CN109617817B

CN109617817B - Method and device for generating forwarding table entry of MLAG networking

Info

Publication number: CN109617817B
Application number: CN201910058213.2A
Authority: CN
Inventors: 黄李伟; 王伟
Original assignee: Hangzhou H3C Technologies Co Ltd
Current assignee: Hangzhou H3C Technologies Co Ltd
Priority date: 2019-01-22
Filing date: 2019-01-22
Publication date: 2021-06-04
Anticipated expiration: 2039-01-22
Also published as: CN109617817A

Abstract

The embodiment of the application provides a method and a device for generating a forwarding table entry of an MLAG networking, and relates to the technical field of communication. The method comprises the following steps: when a first message with a destination address of the first virtual machine VM is received, whether a forwarding table entry of the first VM exists locally is inquired. And if the forwarding table entry of the first VM does not exist locally, requesting the second VTEP to synchronize the forwarding information of the first VM so that the second VTEP sends a first synchronization message carrying the forwarding information of the first VM to the first VTEP. And receiving a first synchronization message sent by the second VTEP, and then generating a forwarding table entry of the first VM according to the first synchronization message. By the aid of the forwarding table entry forwarding method and device, the information quantity of the forwarding table entries stored in the distributed aggregation system can be increased.

Description

Method and device for generating forwarding table entry of MLAG networking

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for generating a forwarding table entry of an MLAG networking.

Background

In order to improve the reliability of VXLAN (Virtual Extensible Local Area Network), a concept of distributed aggregation is proposed, in which a plurality of VTEPs (VXLAN Tunnel End points) are aggregated into one device. Taking the networking shown in fig. 1 as an example, based on an MLAG (Multi-Chassis Link Aggregation Group) technology, a distributed Aggregation system is constructed by a first VTEP and a second VTEP, the first VM (Virtual Machine) and the second VM access the distributed Aggregation system through a switch, and a third VTEP is connected to the distributed Aggregation system and a third VM respectively.

When the first VTEP receives an ARP (Address Resolution Protocol) message sent by the first VM, the first VTEP may learn a forwarding entry of the first VM, and then synchronize the forwarding entry of the first VM to the second VTEP device. Subsequently, when the third VM needs to send a message to the first VM, the message may reach the distributed aggregation system via the third VTEP. The distributed aggregation system randomly selects one VTEP to forward the message. For example, the second VTEP can be selected, and the second VTEP forwards the packet to the first VM according to the forwarding table entry of the first VM, thereby improving reliability of the VXLAN.

The first VTEP can synchronize to the second VTEP every time the forwarding table entry of one VM is learned by the first VTEP, so that the first VTEP and the second VTEP have the same forwarding table entry, the information amount of the forwarding table entries of the two VTEPs in the distributed aggregation system is equivalent to that of the forwarding table entry of one VTEP, and the information amount of the forwarding table entries stored in the distributed aggregation system is less.

Disclosure of Invention

An object of the embodiments of the present application is to provide a method and an apparatus for generating a forwarding entry in an MLAG networking, which can improve the information amount of the forwarding entry stored in a distributed aggregation system. The specific technical scheme is as follows:

in a first aspect, a method for generating a forwarding table entry of an MLAG networking is provided, where the method is applied to a first extensible virtual local area network tunnel endpoint VTEP in a distributed aggregation system, where the distributed aggregation system further includes a second VTEP, and the method includes:

when a first message with a destination address being the address of a first virtual machine VM is received, whether a forwarding table item of the first VM exists locally is inquired;

if the forwarding table entry of the first VM does not exist locally, requesting the second VTEP to synchronize the forwarding information of the first VM so that the second VTEP sends a first synchronization message carrying the forwarding information of the first VM to the first VTEP;

receiving the first synchronization message sent by the second VTEP;

and generating a forwarding table entry of the first VM according to the first synchronization message.

Optionally, the forwarding information of the first VM includes an address of the first VM and interface information of a first outgoing interface corresponding to the first VM in the second VTEP, where the interface information includes an extensible virtual local area network VXLAN identifier, a private network identifier, and a distributed aggregation interface identifier, and the generating a forwarding table entry of the first VM according to the first synchronization message includes:

determining a second outgoing interface matched with the interface information in a local outgoing interface;

and generating a forwarding table entry of the first VM according to the address of the first VM and the second outgoing interface.

