and the upstream that target port is positioned to allow for this forwarding VLAN passes through, and forbids other
The upstream of VLAN passes through, it is achieved that filtration inspection based on forwarding VLAN, reduces generation
The probability of loop.
Accompanying drawing explanation
Fig. 1 is the configuration diagram of a kind of data transmitting scene；
Fig. 2 is the schematic flow sheet of a kind of data transfer control method that the embodiment of the present invention provides；
Fig. 3 is the structural representation of a kind of data transfer controller that the embodiment of the present invention provides；
Fig. 4 is the structural representation of the another kind of data transfer controller that the embodiment of the present invention provides.
Detailed description of the invention
For the technical scheme making those skilled in the art be more fully understood that in the embodiment of the present invention, and make
The above-mentioned purpose of the embodiment of the present invention, feature and advantage can become apparent from understandable, the most right
In the embodiment of the present invention, technical scheme is described in further detail.
Refer to Fig. 2, for the flow process signal of a kind of data transfer control method that the embodiment of the present invention provides
Figure, as in figure 2 it is shown, this data transfer control method may comprise steps of:
It should be noted that the executive agent of step 201～step 202 can be with access device or access device
In processor, such as CPU (Center Process Unit, CPU).Wherein, this access
Equipment can include but not limited to router or switch etc..For ease of describing, below with step 201～
The executive agent of step 202 is to illustrate as a example by access device.
Step 201, when determining that target port exists the forwarding VLAN and Initial VLAN of upstream
During different situation, determine that target port allows the forwarding VLAN of the upstream passed through.
In the embodiment of the present invention, it is contemplated that the VLAN of existing chip filters Examined effect on access device
Exist in the scene different for forwarding VLAN from Initial VLAN of certain port, generation loop can be increased
May, therefore, in order to avoid the generation of loop, for the forwarding VLAN that there is certain port on access device
The scene different from Initial VLAN, access device is required for the VLAN filtration inspection of this port to be needed
To carry out rather than based on Initial VLAN based on forwarding VLAN.
Correspondingly, in embodiments of the present invention, certain port (referred to herein as target is determined when access device
Port) when there is different for forwarding VLAN from the Initial VLAN situation of upstream, access sets
Standby needs first determines the forwarding VLAN that target port allows the upstream passed through.
As the optional embodiment of one, in embodiments of the present invention, determine that target port exists up
The situation different for forwarding VLAN from Initial VLAN of data stream, may include that
When determining that target port is deployed with VLAN mapping business, determine and on target port, there is line number
Situation different for forwarding VLAN from Initial VLAN according to stream；
Correspondingly, determine that target port allows the forwarding VLAN of the upstream passed through, may include that
VLAN after the mapping include VLAN mapping ruler corresponding for target port is defined as target
Port allows the forwarding VLAN of the upstream passed through.
In this embodiment, when access device determines that target port is deployed with VLAN and maps business, as
VXLAN (VirtualExtensible Local Area it is deployed with on the target port of access device
Network, virtual expansible LAN) (Edge Virtual Bridging, edge is empty for business or EVB
Intend bridge) business time, the upstream that target port is received, access device need according on this
VLAN ID (mark) (initializing the VLAN ID of VLAN) the coupling phase carried in row data stream
The VLAN mapping ruler answered, and when the match is successful, by the VLAN ID carried in upstream
Replace with the VLAN ID after the mapping that VLAN mapping ruler includes and (forward the VLAN of VLAN
ID), i.e. there are the feelings different for forwarding VLAN from Initial VLAN of upstream on target port
Condition.
In this case, in order to avoid loop produces, access device needs to wrap in VLAN mapping ruler
VLAN after the mapping included is defined as target port and allows the forwarding VLAN of the upstream passed through,
And it is carried out filtering inspection by the Initial VLAN being no longer based on upstream.
The VLAN for target port that on the chip that step 202, closedown target port are corresponding, acquiescence is opened
Filter audit function, and forward the upstream of VLAN determined by being positioned to allow for by target port
Pass through, and forbid that the upstream of other VLAN passes through.
