CN108259304A - A kind of forwarding-table item synchronous method and device - Google Patents
A kind of forwarding-table item synchronous method and device Download PDFInfo
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- CN108259304A CN108259304A CN201711454167.5A CN201711454167A CN108259304A CN 108259304 A CN108259304 A CN 108259304A CN 201711454167 A CN201711454167 A CN 201711454167A CN 108259304 A CN108259304 A CN 108259304A
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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
- H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
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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
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/44—Distributed 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
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1095—Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
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Abstract
The application provides a kind of forwarding-table item synchronous method and device, this method can be applicable to any VTEP equipment in distributed paradigmatic system, including：Receive the first EVPN advertising of route message from opposite end VTEP；Check whether the source of the first EVPN advertising of route message with this equipment is in same distributed paradigmatic system；When the source for checking the first EVPN advertising of route message is in same distributed paradigmatic system with this equipment, according to the first EVPN advertising of route message, the first forwarding-table item is generated.Due to synchronizing forwarding-table item using EVPN advertising of route message, so the synchronizing speed of the forwarding-table item in distributed paradigmatic system can be improved.
Description
Technical field
This application involves computer communication field more particularly to a kind of forwarding-table item synchronous method and device.
Background technology
EVPN (Ethernet Virtual Private Network, Ethernet Virtual Private Network) is two layers a kind of
VPN technologies notice routing letter using BGP (Border Gateway Protocol, Border Gateway Protocol) on the control plane
Breath is turned on data plane using VXLAN (Virtual eXtensible LAN, expansible Virtual Local Area Network) packaged type
Send out user's message.
Fig. 1 shows the distributed paradigmatic system in EVPN networkings, and such as DR, (Distributed Relay, distribution are poly-
Close) system.In networking shown in Fig. 1, VTEP11 (VXLAN Tunnel End Point, VXLAN endpoint of a tunnel) and
VTEP12 can form a DR system.VTEP11 and VTEP12 can pass through distributed aggregation interface and VM11 (Virtual
Machine, virtual machine) it is connected, VM11 is connected by General polymeric interface with VTEP11 and VTEP12.
In general, it is all by Rlink (Reliable link, process that the list item between VTEP equipment in DR systems, which synchronizes,
Between communicate) come what is completed, such as when VTEP11 study to the MAC Address of VM11 forwarding-table item after, VTEP11 can pass through Rlink
By study to forwarding-table item be synchronized to VTEP12.However, Rlink can be shared by many modules in equipment so that
Rlink can not only synchronize list item, can be with transmitting data flow amount.Therefore, VTEP11 is synchronized to VTEP12 by Rlink and forwarded
During list item, forwarding-table item to be synchronized will be caused to be forwarded together with data traffic, congestion can be caused, substantially reduce forwarding-table item
Synchronizing speed.
Invention content
In view of this, the application provides a kind of forwarding-table item synchronous method and device, to improve the forwarding in DR systems
The synchronizing speed of list item.
Specifically, the application is achieved by the following technical solution：
According to the application's in a first aspect, providing a kind of forwarding-table item synchronous method, this method is applied to distributed polymerize
Any VTEP equipment in system, including：
Receive the first EVPN advertising of route message from opposite end VTEP；
Check whether the source of the first EVPN advertising of route message with this equipment is in same distributed paradigmatic system；
When the source for checking the first EVPN advertising of route message is in same distributed paradigmatic system with this equipment
When, according to the first EVPN advertising of route message, generate the first forwarding-table item；The medium access control of first forwarding-table item
MAC Address processed is the MAC Address that the first EVPN advertising of route message carries, and outgoing interface is the first EVPN advertising of route
The distributed polymerization DR interfaces that message carries, first forwarding-table item can with the first EVPN advertising of route message carrying
It extends virtual LAN VXLAN and identifies associated virtual switch instance VSI correspondences.
Optionally, the source for checking the first EVPN advertising of route message is in same distribution with this equipment
Paradigmatic system, including：
Whether the value for detecting the specific field of the first EVPN advertising of route message is preset value and described first
Whether the distributed polymerization address of EVPN advertising of route message with the distributed of this equipment polymerize address identical.
Optionally, the method further includes：
After the second forwarding-table item to outgoing interface for distributed polymerization DR interfaces is learnt, construction and second forwarding-table item
Corresponding second Ethernet Virtual Private Network EVPN advertising of route message；
The 2nd EVPN advertising of route message is broadcasted, which is synchronized to the distribution belonging to this equipment
Other VTEP equipment being connected with this equipment in formula paradigmatic system.
Optionally, it is described according to the first EVPN advertising of route message, the first forwarding-table item is generated, including：
Obtain the MAC Address carried in the first EVPN advertising of route message, VXLAN marks and DR interface identifier；
It detects and whether there is in this equipment with the VXLAN corresponding VSI of mark that get and described in getting
The corresponding DR interfaces of DR interface identifier；
If in the presence of the first forwarding-table item is generated；The MAC Address of first forwarding-table item is the MAC that gets
Location, outgoing interface are the DR interfaces got, and first forwarding-table item and the VXLAN marks got are associated
VSI is corresponded to.
Optionally, the method further includes：
If the value of the specific field of the first EVPN advertising of route message is not the preset value or described
The distributed polymerization address that one EVPN advertising of route message carries polymerize address with the distribution of this equipment and differs, then foundation the
One EVPN advertising of route message generates third forwarding-table item；Wherein, the MAC Address of the third forwarding-table item is described first
The MAC Address that EVPN advertising of route message carries, outgoing interface are that the VXLAN tunnels of the first EVPN advertising of route message of reception connect
Mouthful.
