CN110351135B - Network equipment configuration method and device in multiple DCs - Google Patents

Network equipment configuration method and device in multiple DCs Download PDF

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Publication number
CN110351135B
CN110351135B CN201910580290.4A CN201910580290A CN110351135B CN 110351135 B CN110351135 B CN 110351135B CN 201910580290 A CN201910580290 A CN 201910580290A CN 110351135 B CN110351135 B CN 110351135B
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interworking
instruction
vrouter
vruter
identifier
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CN110351135A (en
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于燕敏
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New H3C Technologies Co Ltd Hefei Branch
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New H3C Technologies Co Ltd Hefei Branch
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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
    • 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]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0803—Configuration setting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/02—Topology update or discovery
    • H04L45/04—Interdomain routing, e.g. hierarchical routing

Abstract

The application provides a method and a device for configuring network equipment in multiple DCs, which enable an SDN controller to determine whether interworking vRouter is established in Border equipment at a first DC or not according to an interworking instruction when the SDN controller receives the interworking instruction for indicating that the first vRouter at the first DC and a second vRouter at a second DC carry out service interworking; and if the interworking vRouter is established, issuing a first configuration instruction to the Border device, wherein the first configuration instruction comprises a network mapping instruction and a binding instruction, so that the Border device configures the mapping relation between the VLAN identifier and the VXLAN tunnel identifier on the interworking vRouter according to the network mapping instruction, and binds the VPN identifier to which the interworking vRouter belongs and the VXLAN tunnel identifier according to the binding instruction.

Description

Network equipment configuration method and device in multiple DCs
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for configuring network devices in multiple DCs.
Background
The control plane in EVPN (Ethernet Virtual Private Network) networking is mainly managed by an SDN (Software Defined Network) controller, which may be used to control a Virtual Overlay Network, to carry the Overlay Network on top of a physical Network of a DC (Internet Data Center), and to provide users with on-demand assignment of the Overlay Network.
In an Overlay Network, in order to satisfy that tenants in different DCs can perform interworking, an SDN controller is usually used to implement interworking requirements, but in the related art, when a Virtual router vruter of a local tenant needs to establish a plurality of interworking services across the DCs, the SDN controller in the DC usually generates a corresponding interworking vruter for each interworking service and configures a corresponding VPN (Virtual Private Network), so that the vruter of the same local tenant in a boundary Border device occupies a large amount of VPN resources, and information redundancy is also caused by interaction of routing information between the interworking vruters.
Disclosure of Invention
In view of this, the present application provides a method and an apparatus for configuring a network device in multiple DCs, so as to avoid the problems of route redundancy and resource waste when tenants communicate with each other.
Specifically, the method is realized through the following technical scheme:
according to a first aspect of embodiments of the present application, there is provided a method for configuring a network device in multiple DCs, the method being applied to an SDN controller in a first DC, the first DC including a first voruter and Border device, the method including:
receiving an intercommunication instruction, wherein the intercommunication instruction is used for indicating the first vRouter to carry out service intercommunication with a second vRouter in a second DC;
determining whether an interworking vRouter is established in the Border device according to the interworking instruction, wherein when the first vRouter performs service interworking with a third vRouter at a third DC in advance, the interworking vRouter establishes vLAN tunnel connection with a Switch where the first vRouter is located;
and if the interworking vRouter is created, issuing a first configuration instruction to the Border device, wherein the first configuration instruction comprises a network mapping instruction and a binding instruction, so that the Border device configures the mapping relation between the VLAN identifier and the VXLAN tunnel identifier on the interworking vRouter according to the network mapping instruction, and binds the VPN identifier to which the interworking vRouter belongs and the VXLAN tunnel identifier according to the binding instruction.
As an embodiment, if the SDN controller has not created an interworking vruter in the Border device, the method further includes:
issuing a second configuration instruction to the Border device, where the second configuration instruction includes a VPN identifier configured for the interworking vRouter, so that the Border device creates the interworking vRouter and configures the VPN identifier to which the interworking vRouter belongs;
and issuing a third configuration instruction to the Border equipment, wherein the third configuration instruction comprises a network mapping instruction and a binding instruction, so that the Border equipment configures the mapping relation between the VLAN identifier and the VXLAN tunnel identifier on the interworking vRouter according to the network mapping instruction, and binds the VPN identifier to which the interworking vRouter belongs and the VXLAN tunnel identifier according to the binding instruction.
As an embodiment, the determining whether an interworking vruterer has been created in the Border device includes:
checking all configuration instructions issued to the Border equipment, and judging whether a configuration instruction for configuring VPN identification for interworking vRouter exists in all the configuration instructions;
if yes, determining that intercommunication vRouter is established in the Border equipment;
if not, determining that the interworking vRouter is not created in the Border device.
As an embodiment, before issuing the first configuration instruction or the third configuration instruction to the Border device, the method further includes:
acquiring unoccupied target VLAN identifications from a local VLAN identification pool, and acquiring unoccupied target VXLAN tunnel identifications from a local VXLAN tunnel identification pool; establishing a mapping relation between the target VLAN identification and the target VXLAN tunnel identification;
the issuing of the first configuration instruction or the third configuration instruction to the Border device includes:
and issuing a first configuration instruction or a third configuration instruction to the Border device, wherein the first configuration instruction or the third configuration instruction comprises a network mapping instruction and a binding instruction, so that the Border device configures the mapping relation between the target VLAN identifier and the target VXLAN tunnel identifier on the interworking vRouter according to the network mapping instruction, and binds the VPN identifier to which the interworking vRouter belongs and the target VXLAN tunnel identifier according to the binding instruction.
