CN108011828A - A kind of multicast switching method, device, core layer switch and storage medium - Google Patents
A kind of multicast switching method, device, core layer switch and storage medium Download PDFInfo
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- CN108011828A CN108011828A CN201711282821.9A CN201711282821A CN108011828A CN 108011828 A CN108011828 A CN 108011828A CN 201711282821 A CN201711282821 A CN 201711282821A CN 108011828 A CN108011828 A CN 108011828A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/16—Multipoint routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/02—Topology update or discovery
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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
- H04L45/22—Alternate routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/74—Address processing for routing
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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]
Abstract
The invention discloses a kind of multicast switching method, device, core layer switch and storage medium, the described method includes：When the first core layer switch in standby role receives the current multicast message that source access layer switches are sent, the software register pre-saved is updated according to the current multicast message；Wherein, the outlet VLAN of each software list item is not sky in the software register；When the first core layer switch determines that its own corresponding interchanger role is switched to primary role by standby role, hardware list is configured according to the software register；When the first core layer switch finds the corresponding hardware table item of the current multicast message in the hardware list, the current multicast message is forwarded to by target access layer switch according to the corresponding hardware table item of the current multicast message.Multicast switching time is shorter, and multicast switch speed is very fast.
Description
Technical field
The present embodiments relate to network communication technology field, more particularly to a kind of multicast switching method, device, core layer
Interchanger and storage medium.
Background technology
Multicast is widely used in IP (internet protocol) network, is mainly used for point-to-multipoint communication pattern, and wide
Broadcast and compare, multicast has a clear superiority in terms of bandwidth occupancy, server load and network load.Multicast routing protocol is IP network
The route test agreement of multicast message forwarding is realized in network third layer.The function of multicast routing protocol is the forwarding for multicast message
Routing iinformation is provided, that is, which direction received multicast message should be forwarded to forwarding engine explanation.It is common at present
IP multicast routing protocols have three types：DVMRP (Distance Vector Multicast Routing Protocol,
Distance vector multicast routing protocol), PIM-SM (Protocol Independent Multicast-Sparse Mode, agreement
The sparse mode of independent multicast Routing Protocol) and PIM-DM (Protocol Independent Multicast-Dense
Mode, the dense mode of Protocol Independent Multicast Routing Protocol).
The PIM-DM is a kind of multicast routing protocol unrelated with unicast routing protocol, it is independent of specific
Unicast routing protocol, is a kind of multicast routing protocol of dense mode, is relatively specific for the densely distributed network of receiving station.
PIM-DM is generally used for the situation table for having substantial amounts of receiving terminal in some multicast group, these receiving terminals are distributed than comparatively dense, multicast
The traffic is bigger.PIM-DM uses the pattern for pushing away (Push), and multicast message is sent by multicast source, and by connecting multicast source
The network equipment sends multicast message to all interfaces for being configured with PIM-DM, then again by checking whether network end-point has reception
Person carrys out the upstream network equipment and sends prune packet, and the network equipment is transmitted to stop follow-up multicast message.Specifically, net
Network equipment is right according to (S, the G) of multicast message, i.e., the source IP address of multicast message and purpose IP address calculate outer outgoing interface；If
The outer outgoing interface calculated is not sky, then to (S, the G) to establishing the list item of an outer outgoing interface, and by the multicast message by
The outer outgoing interface forwarding；If the outer outgoing interface calculated is sky, upstream neighbours send a prune packet, notify upstream
Neighbours after Upstream Interface receives prune packet, do not cut again to multicast message of this interface forwarding from (S, G) this is sent
The interface flag of branch message is beta pruning state, this process is known as " flood-beta pruning ".
Fig. 1 realizes flow diagram for multicast switching method in the prior art.As shown in Figure 1, J05 hands over for source access layer
Change planes, J06 is target access layer switch；H01 is the first core layer switch, and H02 is the second core layer switch；Wherein,
The interchanger role of first core layer switch H01 is primary role；The interchanger role of second core layer switch H02 is standby
Use role.When the first core layer switch H01 is powered on, the flow trace of current multicast message is：J05—>H01—>J06；
When electricity under the first core layer switch H01, the flow trace of current multicast message is：J05—>H02—>J06.Specifically,
When the second core layer switch H02 determines that its own corresponding interchanger role is switched to primary role by standby role, the
Two core layer switch H02 need to create the corresponding software list item of a current multicast message, then the second core layer switch
H02 determines the corresponding hardware table item of current multicast message, the second last core according to the corresponding software list item of current multicast message
Current multicast message is forwarded to target access layer switch by layer switch H02 according to the corresponding hardware table item of current multicast message
J06。
In the implementation of the present invention, inventor has found that at least there are the following problems in the prior art：
In existing multicast switching method, when the first core layer switch determine its own corresponding interchanger role by
When standby role is switched to primary role, the first core layer switch needs to create one in the software register locally preserved currently
The corresponding software list item of multicast message, and the first core layer switch establishes current multicast message pair in the software register locally preserved
The software list item answered needs to undergo the process of one " flood-beta pruning ", and therefore, multicast switching time is longer, multicast switch speed
It is slower.