In the embodiment of the present invention, there is the forwarding of upstream on target port when access device determines
The situation that VLAN from Initial VLAN is different, and determine that target port allows the upstream data road passed through
Forwarding VLAN time, access device needs to be first shut off on the chip that target port is corresponding what acquiescence was opened
VLAN for target port filters audit function, i.e. closes on the chip that target port is corresponding for mesh
The filtration inspection that mark port is carried out based on Initial VLAN.
Then, access device also need to be positioned to allow for target port determined by forward that VLAN's is upper
Row data circulated, and forbade that the upstream of other VLAN passes through.
As an example it is assumed that the port 1 of access device is deployed with VLAN maps business, need VLAN
VLAN ID in the upstream of 100 replaces with VLAN 200, then access device may determine that this
The forwarding VLAN of upstream is VLAN 200, i.e. upstream after VLAN maps needs
Forwarding in VLAN 200, now, access device needs to close on the chip that target port is corresponding to be given tacit consent to
The VLAN for target port opened filter audit function (this acquiescence open for target port
It is only to allow the upstream of VLAN 100 to pass through that VLAN filters audit function), and by destination end
Mouth is positioned to allow for the upstream of VLAN 200 to be passed through, and forbids other VLAN (VLAN 200
Outside other VLAN) upstream pass through.
As the optional embodiment of one, in embodiments of the present invention, target port is positioned to allow for
Determined by forward the upstream of VLAN to pass through, and forbid other VLAN upstream data circulation
Cross, may include that
Issue first data transmission to the chip that target port is corresponding and control rule and the second Data Transmission Controlling
Rule, this first data transmission controls rule and abandons target port for the chip indicating target port corresponding
The upstream received, the second Data Transmission Controlling rule is for indicating the chip that target port is corresponding
The upstream forwarding VLAN determined by permission passes through；Wherein, first data transmission controls rule
Priority less than second Data Transmission Controlling rule.
In this embodiment, access device close that acquiescence on chip corresponding to target port opens for
After the VLAN of target port filters audit function, in addition it is also necessary to the chip corresponding to target port issues two
Bar is for the Data Transmission Controlling rule of target port, and wherein, a data transmission controls rule and is used for referring to
Show that the chip that target port is corresponding abandons the upstream (referred to herein as first that target port receives
Data Transmission Controlling rule), another turns determined by the chip permission that target port is corresponding for indicating
Send out the upstream of VLAN by (the referred to herein as second Data Transmission Controlling rule), the first number
The priority of rule is controlled less than the second Data Transmission Controlling rule according to transmission.
Correspondingly, when the target port of access device receives upstream, need first to mate second
Data Transmission Controlling rule, and when the match is successful, it is allowed to this upstream passes through, and otherwise, continues
Coupling first data transmission controls rule, abandons this upstream, thus, the destination end of access device
Mouth forwards the upstream of VLAN to pass through determined by only allowing, and forbids that other VLAN's is up
Data stream passes through.
Further, in embodiments of the present invention, reflect when the target port of access device is deployed with VLAN
When penetrating business, the target port of access device receives the handling process of upstream and can include following
Step:
11), when target port receives target upstream, take according in target upstream
The VLAN ID of band mates the VLAN mapping ruler that target port is corresponding；
12) if the match is successful, according to VLAN mapping ruler, target upstream is carried out VLAN
ID replaces, and determines whether in the target after VLAN ID replacement according to the VLAN ID after replacing
Row data circulated；
13) if mating unsuccessful, then determine according to the VLAN ID carried in target upstream
Target upstream whether is allowed to pass through.
It should be noted that in embodiments of the present invention, target upstream is also not specific to a certain fixing
Upstream, but arbitrary upstream that the target port that may refer to access device receives.
Concrete, in embodiments of the present invention, if the target port of access device is deployed with VLAN and maps
Business, then, when the target port of access device receives target upstream, access device needs elder generation
Corresponding VLAN mapping ruler is mated according to the VLAN ID carried in this target upstream；
If the match is successful, i.e. match the VLAN mapping ruler of correspondence, then access device needs this mesh
VLAN ID in mark upstream replaces with the VLAN of mated VLAN mapping ruler instruction
ID, and mate the second Data Transmission Controlling rule according to the VLAN ID after replacing, if coupling the second number
Control rule success according to transmission, then allow this target upstream to pass through；Otherwise, after according to replacing
VLAN ID coupling first data transmission controls rule, abandons this target upstream.