According to a second aspect of embodiments of the present application, there is provided a network device configuration apparatus in multiple DCs, the apparatus being applied to an SDN controller in a first DC, the first DC including a first voruter and Border device, the apparatus including:
a receiving unit, configured to receive an interworking instruction, where the interworking instruction is used to instruct the first vRouter to perform service interworking with a second vRouter in a second DC;
a determining unit, configured to determine, according to the interworking instruction, whether interworking vruter has been created in the Border device, where when the first vruter performs service interworking with a third vruter in a third DC in advance, the interworking vruter establishes VXLAN tunnel connection with a Switch where the first vruter is located;
and the issuing unit is used for issuing a first configuration instruction to the Border device if the interworking vRouter is created, wherein the first configuration instruction comprises a network mapping instruction and a binding instruction, so that the Border device configures the mapping relation between the VLAN identifier and the VXLAN tunnel identifier on the interworking vRouter according to the network mapping instruction, and binds the VPN identifier to which the interworking vRouter belongs and the VXLAN tunnel identifier according to the binding instruction.
As an embodiment, the issuing unit is further configured to issue a second configuration instruction to the Border device if the SDN controller has not created an interworking vruter in the Border device, where the second configuration instruction includes a VPN identifier configured for the interworking vruter, so that the Border device creates the interworking vruter and configures a VPN identifier to which the interworking vruter belongs; and issuing a third configuration instruction to the Border equipment, wherein the third configuration instruction comprises a network mapping instruction and a binding instruction, so that the Border equipment configures the mapping relation between the VLAN identifier and the VXLAN tunnel identifier on the interworking vRouter according to the network mapping instruction, and binds the VPN identifier to which the interworking vRouter belongs and the VXLAN tunnel identifier according to the binding instruction.
As an embodiment, the determining unit is configured to check all configuration instructions that have been issued to the Border device, and determine whether a configuration instruction for configuring a VPN identifier for an interworking router exists in all the configuration instructions; if yes, determining that intercommunication vRouter is established in the Border equipment; if not, determining that the interworking vRouter is not created in the Border device.
As an embodiment, the apparatus further comprises:
the searching unit is used for acquiring unoccupied target VLAN identifications from a local VLAN identification pool and acquiring unoccupied target VXLAN tunnel identifications from a local VXLAN tunnel identification pool before issuing the first configuration instruction or the third configuration instruction to the Border device; establishing a mapping relation between the target VLAN identification and the target VXLAN tunnel identification;
the issuing unit is specifically configured to issue a first configuration instruction or a third configuration instruction to the Border device, where the first configuration instruction or the third configuration instruction includes a network mapping instruction and a binding instruction, so that the Border device configures, according to the network mapping instruction, a mapping relationship between the target VLAN identifier and the target VXLAN tunnel identifier on the interworking vruter, and binds, according to the binding instruction, a VPN identifier to which the interworking vruter belongs and the target VXLAN tunnel identifier.
According to a third aspect of embodiments of the present application, there is provided a network device comprising a processor, a communication interface, a memory, and a communication bus;
the processor, the communication interface and the memory are communicated with each other through the communication bus;
the memory is used for storing a computer program;
the processor is configured to execute the computer program stored in the memory, and when the processor executes the computer program, the processor implements the steps of the network device configuration method in any of the multiple DCs.
According to a fourth aspect of embodiments herein, there is provided a computer readable storage medium having stored therein a computer program which, when executed by a processor, implements the steps of the network device configuration method in any of the multiple DCs.
In summary, according to the present application, when receiving an interworking instruction for instructing service interworking between a first vruter at a first DC and a second vruter at a second DC, an SDN controller may determine, according to the interworking instruction, whether an interworking vruter has been created in a Border device at the first DC, and when the first vruter performs service interworking with a third vruter at a third DC in advance, the interworking vruter establishes VXLAN tunnel connection with a Switch in which the first vruter is located; and if the interworking vRouter is created, issuing a first configuration instruction to the Border device, wherein the first configuration instruction comprises a network mapping instruction and a binding instruction, so that the Border device configures the mapping relation between the VLAN identifier and the VXLAN tunnel identifier on the interworking vRouter according to the network mapping instruction, and binds the VPN identifier to which the interworking vRouter belongs and the VXLAN tunnel identifier according to the binding instruction.
Compared with the prior art, the interworking vRouter is established for each interworking service of the first vRouter of the local tenant, the interworking vRouter can be aggregated into one interworking vRouter, mapping relations between different VLAN identifiers and VXLAN tunnel identifiers are configured for different interworking services, and different VXLAN tunnel identifiers are bound to the same VPN, so that occupation of VPN resources corresponding to the interworking vRouter in Border equipment is reduced, and only one interworking vRouter in the Border equipment is connected with the first vRouter of the tenant, so that the first vRouter only needs to issue routing information to the interworking vRouter once, and further redundancy of the routing information can be reduced.