The content of the invention
The present invention provides a kind of multicast switching method based on PIM-DM agreements, device, core layer switch and storage and is situated between
Matter, multicast switching time is shorter, and multicast switch speed is very fast.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
In a first aspect, an embodiment of the present invention provides a kind of multicast switching method, the described method includes：
The first core layer switch in standby role receives the current multicast message that source access layer switches are sent
When, the software register pre-saved is updated according to the current multicast message；Wherein, each software list item goes out in the software register
Mouth VLAN is not sky；
When the first core layer switch, to determine that its own corresponding interchanger role is switched to by standby role primary
During role, hardware list is configured according to the software register；
When the first core layer switch finds the corresponding hardware of the current multicast message in the hardware list
During list item, the current multicast message is forwarded to by target access layer according to the corresponding hardware table item of the current multicast message and is handed over
Change planes.
In the above-described embodiments, the first core layer switch is pre-saved according to current multicast message renewal
Software register, including：
The first core layer switch searches the corresponding software list item of the current multicast message in the software register；
When the first core layer switch, to find the current multicast message in the software list item corresponding soft
During part list item, the first core layer switch is abandoned the current multicast message；
Corresponded to when the first core layer switch does not find the current multicast message in the software list item
Software list item when, the first core layer switch creates the current multicast message in the software list item and corresponds to
Software list item after, the current multicast message is abandoned.
In the above-described embodiments, after the software register pre-saved according to current multicast message renewal, institute
The method of stating further includes：
First core switch by the source IP address of each software list item, purpose IP address in the software register, enter
Mouth VLAN is added in the hardware list in the source IP address of each hardware table item, purpose IP address, ingress VLAN；Wherein, respectively
The outlet VLAN of a hardware table item is sky.
In the above-described embodiments, the first core layer switch determines its own corresponding interchanger role by spare angle
Color is switched to primary role, including：
The first core layer switch obtains the first priority of the first core layer switch according to predetermined period
With the second priority of the second core layer switch；
When the first priority of the first core layer switch is more than the second preferential of the second core layer switch
During level, the first core layer switch determines that its own corresponding interchanger role is switched to the master by the standby role
Use role.
In the above-described embodiments, the method further includes：
When re-powering work after electricity under the second core layer exchange fault in primary role, obtained according to predetermined period
Take the first priority of the first core layer switch and the second priority of the second core layer switch；
When the first priority of the first core layer switch is more than the second preferential of the second core layer switch
During level, the second core layer switch determines that its own corresponding interchanger role is the standby role.
Second aspect, the embodiment of the present invention additionally provide a kind of multicast switching device, and described device includes：Updating block,
Dispensing unit and retransmission unit；Wherein,
The updating block, for receiving the current multicast message of source access layer switches transmission in standby role
When；The software register pre-saved according to current multicast message renewal；Wherein, each software list item goes out in the software register
Mouth VLAN is not sky；
The dispensing unit, for determining its own corresponding interchanger role by standby when the first core layer switch
When with role switching being primary role, hardware list is configured according to the software register；
The retransmission unit, for finding described current group in the hardware list when the first core layer switch
When reporting literary corresponding hardware table item, the current multicast message is turned according to the current multicast message corresponding hardware table item
It is sent to target access layer switch.
In the above-described embodiments, the updating block, specifically for searching the current multicast report in the software register
The corresponding software list item of text；, will when finding the corresponding software list item of the current multicast message in the software list item
The current multicast message is abandoned；It is corresponding soft when not finding the current multicast message in the software list item
During part list item, after the corresponding software list item of the current multicast message is created in the software list item, will it is described currently
Multicast message is abandoned.
In the above-described embodiments, the dispensing unit, is additionally operable to by the source IP of each software list item in the software register
Location, purpose IP address, ingress VLAN are added to the source IP address of each hardware table item in the hardware list, purpose IP address, enter
In mouth VLAN；Wherein, the outlet VLAN of each hardware table item is sky.
In the above-described embodiments, the dispensing unit, is additionally operable to obtain the first core layer exchange according to predetermined period
Second priority of the first priority of machine and the second core layer switch；First when the first core layer switch is preferential
When level is more than the second priority of the second core layer switch, determine its own corresponding interchanger role by described spare
Role switching is the primary role.
The third aspect, the embodiment of the present invention additionally provide a kind of core layer switch, it is characterised in that including：
At least one processor；And
The memory being connected with least one processor communication；Wherein,
The memory storage has the instruction that can be performed by least one processor, and described instruction is by described at least one
A processor performs, so that at least one processor is able to carry out the method described in any of the above-described embodiment.
Fourth aspect, the embodiment of the present invention additionally provide a kind of storage medium, are stored with computer executable instructions, described
Computer executable instructions are used to perform the method as described in above-mentioned any embodiment.