According to the second aspect of the application, a kind of forwarding-table item synchronizing device is provided, which is characterized in that the device is applied to
Any expansible Virtual Local Area Network endpoint of a tunnel VTEP equipment in distributed paradigmatic system, including：
Receiving unit, for receiving the first EVPN advertising of route message from opposite end VTEP；
Inspection unit, for checking whether the source of the first EVPN advertising of route message is in same point with this equipment
Cloth paradigmatic system；
Generation unit, for being in same point with this equipment when the source for checking the first EVPN advertising of route message
During cloth paradigmatic system, according to the first EVPN advertising of route message, the first forwarding-table item is generated；First forwarding-table item
Medium access control MAC Address be the first EVPN advertising of route message carry MAC Address, outgoing interface be described first
The distributed polymerization DR interfaces that EVPN advertising of route message carries, first forwarding-table item and the first EVPN advertising of route
The expansible virtual LAN VXLAN that message carries identifies associated virtual switch instance VSI and corresponds to.
Optionally, the inspection unit, specifically for detecting the specific field of the first EVPN advertising of route message
Whether value is preset value and the distributed polymerization address of the first EVPN advertising of route message and the distribution of this equipment
Whether identical it polymerize address.
Optionally, described device further includes：
Unit, for after the second forwarding-table item to outgoing interface for distributed polymerization DR interfaces is learnt, construction with
The corresponding second Ethernet Virtual Private Network EVPN advertising of route message of second forwarding-table item；
Second forwarding-table item for broadcasting the 2nd EVPN advertising of route message, is synchronized to this by radio unit
Other VTEP equipment being connected with this equipment in distributed paradigmatic system belonging to equipment.
Optionally, the generation unit, specifically for obtaining the MAC carried in the first EVPN advertising of route message
Location, VXLAN marks and DR interface identifier；It detects in this equipment with the presence or absence of corresponding with the VXLAN marks got
VSI and the corresponding DR interfaces of the DR interface identifier got；If in the presence of the first forwarding-table item is generated；Described first turn
The MAC Address of forwarding list item is the MAC Address got, and outgoing interface is the DR interfaces got, first forwarding
List item is corresponding with the associated VSI of VXLAN marks got.
Optionally, the generation unit, if the specific field also particularly useful for the first EVPN advertising of route message
Value be not distributed polymerization address and this equipment that the preset value or the first EVPN advertising of route message carry
Distributed polymerization address differ, then according to the first EVPN advertising of route message, generate third forwarding-table item；Wherein, it is described
The MAC Address of third forwarding-table item is the MAC Address that the first EVPN advertising of route message carries, outgoing interface for receive this
The VXLAN tunnel interfaces of one EVPN advertising of route message.
The application proposes a kind of forwarding-table item synchronous method, and synchronous forwarding-table item is needed between the VTEP in DR systems
When, EVPN advertising of route message can be used to synchronize forwarding-table item.
On the one hand, since the network equipment of each company all supports BGP EVPN agreements, using based on BGP EVPN agreements
EVPN advertising of route message synchronize forwarding-table item, will not be again by using Rlink and the network equipment based on proprietary protocol
Unmatched limitation；On the other hand, it is very huge based on the routing amount entrained by the EVPN advertising of route message of BGP EVPN agreements
Greatly, and due to no longer using simultaneously transmitting data flow amount with the Rlink of forwarding-table item come synchronous forwarding-table item, so in synchronization
Congestion can not be generated during forwarding-table item again, so as to substantially increase the synchronization of the forwarding-table item between the VTEP equipment in DR systems
Efficiency.
Description of the drawings
Fig. 1 is the network architecture of EVPN using distributed paradigmatic system shown in one exemplary embodiment of the application a kind of
Schematic diagram；
Fig. 2 is a kind of flow chart of forwarding-table item synchronous method shown in one exemplary embodiment of the application；
Fig. 3 is a kind of hardware configuration of forwarding-table item synchronizing device place equipment shown in one exemplary embodiment of the application
Figure；
Fig. 4 is a kind of block diagram of forwarding-table item synchronizing device shown in one exemplary embodiment of the application.
Specific embodiment
Here exemplary embodiment will be illustrated in detail, example is illustrated in the accompanying drawings.Following description is related to
During attached drawing, unless otherwise indicated, the same numbers in different attached drawings represent the same or similar element.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects be described in detail in claims, the application.
It is only merely for the purpose of description specific embodiment in term used in this application, and is not intended to be limiting the application.
It is also intended in the application and " one kind " of singulative used in the attached claims, " described " and "the" including majority
Form, unless context clearly shows that other meanings.It is also understood that term "and/or" used herein refers to and wraps
Containing one or more associated list items purposes, any or all may be combined.
It will be appreciated that though various information, but this may be described using term first, second, third, etc. in the application
A little information should not necessarily be limited by these terms.These terms are only used for same type of information being distinguished from each other out.For example, not departing from
In the case of the application range, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as
One information.Depending on linguistic context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determining ".
In the EVPN networkings using distributed paradigmatic system as shown in Figure 1, VTEP11 and VTEP12 can organize ingredient
Cloth paradigmatic system, i.e. DR systems.DR systems are connected by VXLAN tunnels with the VTEP13 of distal end.Specially in DR systems
VTEP11 and VTEP12 is connected respectively by VXLAN tunnels with the VTEP13 of distal end.
Each VTEP in the networking is connected respectively with corresponding host.The host may include virtual machine VM
(Virtual Machine, virtual machine) or server do not carry out host specifically defined here.
For example, VTEP13 is connected with VM13, VTEP12 is connected with VM12.VTEP11 and VTEP12 is that polymerization connects by distribution
Mouth is connected with VM11, and VM11 is connect by General polymeric mouth with VTEP11 and VTEP12.