Drawings
Fig. 1 is a schematic diagram of EVPN networking in an exemplary embodiment of the present application;
FIG. 2 is a process flow diagram of a method for configuring network devices in multiple DCs in an exemplary embodiment of the present application;
FIG. 3 is a schematic diagram of another EVPN networking in an exemplary embodiment of the present application;
fig. 4 is a logical block diagram of a network device configuration apparatus in multiple DCs in an exemplary embodiment of the present application;
fig. 5 is a hardware block diagram of a network device in an exemplary embodiment of the present application.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
Please refer to fig. 1, which is a schematic diagram of an EVPN networking in an exemplary embodiment of the present application, where a local DC in the networking includes a Switch1, a Border Router device and an AR (Access Router), where the Switch1 and the Border Router device are Gateway devices in a distributed EVPN, the AR is an Access Switch device of the DC, and the AR may establish BGP (Border Gateway Protocol) neighbors with the Border Router device and establish connections with other DCs through DCI (Data Center Interconnection) high-speed Interconnection network channels.
The vruter in the local DC may establish interworking services with vruters in other DCs, such as the local tenant in shanghai DC shown in fig. 1, the local tenant may respectively establish interworking services with vruter 1 of the tenant in tianjin DC, vruter 2, vruter 3 of the tenant in guangzhou DC, and vruter 4 of the tenant in beijing DC. The networking structures in other DCs are similar to the networking structure in the local DC, and here, the networking structures in other DCs are omitted, and only the vRouter carrying tenant services and the interworking vRouter are shown.
The route interaction process among the devices in the local DC specifically includes: the route learned by the AR from other DCs is distributed to the Border device through eBGP (External Border Gateway Protocol), and the route learned by the AR is distributed to the Switch1 through EVPN, so that the Switch1 generates a route to vRouter in other DCs; meanwhile, according to a certain EVPN routing strategy, the Border device may introduce an intranet route from Switch1 issued by the EVPN, and issue the intranet route to the AR through eBGP, so that the AR issues a relevant route to other DCs through a routing protocol.
In the prior art, an SDN controller is provided in each DC to control and deploy network forwarding, and the SDN controller generally configures an interworking vruter for each interworking service and sets a corresponding VPN for each interworking vruter. For example, when the SDN controller in the shanghai DC issues a control instruction for interworking between vruter 10 in the shanghai DC and vruter 1 in tianjin DC, the SDN controller in the shanghai DC issues a configuration instruction for creating vruter 101 on the Border device and issues related configurations (for example, mapping of VPN, VLAN identifier to VXLAN tunnel identifier, and the like), so that the Border device creates vruter 101 and establishes connection with vruter 10 on Switch1, and the issue of the route is completed based on the above route interaction process.
Because VPN resources on the Border device are limited, the number of interworking vroters that can be created on the Border device is limited; and when the intercommunication of the vRouter across the DC is realized, the intercommunicated vRouter on the Border equipment needs to learn a route of vRouter10, so that under the condition that more intercommunicated services exist, a large amount of route redundancy occurs on the Border equipment, and the situations of route redundancy and VPN resource waste are caused.
In order to solve the problems in the prior art, the present application provides a method and an apparatus for configuring a network device in multiple DCs, which may enable an SDN controller to determine, according to an interworking instruction when receiving the interworking instruction for instructing a first vruter at a first DC and a second vruter at a second DC to perform service interworking, whether the interworking vruter has been created in a Border device at the first DC, and when the first vruter performs service interworking with a third vruter at a third DC in advance, the interworking vruter establishes a lan tunnel connection with a Switch1 where the first vruter is located; and if the interworking vRouter is created, issuing a first configuration instruction to the Border device, wherein the first configuration instruction comprises a network mapping instruction and a binding instruction, so that the Border device configures the mapping relation between the VLAN identifier and the VXLAN tunnel identifier on the interworking vRouter according to the network mapping instruction, and binds the VPN identifier to which the interworking vRouter belongs and the VXLAN tunnel identifier according to the binding instruction.
Compared with the prior art, the interworking vRouter is established for each interworking service of the first vRouter of the local tenant, the interworking vRouter can be aggregated into one interworking vRouter, mapping relations between different VLAN identifiers and VXLAN tunnel identifiers are configured for different interworking services, and different VXLAN tunnel identifiers are bound to the same VPN, so that occupation of VPN resources corresponding to the interworking vRouter in Border equipment is reduced, and only one interworking vRouter in the Border equipment is connected with the first vRouter of the tenant, so that the first vRouter only needs to issue routing information to the interworking vRouter once, and further redundancy of the routing information can be reduced.
Referring to fig. 2, a processing flow diagram of a method for configuring a network device in multiple DCs in an exemplary embodiment of the present application is applied to an SDN controller in a first DC, where the first DC includes a first vruter and a Border device, and the method includes:
step 201, receiving an interworking instruction, where the interworking instruction is used to instruct the first vRouter to perform service interworking with a second vRouter in a second DC;
in this embodiment, a user may issue, in an SDN controller of a first DC, an interworking instruction configured to perform service interworking between a first vruter in the first DC and a second vruter in a second DC, where the first vruter is used to deploy a service of a first tenant, the second vruter is used to deploy a service of a second tenant, the first DC and the second DC are different, and the first tenant and the second tenant may be the same tenant or different tenants. For example, as shown in fig. 3, when the first vruter is vruter 10 in shanghai DC, the second vruter may be vruter 1 in tianjin DC, or vruter in other DC.