The embodiment of the present invention proposes a kind of multicast switching method, device, core layer switch and storage medium.In standby
When receiving the current multicast message that source access layer switches are sent with the first core layer switch of role, first according to current group
Report the software register that text renewal pre-saves；Then when the first core layer switch determine its own corresponding interchanger role by
When standby role is switched to primary role, hardware list can be configured according to software register；When the first core layer switch is in hardware list
In when finding the corresponding hardware table item of current multicast message, can will be current according to the corresponding hardware table item of current multicast message
Multicast message is forwarded to target access layer switch.That is, in the technical solution that the embodiment of the present invention proposes, the first core
Central layer interchanger can be independently calculated with outlet according to hardware list of the software register configuration with transfer capability pre-saved
The software register of VLAN and beta pruning VLAN；When the first core layer switch determines its own corresponding interchanger role by standby role
When being switched to primary role, the first core layer switch can synchronously configuration has transfer capability according to the software register locally preserved
Hardware list, and the first core layer switch need not then create a current multicast message pair in the software register locally preserved
The software list item answered.Therefore, the first core layer switch more rapidly can be switched to primary role by standby role.And existing
Multicast switching method in, when the first core layer switch determines that its own corresponding interchanger role is switched to by standby role
During primary role, the first core layer switch needs a newly-built current multicast message in the software register locally preserved corresponding
Software list item, and the first core layer switch establishes the corresponding software list item of current multicast message in the software register locally preserved
Need the process of experience one " flood-beta pruning ".Therefore, compared to the prior art, the multicast switching that the embodiment of the present invention proposes
Method, apparatus, core layer switch and storage medium, multicast switching time is shorter, and multicast switch speed is very fast；Also, this hair
The technical solution of bright embodiment realize it is simple and convenient, easy to popularize, the scope of application is wider.
Brief description of the drawings
Fig. 1 realizes flow diagram for multicast switching method in the prior art；
Fig. 2 is that multicast switching method realizes flow diagram in the embodiment of the present invention；
Fig. 3 is the composition structure diagram of hardware table item in the embodiment of the present invention；
Fig. 4 is the composition structure diagram of software list item in the embodiment of the present invention；
Fig. 5 is the composition structure diagram of multicast switching device in the embodiment of the present invention.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that in order to just
It illustrate only part related to the present invention rather than entire infrastructure in description, attached drawing.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body is either operated to be distinguished with another entity or operation, without necessarily requiring or implying between these entities or operation
There are any actual relationship or order.For example, in the first core layer switch and the second core layer switch " the
One " is used for the core layer switch that to distinguish two different with " second ".
Technical solution provided in an embodiment of the present invention, is not only adapted to the scene shown in Fig. 1, is further adapted to need active and standby cut
The scene changed：In Fig. 1, between core layer equipment, core layer equipment and access layer equipment connected using trunk mouthful.User equipment
It is connected in the access layer equipment with two layers of transfer capability.Two core layer equipments in active-standby mode open PIM-DM associations
View, VRRP (Virtual Router RedundancyProtocol, Virtual Router Redundacy Protocol) agreements and MSTP agreements, and
With three layers of transfer capability.Two core layer equipment patterns are active-standby mode in Fig. 1, i.e. two core layer equipments only have one to set
Standby forwarding, another core layer equipment play the role of redundancy backup.
Fig. 2 is that multicast switching method realizes flow diagram in the embodiment of the present invention.As shown in Fig. 2, multicast switching side
Method may comprise steps of：
Step 201, the first core layer switch in standby role receive the current of source access layer switches transmission
During multicast message, the software register pre-saved is updated according to current multicast message.
In a specific embodiment of the present invention, the interchanger role of the first core layer switch can be primary role；The
The interchanger role of one core layer switch can also be standby role.In addition, the interchanger role of the second core layer switch
It can be primary role；The interchanger role of second core layer switch can also be standby role.When the first core layer exchanges
When the interchanger role of machine is primary role, the first core layer switch can receive current group that source access layer switches are sent
Report text；When the interchanger role of the first core layer switch is standby role, the first core layer switch can also receive
The current multicast message that source access layer switches are sent.Similarly, when the interchanger role of the second core layer switch is primary
During role, the second core layer switch can receive the current multicast message that source access layer switches are sent；When the second core layer
When the interchanger role of interchanger is standby role, the second core layer switch can also receive what source access layer switches were sent
Current multicast message.
Specifically, in a specific embodiment of the present invention, the first core layer switch in standby role receives source
During the current multicast message that access layer switches are sent, the first core layer switch can update advance according to current multicast message
The software register of preservation.Specifically, the first core layer switch can search the corresponding software of current multicast message in software register
List item；When the first core layer switch finds the corresponding software list item of current multicast message in software list item, the first core
Central layer interchanger can be abandoned current multicast message；When the first core layer switch is not found in software list item
During the corresponding software list item of current multicast message, the first core layer switch can create a current multicast in software list item
After the corresponding software list item of message, current multicast message is abandoned.That is, determined in the first core layer switch
Before its own corresponding interchanger role is switched to primary role by standby role, each outlet VLAN is sky in hardware list,
Therefore when the first core layer switch finds the corresponding software list item of current multicast message in software list item can directly by
Current multicast message is abandoned；Alternatively, when the first core layer switch does not find current multicast report in software list item
During literary corresponding software list item, it is corresponding that the first core layer switch can create a current multicast message in software list item
After software list item, current multicast message is abandoned.