Specifically, the port Port14 that connection VTEP12 on the port Port13 and VM11 of VTEP11 is connected on VM11 is added in
General polymeric interface Aggr1 interfaces.The Port12 that the connection VM11 on the Port11 and VTEP12 of VM11 is connected on VTEP11 adds
Enter distributed aggregation interface DR interfaces 1.Being created on DR interfaces 1 has AC mouthfuls, is AC100.
It is assumed that the meaning of this AC100 is：The data message entered from physical port ten1/0/1, if carrying tag
10, then it can enter vsivpnb and forward.Wherein, vpnb is VSI's (Virtual Switch Instance, virtual switch instance)
Title.In addition, VTEP11 and VTEP12 are also configured with VSIvpnb, it is assumed that VSI vpnb correspond to VXLAN 100.
Below still by taking networking shown in FIG. 1 as an example, under simple introduction in the related art, the VTEP in above-mentioned DR systems is set
Forwarding-table item synchronizing process between standby.
VM11 can send service traffics by General polymeric interface Aggr1 to above-mentioned DR systems, it is assumed that the service traffics are taken
The VLAN TAG of band are tag10, and the source MAC of the flow is 1-1-1.
In transmission process, VM11 can in the both links of local and VTEP11 and VTEP12 Hash go out a link into
Row flow forwards.It is assumed that link of the link that goes out of Hash between local and VTEP11.The service traffics can be passed through Kazakhstan by VM11
The link wished out, is sent to VTEP11.
VTEP11 can receive the service traffics of VM11 transmissions from above-mentioned DR interfaces 1.VTEP11 can be true according to DR interfaces 1
The AC100 being configured on the fixed DR interfaces 1.By the AC100, VTEP11 can determine that the tag 10 that the service traffics carry is matched
VSI vpnb。
Then, VTEP11 can learn the source MAC of the service traffics into the forwarding-table item of the VSI vpnb, study
The forwarding-table item arrived is as shown in table 1.
| MAC Address | State | VSI titles | Outgoing interface |
| 1-1-1 | Dynamic | vpnb | DR interfaces 1 |
Table 1
Wherein, Dynamic represents that this forwarding-table item is flow dynamics triggering study.
Link of the link gone out due to VM11 Hash between VM11 and VTEP11, so, only VTEP11 can be received
The service traffics learn the MAC Address of the service traffics, form the forwarding-table item shown in table 1.And it is that will not generate on VTEP12
The forwarding-table item.At this time, it may be necessary to the forwarding-table item generated on VTEP11 is synchronized to VTEP12.
In existing synchronizing process, VTEP11 needs to send Rlink sync messages to VTEP12 by Rlink, this is same
Forwarding-table item to be synchronized is carried in step message.VTEP12 can detect after the forwarding-table item for receiving VTEP11 synchronizations
On VTEP12 whether there is with it is synchronous come forwarding-table item in VSI (i.e. VSI vpnb) and DR interfaces (i.e. DR interfaces 1), such as
Fruit exists, and just generates and is handed down to the forwarding-table item (such as table 1) carried in the forwarding chip sync message.
It is synchronized however, VTEP11 synchronizes forwarding-table item to VTEP12 by Rlink, on the one hand, Rlink is synchronized
It is to be synchronized based on proprietary protocol, this VTEP equipment needs allowed in DR systems is matched with the proprietary protocol, this is just to turning
Synchronizing for forwarding list item causes limitation；On the other hand, Rlink can be shared by many modules in equipment so that Rlink is not
List item can be only synchronized, can be with transmitting data flow amount, this allows for forwarding-table item and is forwarded together with data traffic, is caused
Congestion greatly reduces the synchronizing speed of forwarding-table item.
In view of this, the application proposes a kind of forwarding-table item synchronous method, needs to synchronize between the VTEP in DR systems
During forwarding-table item, EVPN advertising of route message can be used to synchronize forwarding-table item.
On the one hand, since the network equipment of each company all supports BGP EVPN agreements, using based on BGP EVPN agreements
EVPN advertising of route message synchronize forwarding-table item, will not be again by using Rlink and the network equipment based on proprietary protocol
Unmatched limitation；On the other hand, it is very huge based on the routing amount entrained by the EVPN advertising of route message of BGP EVPN agreements
Greatly, and due to no longer using simultaneously transmitting data flow amount with the Rlink of forwarding-table item come synchronous forwarding-table item, so in synchronization
Congestion can not be generated during forwarding-table item again, so as to substantially increase the synchronization of the forwarding-table item between the VTEP equipment in DR systems
Efficiency.
Referring to Fig. 2, Fig. 2 is a kind of flow chart of forwarding-table item synchronous method shown in one exemplary embodiment of the application.
This method can be applicable to any VTEP equipment in distributed paradigmatic system DR systems.Here it describes for convenience, this is any
VTEP equipment is denoted as the first VTEP, by other any VTEP being connected with the first VTEP in the DR systems belonging to the first VTEP
It is denoted as the 2nd VTEP.
Following for narration is facilitated, EVPN neighbours' advertising of route message that this equipment (the first VTEP) is received is denoted as
First EVPN advertising of route message.
By when the source of the first EVPN advertising of route message is in same distributed paradigmatic system with this equipment, this first
The corresponding forwarding-table item of EVPN advertising of route message, is denoted as the first forwarding-table item.
By when the source of the first EVPN advertising of route message and this equipment are not at same distributed paradigmatic system, this
The corresponding forwarding-table item of one EVPN advertising of route message, is denoted as third forwarding-table item.
This equipment (the first VTEP) is broadcast to the EVPN advertising of route message of EVPN neighbor devices, is denoted as the 2nd EVPN roads
By notice message.
By this equipment (the first VTEP) study to the forwarding-table item of local host MAC Address generation, it is denoted as the second forwarding table
.
