CN106656722A - VXLAN multicasting method and device - Google Patents
VXLAN multicasting method and device Download PDFInfo
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- CN106656722A CN106656722A CN201611141814.2A CN201611141814A CN106656722A CN 106656722 A CN106656722 A CN 106656722A CN 201611141814 A CN201611141814 A CN 201611141814A CN 106656722 A CN106656722 A CN 106656722A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/25—Mapping addresses of the same type
- H04L61/2503—Translation of Internet protocol [IP] addresses
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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]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/20—Support for services
- H04L49/201—Multicast operation; Broadcast operation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/30—Peripheral units, e.g. input or output ports
- H04L49/3009—Header conversion, routing tables or routing tags
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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]
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- Computer Networks & Wireless Communication (AREA)
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- Computer Security & Cryptography (AREA)
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Abstract
The invention provides a VXLAN (Virtual Local Area Network) multicasting method and device applied to a sending end VTEP device. The method includes steps that: after joining a multicast group, a target VXLAN of the sending end VTEP device establishes neighborhood relations with remote end VTEP (VXLAN Tunneling End Point) devices; after the neighborhood relations are established, a BUM message is sent, based on a head end duplication mode, to the remote end VTEP devices according to a mapping relation between a stored VNI of the target VXLAN and IP addresses of the remote end devices after receiving the user-side BUM message of the target VXLAN. The invention solves a problem that forwarding performance is affected duo to excessive work load of a core device when a large amount of BUM messages flood in a VXLAN network.
Description
Technical field
The application is related to communication technical field, more particularly to a kind of VXLAN method of multicasting and device.
Background technology
With the fast development of cloud computing, the virtualization degree more and more higher of data center, the requirement to physical network
Increasingly harsher, such as TOR switches need to support big specification mac address table；4094 VLAN (Virtual Local Area
Network, VLAN) magnanimity virtual machine cannot be divided；Need Network Isolation of support multi-tenant etc..Exactly these demands
So that stacking network technology VXLAN (Virtual Extensible Local Area Network, virtual expansible LAN)
Arise at the historic moment.
In actual applications, VTEP (VXLAN Tunneling End Point, the VXLAN tunnels end of multicast group is added
End) equipment receiving VM (Virtual Machine, virtual machine) transmission ARP (Address Resolution
Protocol, address resolution protocol) after request message, the ARP request message can be sent VTEP equipment each to connection multicast group
Nucleus equipment, to replicate the ARP request message by nucleus equipment, and forward the ARP request message to distal end VTEP equipment.When
When local terminal VM needs to be communicated with a large amount of distal end VM, first message is all flooded, and the workload of nucleus equipment is excessive, affects forwarding property
Energy.
The content of the invention
In view of this, the application provides a kind of VXLAN method of multicasting and device, to solve prior art in, in multiple stage
VTEP equipment adds multicast group, when the first message for being flooded in a large number occur in VXLAN networks, causes the workload mistake of nucleus equipment
Greatly, the problem of forwarding performance is affected.
Specifically, the application is achieved by the following technical solution：
A kind of VXLAN method of multicasting, is applied to transmitting terminal VTEP equipment, including：
After target VXLAN for being configured in the transmitting terminal VTEP equipment adds default multicast group, to the multicast group
Interior each distal end VTEP equipment sends the control message of packaging V XLAN headings, to preserve the VXLAN by each distal end VTEP equipment
The VNI of target VXLAN carried in heading and the mapping relations of the IP address of the transmitting terminal VTEP equipment, and return
The ACK messages of packaging V XLAN headings；
After receiving the ACK messages of the packaging V XLAN headings that each distal end VTEP equipment is returned, VXLAN reports are preserved
The VNI of target VXLAN carried in literary head and the mapping relations of the IP address of each distal end VTEP equipment；
After receiving from the user side BUM message of target VXLAN, according to target VXLAN for having preserved
The mapping relations of VNI and the IP address of each distal end VTEP equipment, the BUM messages are sent to described based on head end replication mode
Each distal end VTEP equipment in multicast group.
In the VXLAN method of multicasting, also include：
When target VXLAN leaves the multicast group, to each distal end VTEP equipment in the multicast group envelope is sent
The control message of dress VXLAN headings, to delete the target carried in the VXLAN headings by each distal end VTEP equipment
The mapping relations of the VNI of VXLAN and the IP address of the transmitting terminal VTEP equipment, and return the ACK reports of packaging V XLAN headings
Text；
After receiving the ACK messages of the packaging V XLAN headings that each distal end VTEP equipment is returned, the VXLAN is deleted
The VNI of target VXLAN carried in heading and the mapping relations of the IP address of each distal end VTEP equipment.
It is described the BUM messages to be sent to the multicast based on head end replication mode in the VXLAN method of multicasting
Each distal end VTEP equipment in group, including：
The head end replication mode of multicast transmission is enabled, according to the VNI for having preserved and the IP address of each distal end VTEP equipment
Mapping relations, are that each distal end VTEP equipment in the multicast group replicates respectively BUM messages；
Packaging V XLAN headings will be distinguished for the BUM messages of each distal end VTEP device replications in the multicast group, and
Unicast is sent to each distal end VTEP equipment.
In the VXLAN method of multicasting, also include：
Receive and be configured in the distal end after target VXLAN of the distal end VTEP equipment addition multicast group
After the control message of the packaging V XLAN headings that VTEP equipment sends, carry in the VXLAN headings for preserving the control message
Target VXLAN VNI and the IP address of the distal end VTEP equipment mapping relations；
The ACK messages of packaging V XLAN headings are sent to the distal end VTEP equipment, to be existed by the distal end VTEP equipment
After receiving the ACK messages of packaging V XLAN headings, preserve VXLAN headings in carry target VXLAN VNI with
The mapping relations of the IP address of the transmitting terminal VTEP equipment, and after BUM messages are received, according to the mapping relations envelope is sent
The BUM messages of dress VXLAN headings are to the transmitting terminal VTEP equipment.