Step 202, determining whether an interworking vruter has been created in the Border device according to the interworking instruction, wherein when the first vruter performs service interworking with a third vruter at a third DC in advance, the interworking vruter establishes VXLAN tunnel connection with a Switch where the first vruter is located;
in this embodiment, after determining, according to the interworking instruction, that the first vruter needs to perform service interworking with the second vruter, the SDN controller may further determine whether an interworking vruter has been created in the Border device, where when the first vruter performs service interworking with a third vruter in a third DC in advance, the interworking vruter establishes VXLAN tunnel connection with a Switch in which the first vruter is located.
The third vruter is configured to deploy services of a third tenant, where the third DC is different from the first DC, the third DC may be the same as the second DC or different from the second DC, and the third vruter is different from the second vruter.
For example, as shown in fig. 3, when the first vruter is vruter 10 in shanghai DC and the second vruter is vruter 1 in tianjin DC, the third vruter may be vruter 2 in tianjin DC or vruter in other DC.
It should be noted that, when the first DC includes multiple Border devices, after the SDN controller determines the requirement of the interworking service, a designated Border device may be allocated to the interworking service for establishing interworking voruter, where the designated Border device may be a Border device selected by the SDN controller from the Border devices deployed by the first DC as the designated Border device according to a load balancing policy or according to a sequential allocation policy.
As an embodiment, when determining whether an interworking vruter has been created in the Border device, the SDN controller may check all configuration instructions recorded by the SDN controller and issued to the Border device, and determine whether a configuration instruction configuring a VPN identifier for the interworking vruter exists in all the configuration instructions; if yes, determining that intercommunication vRouter is established in the Border equipment; if not, determining that the interworking vRouter is not created in the Border device.
Step 203, if the interworking vruter is created, a first configuration instruction is issued to the Border device, where the first configuration instruction includes a network mapping instruction and a binding instruction, so that the Border device configures a mapping relationship between a VLAN identifier and a VXLAN tunnel identifier on the interworking vruter according to the network mapping instruction, and binds a VPN identifier to which the interworking vruter belongs and the VXLAN tunnel identifier according to the binding instruction.
In this embodiment, if an SDN controller creates an interworking vruter in the Border device, a first configuration instruction is issued to the Border device, where the first configuration instruction includes a Network mapping indication and a binding indication, so that the Border device configures, according to the Network mapping indication, a mapping relationship between a VLAN (Virtual Local Area Network) identifier and a VXLAN (Virtual extended Local Area Network) tunnel identifier on the interworking vruter, and binds, according to the binding indication, a VPN identifier to which the interworking vruter belongs and the VXLAN tunnel identifier.
It should be noted that, because only one physical link exists between the Border device where the interworking vruter is located and the Switch where the first vruter is located, when different interworking services need to be sent from the Border device where the interworking vruter is located to the Switch where the first vruter is located, different VXLAN tunnel identifiers can be encapsulated by different service packets, thereby distinguishing the different interworking services.
For example, when the SDN controller configures interworking service between vruter 10 in shanghai DC and vruter 1 in tianjin DC, it may select a target VLAN ID as VLAN 100 and a target VXLAN tunnel ID as VXLAN 100, and bind a VPN ID to which the interworking vruter belongs to the target VXLAN tunnel ID, for example, a VPN to which interworking vruter 1 on Border1 device in fig. 3 belongs is VPN10 and VXLAN tunnel 100, and then send the configuration to an AC port of interworking vruter 1 in Border1 device through a first configuration instruction, so as to implement service packet entering from the AC port, and if the configuration carries VLAN tag 100, the configuration is forwarded to the VXLAN tunnel ID 100 of VLAN tag 100 mapped to a binding vsi (Virtual Switch Interface ) VXLAN tunnel ID 10, that is to complete mapping of VLAN tag 100 to a packet of encapsulation lan tunnel ID 100; when the SDN controller configures the interworking service between vruter 10 in the shanghai DC and vruter 4 in the beijing DC, a target VLAN ID may be selected as VLAN400 and a target VXLAN tunnel ID may be selected as VXLAN 400, and a VPN ID to which the interworking vruter belongs may be bound to the target VXLAN tunnel ID, for example, a VPN to which the interworking vruter 1 on the Border1 device in fig. 3 belongs may be bound to VPN10 and VXLAN tunnel 400, and then the configuration is issued to an AC port of the interworking vruter 1 in the Border1 device through a first configuration instruction, so that a service packet entering from the AC port may be implemented, and if carrying vsitg 400, the service packet may be forwarded by using pn VLAN ID400 mapped to the vsi VXLAN tunnel 10, that is, a packet mapping from the vsitn VLAN400 to the encapsulated VXLAN tunnel ID400 is completed.