If it fails to match, i.e. do not match the VLAN mapping ruler of correspondence, then access device can basis
The Initial VLAN ID of this target upstream mates the second Data Transmission Controlling rule, if coupling the
Two Data Transmission Controlling rule successes, then allow this target upstream to pass through；Otherwise, according to Initial
VLAN ID coupling first data transmission controls rule, abandons this target upstream.
What deserves to be explained is, in embodiments of the present invention, as the VLAN carried in target upstream
When ID (the VLAN ID of Initial VLAN) does not matches the VLAN mapping ruler of correspondence, access sets
Standby this target upstream that can also directly abandon, and no longer carry out data transmission controlling the coupling of rule,
It implements and does not repeats them here.
Visible, in the method flow shown in Fig. 2, by when determining that target port exists forwarding VLAN
During different from Initial VLAN situation, determine turning of the upstream that this target port allows to pass through
Send out VLAN, so close that acquiescence on chip corresponding to target port opens for target port
VLAN filters audit function, and target port is positioned to allow for the upstream of this forwarding VLAN
Pass through, forbid that the upstream of other VLAN passes through, it is achieved that based on the filtration inspection forwarding VLAN
Look into, reduce the probability producing loop.
In order to make those skilled in the art be more fully understood that the technical scheme that the embodiment of the present invention provides, below
The technical scheme provided the embodiment of the present invention in conjunction with concrete application scenarios is described below in greater detail.
As a example by data transmitting scene shown in Fig. 1, it is assumed that Device A upper port GE1/0/1 is deployed with
VLAN maps business, and VLAN mapping ruler is by the upstream on port GE1/0/1
VLAN ID is replaced with VLAN 200 by VLAN 100, goes to the data stream of outer net by VLAN 200
Forward；VLAN ID in upstream on port GE1/0/2 keeps constant, port GE1/0/2
Add VLAN 100.
Based on this data transmitting scene, the data transfer control method that the embodiment of the present invention provides is accomplished by
1, determine that port GE1/0/1 allows the forwarding VLAN of the upstream data passed through to be VLAN 200；
Wherein, port GE1/0/1 need not add VLAN 100；
2, close that acquiescence on chip corresponding to Device A upper port GE1/0/1 opens for destination end
The VLAN of mouth filters audit function；
3, Device A issues first data transmission control rule to the chip that port GE1/0/1 is corresponding, and
Second Data Transmission Controlling rule；Wherein:
1), first data transmission controls rule for indicating chip corresponding for port GE1/0/1 to abandon port
All upstreams that GE1/0/1 receives；
2), the second Data Transmission Controlling rule is used for indicating port GE1/0/1 to allow to forward the VLAN be
The upstream of VLAN 200 passes through；Wherein, the priority of first data transmission control rule is less than
Second Data Transmission Controlling rule.
4, the upstream received for port GE1/0/1, Device A is first according to this upstream data
The VLAN ID (the VLAN ID of Initial VLAN) carried in stream mates VLAN mapping ruler,
If coupling VLAN mapping ruler success, i.e. Initial VLAN ID is VLAN 100, then Device A
VLAN 100 is replaced with VLAN 200；Device A is according to VLAN ID (the i.e. VLAN after replacing
200) mate the second Data Transmission Controlling rule, determine that this upstream of permission passes through；
5, the VLAN that the upstream received for port GE1/0/2 is supported according to existing chip
Filter Examined effect to process.
Visible, in above-mentioned flow process, port GE1/0/1 allows the flow of VLAN 200 to pass through, port
GE1/0/2 allows the flow of VLAN 100 to pass through, and two ports are isolated, it is to avoid loop generation.
By above description it can be seen that in the technical scheme that the embodiment of the present invention provides, by when really
When the port that sets the goal exists situations different for forwarding VLAN from Initial VLAN, determine this target port
Allow the forwarding VLAN of the upstream passed through, and then close acquiescence on the chip that target port is corresponding
The VLAN for target port opened filters audit function, and target port is positioned to allow for this turn
The upstream sending out VLAN passes through, and forbids that the upstream of other VLAN passes through, it is achieved that base
In the filtration inspection of forwarding VLAN, reduce the probability producing loop.