In the VXLAN method of multicasting, also include：
Receive and be configured in target VXLAN of the distal end VTEP equipment and leave the distal end after the multicast group
After the control message of the packaging V XLAN headings that VTEP equipment sends, the target carried in the VXLAN headings is deleted
The mapping relations of the VNI of VXLAN and the IP address of the distal end VTEP equipment；
The ACK messages of packaging V XLAN headings are sent to the distal end VTEP equipment, to be existed by the distal end VTEP equipment
After receiving the ACK messages of packaging V XLAN headings, the VNI of target VXLAN carried in the VXLAN headings is deleted
With the mapping relations of the IP address of the transmitting terminal VTEP equipment.
A kind of VXLAN multicast apparatus, are applied to transmitting terminal VTEP equipment, including：
Transmitting element, for when be configured in the transmitting terminal VTEP equipment target VXLAN add default multicast group after,
The control message of packaging V XLAN headings is sent to each distal end VTEP equipment in the multicast group, to be set by each distal end VTEP
It is standby to preserve the VNI of target VXLAN and reflecting for the IP address of the transmitting terminal VTEP equipment carried in the VXLAN headings
Relation is penetrated, and returns the ACK messages of packaging V XLAN headings；
Receiving unit, for receiving the ACK messages of the packaging V XLAN headings that each distal end VTEP equipment is returned
Afterwards, the mapping of the VNI and the IP address of each distal end VTEP equipment that preserve target VXLAN carried in VXLAN headings is closed
System；
The transmitting element, is further used for after receiving from the user side BUM message of target VXLAN, root
According to the mapping relations of VNI and the IP address of each distal end VTEP equipment of target VXLAN for having preserved, by the BUM messages base
The each distal end VTEP equipment to the multicast group is sent in head end replication mode.
In the VXLAN multicast apparatus, also include：
The transmitting element, is further used for when target VXLAN leaves the multicast group, into the multicast group
Each distal end VTEP equipment send the control message of packaging V XLAN headings, to delete VXLAN report by each distal end VTEP equipment
The VNI of target VXLAN carried in literary head and the mapping relations of the IP address of the transmitting terminal VTEP equipment, and return envelope
The ACK messages of dress VXLAN headings；
The receiving unit, is further used for receiving the institute of the packaging V XLAN headings that each distal end VTEP equipment is returned
After stating ACK messages, the VNI of target VXLAN carried in the VXLAN headings and the IP ground of each distal end VTEP equipment are deleted
The mapping relations of location.
In the VXLAN multicast apparatus, the transmitting element is further used for：
The head end replication mode of multicast transmission is enabled, according to the VNI for having preserved and the IP address of each distal end VTEP equipment
Mapping relations, are that each distal end VTEP equipment in the multicast group replicates respectively BUM messages；
Packaging V XLAN headings will be distinguished for the BUM messages of each distal end VTEP device replications in the multicast group, and
Unicast is sent to each distal end VTEP equipment.
In the VXLAN multicast apparatus, described device also includes：
The receiving unit, is further used for receiving target VXLAN for being configured in the distal end VTEP equipment and adds
Enter after the multicast group after the control message of the packaging V XLAN headings that the distal end VTEP equipment sends, preserve the control
The VNI of target VXLAN carried in the VXLAN headings of message is closed with the mapping of the IP address of the distal end VTEP equipment
System；
The transmitting element, the ACK messages for being further used for sending packaging V XLAN headings set to the distal end VTEP
It is standby, after the ACK messages for receiving packaging V XLAN headings, preserve and taken in VXLAN headings with by the distal end VTEP equipment
The mapping relations of the VNI of target VXLAN of band and the IP address of the transmitting terminal VTEP equipment, and receiving BUM reports
Wen Hou, the BUM messages of packaging V XLAN headings are sent to the transmitting terminal VTEP equipment according to the mapping relations.
In the VXLAN multicast apparatus, also include：
The receiving unit, be further used for receiving target VXLAN for being configured in the distal end VTEP equipment from
Open after the multicast group after the control message of the packaging V XLAN headings that the distal end VTEP equipment sends, delete VXLAN reports
The VNI of target VXLAN carried in literary head and the mapping relations of the IP address of the distal end VTEP equipment；
The transmitting element, the ACK messages for being further used for sending packaging V XLAN headings set to the distal end VTEP
It is standby, with by the distal end VTEP equipment after the ACK messages for receiving packaging V XLAN headings, in deleting the VXLAN headings
The VNI of target VXLAN for carrying and the mapping relations of the IP address of the transmitting terminal VTEP equipment.
In the embodiment of the present application, it is configured in target VXLAN of transmitting terminal VTEP equipment to add after multicast group, transmitting terminal
The IP address of the VNI of target VXLAN and transmitting terminal VTEP equipment is synchronized to each distal end by VTEP equipment by controlling message
VTEP equipment, by each distal end VTEP equipment the mapping of the VNI of target VXLAN and the IP address of transmitting terminal VTEP equipment is preserved
Relation；Each distal end VTEP equipment receive control message after, by ACK messages, by the VNI of target VXLAN and each distal end
The IP address of VTEP equipment is synchronized to transmitting terminal VTEP equipment, by transmitting terminal VTEP equipment preserve the VNI of target VXLAN with
The mapping relations of the IP address of each distal end VTEP equipment, so as to transmitting terminal VTEP equipment is receiving the use from target VXLAN
After the BUM messages of family side, can be according to reflecting between the IP address of the VNI of target VXLAN set up and each distal end VTEP equipment
Relation is penetrated, the BUM message unicasts is sent to each distal end VTEP equipment based on head end replication mode, can be avoided by nucleus equipment
Nucleus equipment processing pressure caused by multicast flood process is carried out to BUM messages using core replication mode excessive, affect forwarding
The problem of performance.