Since the prior art directly creates an interworking vRouter for the interworking service when creating the interworking between the first vRouter and the second vRouter, the present application may first determine whether the SDN controller has created an interworking vruter on a Border device of the first DC, if the first vruter has created an interworking vruter on the Border device when interworking with a third vruter in a third DC, the SDN controller may use the established interworking vruter and the VPN to which the interworking vruter belongs, thereby avoiding the SDN controller additionally configuring new interworking vrouters and VPNs for the interworking services of the first and second vrouters, so when a first vRouter within the local DC interworks with multiple vrouters within other DCs, only one interworking vruterer needs to be created on the local Border device, only one VPN resource is occupied, and the first vRouter need only route one publication with the interworking vRouter, therefore, the method and the device can reduce VPN waste and route redundancy on the Border device.
As an embodiment, if the SDN controller determines that an interworking vruter has not been created in the Border device, a second configuration instruction may be issued to the Border device, where the second configuration instruction includes a VPN identifier configured for the interworking vruter, so that the Border device creates the interworking vruter and configures a VPN identifier to which the interworking vruter belongs; and issuing a third configuration instruction to the Border equipment, wherein the third configuration instruction comprises a network mapping instruction and a binding instruction, so that the Border equipment configures the mapping relation between the VLAN identifier and the VXLAN tunnel identifier on the interworking vRouter according to the network mapping instruction, and binds the VPN identifier to which the interworking vRouter belongs and the VXLAN tunnel identifier according to the binding instruction.
As an embodiment, before issuing the first configuration instruction or the third configuration instruction to the Border device, the SDN controller may first obtain an unoccupied target VLAN id from a local VLAN id pool, and obtain an unoccupied target VXLAN tunnel id from a local VXLAN tunnel id pool; then, establishing a mapping relationship between the target VLAN identifier and the target VXLAN tunnel identifier, and then the SDN controller issues a first configuration instruction or a third configuration instruction to the Border device, which specifically includes: and the SDN controller issues a first configuration instruction or a third configuration instruction to the Border device, wherein the first configuration instruction or the third configuration instruction comprises a network mapping instruction and a binding instruction, so that the Border device configures the mapping relation between the target VLAN identifier and the target VXLAN tunnel identifier on the interworking vRouter according to the network mapping instruction, and binds the VPN identifier to which the interworking vRouter belongs and the target VXLAN tunnel identifier according to the binding instruction.
Compared with the prior art, the method has the following advantages that:
1) the SDN controller can issue a configuration instruction to the Border device only when the interworking service is established for the first vRouter of the local tenant in the Border device for the first time, so as to establish the interworking vRouter, and can use the established interworking vRouter when other interworking services are established for the vRouter of the tenant in the Border device again subsequently, so that a new interworking vRouter does not need to be established, and the establishment process of the interworking vRouter can be reduced.
2) In the prior art, when interworking services are respectively established between a first vruter of a local tenant and a vruter across a DC, a plurality of interworking vruters are respectively established, and each different interworking vruter corresponds to a different VPN, so that VPN resources in Border equipment are greatly occupied.
3) In the prior art, when the interworking service is established between the first vruter of the local tenant and the vruter across the DC, a plurality of interworking vruters are respectively established, and in the process of route interaction between each interworking vruter and the first vruter of the tenant, the first vruter of the tenant needs to respectively issue route information of itself to each vruter once, so that the same route information sent by a plurality of first vruters is recorded in the Border device, thereby causing redundancy of the route information.
As an embodiment, after the interworking between the first vruter and the second vruter is established, the SDN controller may further store a corresponding relationship between the first vruter, the second vruter, and the VLAN identifier, so that when the SDN controller receives a message sent by the first vruter and the second vruter subsequently, the SDN controller matches a corresponding flow control policy through the VLAN identifier carried in the message, so as to perform flow control on the traffic between the first vruter and the second vruter, for example, perform control such as flow statistics or flow rate limitation.
To make the objects, technical solutions and advantages of the present application more clear, please refer to fig. 3 for further detailed description of the solution of the present application.
Please refer to fig. 3, which is a schematic diagram of another EVPN networking in an exemplary embodiment of the present application, in which a local DC in the networking includes a Switch1, a Border1 device, and a Border2 device, where the Switch1, the Border1, and the Border2 are gateway devices in distributed EVPN.
When the vruter 10 of the local tenant in the shanghai DC is to establish the interworking service with other DCs, for example, a process of establishing interworking between the vruter 1 of the tenant in the tianjin DC and the vruter 10 of the local tenant in the shanghai is taken as an example to be described in detail.
Firstly, after an interworking instruction for service interworking between the vruter 10 configured in the shanghai DC and the vruter 1 in the tianjin DC is manually issued in the SDN controller of the shanghai DC, the SDN controller may configure a designated Border device for the interworking service according to the interworking instruction. In this embodiment, since the shanghai DC includes the Border1 and the Border2, the SDN controller may select one Border from the two Border devices as a designated Border device for the interworking service.
Then, the SDN controller may check a configuration instruction recorded by the SDN controller and issued to a designated Border device, and determine whether a configuration instruction including a VPN identifier configured for an interworking vruter exists in the configuration instruction; if yes, determining that intercommunication vRouter is established in the Border equipment; if not, determining that the interworking vRouter is not established in the Border device.
