WO2018121443A1

WO2018121443A1 - Message transmission method and device

Info

Publication number: WO2018121443A1
Application number: PCT/CN2017/118046
Authority: WO
Inventors: 张行柱; 陈志伟; 夏迎春
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-12-30
Filing date: 2017-12-22
Publication date: 2018-07-05
Also published as: CN108270653A

Abstract

Provided are a message transmission method and device. The method comprises: according to FCoE node identifier information stored in a first FCoE forwarder, creating a VXLAN channel for supporting an FCoE service, wherein the VXLAN channel connects the first FCoE forwarder and a second FCoE forwarder; and transmitting a FCoE data message to be transmitted in the first FCoE forwarder to the second FCoE forwarder via the VXLAN channel.

Description

Message transmission method and device

Technical field

The present invention relates to the field of communications, and in particular to a message transmission method and apparatus.

Background technique

The birth of Fiber Channel over Ethernet (FCoE) technology stems from the need for integration. FCoE is not intended to replace traditional Fibre Channel technology, but to extend Fibre Channel over different connected transport layers. The FCoE virtual link is divided into three phases: the FCoE Initialization Protocol (FIP) Virtual Local Area Network (VLAN) discovery phase, and the FIP FCoE Forwarder (FCF) discovery phase. Switch login phase. FIP is used to discover, initialize, and maintain FCoE devices. The Ethernet type of FIP is different from the Ethernet type of FCoE. FIP is used to discover, initialize, and maintain FCoE virtual links with different traffic than other FCoE traffic.

With the advent of big data and the increasing demand for data information, a single FCoE technology can not fully meet the complex and varied network environment. In the case of FCoE data transmission in a large virtual logical network (for example, Virtual eXtensible Local Area Network (VXLAN)), if traditional FCoE technology is used, each switch needs to support FCF function, and It has a certain amount of VLAN resources, which limits the flexibility of the business.

Summary of the invention

The present invention provides a packet transmission method and apparatus, so as to solve at least the problem that the FCF function must be supported by each switch in the case of transmitting FCoE data in a large virtual logical network in the related art, thereby causing inflexibility of FCoE data transmission. .

According to an aspect of the present invention, a message transmission method is provided, including: creating a VXLAN tunnel supporting FCoE services according to FCoE node identifier information stored in a first FCF, wherein the VXLAN tunnel is connected to a first FCF and a Two FCF; and The FCoE data packet to be transmitted in the first FCF is transmitted to the second FCF through the VXLAN tunnel.

According to another aspect of the present invention, a packet transmission apparatus is provided, including: a creating module, configured to create a VXLAN tunnel supporting FCoE services according to FCoE node identifier information stored in a first FCF, wherein the VXLAN tunnel Connecting the first FCF and the second FCF; and the transmitting module, configured to transmit the FCoE data packet to be transmitted in the first FCF to the second FCF through the VXLAN tunnel.

DRAWINGS

The drawings of the present disclosure are intended to provide a further understanding of the concepts of the present invention and constitute a part of this application. The illustrative embodiments of the present invention and the description thereof are intended to explain the present invention and are not intended to limit the invention. In the drawing:

1 is a flowchart of a message transmission method according to an embodiment of the present invention;

2 is a flowchart of a message transmission method according to another embodiment of the present invention;

3 is a block diagram showing the structure of a message transmission apparatus according to an embodiment of the present invention;

4 is a structural block diagram of a creation module of a message transmission apparatus according to an embodiment of the present invention shown in FIG. 3;

5 is a structural block diagram of a transmission module of the message transmission apparatus according to the embodiment of the present invention shown in FIG. 3;

FIG. 6 is a structural block diagram of a message transmission apparatus according to another embodiment of the present invention; FIG.

7 is a structural block diagram of a decapsulation unit in a message transmission apparatus according to an example of the present invention shown in FIG. 6;

FIG. 8 is a block diagram showing the structure of a message transmission apparatus according to another embodiment of the present invention.

detailed description

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

It should be noted that the terms "first", "second" and the like in the specification and claims of the present invention and the drawings are only used to distinguish similar objects instead of limiting. It is also not necessary to describe a particular order or order.

1 is a flow chart of a message transmission method according to an embodiment of the present invention.

As shown in FIG. 1, a message transmission method according to an embodiment of the present invention may include steps S102 and S104.