Description of the drawings
Fig. 1 is a kind of Organization Chart of the VXLAN multicasts shown in the application；
Fig. 2 is a kind of flow chart of the VXLAN method of multicasting shown in the application；
Fig. 3 is a kind of logic diagram of the VXLAN multicast apparatus shown in the application；
Fig. 4 is a kind of hardware structure diagram of the VXLAN multicast apparatus shown in the application.
Specific embodiment
In order that those skilled in the art more fully understand the technical scheme in the embodiment of the present invention, and make of the invention real
Apply the above-mentioned purpose of example, feature and advantage can become apparent from it is understandable, below in conjunction with the accompanying drawings to prior art and the present invention
Technical scheme in embodiment is described in further detail.
In the related, when VTEP equipment receives a purpose from the VXLAN for adding multicast group from local VM
MAC Address is the original report of BUM (Broadcast＆Unknown-unicast＆Multicast broadcasts ＆ unknown unicast ＆ multicasts)
Wen Shi, it usually needs the message is encapsulated as into multicast VXLAN messages, is then replicated by nucleus equipment based on the core that multicast sends
Pattern carries out multicast group flood process to learn MAC address entries.
Be a kind of Organization Chart of the VXLAN multicasts shown in the application referring to Fig. 1, as illustrated, VTEP1, VTEP2 and
VTEP3 is connected by nucleus equipment, and VM1 and VM2 accesses VTEP1, and VM3 accesses VTEP2, and VM4 accesses VTEP3.VM1、VM2、
VM3 and VM4 belong to same VXLAN networks, the VXLAN networks can be referred to as into target VXLAN, by VTEP1, VTEP2 and
Target VXLAN configured on VTEP3 is added in same multicast group.
Wherein, above-mentioned VM, refers to utilize Intel Virtualization Technology, and on a physical server multiple main frames are fictionalized.Often
Individual fictitious host computer is independent mutually, there is the equipment such as respective operating system and the internal memory, CPU, the network interface card that are logically independent of each other, from should
From the perspective of program, there is no difference in the case of the overwhelming majority and using physical server.
Above-mentioned VTEP equipment, refers to be used for the endpoint device for setting up VXLAN tunnels in VXLAN networks, in VXLAN
Send in network, receive VXLAN messages；Wherein, VXLAN messages are the message for encapsulating VXLAN headings.One VTEP sets
It is standby to access multiple VXLAN networks, it is also possible to access VM of the multiple stage in similar and different VXLAN networks, wherein, each VM
Double layer network address and three-layer network address be all different.VTEP equipment receives VM and sends to access distal end VTEP equipment
Distal end VM message after, then the message packaging V XLAN headings send the VXLAN messages to nucleus equipment, by core
The heart device forwards VXLAN messages to distal end VTEP equipment, will be sent after message decapsulation to remote by distal end VTEP equipment
End VM.
Above-mentioned nucleus equipment, refers to the backbone device with multicast functionality.
In the case where VM1 does not have the MAC Address of VM3, VM1 can send ARP request message and ask VM3's to VTEP1
MAC Address, the source MAC of the ARP request message is the MAC Address of VM1, and purpose MAC is broadcast MAC.
On the one hand, VTEP1 can preserve the MAC address entries of correspondence VM1, the MAC table after the ARP request message is received
Item includes the MAC Address of VNI, VM1 of target VXLAN and receives the mapping relations of the interface of the ARP request message, the mapping
Relation is used for follow-up unicast forwarding.
On the other hand, VTEP1 is received after the ARP request message, due to the MAC address entries without matching, therefore by the ARP
Request message is sent to all local interfaces in addition to the receiving interface of the ARP request message is received, while can ask to the ARP
Message packaging V XLAN headings are sought, wherein source IP is the IP address of VTEP1, and purpose IP is the IP address of multicast group；Then forward
To nucleus equipment, multicast flood process is carried out based on core replication mode by nucleus equipment, send other into the multicast group
Distal end VETP equipment.
Nucleus equipment is received after the ARP request message of packaging V XLAN headings, reads purpose IP, is then based on core
By the ARP request message of packaging V XLAN headings, flood the heart replication mode VTEP2 and VTEP3 into multicast group.
VTEP2 is received after the ARP request message of packaging V XLAN headings, the MAC address entries of study correspondence VM1, should
MAC address entries include the mapping relations of the IP address of the MAC Address and VTEP1 of VNI, VM1 of target VXLAN, the mapping relations
For follow-up unicast forwarding, while VXLAN headings are decapsulated, by the ARP request message broadcasting to accessing local target
VXLAN。
VM3 is received after the ARP request message, the corresponding relation of the IP address of VM1 and MAC Address recorded local
In ARP table, then arp reply message is sent to VTEP2, the source MAC of the arp reply message is the MAC Address of VM3, purpose MAC
It is the MAC Address of VM1.
VTEP2 is received after the arp reply message, and the MAC address entries of study correspondence VM3, the MAC address entries include target
The MAC Address of VNI, VM3 of VXLAN and receive the arp reply message interface mapping relations, after the mapping relations are used for
Continuous unicast forwarding；Simultaneously local MAC table is searched according to purpose MAC of the arp reply message, obtain the MAC ground of correspondence VM1
The MAC address entries of location, then by the arp reply message packaging V XLAN headings, outer layer purpose IP after encapsulation is the IP of VTEP1
Address, then sends the arp reply message of packaging V XLAN headings to nucleus equipment, to forward the ARP by nucleus equipment
Response message is to VTEP1.
VTEP1 is received after the arp reply message of packaging V XLAN headings, the MAC address entries of study correspondence VM3, should
MAC address entries include the mapping relations of the IP address of the MAC Address and VTEP2 of VNI, VM3 of target VXLAN, and the mapping relations are used
In follow-up unicast forwarding；VXLAN headings are decapsulated simultaneously, are then searched according to purpose MAC of the arp reply message local
MAC table, obtain correspondence VM1 MAC address entries, and according to correspondence VM1 MAC address entries, the arp reply message is sent to VM1.