If the designated Border device selected by the SDN controller is Border1, assuming that a configuration instruction containing a VPN identifier configured for an interworking vruter, which is received by vruter 10 when performing service interworking with a vruter of another DC, is recorded in Border1, it indicates that an interworking vruter is created in Border1, and the SDN controller does not need to create an interworking vruter again, and may issue a first configuration instruction to the Border device based on the VPN1 to which the created interworking vruter 1 belongs, where the first configuration instruction includes a network mapping indication and a binding indication, so that Border1 configures a mapping relationship between a VLAN identifier and a VXLAN tunnel identifier on the interworking vruter 1 according to the network mapping indication, and binds the VPN1 to which the vnuter 1 belongs to the VXLAN tunnel identifier according to the binding indication.
If the SDN controller selects Border2 as a designated Border device, assuming that a configuration instruction containing a VPN identifier configured for an interworking vruter is not received in Border2, it indicates that the interworking vruter is not created in Border2, and then the SDN controller may issue a second configuration instruction to Border2, where the second configuration instruction includes a VPN2 configured for the interworking vruter, so that Border2 creates interworking vruter 2, and configures the VPN identifier to which the interworking vruter 2 belongs; and issuing a third configuration instruction to the Border2, where the third configuration instruction includes a network mapping indication and a binding indication, so that the Border device configures, according to the network mapping indication, a mapping relationship between a VLAN identifier and a VXLAN tunnel identifier on the interworking vrrouter 2, and binds, according to the binding indication, the VPN2 to which the interworking vrrouter 2 belongs and the VXLAN tunnel identifier.
The EVPN can realize VTEP automatic discovery, VXLAN tunnel automatic establishment and VXLAN tunnel and VLAN automatic association through MP-BGP; and the control plane and the data plane can be separated, the control plane is responsible for issuing routing information, and the data plane is responsible for forwarding messages, so that after the SDN controller issues the mapping relation between the VLAN identifier and the VXLAN tunnel identifier to an interface of the Border device, the corresponding configuration can be automatically completed by utilizing the network characteristics of the EVPN.
After the service interworking between vruter 10 in shanghai DC and vruter 1 in tianjin DC is established, the establishment process of the service interworking between vruter 10 in shanghai DC and vruter 2 in tianjin DC, vruter 3 in guangzhou DC, and vruter 4 in beijing DC is similar to the above process, and is not described herein again.
After service interworking is established between vruter 10 in shanghai DC and vruter 1 in tianjin DC, vruter 2 in tianjin DC, vruter 3 in guangzhou DC and vruter 4 in beijing DC, since routing information of vruter 1 in tianjin DC, vruter 2 in tianjin DC, vruter 3 in guangzhou DC and vruter 4 in beijing DC can be learned by AR in shanghai DC and published to Border1 through eBGP, the route learned from AR is published to Switch1 through EVPN by Border 1. Since only one interworking vruter 1 on Border1 interacts with the routing information of vruter 10 in Switch1, vruter 10 only needs to issue routing information once, whereas in the prior art, vruter 10 needs to set different interworking vruters and VPNs for each interworking service, and vruter 10 interacts with the interworking vruter at least four times.
Therefore, the SDN controller can reduce the quantity of route redundancy and route learning on the border gateway device when the tenant vRouter has multiple data center-crossing intercommunication services by creating the shared intercommunication vRouter and the VPN, and can reduce the waste of VPN resources on the border gateway device by the shared intercommunication vRouter.
Corresponding to the foregoing embodiments of the network device configuration method in multiple DCs, the present application also provides embodiments of a network device configuration apparatus in multiple DCs.
The application also provides a network device configuration device in multiple DCs, which can be implemented by software, or by hardware, or by a combination of hardware and software. Taking software implementation as an example, the network device configuration apparatus in multiple DCs of the present application is a logical apparatus, and is implemented by a CPU of the apparatus reading and running a corresponding computer program instruction in a memory.
Referring to fig. 4, a network device configuration apparatus 400 in multiple DCs in an exemplary embodiment of the present application is applied to an SDN controller in a first DC, where the first DC includes a first vruter and a Border device, and from a logical perspective, the apparatus 400 includes:
a receiving unit 401, configured to receive an interworking instruction, where the interworking instruction is used to instruct the first vRouter to perform service interworking with a second vRouter in a second DC;
a determining unit 402, configured to determine, according to the interworking instruction, whether an interworking vruter has been created in the Border device, where when the first vruter performs service interworking with a third vruter in a third DC in advance, the interworking vruter establishes VXLAN tunnel connection with a Switch in which the first vruter is located;
an issuing unit 403, configured to issue a first configuration instruction to the Border device if the interworking vruter is created, where the first configuration instruction includes a network mapping indication and a binding indication, so that the Border device configures, according to the network mapping indication, a mapping relationship between a VLAN identifier and a VXLAN tunnel identifier on the interworking vruter, and binds, according to the binding indication, a VPN identifier to which the interworking vruter belongs and the VXLAN tunnel identifier.
As an embodiment, the issuing unit 403 is further configured to issue a second configuration instruction to the Border device if the SDN controller has not created an interworking vruter in the Border device, where the second configuration instruction includes a VPN identifier configured for the interworking vruter, so that the Border device creates the interworking vruter and configures a VPN identifier to which the interworking vruter belongs; and issuing a third configuration instruction to the Border equipment, wherein the third configuration instruction comprises a network mapping instruction and a binding instruction, so that the Border equipment configures the mapping relation between the VLAN identifier and the VXLAN tunnel identifier on the interworking vRouter according to the network mapping instruction, and binds the VPN identifier to which the interworking vRouter belongs and the VXLAN tunnel identifier according to the binding instruction.