In the step S102, a VXLAN tunnel supporting the FCoE service is created according to the FCoE Node Identifier (FCID) information stored in the first FCF, where the VXLAN tunnel connects the first FCF and the second FCF.

According to an embodiment of the present invention, step S102 may include: acquiring a destination FCID carried in the FCID information; determining an FCF corresponding to the destination FCID as the second FCF; and creating a support FCoE service between the first FCF and the second FCF VXLAN tunnel.

In step S104, the FCoE data packet to be transmitted in the first FCF is transmitted to the second FCF through the VXLAN tunnel.

According to the embodiment of the present invention, the step S104 may include: encapsulating a VXLAN packet header for the FCoE data packet; and transmitting the FCoE data packet encapsulating the VXLAN packet header to the destination FCID according to the destination FCID carried in the FCID information. Corresponding second FCF.

According to the embodiment of the present invention, after the FCoE data packet encapsulating the VXLAN packet header is transmitted to the second FCF corresponding to the destination FCID, the second FCF may decompose the FCoE data packet encapsulating the VXLAN packet header. The packet is obtained to obtain a Fibre Channel (FC) packet, and the destination FCID in the FC packet is obtained. The FC packet carries the FCID information. The forwarding table of the second FCF is queried according to the destination FCID to obtain a second FCoE node corresponding to the FCID in the forwarding table. The FCoE data packet generated after the Ethernet packet header is encapsulated in the FC packet is sent to the second FCoE node.

According to the embodiment of the present invention, the FCoE data packet encapsulated with the VXLAN packet header may be first decapsulated to obtain the FCoE data packet, and the second decapsulation is performed on the FCoE data packet to obtain the FC packet. . The destination FCID can be obtained by parsing the FC message.

According to an embodiment of the present invention, the second decapsulation of the FCoE data message may be performed by decapsulating the FCoE data packet and removing the Ethernet packet header to obtain the FC message.

According to an embodiment of the present invention, when the FIP protocol sent by the first FCoE node is identified When the message carries the FCID information, the FCID information may be stored in the routing table of the first FCF.

According to the packet transmission method of the embodiment of the present invention, a VXLAN tunnel supporting the FCoE service is created according to the FCID information stored in the first FCF, and the VXLAN tunnel connects the first FCF and the second FCF, and the FCoE to be transmitted in the first FCF Data packets are transmitted to the second FCF through the VXLAN tunnel. Thus, a new method for transmitting FCoE messages over Ethernet is provided on the basis of the VXLAN Ethernet tunnel. The VXLAN tunnel can be updated according to the FCID stored by the FCF so that FCoE data packets can be identified and transmitted in the VXLAN tunnel. This approach provides an application scenario for FCoE technology in large virtual networks, while also increasing the convergence of FCoE and Ethernet.

2 is a flow chart of a message transmission method according to another embodiment of the present invention.

As shown in FIG. 2, the message transmission method according to an embodiment of the present invention may include steps S201 to S211.

In step S201, the FCF, the FCoE node (FCoE Node, ENode), and the VXLAN are initially configured.

In step S202, the ENode sends a FIP protocol packet to the FCF to request to establish a FIP virtual link.

In step S203, the FCF establishes a FIP virtual link according to the received FIP protocol packet, and allocates a Fabric Provided MAC Address (FPMA) to the ENode.

In step S204: the VXLAN network creates a VXLAN tunnel with FCoE characteristics according to the ECo's FCoE routing information (ie, FCID information), and updates the VXLAN tunnel.

In step S205, the first ENode sends the FCoE data message to the first FCF.

In step S206, the first FCF determines whether to transmit via the VXLAN tunnel according to the destination FCID carried in the FCID information.

In step S207: if the result of the determination is that the transmission is via the VXLAN tunnel, the VXLAN packet header is encapsulated for the FCoE data packet, and sent to the second FCF through the VXLAN tunnel;

In step S208, the second FCF receives the FCoE data packet encapsulated with the VXLAN packet header, and performs decapsulation to remove the VXLAN packet header.

In step S209, the second FCF determines whether it is a two-layer exchange or a three-layer exchange.

In step S210, in the case that the decision is a three-layer exchange, the FCoE Layer 3 routing table is queried, and the FCoE data packet is forwarded to the second ENode according to the search result.

In step S211, in the case that the decision is a Layer 2 switching, the FCoE Layer 2 forwarding table is queried, and the FCoE data packet is forwarded to the second ENode according to the search result.