Optionally, the requesting, to the second VTEP, the forwarding information of the first VM to be synchronized so that the second VTEP sends, to the first VTEP, a first synchronization message carrying the forwarding information of the first VM, includes:

sending a first request message of the forwarding information of the first VM to the second VTEP, so that the second VTEP sends a first synchronization message carrying the forwarding information of the first VM to the first VTEP according to the first request message, where the first request message carries an address of the first VM and a VXLAN identifier in the first message.

and sending the first message to the second VTEP so that the second VTEP sends a first synchronization message carrying forwarding information of the first VM to the first VTEP according to the first message.

Optionally, the method further includes:

when an Address Resolution Protocol (ARP) message sent by a second VM is received, generating a forwarding table entry of the second VM according to the ARP message;

and when detecting that the second VTEP requests to synchronize the forwarding information of the second VM, sending a second synchronization message carrying the forwarding information of the second VM to the second VTEP, wherein the forwarding information of the second VM is obtained according to the forwarding table entry of the second VM.

Optionally, the forwarding information of the second VM includes an address of the second VM and interface information of a third egress interface corresponding to the second VM in the first VTEP, where the interface information includes a VXLAN identifier, a private network identifier, and a distributed aggregation interface identifier.

Optionally, when it is detected that the second VTEP requests to synchronize the forwarding information of the second VM, sending a second synchronization message carrying the forwarding information of the second VM to the second VTEP includes:

when a second request message of the forwarding information of the second VM sent by the second VTEP is received, sending a second synchronization message carrying the forwarding information of the second VM to the second VTEP according to the second request message, where the second request message carries an address of the second VM and a VXLAN identifier in a second message received by the second VTEP, and the second message is a message whose destination address is the address of the second VM.

Optionally, when it is detected that the second VTEP requests to synchronize the forwarding information of the second VM, the sending a second synchronization message of the forwarding information of the second VM to the second VTEP includes:

and when a second message which is sent by the second VTEP and has a destination address of a second VM is received, sending a second synchronous message carrying forwarding information of the second VM to the second VTEP according to the second message.

In a second aspect, an apparatus for generating a forwarding table entry of an MLAG networking is provided, where the apparatus is applied to a first extensible virtual local area network tunnel endpoint VTEP in a distributed aggregation system, where the distributed aggregation system further includes a second VTEP, and the apparatus includes:

the system comprises a query module, a forwarding module and a forwarding module, wherein the query module is used for querying whether a forwarding table entry of a first Virtual Machine (VM) exists locally or not when a first message with a destination address being the address of the first VM is received;

a request module, configured to request the second VTEP to synchronize forwarding information of the first VM if a forwarding table entry of the first VM does not exist locally, so that the second VTEP sends a first synchronization message carrying the forwarding information of the first VM to the first VTEP;

a receiving module, configured to receive the first synchronization message sent by the second VTEP;

and the first generating module is used for generating a forwarding table entry of the first VM according to the first synchronization message.

Optionally, the forwarding information of the first VM includes an address of the first VM and interface information of a first outgoing interface corresponding to the first VM in the second VTEP, where the interface information includes an extensible virtual local area network VXLAN identifier, a private network identifier, and a distributed aggregation interface identifier, and the first generating module is specifically configured to:

Optionally, the request module is specifically configured to:

Optionally, the apparatus further comprises:

the second generation module is used for generating a forwarding table entry of a second VM according to an Address Resolution Protocol (ARP) message when the ARP message sent by the second VM is received;

a sending module, configured to send, to the second VTEP, a second synchronization message carrying forwarding information of the second VM when it is detected that the second VTEP requests synchronization of the forwarding information of the second VM, where the forwarding information of the second VM is obtained according to a forwarding table entry of the second VM.

Optionally, the sending module is specifically configured to:

In a third aspect, there is provided an electronic device comprising a processor and a machine-readable storage medium storing machine-executable instructions executable by the processor, the processor being caused by the machine-executable instructions to: the method steps of the first aspect are implemented.

In a fourth aspect, a computer-readable storage medium is provided, having stored thereon a computer program which, when being executed by a processor, carries out the method steps of the first aspect.