Refer to Fig. 3, for the structural representation of a kind of data transfer controller that the embodiment of the present invention provides
Figure, wherein, this device can apply to the access device in said method embodiment, as it is shown on figure 3,
This device may include that
Determine unit 310, for when determining that target port exists the forwarding VLAN of upstream
VLAN, from when initializing the different situation of VLAN, determines that described target port allows to pass through up
The forwarding VLAN of data stream；
Control unit 320, for close on the chip that described target port is corresponding that acquiescence opens for institute
The VLAN stating target port filters audit function, and described target port is positioned to allow for described forwarding
The upstream of VLAN passes through, and forbids that the upstream of other VLAN passes through.
In an alternative embodiment, described control unit 320, can be specifically for described target port pair
The chip answered issues first data transmission and controls rule and the second Data Transmission Controlling rule, described first number
Control rule according to transmission to receive for indicating the chip that described target port is corresponding to abandon described target port
Upstream, described second Data Transmission Controlling rule is for indicating the core that described target port is corresponding
Sheet allows the upstream of described forwarding VLAN to pass through；Wherein, described first data transmission controls rule
Priority then is less than described second Data Transmission Controlling rule.
In an alternative embodiment, described determine unit 310, can be specifically for when determine destination end oral area
When administration has VLAN to map business, determine that target port exists the forwarding VLAN of upstream with initial
Change the different situation of VLAN；The mapping that VLAN mapping ruler corresponding for described target port is included
After VLAN be defined as the forwarding VLAN of upstream that described target port allows to pass through.
See also Fig. 4, for the knot of the another kind of data transfer controller that the embodiment of the present invention provides
Structure schematic diagram, this embodiment is on the basis of aforementioned embodiment illustrated in fig. 3, and the data shown in Fig. 4 are transmitted
Control device can also include:
Receive unit 330, be used for receiving target upstream；
Matching unit 340, for receiving target when described reception unit 330 from described target port
During row data stream, the VLAN mark ID according to carrying in described target upstream mates described mesh
The VLAN mapping ruler that mark port is corresponding；
Map unit 350, if for the match is successful, according to described VLAN mapping ruler to described target
Upstream carries out VLAN ID replacement；
Described control unit 320, is additionally operable to determine whether VLAN according to the VLAN ID after replacing
Target upstream after ID replaces passes through.
In an alternative embodiment, described control unit 320, it is also possible to if unsuccessful for mating, then root
Described target upstream data is determined whether according to the VLAN ID carried in described target upstream
Stream passes through.
In said apparatus, the function of unit and the process that realizes of effect specifically refer in said method corresponding
Step realize process, do not repeat them here.
For device embodiment, owing to it corresponds essentially to embodiment of the method, so relevant part ginseng
See that the part of embodiment of the method illustrates.Device embodiment described above is only schematically,
The wherein said unit illustrated as separating component can be or may not be physically separate, makees
The parts shown for unit can be or may not be physical location, i.e. may be located at a place,
Or can also be distributed on multiple NE.Can select according to the actual needs part therein or
The whole module of person realizes the purpose of the present invention program.Those of ordinary skill in the art are not paying creativeness
In the case of work, i.e. it is appreciated that and implements.
As seen from the above-described embodiment, by when determining that target port exists forwarding VLAN and Initial
During different for VLAN situation, determine that this target port allows the forwarding VLAN of the upstream passed through,
And then close the VLAN filtration inspection for target port that acquiescence on the chip that target port is corresponding is opened
Function, and the upstream that target port is positioned to allow for this forwarding VLAN passes through, and forbids other
The upstream of VLAN passes through, it is achieved that filtration inspection based on forwarding VLAN, reduces generation
The probability of loop.
Those skilled in the art, after considering description and putting into practice invention disclosed herein, will readily occur to this
Other embodiment of invention.The application is intended to any modification, purposes or the adaptability of the present invention
Change, these modification, purposes or adaptations are followed the general principle of the present invention and include this
Bright undocumented common knowledge in the art or conventional techniques means.Description and embodiments only by
Being considered as exemplary, true scope and spirit of the invention are pointed out by claim below.
It should be appreciated that the invention is not limited in described above and illustrated in the accompanying drawings accurately
Structure, and various modifications and changes can carried out without departing from the scope.The scope of the present invention is only by institute
Attached claim limits.