VM1 recorded the corresponding relation of the IP address of VM3 and MAC Address locally after the arp reply message is received
ARP table in.The list item that follow-up communication between VM1 and VM3 can pass through to have preserved carries out unicast forwarding.
It can be seen that, in the prior art, VTEP equipment from local reception to target MAC (Media Access Control) address for BUM addresses message when,
Typically carry out multicast group flood process to learn MAC address entries based on the compound pattern of core by nucleus equipment.When local VM with it is remote
When end VM needs to carry out mass communication, the first BUM messages that VETP equipment is received all can be replicated by nucleus equipment based on core
Pattern carries out multicast flood process, therefore the instantaneous pressure of nucleus equipment can affect forwarding performance than larger.
For the problems referred to above, due in configuration phase to transmitting terminal VTEP equipment and the distal end VTEP of each distal end VTEP equipment
List is updated, so transmitting terminal VTEP equipment can be flooded when BUM messages are processed based on head end replication mode,
Nucleus equipment is not needed to be flooded.The embodiment of the present application is alleviated and occurs a large amount of groups by way of disperseing VXLAN multicasts and flooding
Broadcast when flooding to the pressure of nucleus equipment, optimize VXLAN method of multicasting, improve forwarding performance.
The technical scheme of the embodiment of the present application is illustrated below in conjunction with the accompanying drawings.
It is a kind of flow chart of the VXLAN method of multicasting shown in the application referring to Fig. 2, the technical scheme is applied to send
End VTEP equipment, the method comprising the steps of：
Step 201：After target VXLAN for being configured in the transmitting terminal VTEP equipment adds default multicast group, to institute
The control message that each distal end VTEP equipment in multicast group sends packaging V XLAN headings is stated, to be protected by each distal end VTEP equipment
The mapping of the VNI and the IP address of the transmitting terminal VTEP equipment that deposit target VXLAN carried in the VXLAN headings is closed
System, and return the ACK messages of packaging V XLAN headings.
Step 202：After receiving the ACK messages of the packaging V XLAN headings that each distal end VTEP equipment is returned, preserve
The VNI of target VXLAN carried in VXLAN headings and the mapping relations of the IP address of each distal end VTEP equipment.
Step 203：After receiving from the user side BUM message of target VXLAN, according to the target for having preserved
The VNI of VXLAN and the mapping relations of the IP address of each distal end VTEP equipment, the BUM messages are sent out based on head end replication mode
Deliver to each distal end VTEP equipment in the multicast group.
The application is added after multicast group by being configured in target VXLAN of transmitting terminal VTEP equipment, is introduced VXLAN neighbours and is closed
The study mechanism of system, will be entered based on core replication mode by nucleus equipment in correlation technique to the user side BUM message for receiving
The pass-through mode that row multicast floods, is changed to by VETP equipment based on head end replication mode to the user side BUM message that receives
Unicast forwarding is carried out, such that it is able to disperse VXLAN multicasts to flood the pressure of the forwarding performance brought to nucleus equipment.
The technical scheme of the application is described in detail with reference to Fig. 1, as shown in figure 1, VTEP1, VTEP2 and
VTEP3 is connected by nucleus equipment, and VM1 and VM2 accesses VTEP1, and VM3 accesses VTEP2, and VM4 accesses VTEP3.VM1、VM2、
VM3 and VM4 belong to same VXLAN networks, the VXLAN networks can be referred to as into target VXLAN, and the VNI of target VXLAN is
1000；Target VXLAN configured on VTEP2 and VTEP3 is added in same multicast group.
In the embodiment of the present application, after target VXLAN for being configured in transmitting terminal VTEP equipment adds multicast group, control is sent
Distal end VTEP equipment in message processed to multicast group, wherein, target VXLAN is carried in the VXLAN headings of above-mentioned control message
VNI, above-mentioned purpose IP for controlling message for multicast group IP address.Such as：As the target VXLAN Jing being configured on VTEP1
Artificial setting is added to after the target VXLAN identical multicast group configured on VTEP2 and VTEP3, that is, belong to VXLAN 1000
VM1 and VM2 it is configured be added to in VM3 and VM4 identical multicast groups, now, VTEP1 can send control message to group
Other the VTEP equipment in group are broadcast, to learn VXLAN neighborhoods.Wherein, the VXLAN headings of above-mentioned control message are carried
VNI is 1000, and above-mentioned purpose IP for controlling message is the IP address of multicast group.
Nucleus equipment is received after above-mentioned control message, reads purpose IP of above-mentioned control message, and will according to purpose IP
Above-mentioned control message sends other VTEP equipment, i.e. VTEP2 and VTEP3 to multicast group.
Each distal end VTEP equipment is received after above-mentioned control message, can preserve the VXLAN headings of above-mentioned control message
In target VXLAN VNI and transmitting terminal VTEP equipment IP address mapping relations, the mapping relations are stored in local
In the VTEP lists of distal end, now, each distal end VTEP equipment learns the neighborhood to transmitting terminal VTEP equipment, i.e. VTEP2
All learn the neighborhood to VTEP1 with VTEP3.
Each distal end VTEP equipment can send the ACK of packaging V XLAN headings after above-mentioned control message is received
(Acknowledgement) message is to transmitting terminal VTEP equipment.Wherein, purpose IP of the ACK messages of packaging V XLAN headings can
Being the IP address of the IP address of transmitting terminal VTEP equipment, i.e. VTEP1.The ACK messages of packaging V XLAN headings are sent to core
After heart equipment, VTEP1 is forwarded to by nucleus equipment.