The method and the device for generating the forwarding table entry of the MLAG networking are applied to a first VTEP in a distributed aggregation system, and the distributed aggregation system further comprises a second VTEP. When a first message with a destination address of the first virtual machine VM is received, whether a forwarding table entry of the first VM exists locally is inquired. And if the forwarding table entry of the first VM does not exist locally, requesting the second VTEP to synchronize the forwarding information of the first VM so that the second VTEP sends a first synchronization message carrying the forwarding information of the first VM to the first VTEP. And receiving a first synchronization message sent by the second VTEP, and then generating a forwarding table entry of the first VM according to the first synchronization message. Compared with the prior art that the first VTEP and the second VTEP in the distributed aggregation system have the same forwarding table entry, that is, the information amount of the forwarding table entries of the two VTEPs in the distributed aggregation system is equivalent to the information amount of the forwarding table entry of one VTEP, in the present application, only when the first VTEP requests the second VTEP to synchronize the forwarding information of a certain VM, the second VTEP synchronizes the forwarding information of the VM to the first VTEP, so that the first VTEP generates the forwarding table entry of the VM according to the forwarding information of the VM. Therefore, two VTEPs in the distributed aggregation system can respectively store the forwarding table entries which are not identical, that is, the information amount of the forwarding table entries in the two VTEPs in the distributed aggregation system is larger than that of the forwarding table entries in one VTEP, and the information amount of the forwarding table entries stored in the distributed aggregation system can be increased.

Of course, not all advantages described above need to be achieved at the same time in the practice of any one product or method of the present application.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is an MLAG networking provided in an embodiment of the present application;

fig. 2 is a flowchart of a method for generating a forwarding entry of an MLAG networking according to an embodiment of the present application;

fig. 3 is a flowchart of a method for generating a forwarding entry of an MLAG networking according to an embodiment of the present application;

fig. 4 is a flowchart of a method for generating a forwarding entry of an MLAG networking according to an embodiment of the present application;

fig. 5 is a flowchart of a method for generating a forwarding entry of an MLAG networking according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a device for generating a forwarding table entry of an MLAG networking according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application provides a method for generating a forwarding table entry of an MLAG networking, which is applied to a first VTEP in a distributed aggregation system, wherein the distributed aggregation system further comprises a second VTEP. Referring to fig. 1, a schematic diagram of MLAG networking is shown. The first VTEP and the second VTEP form a distributed aggregation system based on MLAG technology, the first VTEP and the second VTEP are virtualized into one device, cross-device link aggregation is achieved, the first VM and the second VM are accessed into the distributed aggregation system formed by the first VTEP and the second VTEP through a switch, the third VTEP is connected with the first VTEP and the second VTEP respectively, and the third VM is connected with the third VTEP. The number of VMs connected to the distributed aggregation system through the switch may be multiple, and the number of VMs connected to the third VTEP may be multiple. The first VTEP and the second VTEP may be configured with the same AC (access Circuit) interface. For example, the first VTEP is configured with AC 1, the second VTEP is configured with AC 2, the VXLAN identifier, the private network identifier, and the distributed aggregation interface identifier corresponding to AC 1 are 100, 10, and 1, respectively, and the VXLAN identifier, the private network identifier, and the distributed aggregation interface identifier corresponding to AC 2 are 100, 10, and 1, respectively.

A detailed description will be given below, with reference to a specific embodiment, of a method for generating a forwarding entry of an MLAG networking provided in an embodiment of the present application, as shown in fig. 2, the specific steps are as follows:

step 201, when receiving a first message whose destination address is an address of a first VM, querying whether a forwarding table entry of the first VM exists locally.

In this embodiment of the application, referring to fig. 1, the third VM may send a first packet to the third VTEP, where a destination address of the first packet is an address of the first VM. The third VTEP may randomly send the first packet to the first VTEP, or may randomly send the first packet to the second VTEP. When the third VTEP randomly sends the first message to the first VTEP, after receiving the first message, the first VTEP may parse the first message to obtain an address and a VXLAN identifier of the first VM, where the address of the first VM may include an IP (Internet Protocol) address and an MAC (Media Access Control) address of the first VM.

Step 202, if the forwarding table entry of the first VM does not exist locally, requesting the second VTEP to synchronize the forwarding information of the first VM.

The forwarding information of the first VM includes an address of the first VM and interface information of a first outgoing interface corresponding to the first VM in the second VTEP, the outgoing interface is an AC interface of the VM accessing the VTEP, the interface information includes a VXLAN identifier, a private network identifier and a distributed aggregation interface identifier, and the private network identifier is an identifier of a VLAN (Virtual local area network) accessed by the VM.