Step 201：Receive the first EVPN advertising of route message from opposite end VTEP.
Step 202：Check whether the source of the first EVPN advertising of route message with this equipment is in same distribution
Paradigmatic system.
Step 203：When the source for checking the first EVPN advertising of route message is in same distribution with this equipment
During paradigmatic system, according to the first EVPN advertising of route message, the first forwarding-table item is generated；First forwarding-table item
MAC Address is the MAC Address that the first EVPN advertising of route message carries, and outgoing interface disappears for the first EVPN advertising of route
The DR interfaces carried are ceased, first forwarding-table item is associated with the VXLAN marks that the first EVPN advertising of route message carries
VSI correspond to.
In the embodiment of the present application, the first VTEP can detect the first EVPN advertising of route message source whether with this equipment
In same distributed paradigmatic system.
Specifically, whether the value that the first VTEP can detect the specific field of the first EVPN advertising of route message is default
Value.
If the value of the specific field of the first EVPN advertising of route message is preset value, first can be further detected
Whether the distributed polymerization address that EVPN advertising of route message carries is identical with the distributed polymerization address of this equipment.
If the distributed polymerization address that the first EVPN advertising of route message carries polymerize address with the distribution of this equipment
It is identical, it is determined that the source of the first EVPN advertising of route message is in same distributed paradigmatic system with this equipment.
If the value of the specific field of the first EVPN advertising of route message is not preset value or if the first EVPN roads
It polymerize address with the distribution of this equipment by the distributed polymerization address that notice message carries to differ, it is determined that the first EVPN
The source of advertising of route message is not at same distributed paradigmatic system with this equipment, at this point, the first VTEP can determine this first
EVPN advertising of route message is the common advertising of route message that distal end VTEP is sent.
It should be noted that the above-mentioned detection to the first EVPN advertising of route message, primarily to distinguish this first
EVPN advertising of route message is the EVPN roads that other VTEP (such as the first VTEP) in the DR systems belonging to the first VTEP are sent
The common EVPN advertising of route message sent by notice message or other distal ends VTEP.
In the embodiment of the present application, when the source for determining the first EVPN advertising of route message is in same point with this equipment
During cloth paradigmatic system, the first VTEP can be according to the first EVPN advertising of route message, the first forwarding-table item of generation, this first turn
The MAC Address of forwarding list item is the MAC Address carried in the first EVPN advertising of route message, and outgoing interface is the first EVPN
The DR interfaces carried in advertising of route message, the VXLAN which carries with the first EVPN advertising of route message
Associated VSI is identified to correspond to.First forwarding-table item of generation can be also handed down to forwarding chip by the first VTEP.
Specifically, when generating the first forwarding-table item, the first VTEP can be obtained to be taken in the first EVPN advertising of route message
The corresponding VXLAN marks of the MAC Address of band, the MAC Address and DR interface identifier corresponding with the MAC Address.
Then the first VTEP can check whether be configured in this equipment with the VXLAN corresponding VSI of mark that get and
DR interfaces corresponding with the DR interface identifier got.
Specifically, VXLAN marks and the correspondence of VSI are pre-configured in this equipment, what the first VTEP can be got
VXLAN marks in the correspondence of VXLAN marks and VSI, detect whether exist and the keyword match as keyword
VSI and the first VTEP also need to detect in this equipment whether there is the corresponding DR interfaces of the DR interface identifier.
If exist and the VXLAN corresponding VSI of mark got and the DR interface identifier pair in this equipment
The DR interfaces answered then generate first forwarding-table item；The MAC Address of first forwarding-table item is the MAC that gets
Location, outgoing interface are the DR interfaces got.
If it is not present in this equipment and the VXLAN corresponding VSI of mark that get or there is no the DR to connect
Mouth identifies corresponding DR interfaces, and the first VTEP can record the information carried in the first EVPN advertising of route message, but not generate
Forwarding-table item does not also issue forwarding-table item.
When the source for determining the first EVPN advertising of route message is not at same distributed paradigmatic system with this equipment,
First VTEP can determine that the first EVPN advertising of route message is the common advertising of route message that distal end VTEP is sent, at this point, the
One VTEP can generate and issue forwarding-table item according to normal common EVPN advertising of route message.
Specifically, the first VTEP can generate third forwarding-table item according to the first EVPN advertising of route message.The third turns
The MAC Address of forwarding list item is the MAC Address that the first EVPN advertising of route message carries, and outgoing interface is receives the first EVPN
The VXLAN tunnel interfaces of advertising of route message.
In addition, in the embodiment of the present application, the first VTEP can be also distributed polymerization DR interfaces in study to outgoing interface
After second forwarding-table item, the 2nd EVPN advertising of route message corresponding with second forwarding-table item is constructed, and broadcast described second
EVPN advertising of route message, by second forwarding-table item be synchronized in the distributed paradigmatic system belonging to this equipment with originally setting
Standby other connected VTEP equipment.
When realizing, the first VTEP equipment is in study to the second of the MAC Address of VM to be connected with the first VTEP equipment
After forwarding-table item, the first VTEP can determine whether the outgoing interface of second forwarding-table item is distributed aggregation interface DR interfaces.Such as
The outgoing interface of fruit second forwarding-table item is DR interfaces, then is constructed based on BGP EVPN agreements corresponding with second forwarding-table item
2nd EVPN advertising of route message, and the 2nd EVPN advertising of route message is broadcasted, which is synchronized to this
Other VTEP equipment being connected with this equipment in distributed paradigmatic system belonging to equipment.If first forwarding-table item goes out
Interface is not DR interfaces, then the synchronization without the second forwarding-table item.