In the embodiment of the present application, transmitting terminal VTEP equipment receives the packaging V XLAN messages that distal end VTEP equipment is returned
After the ACK messages of head, the VNI of target VXLAN and reflecting for the IP address of distal end VTEP equipment carried in VXLAN headings is preserved
Relation is penetrated, the mapping relations are stored in local distal end VTEP lists.Now, transmitting terminal VTEP equipment learns to distal end
The neighborhood of VTEP equipment.
Such as：VTEP1 receives the ACK messages of VTEP2 returns, and in local distal end VTEP lists target is preserved
The mapping relations of the IP address of the VNI and VTEP2 of VXLAN, now, the neighborhood of VTEP1 study to VTEP2.
After VTEP1 and VTEP2, VTEP3 set up neighborhood, when the BUM messages of user side are received, can be with root
BUM messages are processed according to neighborhood.
In the embodiment of the present application, when transmitting terminal VTEP equipment receives the BUM reports of the user side from target VXLAN
Text, due to the MAC address entries without matching, therefore the BUM messages is sent in addition to the receiving interface of the BUM messages is received
Distal end VTEP equipment in all local interfaces and multicast group for accessing target VXLAN.
In the embodiment of the present application, transmitting terminal VTEP equipment is sending BUM messages to the distal end VTEP equipment in multicast group
When, the IP address of multicast group is no longer filled to purpose IP of the VXLAN headings of BUM messages encapsulation, then send BUM messages
To nucleus equipment, the BUM messages are forwarded to each distal end VTEP equipment based on core replication mode by nucleus equipment, but directly base
In head end replication mode, broadcast to each distal end VTEP tabless of equipment and send BUM messages.Due to replicating the work of BUM messages by transmitting terminal
VTEP equipment replaces nucleus equipment to complete, therefore can alleviate the operating pressure of nucleus equipment, effectively improves forwarding performance.
Specifically, when the BUM messages to be sent the distal end VTEP equipment to multicast group, multicast transmission can be enabled
Head end replication mode.According to the VNI and the mapping relations of the IP address of distal end VTEP equipment of target VXLAN for having preserved, it is
Each distal end VTEP equipment in multicast group replicates respectively BUM messages.
Then according to above-mentioned mapping relations, will encapsulate for the above-mentioned BUM messages of each distal end VTEP device replications in multicast group
VXLAN headings, target ip address is filled out as the IP address of each distal end VTEP equipment, and the BUM of packaging V XLAN headings is reported
Literary unicast is sent to each distal end VTEP equipment.
Such as, VTEP1 receives the BUM messages of VM1 transmissions, and BUM messages are being sent to before VTEP2 and VTEP3, can
It is VTEP2 and VTEP3 replicates respectively BUM messages according to the neighborhood for learning, then to enable head end replication mode, obtains
Two BUM messages are obtained, is then BUM message packaging V XLAN headings, to the BUM messages of packaging V XLAN headings purpose is filled
IP, purpose IP of filling is respectively the IP address of VTEP2 and VTEP3, and then sends the BUM messages of packaging V XLAN headings extremely
Nucleus equipment, the BUM messages of packaging V XLAN headings are sent to VTEP2 and VTEP3 according to purpose IP by nucleus equipment.
It can be seen that, by head end replication mode, transmitting terminal VTEP equipment, can be with when the BUM messages that local reception is arrived are processed
According to the mapping relations of the IP address of the VNI and distal end VTEP equipment of target VXLAN for having preserved, independently duplication is sent to each remote
The BUM messages of end VTEP equipment, then fill the IP address of each distal end VTEP equipment, Jin Erdan in the heading of BUM messages
Broadcast to serve and state BUM messages to each distal end VTEP equipment.So occurring needing the BUM for flooding to report in a large number in VXLAN multicast groups
Wen Shi, each transmitting terminal VTEP equipment has disperseed to replicate the work of BUM messages by nucleus equipment originally, can effectively alleviate core
The operating pressure of equipment.
In the embodiment of the present application, transmitting terminal VTEP equipment is with each distal end VTEP equipment in addition to VXLAN neighborhoods are set up,
Can be with after VXLAN neighborhoods be set up, with each distal end VTEP equipment releasing VXLAN neighborhoods.
After target VXLAN for being configured in transmitting terminal VTEP equipment leaves multicast group, transmission control message is to multicast group
Each distal end VTEP equipment, wherein, in the VXLAN headings of above-mentioned control message carry target VXLAN VNI, above-mentioned control
Purpose IP of message is the IP address of multicast group.Such as：When the target VXLAN Jing for being configured in VTEP1 manually arrange leave with
After the target VXLAN identical multicast group configured on VTEP2 and VTEP3, that is, the VM1 and VM2 for belonging to VXLAN 1000 is configured
Leave and VM3 and VM4 identical multicast groups, now, other VTEP that VTEP1 can be sent in control message to multicast group set
It is standby, to release VXLAN neighborhoods.Wherein, the VNI that the above-mentioned VXLAN headings for controlling message are carried is 1000, above-mentioned control
Purpose IP of message is the IP address of multicast group.
Nucleus equipment is received after above-mentioned control message, reads purpose IP of above-mentioned control message, and will according to purpose IP
Above-mentioned control message sends other VTEP equipment, i.e. VTEP2 and VTEP3 to multicast group.
Each distal end VTEP equipment is received after above-mentioned control message, can be deleted and has been stored in local distal end VTEP lists
In target VXLAN VNI and transmitting terminal VTEP equipment IP address mapping relations, now, each distal end VTEP equipment is solved
Except the neighborhood of transmitting terminal VTEP equipment, i.e. VTEP2 and VTEP3 relieve the neighborhood of VTEP1.
In the embodiment of the present application, each distal end VTEP equipment is received after above-mentioned control message, can send packaging V XLAN
The ACK messages of heading are to transmitting terminal VTEP equipment.Wherein, purpose IP of the ACK messages of packaging V XLAN headings can be sent out
The IP address of the IP address of sending end VTEP equipment, i.e. VTEP1, carries the VNI of target VXLAN in the VXLAN headings.Envelope
The ACK messages of dress VXLAN headings are sent to after nucleus equipment, and by nucleus equipment VTEP1 is forwarded to.