The message transmission method according to the embodiment of the present invention solves the problem that in the related art, when the FCoE data is transmitted in a large virtual logical network, each switch must support the FCF function, thereby causing inflexibility of FCoE data transmission, and expanding the problem. The application scenario of FCoE technology in a large virtual logical Ethernet scenario enhances the convergence of FC network and Ethernet.

Through the description of the above embodiments, those skilled in the art can clearly understand that the message transmission method according to the embodiment can be implemented by means of software in a general hardware platform, and of course, can also be implemented only by hardware. The technical solution of the inventive concept may be embodied in the form of a computer software product stored in a storage medium (such as a ROM/RAM, a magnetic disk, an optical disk), and includes a plurality of instructions for causing a terminal device (for example, a mobile phone or a computer) A server, a network device, or the like) performs a message transmission method according to various embodiments of the present invention.

FIG. 3 is a block diagram showing the structure of a message transmission apparatus according to an embodiment of the present invention. The message transmission apparatus according to this embodiment is for implementing the message transmission method according to the foregoing implementation. The details that have already been explained will not be described again.

As used herein, the term "module" can be a combination of software and/or hardware that implements a predetermined function. Although the message transmission apparatus according to the embodiment described below can be understood to be implemented by using a software module, the technical solution of the inventive concept can also be implemented by hardware or a combination of software and hardware.

As shown in FIG. 3, the message transmission apparatus 300 according to an embodiment of the present invention may include a creation module 32 and a transmission module 34. The creating module 32 is configured to create a VXLAN tunnel supporting the FCoE service according to the FCID information stored in the first FCF, where the VXLAN tunnel connects the first FCF and the second FCF. The transmission module 34 is configured to transmit the FCoE data packet to be transmitted in the first FCF to the second FCF through the VXLAN tunnel.

FIG. 4 is a block diagram showing the structure of the creation module 32 of the message transmission apparatus 300 shown in FIG. 3 according to an embodiment of the present invention.

As shown in FIG. 4, the creation module 32 can include a first acquisition unit 322, a determination unit 324, and a creation unit 326. The first obtaining unit 322 is configured to acquire the destination FCID carried in the FCID information. The determining unit 324 is configured to determine the FCF corresponding to the destination FCID as the second FCF. The creating unit 326 is configured to create a VXLAN tunnel supporting the FCoE service between the first FCF and the second FCF.

FIG. 5 is a block diagram showing the structure of a transmission module 34 of the message transmission apparatus 300 shown in FIG. 3 according to an embodiment of the present invention.

As shown in FIG. 5, the transmission module 34 can include a package 342 and a transmission unit 344. The encapsulating unit 342 is configured to encapsulate the VXLAN packet header for the FCoE data packet. The transmitting unit 344 is configured to transmit the FCoE data packet encapsulating the VXLAN packet header to the second FCF corresponding to the destination FCID according to the destination FCID carried in the FCID information.

FIG. 6 is a structural block diagram of a message transmission apparatus according to another embodiment of the present invention.

As shown in FIG. 6, the message transmission apparatus 600 according to the present embodiment may further include a decapsulation unit 62, a second acquisition unit 64, and a transmission unit 66, as compared with the embodiment shown in FIG. The decapsulation unit 62 is configured to decapsulate the FCoE data packet encapsulated with the VXLAN packet header to obtain the FC message, and obtain the destination FCID in the FC message, where the FC message carries the FCID information. The second obtaining unit 64 is configured to query the forwarding table of the second FCF according to the destination FCID to obtain the second FCoE node corresponding to the FCID in the forwarding table. The sending unit 66 is configured to send the FCoE data packet generated after the Ethernet packet header is encapsulated to the second FCoE node.

FIG. 7 is a block diagram showing the structure of the decapsulation unit 62 in the message transmission apparatus 600 according to the example of the present invention shown in FIG. 6.

As shown in FIG. 7, the decapsulation unit 62 can include a first decapsulation subunit 622, a second decapsulation subunit 624, and a parsing subunit 626. The first decapsulation sub-unit 622 is configured to perform a first decapsulation on the FCoE data packet encapsulated with the VXLAN packet header to obtain the FCoE data packet. The second decapsulation sub-unit 624 is configured to perform a second decapsulation on the FCoE data packet to obtain the FC message. The parsing sub-unit 626 is configured to parse and obtain the destination FCID in the FC message.