In this embodiment of the application, if there is no forwarding entry of the first VM locally, the first VTEP may request the second VTEP to synchronize the forwarding information of the first VM, so that the second VTEP sends the first synchronization message carrying the forwarding information of the first VM to the first VTEP. The way that the first VTEP requests the second VTEP to synchronize the forwarding information of the first VM is various, and the embodiment of the present application provides the following two request synchronization ways.

The first method is as follows: a first request message for forwarding information for the first VM is sent to the second VTEP.

The first request message carries an address of the first VM and a VXLAN identifier in the first message, and the address of the first VM may include an IP address and a MAC address of the first VM.

In an embodiment of the application, a first VTEP may send a first request message for forwarding information of a first VM to a second VTEP. Correspondingly, after the second VTEP receives the first request message sent by the first VTEP, the second VTEP may query the forwarding table entry of the first VM in the local forwarding table entry according to the address of the first VM and the VXLAN identifier carried in the first request message. And then, the second VTEP obtains the forwarding information of the first VM according to the forwarding table entry of the first VM, and sends a synchronization message carrying the forwarding information of the first VM to the first VTEP.

The embodiment of the present application further provides an example of information carried in the first request message, as shown in table 1, a VXLAN identifier carried in the first request message is 100, an IP address carried in the first request message is 10.1.1.2, and a MAC address carried in the first request message is 1-1-1.

TABLE 1

VXLAN identification	100
		IP address	10.1.1.2
MAC address	1-1-1

The second method comprises the following steps: and sending the first message to a second VTEP.

In this embodiment, the first VTEP may send the first packet to the second VTEP. Correspondingly, after the second VTEP receives the first message, the second VTEP may analyze the first message to obtain the address and the VXLAN identifier of the first VM carried in the first message, and then the second VTEP may query the forwarding table entry of the first VM in the local forwarding table entry according to the address and the VXLAN identifier of the first VM. And then, the second VTEP obtains the forwarding information of the first VM according to the forwarding table entry of the first VM, and sends a synchronization message carrying the forwarding information of the first VM to the first VTEP.

The embodiment of the present application further provides an example of a forwarding entry of the first VM in the second VTEP, as shown in table 2, the forwarding entry includes an IP address 10.1.1.2 of the first VM, a MAC address 1-1-1 of the first VM, and a first outgoing interface AC 21 corresponding to the first VM in the second VTEP.

TABLE 2

IP address	MAC address	Outlet interface
			10.1.1.2	1-1-1	AC21

Step 203, receiving a first synchronization message sent by the second VTEP.

In an embodiment of the application, the second VTEP may send a plurality of synchronization messages to the first VTEP, and the first VTEP may receive the synchronization messages sent by the second VTEP. Then, the first VTEP may determine, from the received synchronization message, a first synchronization message including an address of the first VM according to the address of the VM carried in the synchronization message.

As shown in table 3, the embodiment of the present application further provides an example of a first synchronization message, where the first synchronization message includes an IP address 10.1.1.2 of the first VM, a MAC address 0001-. The sequence number indicates the number of the first synchronization message, and the dynamic 1 indicates that the first synchronization message is the first synchronization message sent by the first VTEP only when the second VTEP requests to synchronously forward information.

TABLE 3

IP address	10.1.1.2
		MAC address	0001-0001-0001
VXLAN identification	100
		Private network identification	10
Distributed aggregation interface identification	1
		Sequence numbering	0
Dynamic state	1

Step 204, generating a forwarding table entry of the first VM according to the first synchronization message.

In this embodiment of the application, the first VTEP may generate a forwarding entry of the first VM according to the first synchronization message. The specific generation mode may be: and determining a second outgoing interface matched with the interface information in the local outgoing interfaces, and generating a forwarding table entry of the first VM according to the address of the first VM and the second outgoing interface. The first VTEP may determine, in the local outgoing interface, a second outgoing interface that matches the VXLAN identifier, the private network identifier, and the distributed aggregation interface identifier of the first outgoing interface according to the VXLAN identifier, the private network identifier, and the distributed aggregation interface identifier of the first outgoing interface carried by the first synchronization message. For example, assume that the first outgoing interface is AC 21, the local outgoing interface of the first VTEP has AC 11, AC 12, and AC 13, the VXLAN identifier, the private network identifier, and the distributed aggregation interface identifier of AC 21 are 100, 10, and 1, respectively, the VXLAN identifier, the private network identifier, and the distributed aggregation interface identifier of AC 11 are 100, 10, and 1, the VXLAN identifier, the private network identifier, and the distributed aggregation interface identifier of AC 12 are 101, 11, and 1, respectively, and the VXLAN identifier, the private network identifier, and the distributed aggregation interface identifier of AC 13 are 100, 12, and 1, respectively. Wherein, the VXLAN identifier, the private network identifier, and the distributed aggregation interface identifier of the AC 11 are the same as the VXLAN identifier, the private network identifier, and the distributed aggregation interface identifier of the AC 21, and the first VTEP takes the AC 11 as the second outgoing interface. The first VTEP may generate a forwarding table entry of the first VM according to the address of the first VM and the second outgoing interface. In this way, when the first VTEP receives the packet whose destination address is the address of the first VM again, the first VTEP may forward the packet to the first VM according to the forwarding table entry of the first VM.