When the first VTEP constructs the 2nd EVPN advertising of route message corresponding with second forwarding-table item, the first VTEP can
It is preset value by the value of the specific field of the 2nd EVPN advertising of route message of construction, the 2nd EVPN advertising of route of construction disappears
The distributed polymerization address of this equipment (the first VTEP) is carried in breath and also carries the MAC Address of the second forwarding-table item,
The VXLAN marks of the corresponding VXLAN of VSI of second forwarding-table item, the outgoing interface DR interface identifier of second forwarding-table item.
Then, the 2nd EVPN advertising of route message of the construction can be broadcast to the opposite end of the first VTEP by the first VTEP
VTEP。
The application proposes a kind of forwarding-table item synchronous method, and synchronous forwarding-table item is needed between the VTEP in DR systems
When, EVPN advertising of route message can be used to synchronize forwarding-table item.
On the one hand, since the network equipment of each company all supports BGP EVPN agreements, using based on BGP EVPN agreements
EVPN advertising of route message synchronize forwarding-table item, will not be again by using Rlink and the network equipment based on proprietary protocol
Unmatched limitation；On the other hand, it is very huge based on the routing amount entrained by the EVPN advertising of route message of BGP EVPN agreements
Greatly, and due to no longer using simultaneously transmitting data flow amount with the Rlink of forwarding-table item come synchronous forwarding-table item, so in synchronization
Congestion can not be generated during forwarding-table item again, so as to substantially increase the synchronization of the forwarding-table item between the VTEP equipment in DR systems
Efficiency.
Below by taking networking shown in Fig. 1 as an example, the synchronous method of the forwarding-table item of the embodiment of the present application is carried out in detail
It is bright.
First, lower basic configuration is first introduced.
VTEP11 and VTEP12 composition DR systems, it is assumed that the distributed polymerization address of the DR systems is 1.2.3.4, and
All record has the distribution to polymerize address on VTEP11 and VTEP12.
The correspondence of VSI and VXLAN are equipped on VTEP11 and VTEP12, for example, be configured with VSI vpnb and
The correspondence of VXLAN 100.
In addition, DR system creations have a DR interfaces, the physical port specified on VTEP11 and VTEP12 can add in the DR and connect
Mouthful.It can configure the AC mouths of VSI on the DR interfaces of the establishment.Also, record has DR interfaces, the DR to connect on VTEP11 and VTEP12
The correspondence and DR interfaces of the physical port that mouth includes and AC mouthfuls of correspondence.
For example, it is assumed that DR system creations have a DR interfaces 1, the physics end on the physical port Port11 and VTEP12 of VTEP11
Mouth Port12 can add in the DR interfaces 1.It can configure AC mouthfuls on the DR interfaces 1, the configuration of such as AC100, the AC100 can following institutes
Show：
Assuming that AC100 is represented：The data message entered from physical port ten1/0/1 (being assumed to be Port11), if carried
Tag 10 can then enter vsi vpnb and forward.
In addition, VTEP11 records have the correspondence of DR interfaces 1 and Port11 and the corresponding pass of DR interfaces 1 and AC100
System.VTEP12 records have the correspondence of DR interfaces 1 and Port12 and the correspondence of DR interfaces 1 and AC100.
Being created on VM11 has Port13 on General polymeric interface Aggr1, VM11 and Port14 to add in the General polymeric and connect
In mouth Aggr1.VM11 is connected by General polymeric interface Aggr1 with the distributed aggregation interface DR interfaces 1 in DR systems.
In addition, VTEP11, VTEP12 and VTEP13 can establish EVPN neighborhoods.
Secondly, the synchronous method of the forwarding-table item of lower the embodiment of the present application is discussed in detail.
VM11 can send service traffics by General polymeric interface Aggr1 to above-mentioned DR systems, it is assumed that the service traffics are taken
The VLAN TAG of band are tag10, and the source MAC of the flow is 1-1-1.
In transmission process, VM11 can in the both links of local and VTEP11 and VTEP12 Hash go out a link into
Row flow forwards.It is assumed that link of the link that goes out of Hash between local and VTEP11.The service traffics can be passed through Kazakhstan by VM11
The link wished out, is sent to VTEP11.
VTEP11 can receive the service traffics of VM11 transmissions from above-mentioned DR interfaces 1.VTEP11 can be true according to DR interfaces 1
The AC100 being configured on the fixed DR interfaces 1.By the configuration information in the AC100, VTEP11 can determine what the service traffics carried
Tag 10 matches VSI vpnb.
Then, VTEP11 can learn the source MAC of the service traffics into the forwarding-table item of the VSI vpnb, study
The forwarding-table item arrived is as shown in table 1.
After learning to forwarding-table item as shown in Table 1, whether the outgoing interface that VTEP11 can detect the forwarding-table item is point
Cloth aggregation interface, i.e. DR interfaces, if the outgoing interface of the forwarding-table item is not distributed aggregation interface, not by forwarding-table item
It is synchronized to VTEP12.If the outgoing interface of the forwarding-table item is distributed aggregation interface, the forwarding table that construction is arrived with the study
The corresponding EVPN advertising of route message of item, and broadcast EVPN advertising of route message, EVPN routings to the opposite end VTEP of VTEP11
Notice message can be used for synchronizing forwarding-table item as shown in Table 1.
In this example, VTEP11 is DR interfaces 1 in the outgoing interface for determining the forwarding-table item, during distributed aggregation interface,
VTEP11 can be constructed and the matched EVPN advertising of route message of the forwarding-table item.This is constructed of in EVPN advertising of route message
Specific field is preset value, and carries the distributed polymerization address of this equipment (VTEP11).