Claims (10)
1. a data transfer control method, it is characterised in that including:
When determining that target port exists forwarding virtual LAN VLAN and the initialization of upstream
During different for VLAN situation, determine that described target port allows the forwarding of the upstream passed through
VLAN；
Close the VLAN for described target port that on the chip that described target port is corresponding, acquiescence is opened
Filter audit function, and described target port is positioned to allow for the upstream of described forwarding VLAN
Pass through, and forbid that the upstream of other VLAN passes through.
Method the most according to claim 1, it is characterised in that described described target port is arranged
For allowing the upstream of described forwarding VLAN to pass through, and forbid the upstream of other VLAN
Pass through, including:
Issue first data transmission to the chip that described target port is corresponding and control rule and the transmission of the second data
Controlling rule, described first data transmission controls rule for indicating the chip that described target port is corresponding to lose
Abandoning the upstream that described target port receives, described second Data Transmission Controlling rule is used for indicating
The chip that described target port is corresponding allows the upstream of described forwarding VLAN to pass through；Wherein, institute
State first data transmission and control the priority of rule less than described second Data Transmission Controlling rule.
Method the most according to claim 1, it is characterised in that described determine target port exist on
The situation that the forwarding VLAN of row data stream is different from initializing VLAN, including:
When determining that target port is deployed with VLAN mapping business, determine that target port exists upstream data
The situation that the forwarding VLAN of stream is different from initializing VLAN；
Described determine that described target port allows the forwarding VLAN of upstream passed through, including:
VLAN after the mapping include VLAN mapping ruler corresponding for described target port is defined as
Described target port allows the forwarding VLAN of the upstream passed through.
Method the most according to claim 3, it is characterised in that described method also includes:
When described target port receives target upstream, according in described target upstream
The VLAN mark ID carried mates the VLAN mapping ruler that described target port is corresponding；
If the match is successful, according to described VLAN mapping ruler, described target upstream is carried out
VLAN ID replace, and according to replace after VLAN ID determine whether VLAN ID replace after
Target upstream passes through.
Method the most according to claim 4, it is characterised in that described method also includes:
If mating unsuccessful, then determine according to the VLAN ID carried in described target upstream and be
No permission described target upstream passes through.
6. a data transfer controller, it is characterised in that including:
Determine unit, for when determining that target port exists the forwarding VLAN of upstream
VLAN, from when initializing the different situation of VLAN, determines that described target port allows to pass through up
The forwarding VLAN of data stream；
Control unit, for close on the chip that described target port is corresponding that acquiescence opens for described mesh
The VLAN of mark port filters audit function, and described target port is positioned to allow for described forwarding
The upstream of VLAN passes through, and forbids that the upstream of other VLAN passes through.
Device the most according to claim 6, it is characterised in that
Described control unit, issues first data transmission specifically for the chip corresponding to described target port
Controlling rule and the second Data Transmission Controlling rule, described first data transmission controls rule and is used for indicating institute
State chip corresponding to target port and abandon the upstream that described target port receives, described second number
Rule is controlled for indicating the chip that described target port is corresponding to allow described forwarding VLAN's according to transmission
Row data circulated；Wherein, described first data transmission controls the priority of rule less than described second number
Rule is controlled according to transmission.
Device the most according to claim 6, it is characterised in that
Described determine unit, specifically for when determine target port be deployed with VLAN map business time, really
There is the situation that the forwarding VLAN of upstream is different from initializing VLAN in the port that sets the goal；By institute
State the VLAN after the mapping that VLAN mapping ruler corresponding to target port includes and be defined as described target
Port allows the forwarding VLAN of the upstream passed through.
Device the most according to claim 8, it is characterised in that described device also includes:
Receive unit, be used for receiving target upstream；
Matching unit, for receiving target upstream when described reception unit from described target port
Time, the VLAN mark ID according to carrying in described target upstream mates described target port pair
The VLAN mapping ruler answered；
Map unit, if for the match is successful, up to described target according to described VLAN mapping ruler
Data stream carries out VLAN ID replacement；
Described control unit, is additionally operable to determine whether VLAN ID according to the VLAN ID after replacing
Target upstream after replacement passes through.
Device the most according to claim 9, it is characterised in that
Described control unit, if being additionally operable to mate unsuccessful, then takes according in described target upstream
The VLAN ID of band determines whether that described target upstream passes through.
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