As an embodiment, the determining unit 402 is configured to check all configuration instructions that have been issued to the Border device, and determine whether a configuration instruction for configuring a VPN identifier for an interworking vrrouter exists in all the configuration instructions; if yes, determining that intercommunication vRouter is established in the Border equipment; if not, determining that the interworking vRouter is not created in the Border device.
As an embodiment, the apparatus further comprises:
a searching unit 404, configured to obtain an unoccupied target VLAN identifier from a local VLAN identifier pool and obtain an unoccupied target VXLAN tunnel identifier from a local VXLAN tunnel identifier pool before issuing the first configuration instruction or the third configuration instruction to the Border device; establishing a mapping relation between the target VLAN identification and the target VXLAN tunnel identification;
the issuing unit 403 is specifically configured to issue a first configuration instruction or a third configuration instruction to the Border device, where the first configuration instruction or the third configuration instruction includes a network mapping instruction and a binding instruction, so that the Border device configures, according to the network mapping instruction, a mapping relationship between the target VLAN identifier and the target VXLAN tunnel identifier on the interworking vruter, and binds, according to the binding instruction, a VPN identifier to which the interworking vruter belongs and the target VXLAN tunnel identifier.
The implementation process of the functions and actions of each unit in the above device is specifically described in the implementation process of the corresponding step in the above method, and is not described herein again.
For the device embodiments, since they substantially correspond to the method embodiments, reference may be made to the partial description of the method embodiments for relevant points. The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of the application. One of ordinary skill in the art can understand and implement it without inventive effort.
Corresponding to the foregoing embodiments of the network device configuration method in multiple DCs, the present application also provides embodiments of a network device for performing the network device configuration method in multiple DCs described above.
As shown in fig. 5, the network device includes a memory 51, a processor 52, a communication interface 53, and a communication bus 54; wherein, the memory 51, the processor 52 and the communication interface 53 communicate with each other through the communication bus 54;
the memory 51 is used for storing computer programs;
the processor 52 is configured to execute the computer program stored in the memory 51, and when the processor 52 executes the computer program, any step of the network device configuration method in multiple DCs provided in the embodiments of the present application is implemented.
In correspondence with the foregoing embodiments of the network device configuration method in multiple DCs, the present application also provides embodiments of a computer-readable storage medium for performing the network device configuration method in multiple DCs described above.
A computer readable storage medium having stored therein a computer program which, when executed by a processor, implements any of the steps of the network device configuration method in multiple DCs provided by embodiments of the present application.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for embodiments of the network device and the computer-readable storage medium, since they are substantially similar to the method embodiments, the description is relatively simple, and in relation to the description, reference may be made to some portions of the description of the method embodiments.
In summary, according to the present application, when receiving an interworking instruction for instructing service interworking between a first vruter at a first DC and a second vruter at a second DC, an SDN controller may determine, according to the interworking instruction, whether an interworking vruter has been created in a Border device at the first DC, and when the first vruter performs service interworking with a third vruter at a third DC in advance, the interworking vruter establishes VXLAN tunnel connection with a Switch where the first vruter is located; and if the interworking vRouter is created, issuing a first configuration instruction to the Border device, wherein the first configuration instruction comprises a network mapping instruction and a binding instruction, so that the Border device configures the mapping relation between the VLAN identifier and the VXLAN tunnel identifier on the interworking vRouter according to the network mapping instruction, and binds the VPN identifier to which the interworking vRouter belongs and the VXLAN tunnel identifier according to the binding instruction.
Compared with the prior art, the interworking vRouter is established for each interworking service of the first vRouter of the local tenant, the interworking vRouter can be aggregated into one interworking vRouter, mapping relations between different VLAN identifiers and VXLAN tunnel identifiers are configured for different interworking services, and different VXLAN tunnel identifiers are bound to the same VPN, so that occupation of VPN resources corresponding to the interworking vRouter in Border equipment is reduced, and only one interworking vRouter in the Border equipment is connected with the first vRouter of the tenant, so that the first vRouter only needs to issue routing information to the interworking vRouter once, and further redundancy of the routing information can be reduced.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.

Claims (8)

1. A method for configuring network devices in a multi-data center DC, the method being applied to a software defined network, SDN, controller in a first DC, the first DC comprising a first virtual router, vruter, and a Border device, the method comprising:
receiving an intercommunication instruction, wherein the intercommunication instruction is used for indicating the first vRouter to carry out service intercommunication with a second vRouter in a second DC;
determining whether an interworking vRouter is established in the Border device according to the interworking instruction, wherein when the first vRouter performs service interworking with a third vRouter at a third DC in advance, the interworking vRouter establishes a virtual extensible local area network (VXLAN) tunnel connection with a Switch where the first vRouter is located;
if the interworking vRouter is created, a first configuration instruction is issued to the Border device, wherein the first configuration instruction comprises a network mapping instruction and a binding instruction, so that the Border device configures a mapping relation between a Virtual Local Area Network (VLAN) identifier and a VXLAN tunnel identifier on the interworking vRouter according to the network mapping instruction, and binds a Virtual Private Network (VPN) identifier to which the interworking vRouter belongs and the VXLAN tunnel identifier according to the binding instruction.