Wherein, the distributed polymerization address of the above-mentioned specific field and this equipment can be carried on above-mentioned EVPN advertising of route
In the extended community attribute of message.The extended community attribute is as shown in table 2：
Table 2
Wherein, above-mentioned the type field represents extended community attribute type, which can be above-mentioned specific field,
0x07 can be above-mentioned preset value.When the value of the type field is 0x07, show the EVPN advertising of route message for distribution
Formula paradigmatic system, the EVPN advertising of route message sent such as the VTEP in DR systems.
Above-mentioned Reserved fields can be used as reserved field.
Above-mentioned EVPN gourd address fields, to fill in the distribution for the VTEP for sending the EVPN advertising of route message
Formula polymerize address.In this example, which fills in the distributed polymerization address of VTEP11, such as 1.2.3.4.
In addition, the EVPN advertising of route message also carries MAC Address (such as MAC Address 1- of the forwarding-table item shown in table 1
1-1), the outgoing interface DR of the corresponding VXLAN marks (i.e. VXLAN 100) of VSI and the forwarding-table item in the forwarding-table item connects
The DR interface identifier (i.e. DR interfaces 1) of mouth 1.
VTEP11 can broadcast EVPN advertising of route message to the opposite end VTEP (such as VTEP12, VTEP13) of this equipment.
In addition, VTEP11 can also receive the EVPN advertising of route message of opposite end VTEP transmissions, for example, VTEP11 can be received
The EVPN advertising of route message sent to VTEP12 or VTEP13.
VTEP11 can perform step 301 to step 304.
Step 301：VTEP11 receives the EVPN advertising of route message of opposite end VTEP broadcast.
Step 302：VTEP11 can detect whether the source of EVPN advertising of route message received is in this equipment
Same distribution paradigmatic system.
When realizing, whether the specific field that VTEP11 can detect the EVPN advertising of route message is preset value.For example,
VTEP11 can check whether the value of the type field in the extended community attribute in the EVPN advertising of route message is 0x07.
If VTEP11 detects that the specific field of the EVPN advertising of route message is not preset value, it is determined that the EVPN roads
Same distributed paradigmatic system is not at by the source and this equipment of notice message.
If VTEP11 detects that the specific field of the EVPN advertising of route message is preset value, VTEP11 can be examined further
Whether identical with the distributed polymerization address of this equipment survey the distributed polymerization address carried in the EVPN advertising of route message.
If VTEP11 detects the distributed polymerization address carried in the EVPN advertising of route message and point of this equipment
Cloth polymerization address differs, then can determine that the source of the EVPN advertising of route message and this equipment are not at same distribution and gather
Collaboration is united.
If VTEP11 detects the distributed polymerization address carried in the EVPN advertising of route message and point of this equipment
Cloth polymerization address is identical, then can determine that the source of the EVPN advertising of route message and this equipment are in same distribution and polymerize system
System.
In this example, VTEP11 detects that the specific field of the EVPN advertising of route message is preset value, and detect
The distributed polymerization address 1.2.3.4 carried in the EVPN advertising of route message polymerize address with the distribution of this equipment
1.2.3.4 it is identical, so VTEP11 can determine that the source of the EVPN advertising of route message and this equipment are in same distributed poly-
Collaboration is united.
Step 303：When VTEP11 determines that the source of the EVPN advertising of route message and this equipment are in same distributed poly-
When collaboration is united, VTEP11 can generate forwarding-table item corresponding with the EVPN advertising of route message.The MAC Address of the forwarding-table item is
The MAC Address carried in the described EVPN advertising of route message, outgoing interface is carries and institute in the EVPN advertising of route message
State the corresponding DR interfaces of MAC Address.Associated by the VXLAN marks carried in the forwarding-table item and the EVPN advertising of route message
VSI is corresponded to.
When realizing, VTEP11 can obtain MAC Address (the i.e. MAC Address 1-1- carried in the EVPN advertising of route message
1), the corresponding VXLAN marks (VXLAN 100) of the MAC Address and corresponding DR interface identifier (the i.e. DR interfaces of the MAC Address
1)。
Then VTEP11 can detect to whether there is in this equipment identifies (i.e. VXLAN 100) with the VXLAN got
Corresponding VSI and the corresponding DR interfaces of DR interface identifier (DR interfaces 1) got.
Specifically, VTEP11 the VXLAN that is locally configured in VSI correspondences, detect whether there is in this equipment with
Whether the 100 corresponding VSI and VTEP11 of VXLAN can detect locally has created DR interfaces 1.
If VTEP11 is detected in this equipment in the presence of corresponding with the VXLAN marks (i.e. VXLAN 100) got
VSI (VSI vpnb) and the corresponding DR interfaces of the DR interface identifier (DR interfaces 1), then can generate the VSI (VSI
Vpnb forwarding-table item), and the forwarding-table item of generation is handed down to forwarding chip.
The forwarding-table item of the VSI vpnb is as shown in table 3.The MAC Address of the forwarding-table item for the above-mentioned MAC got (i.e.
MAC Address 1-1-1), outgoing interface is the DR interfaces (such as DR interfaces 1) got.
| MAC Address | State | VSI titles | Outgoing interface |
| 1-1-1 | EVPN | vpnb | DR interfaces 1 |
Table 3
Wherein, the EVPN on 3 state of table, one column represents that this forwarding-table item is that EVPN advertising of route message synchronizations come.
If VTEP11 detect be not present in this equipment with the VXLAN corresponding VSI of mark that get and
The corresponding DR interfaces of the DR interface identifier.VTEP11 can record the routing letter carried in the EVPN advertising of route message at this time
Breath, but forwarding-table item is not generated, forwarding-table item corresponding with the routing iinformation is not issued yet.