Optionally, when no message is sent to the first VM through the forwarding table entry of the first VM in the first VTEP within the preset duration, the first VTEP may delete the forwarding table entry of the first VM in the first VTEP.

Compared with the prior art that the first VTEP and the second VTEP in the distributed aggregation system have the same forwarding table, that is, the information amount of the forwarding table of the two VTEPs in the distributed aggregation system is equivalent to the information amount of the forwarding table of one VTEP, in the present application, only when the first VTEP requests the second VTEP to synchronize the forwarding information of one VM, the second VTEP synchronizes the forwarding information of the VM to the first VTEP, so that the first VTEP generates the forwarding table of the VM according to the forwarding information of the VM, in this way, the two VTEPs in the distributed aggregation system can respectively store the incompletely same forwarding table, that is, the information amount of the forwarding table in the two VTEPs in the distributed aggregation system is greater than the information amount of the forwarding table in one VTEP, and the information amount of the forwarding table stored in the distributed aggregation system can be increased.

The method steps shown in fig. 2 above describe the process of the first VTEP requesting the second VTEP to synchronously forward information. Optionally, the first VTEP may also synchronize forwarding information to the second VTEP, as shown in fig. 3, the method for generating a forwarding table entry of an MLAG networking further includes the following steps:

step 301, when receiving the ARP packet sent by the second VM, generating a forwarding table entry of the second VM according to the ARP packet.

The forwarding table entry of the second VM includes an address of the second VM and an output interface corresponding to the second VM in the first VTEP.

In this embodiment of the application, the second VM may send an ARP packet to the first VTEP, and after receiving the ARP packet, the first VTEP may learn a forwarding entry of the second VM.

Step 302, when detecting that the second VTEP requests to synchronize the forwarding information of the second VM, sending a second synchronization message carrying the forwarding information of the second VM to the second VTEP.

The forwarding information of the second VM includes an address of the second VM and interface information of a third egress interface corresponding to the second VM in the first VTEP, where the interface information includes a VXLAN identifier, a private network identifier, and a distributed aggregation interface identifier.

In this embodiment of the application, when the first VTEP detects that the second VTEP requests to synchronize forwarding information of the second VM, the first VTEP may determine the forwarding information of the second VM according to a forwarding entry of the second VM, and then the first VTEP may send a second synchronization message carrying the forwarding information of the second VM to the second VTEP, so that the second VTEP generates the forwarding entry of the second VM according to the second synchronization message. When it is detected that the second VTEP requests to synchronize forwarding information of the second VM, the manner of sending the second synchronization message to the second VTEP is various.

The first method is as follows: and when a second request message of the forwarding information of the second VM sent by the second VTEP is received, sending a second synchronization message carrying the forwarding information of the second VM to the second VTEP according to the second request message.

The second request message carries the address of the second VM, the VXLAN identifier in the second message is received by the second VTEP, and the second message is a message with the destination address of the second VM.

In this embodiment of the application, when the first VTEP receives the second request message sent by the second VTEP, the first VTEP may query the forwarding table entry of the second VM in the local forwarding table entry according to the address of the second VM and the VXLAN identifier carried in the second request message, the first VTEP may determine the forwarding information of the second VM according to the forwarding table entry of the second VM, and then the first VTEP may send the second synchronization message carrying the forwarding information of the second VM to the second VTEP.

The second method comprises the following steps: and when a second message which is sent by the second VTEP and has the destination address of the second VM is received, sending a second synchronous message carrying the forwarding information of the second VM to the second VTEP according to the second message.