It is preferred that in a specific embodiment of the present invention, the first core layer switch is updated according to current multicast message
After the software register pre-saved, the first core layer switch can be by source IP address, the mesh of each software list item in software register
IP address, ingress VLAN is added in hardware list in the source IP address of each hardware table item, purpose IP address, ingress VLAN；
Wherein, the outlet VLAN of each hardware table item is sky.Alternatively, the first core layer switch can also be by each hardware in hardware list
Source IP address, purpose IP address, ingress VLAN and the outlet VLAN of list item are each configured to sky.
It is preferred that in a specific embodiment of the present invention, between the first core layer switch and the second core layer switch
HELLO messages and ASSERT messages are no longer sent mutually, it is ensured that the first core layer switch and the second core layer switch
Independently calculate the software register of itself, and the software register that calculates of the first core layer switch and the second core layer switch calculate
The software register gone out is identical.In this way, in the situation of the first core layer switch and the second equal working stability of core layer switch
Under, when the first interchanger determines that the interchanger role of its own is switched to primary role by standby role, the first core layer is handed over
Hardware list can be configured according to software register by changing planes.Specifically, if the source IP address of each hardware table item, mesh in hardware list at this time
IP address, ingress VLAN and outlet VLAN it is empty, the first core layer switch can be by each software list item in software register
Source IP address, purpose IP address, ingress VLAN and outlet VLAN are added to the source IP address of each hardware table item, mesh in hardware list
IP address, ingress VLAN and outlet VLAN.If the source IP address of each hardware table item, destination IP in hardware list at this time
Location, ingress VLAN for sky, and the outlet VLAN of only each hardware table item for sky, then the first core layer switch only need by
The outlet VLAN of each software list item is added in the outlet VLAN of each hardware table item in hardware list in software register.So when
When one core layer switch finds the corresponding hardware table item of current multicast message in hardware list, the first core layer switch can
Current multicast message is forwarded to target access layer switch according to current multicast message corresponding hardware table item, so as to
Shorten multicast switching time, improve multicast switch speed.
Step 202, determine that its own corresponding interchanger role is switched to by standby role when the first core layer switch
During primary role, hardware list is configured according to software register.
In a specific embodiment of the present invention, the first core layer switch is receiving working as source access layer switches transmission
After preceding multicast message, the first core layer switch can according to its own corresponding interchanger role to current multicast message into
The different processing of row.Specifically, when the interchanger role of the first core layer switch is primary role, the first core layer exchanges
Current multicast message can be forwarded to by machine according to the corresponding hardware table item of current multicast message；When the first core layer switch
Interchanger role when being standby role, the first core layer switch can will according to the corresponding hardware table item of current multicast message
Current multicast message is abandoned.Similarly, the second core layer switch is receiving the current of source access layer switches transmission
After multicast message, the second core layer switch can also according to its own corresponding interchanger role to current multicast message into
The different processing of row.Specifically, when the interchanger role of the second core layer switch is primary role, the second core layer exchanges
Current multicast message can be forwarded to by machine according to the corresponding hardware table item of current multicast message；When the second core layer switch
Interchanger role when being standby role, the second core layer switch can will according to the corresponding hardware table item of current multicast message
Current multicast message is abandoned.
Specifically, in a specific embodiment of the present invention, when the interchanger role of the first core layer switch is primary angle
During color, the first core layer switch is after the current multicast message that source access layer switches are sent is received, the first core layer
Interchanger can first search the corresponding hardware table item of current multicast message in hardware list；When the first core layer switch is in hardware
When the corresponding hardware table item of current multicast message is found in table, the first core layer switch can be according to current group found
Report text corresponding hardware table item and current multicast message is forwarded to target access layer switch.When the first core layer switch exists
When the corresponding hardware table item of current multicast message is not found in hardware list, the first core layer switch can be in software register
Search the corresponding software list item of current multicast message；When the first core layer switch finds current multicast message in software register
During corresponding software list item, the first core layer switch can give birth to according to the corresponding software list item of the current multicast message found
Into the corresponding hardware table item of current multicast message, then the first core layer switch can be corresponding hard according to current multicast message
Current multicast message is forwarded to target access layer switch by part list item.When the first core layer switch is not looked into software register
When finding the corresponding software list item of current multicast message, the first core layer switch can create one current group in software register
The corresponding software list item of text is reported, the first core layer switch can be according to the newly-built corresponding software of current multicast message at this time
The corresponding hardware table item of list item generation current multicast message, then the first core layer switch can be according to current multicast message pair
Current multicast message is forwarded to target access layer switch by the hardware table item answered.