2. The method of claim 1, wherein if an SDN controller has not created an interworking vRouter in the Border device, the method further comprises:
issuing a second configuration instruction to the Border device, where the second configuration instruction includes a VPN identifier configured for the interworking vRouter, so that the Border device creates the interworking vRouter and configures the VPN identifier to which the interworking vRouter belongs;
and issuing a third configuration instruction to the Border equipment, wherein the third configuration instruction comprises a network mapping instruction and a binding instruction, so that the Border equipment configures the mapping relation between the VLAN identifier and the VXLAN tunnel identifier on the interworking vRouter according to the network mapping instruction, and binds the VPN identifier to which the interworking vRouter belongs and the VXLAN tunnel identifier according to the binding instruction.
3. The method according to claim 1 or 2, wherein said determining whether an interworking vruterer has been created in the Border device comprises:
checking all configuration instructions issued to the Border equipment, and judging whether a configuration instruction for configuring VPN identification for interworking vRouter exists in all the configuration instructions;
if yes, determining that intercommunication vRouter is established in the Border equipment;
if not, determining that the interworking vRouter is not created in the Border device.
4. The method according to claim 2, wherein before issuing the first or third configuration instruction to the Border device, the method further comprises:
acquiring unoccupied target VLAN identifications from a local VLAN identification pool, and acquiring unoccupied target VXLAN tunnel identifications from a local VXLAN tunnel identification pool; establishing a mapping relation between the target VLAN identification and the target VXLAN tunnel identification;
the issuing of the first configuration instruction or the third configuration instruction to the Border device includes:
and issuing a first configuration instruction or a third configuration instruction to the Border device, wherein the first configuration instruction or the third configuration instruction comprises a network mapping instruction and a binding instruction, so that the Border device configures the mapping relation between the target VLAN identifier and the target VXLAN tunnel identifier on the interworking vRouter according to the network mapping instruction, and binds the VPN identifier to which the interworking vRouter belongs and the target VXLAN tunnel identifier according to the binding instruction.
5. An apparatus for configuring network devices in a multi-Data Center (DC), the apparatus being applied to a Software Defined Network (SDN) controller in a first DC, the first DC comprising a first virtual router (vRouter) and a Border Border device, the apparatus comprising:
a receiving unit, configured to receive an interworking instruction, where the interworking instruction is used to instruct the first vRouter to perform service interworking with a second vRouter in a second DC;
a determining unit, configured to determine, according to the interworking instruction, whether interworking vruter has been created in the Border device, where when the first vruter performs service interworking with a third vruter in a third DC in advance, the interworking vruter establishes a virtual extensible local area network VXLAN tunnel connection with a Switch where the first vruter is located;
and the issuing unit is used for issuing a first configuration instruction to the Border device if the interworking vRouter is created, wherein the first configuration instruction comprises a network mapping instruction and a binding instruction, so that the Border device configures the mapping relation between the VLAN identifier and the VXLAN tunnel identifier on the interworking vRouter according to the network mapping instruction, and binds the VPN identifier to which the interworking vRouter belongs and the VXLAN tunnel identifier according to the binding instruction.
6. The apparatus of claim 5,
the issuing unit is further configured to issue a second configuration instruction to the Border device if the SDN controller has not created an interworking vruter in the Border device, where the second configuration instruction includes a VPN identifier configured for the interworking vruter, so that the Border device creates the interworking vruter, and configures a VPN identifier to which the interworking vruter belongs; and issuing a third configuration instruction to the Border equipment, wherein the third configuration instruction comprises a network mapping instruction and a binding instruction, so that the Border equipment configures the mapping relation between the VLAN identifier and the VXLAN tunnel identifier on the interworking vRouter according to the network mapping instruction, and binds the VPN identifier to which the interworking vRouter belongs and the VXLAN tunnel identifier according to the binding instruction.
7. The apparatus of claim 5 or 6,
the determining unit is configured to check all configuration instructions issued to the Border device, and determine whether a configuration instruction for configuring a VPN identifier for an interworking vrrouter exists in all the configuration instructions; if yes, determining that intercommunication vRouter is established in the Border equipment; if not, determining that the interworking vRouter is not created in the Border device.
8. The apparatus of claim 6, further comprising:
the searching unit is used for acquiring unoccupied target VLAN identifications from a local VLAN identification pool and acquiring unoccupied target VXLAN tunnel identifications from a local VXLAN tunnel identification pool before issuing the first configuration instruction or the third configuration instruction to the Border device; establishing a mapping relation between the target VLAN identification and the target VXLAN tunnel identification;
the issuing unit is specifically configured to issue a first configuration instruction or a third configuration instruction to the Border device, where the first configuration instruction or the third configuration instruction includes a network mapping instruction and a binding instruction, so that the Border device configures, according to the network mapping instruction, a mapping relationship between the target VLAN identifier and the target VXLAN tunnel identifier on the interworking vruter, and binds, according to the binding instruction, a VPN identifier to which the interworking vruter belongs and the target VXLAN tunnel identifier.
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