Transmitting terminal VTEP equipment is received after the above-mentioned ACK messages of packaging V XLAN headings, can be deleted and has been stored in this
The VNI of target VXLAN in the distal end VTEP lists on ground and the mapping relations of the IP address of each distal end VTEP equipment, now, send out
Sending end VTEP equipment relieves the neighborhood with distal end VTEP equipment.Such as：VTEP1 receives the ACK messages of VTEP2 returns
Afterwards, the mapping relations of the IP address of the VNI and VTEP2 of target VXLAN in local VTEP lists are deleted；VTEP1 receives VTEP3
After the ACK messages of return, the mapping relations of the IP address of the VNI and VTEP3 of target VXLAN in local VTEP lists are deleted.
After transmitting terminal VTEP equipment mutually releases neighborhood with each distal end VTEP equipment, each distal end VTEP equipment is at place
Reason from the multicast VXLAN messages of target VXLAN when, because of the already out multicast group of target VXLAN of transmitting terminal VTEP device configurations,
Message is not retransmited to transmitting terminal VTEP equipment.
Below so that BUM messages are for ARP messages as an example, the process for once flooding is described.
In the case where VM1 does not have the MAC Address of VM3, VM1 can send ARP request message and ask VM3's to VTEP1
MAC Address, the source MAC of the ARP request message is the MAC Address of VM1, and purpose MAC is broadcast MAC.
On the one hand, VTEP1 is received after the ARP request message, can preserve the MAC address entries of correspondence VM1, the MAC address entries
MAC Address including VNI, VM1 of target VXLAN and receive the ARP request message interface mapping relations, the mapping closes
It is for follow-up unicast forwarding.
On the other hand, VTEP1 is received after the ARP request message, due to the MAC address entries without matching, therefore by the ARP
Request message is sent to all local interfaces in addition to the receiving interface of the ARP request message is received；Simultaneously head end can be enabled
Replication mode, according to VNI and the mapping relations of the IP address of each distal end VTEP equipment of target VXLAN for pre-saving, be
VTEP2 and VTEP3 replicate respectively the ARP request message.After the completion of duplication, VTEP1 will replicate the ARP request message envelope for obtaining
Dress carries the VXLAN headings of the VNI of target VXLAN, and fills purpose respectively in the VXLAN headings of ARP request message
IP, wherein, purpose IP is the IP address of VTEP2 and VTEP3.VTEP1 sends the ARP request message of packaging V XLAN headings
To nucleus equipment, other distal ends VTEP equipment in the multicast group at VM1 places is forwarded to by nucleus equipment.
Nucleus equipment reads purpose IP, then according to reading after the ARP request message for receiving packaging V XLAN headings
As a result, the ARP request message by purpose IP for the IP address of VTEP2 is sent to VTEP2, by the IP address that purpose IP is VTEP3
ARP request message send to VTEP3.
In sum, in the embodiment of the present application, by introducing the study mechanism of VXLAN neighborhoods, i.e., when being configured in
Target VXLAN on transmitting terminal VTEP equipment is added after multicast group, and transmitting terminal VTEP equipment is same with multicast group to configure target
VXLAN neighborhoods are set up between each distal end VTEP equipment of VXLAN, after neighborhood is set up, if transmitting terminal VTEP sets
It is standby to receive after the user side BUM message of target VXLAN, head end replication mode is enabled, the BUM is replicated according to neighborhood
Message, the IP address of each distal end VTEP equipment is filled to respectively the purpose of the VXLAN headings for replicating the BUM messages for obtaining
IP, and BUM messages are sent to each distal end VTEP equipment.By above measure, as the BUM for occurring needing to flood in a large number in multicast group
During message, the work for replicating BUM messages is completed by transmitting terminal VTEP equipment replacements nucleus equipment so that nucleus equipment is being received
Core replication mode is not necessarily based on to after the BUM messages of packaging V XLAN headings and processes BUM messages, and can directly forward BUM
Message, effectively reduces the operating pressure of nucleus equipment, optimizes forwarding performance.
It is corresponding with the embodiment of the application VXLAN method of multicasting, present invention also provides for performing said method reality
Apply the embodiment of the device of example.
It is one embodiment block diagram of the application VXLAN multicast apparatus referring to Fig. 3：
As shown in figure 3, the VXLAN multicast apparatus 30 include：
Transmitting element 310, for adding default multicast group when target VXLAN for being configured in the transmitting terminal VTEP equipment
Afterwards, the control message of packaging V XLAN headings is sent to each distal end VTEP equipment in the multicast group, with by each distal end VTEP
Equipment preserves the VNI and the IP address of the transmitting terminal VTEP equipment of target VXLAN carried in the VXLAN headings
Mapping relations, and return the ACK messages of packaging V XLAN headings.
Receiving unit 320, for receiving the ACK reports of the packaging V XLAN headings that each distal end VTEP equipment is returned
Wen Hou, preserves the VNI of target VXLAN carried in VXLAN headings and the mapping of the IP address of each distal end VTEP equipment
Relation.
The transmitting element 310, is further used for after receiving from the user side BUM message of target VXLAN,
According to the mapping relations of the VNI of target VXLAN for having preserved and the IP address of each distal end VTEP equipment, by the BUM messages
The each distal end VTEP equipment to the multicast group is sent based on head end replication mode.
In this example, described device also includes：
The transmitting element 310, is further used for when target VXLAN leaves the multicast group, to the multicast
Each distal end VTEP equipment in group sends the control message of packaging V XLAN headings, is somebody's turn to do with being deleted by each distal end VTEP equipment
The VNI of target VXLAN carried in VXLAN headings and the mapping relations of the IP address of the transmitting terminal VTEP equipment,
And return the ACK messages of packaging V XLAN headings.