Specifically, in a specific embodiment of the present invention, the storage organization of hardware list can be as described in Table 1：
| Hardware table item 1 | Source IP address 1 | Purpose IP address 1 | Ingress VLAN 1 | Export VLAN1 |
| Hardware table item 2 | Source IP address 2 | Purpose IP address 2 | Ingress VLAN 2 | Export VLAN2 |
| … | … | … | … | … |
| Hardware table item M | Source IP address M | Purpose IP address M | Ingress VLAN M | Export VLAN M |
Table 1
In table 1 above, hardware list can include M hardware table item, be respectively：Hardware table item 1, hardware table item 2 ...,
Hardware table item M；Wherein, M is the natural number more than or equal to 1.Hardware table item 1 can include：Source IP address 1, purpose IP address 1,
Ingress VLAN 1 and outlet VLAN1；Hardware table item 2 can include：Source IP address 2, purpose IP address 2, ingress VLAN 2 and outlet
VLAN2；…；Hardware table item M can include：Source IP address M, purpose IP address M, ingress VLAN M and outlet VLAN M.Need
Illustrate, in each hardware table item, outlet VLAN there can be one, it is possibility to have multiple.For example, in hardware table item 1,
Outlet VLAN1 can have one, it is possibility to have multiple.
Fig. 3 is the composition structure diagram of hardware table item in the embodiment of the present invention.As shown in figure 3, hardware table item can wrap
Include：Source IP address, purpose IP address, ingress VLAN and outlet VLAN.In a specific embodiment of the present invention, the first core layer is handed over
Change planes when the corresponding hardware table item of current multicast message is searched in hardware list, the first core layer switch can be according to current group
Report source IP address, purpose IP address and the ingress VLAN of text hardware table item 1, hardware table item 2 ..., search in hardware table item M
The corresponding hardware table item of current multicast message.If the source IP address of current multicast message, purpose IP address and ingress VLAN and
Hardware table item 1, hardware table item 2 ..., in hardware table item M any one hardware table item source IP address, purpose IP address and entrance
VLAN is identical, then the hardware table item is determined as the corresponding hardware table item of current multicast message by the first core layer switch.
Specifically, in a specific embodiment of the present invention, the storage organization of software register can be as described in Table 2：
| Software list item 1 | Source IP address 1 | Purpose IP address 1 | Ingress VLAN 1 | Export VLAN1 | Beta pruning VLAN1 |
| Software list item 2 | Source IP address 2 | Purpose IP address 2 | Ingress VLAN 2 | Export VLAN2 | Beta pruning VLAN2 |
| … | … | … | … | … | … |
| Software list item N | Source IP address N | Purpose IP address N | Ingress VLAN N | Export VLAN N | Beta pruning VLAN N |
Table 2
In above-mentioned table 2, software register can include N number of software list item, be respectively：Software list item 1, software list item 2 ...,
Software list item N；Wherein, N is the natural number more than or equal to M.Software list item 1 can include：Source IP address 1, purpose IP address 1,
Ingress VLAN 1, outlet VLAN1 and beta pruning VLAN1；Software list item 2 can include：Source IP address 2, purpose IP address 2, entrance
VLAN2, outlet VLAN2 and beta pruning VLAN2；…；Software list item N can include：Source IP address N, purpose IP address N, entrance
VLAN N, outlet VLAN N and beta pruning VLAN N.It should be noted that in each software list item, outlet VLAN can have one
It is a, it is possibility to have multiple；In addition, beta pruning VLAN can have one, it is possibility to have multiple.For example, in software list item 1, outlet
VLAN1 can have one, it is possibility to have multiple；Beta pruning VLAN1 can have one, it is possibility to have multiple.
Fig. 4 is the composition structure diagram of software list item in the embodiment of the present invention.As shown in figure 4, software list item can wrap
Include：Source IP address, purpose IP address, ingress VLAN, outlet VLAN and beta pruning VLAN.In a specific embodiment of the present invention,
When one core layer switch searches the corresponding software list item of current multicast message in software register, the first core layer switch can be with
According to the source IP address of current multicast message, purpose IP address and ingress VLAN software list item 1, software list item 2 ..., software
The corresponding software list item of current multicast message is searched in list item N.If the source IP address of current multicast message, purpose IP address and
Ingress VLAN and software list item 1, software list item 2 ..., the source IP address of any one software list item, destination IP in software list item N
Address is identical with ingress VLAN, then the software list item is determined as the corresponding software of current multicast message by the first core layer switch
List item.
Specifically, in a specific embodiment of the present invention, when the interchanger role of the first core layer switch is spare angle
During color, the first core layer switch is after the current multicast message that source access layer switches are sent is received, the first core layer
Interchanger searches the corresponding software list item of current multicast message in software register；When the first core layer switch is in software list item
When finding the corresponding software list item of current multicast message, the first core layer switch directly can carry out current multicast message
Abandon；When the first core layer switch does not find the corresponding software list item of current multicast message in software list item,
, then will be current after one core layer switch can create the corresponding software list item of a current multicast message in software list item
Multicast message is abandoned.That is, the first core layer switch in standby role receives source access layer switches
During the current multicast message of transmission, since the outlet VLAN of each hardware table item in hardware list is sky, the first core
Layer switch can only be lost current multicast message after the current multicast message that source access layer switches are sent is received
Abandon.