In this embodiment of the application, after receiving a second packet, which is sent by a second VTEP and whose destination address is an address of a second VM, the first VTEP may analyze the second packet, and obtain a VXLAN identifier carried in the second packet and an address of the second VM, and then, according to the VXLAN identifier and the address of the second VM, the first VTEP may query a forwarding entry of the second VM in a local forwarding entry, and according to the forwarding entry of the second VM, the first VTEP may determine forwarding information of the second VM, and then, the first VTEP may send a second synchronization message carrying forwarding information of the second VM to the second VTEP.

Referring to fig. 4, an example of a method for generating a forwarding table entry of an MLAG networking is further provided in the embodiments of the present application, where the method is implemented by a first VTEP and a second VTEP in a distributed aggregation system, and the method includes the following steps:

step 401, when the first VTEP receives the ARP packet sent by the second VM, the first VTEP generates a forwarding table entry of the second VM according to the ARP packet.

The processing procedure of step 401 may refer to the related description of step 301, and is not described herein again.

Step 402, when the second VTEP receives the message whose destination address is the address of the second VM, the second VTEP queries whether a forwarding table entry of the second VM exists locally.

The processing procedure of step 402 may refer to the related description of step 201, and is not described herein again.

In step 403, if the second VTEP does not have a forwarding table entry of the second VM locally, the second VTEP sends a request message of forwarding information of the second VM to the first VTEP.

The processing procedure of step 403 may refer to the related description of step 202, which is not described herein again.

And step 404, when the first VTEP receives the request message of the forwarding information of the second VM sent by the second VTEP, sending a synchronization message to the second VTEP.

The processing procedure of step 404 may refer to the related description of step 302, which is not described herein again.

In step 405, the second VTEP determines, in the local outgoing interface, a fourth outgoing interface matching the interface information carried in the synchronization message.

The processing procedure of step 405 may refer to the related description of step 204, and is not described herein again.

Step 406, generating a forwarding table entry of the second VM according to the address of the second VM and the fourth outgoing interface.

The processing procedure of step 406 may refer to the related description of step 204, and is not described herein again.

Referring to fig. 5, an example of a method for generating a forwarding table entry of an MLAG networking is further provided in the embodiments of the present application, where the method is implemented by a first VTEP and a second VTEP in a distributed aggregation system, and the method includes the following steps:

step 501, when the first VTEP receives the ARP packet sent by the second VM, the first VTEP generates a forwarding table entry of the second VM according to the ARP packet.

The processing procedure of step 501 may refer to the related description of step 301, and is not described herein again.

Step 502, when the second VTEP receives the message whose destination address is the address of the second VM, the second VTEP queries whether a forwarding table entry of the second VM exists locally.

The processing procedure of step 502 may refer to the related description of step 201, and is not described herein again.

Step 503, if the second VTEP does not have the forwarding table entry of the second VM locally, the second VTEP sends the message whose destination address is the address of the second VM to the first VTEP.

The processing procedure of step 503 may refer to the related description of step 202, and is not described herein again.

Step 504, when the first VTEP receives the message sent by the second VTEP and having the destination address of the second VM, the first VTEP sends a synchronization message to the second VTEP.

The processing procedure of step 504 may refer to the related description of step 302, and is not described herein again.

And step 505, the second VTEP determines a fourth outgoing interface matched with the interface information carried by the synchronization message in the local outgoing interfaces.

The processing procedure of step 505 may refer to the related description of step 204, and is not described herein again.

Step 506, a forwarding table entry of the second VM is generated according to the address of the second VM and the fourth outgoing interface.

The processing procedure of step 506 may refer to the related description of step 204, and is not described herein again.

Based on the same technical concept, as shown in fig. 6, an embodiment of the present application further provides a device for synchronizing forwarding table entries of an MLAG networking, where the device is applied to a first extensible virtual local area network tunnel endpoint VTEP in a distributed aggregation system, where the distributed aggregation system further includes a second VTEP, and the device includes:

the query module 601 is configured to query whether a forwarding table entry of a first Virtual Machine (VM) exists locally when a first message with a destination address of the first VM is received;

a requesting module 602, configured to request the second VTEP to synchronize forwarding information of the first VM if a forwarding table entry of the first VM does not exist locally, so that the second VTEP sends a first synchronization message carrying the forwarding information of the first VM to the first VTEP;

a receiving module 603, configured to receive the first synchronization message sent by the second VTEP;

a first generating module 604, configured to generate a forwarding table entry of the first VM according to the first synchronization message.