The receiving unit 320, is further used for receiving the packaging V XLAN headings that each distal end VTEP equipment is returned
After the ACK messages, the VNI of target VXLAN carried in the VXLAN headings and IP of each distal end VTEP equipment is deleted
The mapping relations of address.
In this example, the transmitting element 310, is further used for：
The head end replication mode of multicast transmission is enabled, according to the VNI for having preserved and the IP address of each distal end VTEP equipment
Mapping relations, are that each distal end VTEP equipment in the multicast group replicates respectively BUM messages；
Packaging V XLAN headings will be distinguished for the BUM messages of each distal end VTEP device replications in the multicast group, and
Unicast is sent to each distal end VTEP equipment.
In this example, described device also includes：
The receiving unit 320, is further used for receiving target VXLAN for being configured in the distal end VTEP equipment
Add after the multicast group after the control message of the packaging V XLAN headings that the distal end VTEP equipment sends, preserve the control
The VNI of target VXLAN carried in the VXLAN headings of message processed and the mapping of the IP address of the distal end VTEP equipment
Relation.
The transmitting element 310, is further used for sending the ACK messages of packaging V XLAN headings to the distal end VTEP
Equipment, with by the distal end VTEP equipment after the ACK messages for receiving packaging V XLAN headings, preserve VXLAN headings in
The VNI of target VXLAN for carrying and the mapping relations of the IP address of the transmitting terminal VTEP equipment, and receiving BUM
After message, the BUM messages of packaging V XLAN headings are sent to the transmitting terminal VTEP equipment according to the mapping relations.
In this example, described device also includes：
The receiving unit 320, is further used for receiving target VXLAN for being configured in the distal end VTEP equipment
Leave after the multicast group after the control message of the packaging V XLAN headings that the distal end VTEP equipment sends, delete the VXLAN
The VNI of target VXLAN carried in heading and the mapping relations of the IP address of the distal end VTEP equipment.
The transmitting element 310, is further used for sending the ACK messages of packaging V XLAN headings to the distal end VTEP
Equipment, after the ACK messages for receiving packaging V XLAN headings, the VXLAN headings are deleted with by the distal end VTEP equipment
The mapping relations of the VNI of target VXLAN of middle carrying and the IP address of the transmitting terminal VTEP equipment.
The embodiment of the application VXLAN multicast apparatus can be applied on transmitting terminal VTEP equipment.Device embodiment can be with
Realized by software, it is also possible to realized by way of hardware or software and hardware combining.As a example by implemented in software, patrol as one
Device in volume meaning, is by corresponding calculating in nonvolatile memory by the processor of its place transmitting terminal VTEP equipment
Machine programmed instruction reads what operation in internal memory was formed.From for hardware view, as shown in figure 4, filling for the application VXLAN multicast
A kind of hardware structure diagram of place transmitting terminal VTEP equipment is put, except the processor shown in Fig. 4, internal memory, network interface, Yi Jifei
Outside volatile memory, reality of the transmitting terminal VTEP equipment that device is located in embodiment generally according to the VXLAN multicast apparatus
Border function, can also include other hardware, and this is repeated no more.
The function of unit and effect realizes that process specifically refers in said method correspondence step in said apparatus
Process is realized, be will not be described here.
For device embodiment, because it corresponds essentially to embodiment of the method, so related part is referring to method reality
Apply the part explanation of example.Device embodiment described above is only schematic, wherein described as separating component
The unit of explanation can be or may not be physically separate, can be as the part that unit shows or can also
It is not physical location, you can be located at a place, or can also be distributed on multiple NEs.Can be according to reality
Need the purpose for selecting some or all of module therein to realize application scheme.Those of ordinary skill in the art are not paying
In the case of going out creative work, you can to understand and implement.
The preferred embodiment of the application is the foregoing is only, not to limit the application, all essences in the application
Within god and principle, any modification, equivalent substitution and improvements done etc. should be included within the scope of the application protection.
Claims (10)
1. a kind of VXLAN method of multicasting, is applied to transmitting terminal VTEP equipment, it is characterised in that include：
After target VXLAN for being configured in the transmitting terminal VTEP equipment adds default multicast group, into the multicast group
Each distal end VTEP equipment sends the control message of packaging V XLAN headings, to preserve the VXLAN messages by each distal end VTEP equipment
The VNI of target VXLAN carried in head and the mapping relations of the IP address of the transmitting terminal VTEP equipment, and return encapsulation
The ACK messages of VXLAN headings；
After receiving the ACK messages of the packaging V XLAN headings that each distal end VTEP equipment is returned, VXLAN headings are preserved
The mapping relations of the VNI of target VXLAN of middle carrying and the IP address of each distal end VTEP equipment；
After receiving from the user side BUM message of target VXLAN, according to the VNI of target VXLAN for having preserved with
The mapping relations of the IP address of each distal end VTEP equipment, the BUM messages are sent to the multicast based on head end replication mode
Each distal end VTEP equipment in group.
2. method according to claim 1, it is characterised in that methods described also includes：
When target VXLAN leaves the multicast group, to each distal end VTEP equipment in the multicast group encapsulation is sent
The control message of VXLAN headings, to delete the target carried in the VXLAN headings by each distal end VTEP equipment
The mapping relations of the VNI of VXLAN and the IP address of the transmitting terminal VTEP equipment, and return the ACK reports of packaging V XLAN headings
Text；
After receiving the ACK messages of the packaging V XLAN headings that each distal end VTEP equipment is returned, the VXLAN messages are deleted
The VNI of target VXLAN carried in head and the mapping relations of the IP address of each distal end VTEP equipment.
3. method according to claim 1, it is characterised in that described to send out the BUM messages based on head end replication mode
The each distal end VTEP equipment in the multicast group is delivered to, including：
The head end replication mode of multicast transmission is enabled, according to the mapping of the VNI for having preserved and the IP address of each distal end VTEP equipment
Relation, is that each distal end VTEP equipment in the multicast group replicates respectively BUM messages；
Packaging V XLAN headings, and unicast will be distinguished for the BUM messages of each distal end VTEP device replications in the multicast group
Send to each distal end VTEP equipment.