Specifically, based on determining that its own corresponding interchanger role switches by standby role when the first core layer switch
During with role, the first core layer switch can configure hardware list according to software register.Specifically, specifically, if hardware at this time
The source IP address of each hardware table item, purpose IP address, ingress VLAN and outlet VLAN are empty in table, the first core layer switch
The source IP address of each software list item, purpose IP address, ingress VLAN and outlet VLAN in software register can be added to hardware
The source IP address of each hardware table item, purpose IP address, ingress VLAN and outlet VLAN in table.It is if each in hardware list at this time
Source IP address, purpose IP address, the ingress VLAN of hardware table item are not sky, and the outlet VLAN of only each hardware table item is
Sky, then the first core layer switch the outlet VLAN of each software list item in software register need to be only added to each hard in hardware list
In the outlet VLAN of part list item.So when the first core layer switch, that current multicast message is found in hardware list is corresponding hard
During part list item, the first core layer switch can forward current multicast message according to the corresponding hardware table item of current multicast message
To target access layer switch, so as to shorten multicast switching time, multicast switch speed is improved.
Step 203, find the corresponding hardware table item of current multicast message when the first core layer switch in hardware list
When, current multicast message is forwarded to by target access layer switch according to the corresponding hardware table item of current multicast message.
In a specific embodiment of the present invention, when the first core layer switch finds current multicast message in hardware list
During corresponding hardware table item, the first core layer switch can be according to the corresponding hardware table item of current multicast message by current multicast
Message is forwarded to target access layer switch；When the first core layer switch does not find current multicast message in hardware list
During corresponding hardware table item, the first core layer switch can search the corresponding software register of current multicast message in software register
, when the first core layer switch finds the corresponding software list item of current multicast message in software register, the first core layer
Interchanger can be according to the corresponding hardware table item of the corresponding software list item generation current multicast message of current multicast message, Ran Hougen
Current multicast message is forwarded to target access layer switch according to current multicast message corresponding hardware table item；When the first core layer
When interchanger does not find the corresponding software list item of current multicast message in software register, the first core layer switch can be
After creating the corresponding software list item of a current multicast message in software register, given birth to according to the corresponding software list item of current multicast message
Into the corresponding hardware table item of current multicast message, then according to the corresponding hardware table item of current multicast message by current multicast message
It is forwarded to target access layer switch.
It is preferred that in a specific embodiment of the present invention, the first core layer switch can obtain the according to predetermined period
Second priority of the first priority of one core layer switch and the second core layer switch；When the first core layer switch
When first priority is more than the second priority of the second core layer switch, the first core layer switch can determine that its own is right
The interchanger role answered is switched to primary role by standby role.Specifically, the second core layer switch in primary role
When re-powering work under failure after electricity, the second core layer switch can also obtain the first core layer according to predetermined period and exchange
Second priority of the first priority of machine and the second core layer switch；When the first priority of the first core layer switch is big
When the second priority of the second core layer switch, the second core layer switch determines that its own corresponding interchanger role is
Standby role.For example, when the interchanger role of the first core layer switch is standby role, the first core layer can be exchanged
First priority of machine is configured to 90；, can be by second when the interchanger role of the second core layer switch is primary role
Second priority of core layer switch is configured to 100.If the first core layer switch determines the interchanger role of its own
When being switched to primary role by standby role, the second priority of the first core layer switch can be configured to 254.Herein it
Afterwards, when the second core layer switch re-powers, the second core layer can obtain the first core layer according to predetermined period and exchange
Second priority of the first priority of machine and the second core layer switch, when the first priority of the first core layer switch is big
When the second priority of the second core layer switch, the second core layer switch then will not be by its own corresponding interchanger angle
Color is by standby role switchback to primary role.That is, when the second core layer switch re-powers, due to the second core
Second priority 100 of layer switch is less than the first priority 254 of the first core layer switch, and therefore, the second core layer is handed over
Change planes and determine that its own corresponding interchanger role is standby role, can not between such first interchanger and second switch
The protocol massages for role's switchback are forwarded again, can not only save flow, and are also prevented from the second core layer switch
Loss by standby role switchback to data message during primary role, ensures that the first core layer for being now in primary role exchanges
Machine is more stablized.
Multicast switching method provided in an embodiment of the present invention, the first core layer switch in standby role receive source
During the current multicast message that access layer switches are sent, the software register pre-saved is first updated according to current multicast message；Then
When the first core layer switch determines that its own corresponding interchanger role is switched to primary role by standby role, Ke Yigen
Hardware list is configured according to software register；When the first core layer switch finds the corresponding hardware list of current multicast message in hardware list
Xiang Shi, can be forwarded to target access layer switch according to the corresponding hardware table item of current multicast message by current multicast message.
That is, in the technical solution that the embodiment of the present invention proposes, the first core layer switch can be soft according to what is pre-saved
Hardware list of the part table configuration with transfer capability independently calculates the software register with outlet VLAN and beta pruning VLAN；When the first core
When layer switch determines that its own corresponding interchanger role is switched to primary role by standby role, the first core layer switch
Hardware list with transfer capability can synchronously be configured according to the software register locally preserved, and the first core layer switch is then not required to
The corresponding software list item of a current multicast message is created in the software register locally preserved.Therefore, the first core layer exchanges
Machine more rapidly can be switched to primary role by standby role.And in existing multicast switching method, when the first core layer is handed over
Change planes when determining that its own corresponding interchanger role is switched to primary role by standby role, the first core layer switch needs
The corresponding software list item of a current multicast message is created in the software register locally preserved, and the first core layer switch is at this
The corresponding software list item of current multicast message is established in the software register that ground preserves to be needed to undergo the process of one " flood-beta pruning ".