Step 304：When VTEP11 determines that the source of the EVPN advertising of route message and this equipment are not at same distribution
During paradigmatic system, VTEP11 can generate the corresponding forwarding-table item of EVPN advertising of route message, and the MAC Address of the forwarding-table item is
The MAC Address that the EVPN advertising of route message carries, outgoing interface is the VXLAN tunnels for receiving the EVPN advertising of route message
Interface.
In the embodiment of the present application, when VTPE11 determines that the specific field of the EVPN advertising of route message is not preset value,
Or the distributed polymerization address carried in the EVPN advertising of route message polymerize address with the distribution of this equipment and differs,
VTEP11 can generate the corresponding forwarding-table item of EVPN advertising of route message, and the MAC Address of the forwarding-table item is the EVPN roads
The MAC Address carried by notice message, outgoing interface is the VXLAN tunnel interfaces for receiving the EVPN advertising of route message.
The application proposes a kind of forwarding-table item synchronous method, and synchronous forwarding-table item is needed between the VTEP in DR systems
When, EVPN advertising of route message can be used to synchronize forwarding-table item.
On the one hand, since the network equipment of each company all supports BGP EVPN agreements, using based on BGP EVPN agreements
EVPN advertising of route message synchronize forwarding-table item, will not be again by using Rlink and the network equipment based on proprietary protocol
Unmatched limitation；On the other hand, it is very huge based on the routing amount entrained by the EVPN advertising of route message of BGP EVPN agreements
Greatly, and due to no longer using simultaneously transmitting data flow amount with the Rlink of forwarding-table item come synchronous forwarding-table item, so in synchronization
Congestion can not be generated during forwarding-table item again, so as to substantially increase the synchronization of the forwarding-table item between the VTEP equipment in DR systems
Efficiency.
Referring to Fig. 3, the application also provides equipment where a kind of forwarding-table item synchronizing device, such as the hardware structure of VTEP equipment
Figure, the equipment include：Communication interface 301, processor 302, memory 303 and bus 304；Wherein, communication interface 301, processing
Device 302 and memory 303 complete mutual communication by bus 304.
Wherein, communication interface 301, are used for and server communication.Processor 302 can be a CPU, and memory 303 can
To be nonvolatile memory (non-volatile memory), and patrolling for forwarding-table item synchronization is stored in memory 303
Instruction is collected, processor 302 can perform the logical order that the forwarding-table item stored in memory 303 synchronizes, to realize above-mentioned turn
The function that forwarding list item synchronizes.
So far, hardware configuration description shown in Fig. 3 is completed.
It please refers to Fig.4, Fig. 4 is a kind of block diagram of forwarding-table item synchronizing device shown in one exemplary embodiment of the application.
The device can be applied to any VTEP in DR systems.The device may include unit as follows.
Receiving unit 401, for receiving the first EVPN advertising of route message from opposite end VTEP；
Inspection unit 402, for checking whether the source of the first EVPN advertising of route message is in same with this equipment
One distributed paradigmatic system；
Generation unit 403, for being in same with this equipment when the source for checking the first EVPN advertising of route message
During one distributed paradigmatic system, according to the first EVPN advertising of route message, the first forwarding-table item is generated；First forwarding
The MAC Address of list item is the MAC Address that the first EVPN advertising of route message carries, and outgoing interface is route for the first EVPN
The DR interfaces that notice message carries, first forwarding-table item are marked with the VXLAN that the first EVPN advertising of route message carries
Know associated VSI to correspond to.
Optionally, the inspection unit 402, specifically for detecting the specific field of the first EVPN advertising of route message
Value whether be the distributed polymerization address of preset value and the first EVPN advertising of route message and the distribution of this equipment
Whether formula polymerization address is identical.
Optionally, described device further includes：
Unit 404, for learning to outgoing interface to be construction after distribution polymerize the second forwarding-table item of DR interfaces
The second Ethernet Virtual Private Network EVPN advertising of route message corresponding with second forwarding-table item；
For broadcasting the 2nd EVPN advertising of route message, which is synchronized to for radio unit 405
Other VTEP equipment being connected with this equipment in distributed paradigmatic system belonging to this equipment.
Optionally, the generation unit 403, specifically for obtaining what is carried in the first EVPN advertising of route message
MAC Address, VXLAN marks and DR interface identifier；It detects to whether there is in this equipment and be identified with the VXLAN got
Corresponding VSI and the corresponding DR interfaces of the DR interface identifier got；If in the presence of the first forwarding-table item is generated；It is described
The MAC Address of first forwarding-table item is the MAC Address got, and outgoing interface is the DR interfaces got, described
One forwarding-table item is corresponding with the associated VSI of VXLAN marks got.
Optionally, the generation unit 403, if the designated word also particularly useful for the first EVPN advertising of route message
The value of section is not distributed polymerization address that the preset value or the first EVPN advertising of route message carry with originally setting
Standby distributed polymerization address differs, then according to the first EVPN advertising of route message, generates third forwarding-table item；Wherein, institute
The MAC Address for stating third forwarding-table item is the MAC Address that the first EVPN advertising of route message carries, and outgoing interface should to receive
The VXLAN tunnel interfaces of first EVPN advertising of route message.
The function of each unit and the realization process of effect specifically refer to and step are corresponded in the above method in above device
Realization process, details are not described herein.
For device embodiment, since it corresponds essentially to embodiment of the method, so related part is referring to method reality
Apply the part explanation of example.The apparatus embodiments described above are merely exemplary, wherein described be used as separating component
The unit of explanation may or may not be physically separate, and the component shown as unit can be or can also
It is not physical unit, you can be located at a place or can also be distributed in multiple network element.It can be according to reality
It needs that some or all of module therein is selected to realize the purpose of 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 foregoing is merely the preferred embodiment of the application, not limiting the application, all essences in the application
God and any modification, equivalent substitution, improvement and etc. within principle, done, should be included within the scope of the application protection.