According to an embodiment of the present invention, the second decapsulation subunit 624 may perform the first for the FCoE data message by decapsulating the FCoE data message and removing the Ethernet message header. The second decapsulation is to obtain the FC message.

According to an embodiment of the present invention, the message transmission device 600 may further include a storage module 36. When it is recognized that the FIP protocol packet sent by the first FCoE node carries the FCID information, the storage module 36 stores the FCID information in the routing table of the first FCF.

According to the message transmission apparatus of the present embodiment, the virtual extension LAN VXLAN tunnel supporting the FCoE service is created according to the FCID information stored in the first FCF, and the to-be-transmitted in the first FCF is implemented by the creation module 32 and the transmission module 34. The FCoE data packet is transmitted to the second FCF through the VXLAN tunnel, which solves the problem that the FCF function must be supported by each switch in the case of transmitting FCoE data in a large virtual logical network in the related art, thereby causing inflexibility of FCoE data transmission. It expands the application scenario of FCoE in large virtual logical Ethernet scenarios and enhances the integration of FC network and Ethernet.

As shown in FIG. 8, the message transmission apparatus according to the present embodiment may include an ENode module 82, an FCF/VXLAN access switch module 84, and a VXLAN network module 86.

The ENode module 82 is used for establishing an FCoE virtual link and transmitting and receiving FIP protocol packets and FCoE data packets.

In accordance with an embodiment of the present invention, the ENode module 82 can be used to set up an FCoE setup link configuration including, but not limited to, VLAN, WWPN, WWNN, FC-MAP, and the like. When the link is established, the ENode module 82 can actively send the FIP protocol packet to the FCF.

The FCF/VXLAN access switch module 84 is configured to receive the FIP protocol packet sent by the ENode module 82, establish a virtual link with the ENode module 82, establish a VXLAN tunnel with the VXLAN network module 86, and accept and forward the FCoE data packet.

In accordance with an embodiment of the present invention, the FCF/VXLAN access switch module 84 is both part of the FCoE link and part of the VXLAN network. Therefore, the FCF/VXLAN access switch module 84 is required to encapsulate and decapsulate FCoE headers, and to encapsulate and decapsulate VXLAN headers.

The VXLAN network module 86 is used to establish a VXLAN Ethernet tunnel based on the destination FCID and transparently transmit the FCoE protocol and data packets.

The message transmission apparatus according to the embodiment of the present invention is implemented by the ENode module 82, the FCF/VXLAN access switch module 84, and the VXLAN network module 86. The FCID information stored in the FCF creates a virtual scalable LAN VXLAN tunnel that supports the FCoE service, and transmits the FCoE data packet to be transmitted in the first FCF to the second FCF through the VXLAN tunnel, thereby solving the related art in the large virtual logic. When FCoE data is transmitted in the network, each switch must support the FCF function, which causes the FCoE data transmission to be inflexible. It extends the application scenarios of FCoE in large virtual logical Ethernet scenarios, and enhances FC network and Ethernet. Convergence.

Those skilled in the art will appreciate that the various modules or steps of the present invention can be implemented with a general purpose computing device. Implementations of the various modules or steps of the present invention can be centralized on a single computing device or distributed across a network of multiple computing devices. Modules or steps of the present invention may be implemented with program code executable by a computing device, such that the storage may be performed by the computing device in a storage device, and in some cases, may be performed in accordance with embodiments of the present invention. The steps shown or described are performed in a different order than described herein. Modules or steps of the present invention may be implemented as respective integrated circuit modules, or multiple of them may be implemented as a single integrated circuit module, in accordance with an embodiment of the present invention. Thus, the invention is not limited to any specific combination of hardware and software.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

A message transmission method includes:

Creating a virtual scalable local area network VXLAN tunnel supporting FCoE services according to the Fibre Channel over Ethernet FCoE node identifier FCID information stored in the first Fibre Channel Forwarder FCF, wherein the VXLAN tunnel connects the first FCF and the second FCF; and

And transmitting, by the VXLAN tunnel, the FCoE data packet to be transmitted in the first FCF to the second FCF.
The method of claim 1, wherein the step of creating a VXLAN tunnel supporting the FCoE service according to the FCID information stored in the first FCF comprises:

Obtaining the destination FCID carried in the FCID information;

Determining an FCF corresponding to the destination FCID as the second FCF;