Therefore, compared to the prior art, the multicast switching method that the embodiment of the present invention proposes, multicast switching time is shorter, multicast switching
Speed；Also, the technical solution of the embodiment of the present invention realize it is simple and convenient, easy to popularize, the scope of application is wider.
Fig. 5 is the composition structure diagram of multicast switching device in the embodiment of the present invention.As shown in figure 5, described device bag
Include：Updating block 501, dispensing unit 502 and retransmission unit 503；Wherein,
The updating block 501, for receiving the current multicast report of source access layer switches transmission in standby role
Wen Shi；The software register pre-saved according to current multicast message renewal；Wherein, each software list item in the software register
It is not sky to export VLAN；
The dispensing unit 502, for determining its own corresponding interchanger role when the first core layer switch
When being switched to primary role by standby role, hardware list is configured according to the software register；
The retransmission unit 503, for finding described work as in the hardware list when the first core layer switch
During the corresponding hardware table item of preceding multicast message, according to the corresponding hardware table item of the current multicast message by the current multicast report
Text is forwarded to target access layer switch.
Further, the updating block 501, specifically for searching the current multicast message pair in the software register
The software list item answered；When finding the corresponding software list item of the current multicast message in the software list item, will described in
Current multicast message is abandoned；When not finding the corresponding software register of the current multicast message in the software list item
Xiang Shi, after the corresponding software list item of the current multicast message is created in the software list item, by the current multicast
Message is abandoned.
Further, the dispensing unit 502, be additionally operable to by the source IP address of each software list item in the software register,
Purpose IP address, ingress VLAN are added to the source IP address of each hardware table item, purpose IP address, entrance in the hardware list
In VLAN；Wherein, the outlet VLAN of each hardware table item is sky.
Further, the dispensing unit 502, is additionally operable to obtain the first core layer switch according to predetermined period
Second priority of the first priority and the second core layer switch；When the first priority of the first core layer switch is big
When the second priority of the second core layer switch, determine its own corresponding interchanger role by the standby role
It is switched to the primary role.
The multicast switching device that the embodiment of the present invention proposes, the first core layer switch in standby role receive source
During the current multicast message that access layer switches are sent, the software register pre-saved is first updated according to current multicast message；Then
When the first core layer switch determines that its own corresponding interchanger role is switched to primary role by standby role, Ke Yigen
Hardware list is configured according to software register；When the first core layer switch finds the corresponding hardware list of current multicast message in hardware list
Xiang Shi, can be forwarded to target access layer switch according to the corresponding hardware table item of current multicast message by current multicast message.
That is, in the technical solution that the embodiment of the present invention proposes, the first core layer switch can be soft according to what is pre-saved
Hardware list of the part table configuration with transfer capability independently calculates the software register with outlet VLAN and beta pruning VLAN；When the first core
When layer switch determines that its own corresponding interchanger role is switched to primary role by standby role, the first core layer switch
Hardware list with transfer capability can synchronously be configured according to the software register locally preserved, and the first core layer switch is then not required to
The corresponding software list item of a current multicast message is created in the software register locally preserved.Therefore, the first core layer exchanges
Machine more rapidly can be switched to primary role by standby role.And in existing multicast switching method, when the first core layer is handed over
Change planes when determining that its own corresponding interchanger role is switched to primary role by standby role, the first core layer switch needs
The corresponding software list item of a current multicast message is created in the software register locally preserved, and the first core layer switch is at this
The corresponding software list item of current multicast message is established in the software register that ground preserves to be needed to undergo the process of one " flood-beta pruning ".
Therefore, compared to the prior art, the multicast switching device that the embodiment of the present invention proposes, multicast switching time is shorter, multicast switching
Speed；Also, the technical solution of the embodiment of the present invention realize it is simple and convenient, easy to popularize, the scope of application is wider.
The embodiment of the present invention also provides a kind of storage medium, is stored with computer executable instructions, and the computer can be held
Row instruction is used to perform the method described in any of the above-described embodiment.
The embodiment of the present invention additionally provides a kind of core layer switch, including：At least one processor；And with it is described extremely
The memory of few processor communication connection；Wherein, the memory storage, which has, to be performed by least one processor
Instruction, described instruction is performed by least one processor, so that at least one processor is able to carry out as above-mentioned
Method described in any embodiment.
Certainly, the storage medium for including computer executable instructions that the embodiment of the present invention is provided, its computer can be held
The method operation that row instruction is not limited to the described above, can also carry out in the authentication method that any embodiment of the present invention is provided
Relevant operation.
By the description above with respect to embodiment, it is apparent to those skilled in the art that, the present invention
It can be realized by software and required common hardware, naturally it is also possible to which by hardware realization, but the former is more in many cases
Good embodiment.Based on such understanding, what technical scheme substantially in other words contributed the prior art
Part can be embodied in the form of software product, which can be stored in computer-readable recording medium
In, floppy disk, read-only storage (Read-Only Memory, ROM), random access memory (Random such as computer
Access Memory, RAM), flash memory (FLASH), hard disk or CD etc., including some instructions are with so that a computer is set
Standby (can be personal computer, server, or network equipment etc.) performs the method described in each embodiment of the present invention.