Claims (10)
1. a kind of forwarding-table item synchronous method, which is characterized in that this method was applied in distributed paradigmatic system any expands
Virtual Local Area Network endpoint of a tunnel VTEP equipment is opened up, including：
Receive the first Ethernet Virtual Private Network EVPN advertising of route message from opposite end VTEP；
Check whether the source of the first EVPN advertising of route message with this equipment is in same distributed paradigmatic system；
When the source for checking the first EVPN advertising of route message is in same distributed paradigmatic system with this equipment, according to
According to the first EVPN advertising of route message, the first forwarding-table item is generated；The medium access control MAC of first forwarding-table item
Address is the MAC Address that the first EVPN advertising of route message carries, and outgoing interface is the first EVPN advertising of route message
The distributed polymerization DR interfaces of carrying, first forwarding-table item carries expansible with the first EVPN advertising of route message
Virtual LAN VXLAN identifies associated virtual switch instance VSI and corresponds to.
2. according to the method described in claim 1, it is characterized in that, described check the first EVPN advertising of route message
Source is in same distributed paradigmatic system with this equipment, including：
Whether the value for detecting the specific field of the first EVPN advertising of route message is preset value and the first EVPN
Whether the distributed polymerization address of advertising of route message with the distributed of this equipment polymerize address identical.
3. method according to claim 1 or 2, which is characterized in that the method further includes：
After the second forwarding-table item to outgoing interface for distributed polymerization DR interfaces is learnt, construction is corresponding with second forwarding-table item
The 2nd EVPN advertising of route message；
The 2nd EVPN advertising of route message is broadcasted, the distribution which is synchronized to belonging to this equipment is gathered
Other VTEP equipment being connected with this equipment in collaboration system.
It is 4. according to the method described in claim 1, it is characterized in that, described according to the first EVPN advertising of route message, life
Into the first forwarding-table item, including：
Obtain the MAC Address carried in the first EVPN advertising of route message, VXLAN marks and DR interface identifier；
It detects to whether there is in this equipment and be connect with the VXLAN corresponding VSI of mark got and the DR got
Mouth identifies corresponding DR interfaces；
If in the presence of the first forwarding-table item is generated；The MAC Address of first forwarding-table item is the MAC Address got, is gone out
Interface is the DR interfaces got, first forwarding-table item and associated VSI pairs of the VXLAN marks got
It should.
5. according to the method described in claim 1, it is characterized in that, the method further includes：
If the value of the specific field of the first EVPN advertising of route message is not the preset value or described first
The distributed polymerization address that EVPN advertising of route message carries polymerize address with the distribution of this equipment and differs, then according to first
EVPN advertising of route message generates third forwarding-table item；Wherein, the MAC Address of the third forwarding-table item is described first
The MAC Address that EVPN advertising of route message carries, outgoing interface are that the VXLAN tunnels of the first EVPN advertising of route message of reception connect
Mouthful.
6. a kind of forwarding-table item synchronizing device, which is characterized in that the device was applied in distributed paradigmatic system any expands
Virtual Local Area Network endpoint of a tunnel VTEP equipment is opened up, including：
Receiving unit, for receiving the first EVPN advertising of route message from opposite end VTEP；
Inspection unit, for checking whether the source of the first EVPN advertising of route message is in same distribution with this equipment
Paradigmatic system；
Generation unit checks that the source of the first EVPN advertising of route message is in same distribution with this equipment for working as
During paradigmatic system, according to the first EVPN advertising of route message, the first forwarding-table item is generated；Jie of first forwarding-table item
Matter access control MAC addresses are the MAC Address that the first EVPN advertising of route message carries, and outgoing interface is the first EVPN
The distributed polymerization DR interfaces that advertising of route message carries, first forwarding-table item and the first EVPN advertising of route message
The expansible virtual LAN VXLAN carried identifies associated virtual switch instance VSI and corresponds to.
7. device according to claim 6, which is characterized in that the inspection unit, specifically for detection described first
Whether the value of the specific field of EVPN advertising of route message is preset value and point of the first EVPN advertising of route message
Whether cloth to polymerize address identical if polymerizeing address and this equipment distributed.
8. the device described according to claim 6 or 7, which is characterized in that described device further includes：
Unit, for after the second forwarding-table item to outgoing interface for distributed polymerization DR interfaces is learnt, construction with this
The corresponding second Ethernet Virtual Private Network EVPN advertising of route message of two forwarding-table items；
Second forwarding-table item for broadcasting the 2nd EVPN advertising of route message, is synchronized to this equipment by radio unit
Other VTEP equipment being connected with this equipment in affiliated distributed paradigmatic system.
9. device according to claim 6, which is characterized in that the generation unit, specifically for obtaining described first
MAC Address, VXLAN marks and the DR interface identifier carried in EVPN advertising of route message；It detects and whether there is in this equipment
With the VXLAN corresponding VSI of mark got and the corresponding DR interfaces of the DR interface identifier got；If it deposits
Generating the first forwarding-table item；The MAC Address of first forwarding-table item is the MAC Address got, and outgoing interface is obtains
The DR interfaces got, first forwarding-table item are corresponding with the associated VSI of VXLAN marks got.
10. device according to claim 6, which is characterized in that the generation unit, if also particularly useful for described first
The value of the specific field of EVPN advertising of route message is not that the preset value or the first EVPN advertising of route message are taken
The distributed polymerization address of band polymerize address with the distribution of this equipment and differs, then the first EVPN advertising of route message of foundation,
Generate third forwarding-table item；Wherein, the MAC Address of the third forwarding-table item is carried for the first EVPN advertising of route message
MAC Address, outgoing interface be receive the first EVPN advertising of route message VXLAN tunnel interfaces.
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