A VXLAN tunnel supporting the FCoE service is created between the first FCF and the second FCF.
The method of claim 1, wherein the step of transmitting the FCoE data message to be transmitted in the first FCF to the second FCF through the VXLAN tunnel comprises:

Encapsulating a VXLAN packet header for the FCoE data packet;

And transmitting, according to the destination FCID carried in the FCID information, the FCoE data packet encapsulating the VXLAN packet header to the second FCF corresponding to the destination FCID.
The method of claim 3, wherein after the FCoE data packet encapsulating the VXLAN packet header is transmitted to the second FCF corresponding to the destination FCID, the method further includes:

The FCoE data packet encapsulated with the VXLAN packet header is decapsulated to obtain the Fibre Channel FC packet, and the destination FCID in the FC packet is obtained, where the FC packet carries the FCID information;

Querying, according to the destination FCID, a forwarding table of the second FCF, to obtain a second FCoE node corresponding to the FCID in the forwarding table;

The FCoE data packet generated after the Ethernet packet header is encapsulated in the FC packet is sent to the second FCoE node.
The method of claim 4, wherein the step of decapsulating the FCoE data packet encapsulating the VXLAN packet header to obtain the FC message and obtaining the destination FCID in the FC packet includes:

Performing a first decapsulation on the FCoE data packet encapsulated with the VXLAN packet header to obtain the FCoE data packet;

Performing a second decapsulation on the FCoE data packet to obtain the FC packet;

Parsing and obtaining the destination FCID in the FC message.
The method of claim 5, wherein the step of performing the second decapsulation of the FCoE data message comprises:

The FCoE data packet is decapsulated and the Ethernet packet header is removed to obtain the FC packet.
The method according to any one of claims 1 to 6, wherein before the VXLAN tunnel supporting the FCoE service is created according to the FCID information stored in the first FCF, the method further includes:

The FCID information is stored in the routing table of the first FCF when it is identified that the Fibre Channel Initialization Protocol FIP protocol packet sent by the first FCoE node carries the FCID information.
A message transmission device comprising:

a creating module, configured to create a virtual scalable local area network VXLAN tunnel supporting FCoE services according to the Fibre Channel FCoE node identifier FCID information stored in the first Fibre Channel Forwarder FCF, where the VXLAN tunnel connects the One FCF and second FCF;

And a transmission module, configured to transmit the FCoE data packet to be transmitted in the first FCF to the second FCF through the VXLAN tunnel.
The apparatus of claim 8, wherein the creating module comprises:

a first acquiring unit, configured to acquire a destination FCID carried in the FCID information;

a determining unit, configured to determine an FCF corresponding to the destination FCID as the second FCF;

And a creating unit, configured to create a VXLAN tunnel supporting the FCoE service between the first FCF and the second FCF.
The apparatus of claim 8 wherein said transmission module comprises:

a packaging unit, configured to encapsulate a VXLAN packet header for the FCoE data packet;

The transmitting unit is configured to transmit, according to the destination FCID carried in the FCID information, the FCoE data packet encapsulated with the VXLAN packet header to the second FCF corresponding to the destination FCID.
The apparatus of claim 10 further comprising:

a decapsulation unit, configured to decapsulate a FCoE data packet encapsulating a VXLAN packet header to obtain a Fibre Channel FC packet, and obtain a destination FCID in the FC packet, where the FC packet carries The FCID information;

a second obtaining unit, configured to query, according to the destination FCID, a forwarding table of the second FCF, to obtain a second FCoE node corresponding to the FCID in the forwarding table;

And a sending unit, configured to send, to the second FCoE node, the FCoE data packet generated after the Ethernet packet header is encapsulated in the FC packet.
The apparatus of claim 11, wherein the decapsulation unit comprises:

a first decapsulating sub-unit, configured to perform a first decapsulation on the FCoE data packet encapsulated with the VXLAN packet header to obtain the FCoE data packet;

a second decapsulation subunit, configured to perform a second decapsulation on the FCoE data packet, Obtaining the FC message;

The parsing subunit is configured to parse and obtain the destination FCID in the FC message.
The apparatus according to claim 12, wherein the second decapsulation subunit is further configured to decapsulate the FCoE data packet and remove an Ethernet packet header to obtain the FC message.
The device according to any one of claims 8 to 13, further comprising a storage module, when the FC Fibre Channel Initialization Protocol FIP protocol message sent by the first FCoE node is carried, the storage module is The FCID information is stored in a routing table of the first FCF.