It is worth noting that, in the embodiment of above-mentioned searcher, included unit and module are simply according to work(
Energy logic is divided, but is not limited to above-mentioned division, as long as corresponding function can be realized；In addition, each work(
The specific name of energy unit is also only to facilitate mutually distinguish, the protection domain being not intended to limit the invention.
Note that it above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although being carried out by above example to the present invention
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
It can include other more equivalent embodiments, and the scope of the present invention is determined by scope of the appended claims.
Claims (11)
- A kind of 1. multicast switching method, it is characterised in that the described method includes：When the first core layer switch in standby role receives the current multicast message that source access layer switches are sent, root The software register pre-saved according to current multicast message renewal；Wherein, in the software register each software list item outlet VLAN is not sky；When the first core layer switch determines that its own corresponding interchanger role is switched to primary role by standby role When, hardware list is configured according to the software register；When the first core layer switch finds the corresponding hardware table item of the current multicast message in the hardware list When, the current multicast message is forwarded to by target access layer according to the corresponding hardware table item of the current multicast message and is exchanged Machine.
- 2. according to the method described in claim 1, it is characterized in that, the first core layer switch is according to the current multicast The software register that message renewal pre-saves, including：The first core layer switch searches the corresponding software list item of the current multicast message in the software register；When the first core layer switch finds the corresponding software register of the current multicast message in the software list item Xiang Shi, the first core layer switch are abandoned the current multicast message；When the first core layer switch, not find the current multicast message in the software list item corresponding soft During part list item, it is corresponding soft that the first core layer switch creates a current multicast message in the software list item After part list item, the current multicast message is abandoned.
- 3. according to the method described in claim 1, it is characterized in that, protected in advance in described updated according to the current multicast message After the software register deposited, the method further includes：First core switch is by source IP address, purpose IP address, the entrance of each software list item in the software register VLAN is added in the hardware list in the source IP address of each hardware table item, purpose IP address, ingress VLAN；Wherein, it is each The outlet VLAN of hardware table item is sky.
- 4. according to the method described in claim 1, it is characterized in that, the first core layer switch determines that its own is corresponding Interchanger role is switched to primary role by standby role, including：The first core layer switch obtains the first priority and the of the first core layer switch according to predetermined period Second priority of two core layer switch；When the first priority of the first core layer switch is more than the second priority of the second core layer switch, The first core layer switch determines that its own corresponding interchanger role is switched to the primary angle by the standby role Color.
- 5. according to the method described in claim 1, it is characterized in that, the method further includes：When re-powering work after electricity under the second core layer exchange fault in primary role, institute is obtained according to predetermined period State the first priority of the first core layer switch and the second priority of the second core layer switch；When the first priority of the first core layer switch is more than the second priority of the second core layer switch, The second core layer switch determines that its own corresponding interchanger role is the standby role.
- 6. a kind of multicast switching device, it is characterised in that described device includes：Updating block, dispensing unit and retransmission unit；Its In,The updating block, during for receiving the current multicast message that source access layer switches are sent in standby role；Root The software register pre-saved according to current multicast message renewal；Wherein, in the software register each software list item outlet VLAN is not sky；The dispensing unit, for determining its own corresponding interchanger role by spare angle when the first core layer switch When color is switched to primary role, hardware list is configured according to the software register；The retransmission unit, for finding the current multicast report in the hardware list when the first core layer switch During literary corresponding hardware table item, the current multicast message is forwarded to according to the current multicast message corresponding hardware table item Target access layer switch.
- 7. device according to claim 6, it is characterised in that the updating block, specifically in the software register Search the corresponding software list item of the current multicast message；When finding the current multicast message pair in the software list item During the software list item answered, the current multicast message is abandoned；When not finding described work as in the software list item During the corresponding software list item of preceding multicast message, the corresponding software of the current multicast message is created in the software list item After list item, the current multicast message is abandoned.
- 8. device according to claim 6, it is characterised in that the dispensing unit, being additionally operable to will be each in the software register Source IP address, purpose IP address, the ingress VLAN of a software list item are added to the source IP of each hardware table item in the hardware list In address, purpose IP address, ingress VLAN；Wherein, the outlet VLAN of each hardware table item is sky.
- 9. device according to claim 6, it is characterised in that the dispensing unit, is additionally operable to obtain according to predetermined period Second priority of the first priority of the first core layer switch and the second core layer switch；When first core When first priority of layer switch is more than the second priority of the second core layer switch, its own corresponding friendship is determined The role that changes planes is switched to the primary role by the standby role.
- A kind of 10. core layer switch, it is characterised in that including：At least one processor；AndThe memory being connected with least one processor communication；Wherein,The memory storage has the instruction that can be performed by least one processor, and described instruction is by least one place Manage device to perform, so that at least one processor is able to carry out the method as described in claim 1 to 5 any claim.
- 11. a kind of storage medium, is stored with computer executable instructions, it is characterised in that the computer executable instructions are used In method of the execution as described in claim 1 to 5 any claim.
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