Optionally, the forwarding information of the first VM includes an address of the first VM and interface information of a first outgoing interface corresponding to the first VM in the second VTEP, where the interface information includes an extensible virtual local area network VXLAN identifier, a private network identifier, and a distributed aggregation interface identifier, and the first generating module 604 is specifically configured to:

Optionally, the request module 602 is specifically configured to:

Optionally, the apparatus further comprises:

Optionally, the sending module is specifically configured to:

The embodiment of the present application further provides an electronic device, as shown in fig. 7, which includes a processor 701, a communication interface 702, a memory 703 and a communication bus 704, where the processor 701, the communication interface 702, and the memory 703 complete mutual communication through the communication bus 704,

a memory 703 for storing a computer program;

the processor 701 is configured to implement the following steps when executing the program stored in the memory 703:

receiving the first synchronization message sent by the second VTEP;

Optionally, the method further includes:

The communication bus mentioned in the electronic device may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus.

The communication interface is used for communication between the electronic equipment and other equipment.

The Memory may include a Random Access Memory (RAM) or a Non-Volatile Memory (NVM), such as at least one disk Memory. Optionally, the memory may also be at least one memory device located remotely from the processor.

The Processor may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but also Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components.

In another embodiment provided by the present application, a computer-readable storage medium is further provided, where a computer program is stored in the computer-readable storage medium, and when executed by a processor, the computer program implements the steps of the method for generating a forwarding table entry of any MLAG networking.

In another embodiment provided by the present application, there is further provided a computer program product containing instructions, which when run on a computer, causes the computer to perform the steps of the method for generating a forwarding entry of any MLAG networking in the foregoing embodiments.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

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, as for the apparatus embodiment, since it is substantially similar to the method embodiment, the description is relatively simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The above description is only for the preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application are included in the protection scope of the present application.

Claims

1. A method for generating a forwarding table entry of an MLAG networking is applied to a first extensible virtual local area network tunnel endpoint (VTEP) in a distributed aggregation system, wherein the distributed aggregation system further comprises a second VTEP, and the forwarding table entry stored in the first VTEP is different from the forwarding table entry stored in the second VTEP, and the method comprises the following steps:

receiving the first synchronization message sent by the second VTEP;

2. The method according to claim 1, wherein the forwarding information of the first VM includes an address of the first VM, and interface information of a first outgoing interface corresponding to the first VM in the second VTEP, where the interface information includes an extensible virtual local area network VXLAN identifier, a private network identifier, and a distributed aggregation interface identifier, and the generating the forwarding table entry of the first VM according to the first synchronization message includes:

3. The method of claim 1, wherein the requesting the second VTEP to synchronize forwarding information of the first VM such that the second VTEP sends a first synchronization message to the first VTEP that carries the forwarding information of the first VM comprises:

4. The method of claim 1, wherein the requesting the second VTEP to synchronize forwarding information of the first VM such that the second VTEP sends a first synchronization message to the first VTEP that carries the forwarding information of the first VM comprises:

5. The method of claim 1, further comprising:

6. The method of claim 5, wherein the forwarding information of the second VM comprises an address of the second VM and interface information of a third outbound interface corresponding to the second VM in the first VTEP, and wherein the interface information comprises a VXLAN identifier, a private network identifier, and a distributed aggregation interface identifier.

7. The method according to claim 5, wherein the sending a second synchronization message carrying forwarding information of the second VM to the second VTEP when detecting that the second VTEP requests synchronization of the forwarding information of the second VM comprises:

8. The method of claim 5, wherein sending a second synchronization message for the forwarding information of the second VM to the second VTEP when detecting that the second VTEP requests synchronization of the forwarding information of the second VM comprises:

9. An apparatus for generating a forwarding table entry of an MLAG networking, the apparatus being applied to a first extensible virtual local area network tunnel endpoint, VTEP, in a distributed aggregation system, the distributed aggregation system further including a second VTEP, where a forwarding table entry stored in the first VTEP is different from a forwarding table entry stored in the second VTEP, the apparatus comprising:

10. An electronic device comprising a processor and a machine-readable storage medium storing machine-executable instructions executable by the processor, the processor being caused by the machine-executable instructions to: carrying out the method steps of any one of claims 1 to 8.

11. A computer-readable storage medium, characterized in that a computer program is stored in the computer-readable storage medium, which computer program, when being executed by a processor, carries out the method steps of any one of the claims 1-8.