4. method according to claim 1, it is characterised in that methods described also includes：
Receive and be configured in target VXLAN of the distal end VTEP equipment and add the distal end VTEP after the multicast group to set
After the control message of the packaging V XLAN headings that preparation is sent, what is carried in the VXLAN headings for preserving the control message is described
The mapping relations of the VNI of target VXLAN and the IP address of the distal end VTEP equipment；
The ACK messages of packaging V XLAN headings are sent to the distal end VTEP equipment, to be received by the distal end VTEP equipment
To after the ACK messages of packaging V XLAN headings, preserve VXLAN headings in carry target VXLAN VNI with it is described
The mapping relations of the IP address of transmitting terminal VTEP equipment, and after BUM messages are received, according to the mapping relations encapsulation is sent
The BUM messages of VXLAN headings are to the transmitting terminal VTEP equipment.
5. method according to claim 1, it is characterised in that methods described also includes：
Receive and be configured in target VXLAN of the distal end VTEP equipment and leave the distal end VTEP after the multicast group and set
After the control message of the packaging V XLAN headings that preparation is sent, target VXLAN of carrying in the VXLAN headings is deleted
The mapping relations of VNI and the IP address of the distal end VTEP equipment；
The ACK messages of packaging V XLAN headings are sent to the distal end VTEP equipment, to be received by the distal end VTEP equipment
To after the ACK messages of packaging V XLAN headings, VNI and the institute of target VXLAN carried in the VXLAN headings is deleted
State the mapping relations of the IP address of transmitting terminal VTEP equipment.
6. a kind of VXLAN multicast apparatus, are applied to transmitting terminal VTEP equipment, it is characterised in that include：
Transmitting element, for after target VXLAN for being configured in the transmitting terminal VTEP equipment adds default multicast group, to institute
The control message that each distal end VTEP equipment in multicast group sends packaging V XLAN headings is stated, to be protected by each distal end VTEP equipment
The mapping of the VNI and the IP address of the transmitting terminal VTEP equipment that deposit target VXLAN carried in the VXLAN headings is closed
System, and return the ACK messages of packaging V XLAN headings；
Receiving unit, for after the ACK messages for receiving the packaging V XLAN headings that each distal end VTEP equipment is returned, protecting
Deposit the VNI of target VXLAN carried in VXLAN headings and the mapping relations of the IP address of each distal end VTEP equipment；
The transmitting element, is further used for after receiving from the user side BUM message of target VXLAN, according to
The VNI of target VXLAN for preserving and the mapping relations of the IP address of each distal end VTEP equipment, by the BUM messages head is based on
End replication mode sends each distal end VTEP equipment to the multicast group.
7. device according to claim 6, it is characterised in that described device also includes：
The transmitting element, is further used for when target VXLAN leaves the multicast group, to each in the multicast group
Distal end VTEP equipment sends the control message of packaging V XLAN headings, to delete the VXLAN headings by each distal end VTEP equipment
The mapping relations of the VNI of target VXLAN of middle carrying and the IP address of the transmitting terminal VTEP equipment, and return encapsulation
The ACK messages of VXLAN headings；
The receiving unit, is further used for receiving the ACK of the packaging V XLAN headings that each distal end VTEP equipment is returned
After message, the VNI and the IP address of each distal end VTEP equipment of target VXLAN carried in the VXLAN headings is deleted
Mapping relations.
8. device according to claim 6, it is characterised in that the transmitting element, is further used for：
The head end replication mode of multicast transmission is enabled, according to the mapping of the VNI for having preserved and the IP address of each distal end VTEP equipment
Relation, is that each distal end VTEP equipment in the multicast group replicates respectively BUM messages；
Packaging V XLAN headings, and unicast will be distinguished for the BUM messages of each distal end VTEP device replications in the multicast group
Send to each distal end VTEP equipment.
9. device according to claim 6, it is characterised in that described device also includes：
The receiving unit, is further used for receiving target VXLAN for being configured in distal end VTEP equipment addition institute
State after multicast group after the control message of the packaging V XLAN headings that the distal end VTEP equipment sends, preserve the control message
VXLAN headings in the mapping relations of VNI and the IP address of the distal end VTEP equipment of target VXLAN that carry；
The transmitting element, is further used for sending the ACK messages of packaging V XLAN headings to the distal end VTEP equipment, with
By the distal end VTEP equipment after the ACK messages for receiving packaging V XLAN headings, preserve what is carried in VXLAN headings
The mapping relations of the VNI of target VXLAN and the IP address of the transmitting terminal VTEP equipment, and after BUM messages are received,
According to the mapping relations BUM messages of packaging V XLAN headings are sent to the transmitting terminal VTEP equipment.
10. device according to claim 6, it is characterised in that described device also includes：
The receiving unit, is further used for receiving target VXLAN for being configured in the distal end VTEP equipment and leaves institute
State after multicast group after the control message of the packaging V XLAN headings that the distal end VTEP equipment sends, delete the VXLAN headings
The mapping relations of the VNI of target VXLAN of middle carrying and the IP address of the distal end VTEP equipment；
The transmitting element, is further used for sending the ACK messages of packaging V XLAN headings to the distal end VTEP equipment, with
By the distal end VTEP equipment after the ACK messages for receiving packaging V XLAN headings, delete in the VXLAN headings and carry
Target VXLAN VNI and the IP address of the transmitting terminal VTEP equipment mapping relations.
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| CN201611141814.2A CN106656722A (en) | 2016-12-12 | 2016-12-12 | VXLAN multicasting method and device |
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| CN201611141814.2A CN106656722A (en) | 2016-12-12 | 2016-12-12 | VXLAN multicasting method and device |
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