CN106101008B - A kind of transmission method and device of message - Google Patents

A kind of transmission method and device of message Download PDF

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Publication number
CN106101008B
CN106101008B CN201610380272.8A CN201610380272A CN106101008B CN 106101008 B CN106101008 B CN 106101008B CN 201610380272 A CN201610380272 A CN 201610380272A CN 106101008 B CN106101008 B CN 106101008B
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China
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gateway
message
vtep equipment
response message
sent
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CN201610380272.8A
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Chinese (zh)
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CN106101008A (en
Inventor
黄李伟
陈岩
王伟
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新华三技术有限公司
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Abstract

The present invention provides the transmission method and device of a kind of message, this method comprises: the first message is sent to gateway, so that the gateway sends the response message for being directed to first message;The response message sent using gateway selects the gateway communicated with VTEP equipment;The second message from host is received, and second message is sent to the gateway of selection.According to the technical solution of the present invention, it is ensured that the propagation delay time of the second message is minimum, avoids the second message to be transmitted on congestion path as far as possible, and can reduce and the case where traffic congestion occur, improves the business usage experience of user.

Description

A kind of transmission method and device of message

Technical field

The present invention relates to field of communication technology more particularly to the transmission methods and device of a kind of message.

Background technique

EVPN (Ethernet Virtual Private Network, Ethernet Virtual Private Network) is for Ethernet industry A kind of new model that business introduces, operator can be in high bandwidths, complicated QoS (Quality of Service, service quality) With secure SLA (Service Level Agreement, service-level agreement) etc., meets the needs of evolution.Such as figure It is the networking schematic diagram of EVPN shown in 1.VTEP (VXLAN Tunnel End Point, VXLAN endpoint of a tunnel) equipment and website (Site) in host (such as VM (Virtual Machine, virtual machine etc.) connection, and between each VTEP equipment establish have neighbours Relationship and tunnel, such as VXLAN (Virtual eXtensible Local Area Network, virtual expansible local Net) tunnel.

It is double layer network in each website in EVPN, VTEP equipment (such as VTEP equipment 1) needs to learn each in this website ARP (Address Resolution Protocol, address resolution protocol) forwarding-table item of host, and ARP forwarding-table item is same It walks and gives neighbours VTEP equipment (such as VTEP equipment 2 or VTEP equipment 3).Meanwhile VTEP equipment also can receive neighbours VTEP and set Standby synchronous ARP forwarding-table item.

Summary of the invention

The present invention provides a kind of transmission method of message, described applied in the VTEP equipment in stateless gateway networking Method includes: to send the first message to gateway, so that gateway sends the response message for being directed to first message;Benefit The response message sent with gateway selects the gateway communicated with VTEP equipment;The second message from host is received, And the second message is sent to the gateway of selection.

The present invention provides a kind of transmission method of message, described applied in the gateway in stateless gateway networking Method is the following steps are included: receive the first message from VTEP equipment;It sends to the VTEP equipment for first report The response message of text, so that the response message that the VTEP equipment utilization gateway is sent, what selection was communicated with VTEP equipment Gateway.

The present invention provides a kind of transmitting device of message, described applied in the VTEP equipment in stateless gateway networking Device specifically includes: the first sending module, for sending the first message to gateway, so that gateway transmission is directed to The response message of first message;Selecting module, the response message for being sent using gateway, selection and VTEP equipment The gateway of communication;Second sending module is sent to for receiving the second message from host, and by second message The gateway of selection.

The present invention provides a kind of transmitting device of message, described applied in the gateway in stateless gateway networking Device specifically includes: receiving module, for receiving the first message from VTEP equipment;Sending module is used for VTEP equipment Send be directed to first message response message so that VTEP equipment utilization gateway send response message, selection with The gateway of VTEP equipment communication.

Based on the above-mentioned technical proposal, in the embodiment of the present invention, it can use the response message that each gateway is sent, selection The gateway communicated with this VTEP equipment, so as to select the smallest gateway of Delay as with this VTEP equipment The gateway of communication.When the second message is sent to the gateway, it is ensured that the propagation delay time of the second message is minimum, It avoids the second message to be transmitted on congestion path as far as possible, and can reduce and the case where traffic congestion occur, improve user's Business usage experience.

Detailed description of the invention

It, below will be to the present invention in order to clearly illustrate the embodiment of the present invention or technical solution in the prior art Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below Attached drawing is only some embodiments recorded in the present invention for those of ordinary skill in the art can also be according to these Attached drawing obtains other attached drawings.

Fig. 1 is the networking schematic diagram for not disposing the EVPN of gateway;

Fig. 2 is the networking schematic diagram for disposing the EVPN of gateway;

Fig. 3 is the flow chart of the transmission method of the message in one embodiment of the present invention;

Fig. 4 is the flow chart of the transmission method of the message in another embodiment of the present invention;

Fig. 5 is the hardware structure diagram of the VTEP equipment in one embodiment of the present invention;

Fig. 6 is the structure chart of the transmitting device of the message in one embodiment of the present invention;

Fig. 7 is the hardware structure diagram of the gateway in one embodiment of the present invention;

Fig. 8 is the structure chart of the transmitting device of the message in one embodiment of the present invention.

Specific embodiment

In terminology used in the present invention merely for the sake of for the purpose of describing particular embodiments, it is not intended to limit the present invention.This hair The "an" of singular used in bright and claims, " described " and "the" are also intended to including most forms, unless Context clearly shows that other meanings.It is also understood that term "and/or" used herein refers to comprising one or more Associated any or all of project listed may combine.

It will be appreciated that though various information, but this may be described using term first, second, third, etc. in the present invention A little information should not necessarily be limited by these terms.These terms are only used to for same type of information being distinguished from each other out.For example, not departing from In the case where the scope of the invention, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as One information.Depending on context, in addition, used word " if " can be construed to " ... when " or " when ... " Or " in response to determination ".

In EVPN, when VTEP equipment is communicated with the outer net equipment of external network, it is usually deployed gateway, such as Fig. 2 It is shown, for the networking schematic diagram of the EVPN of deployment gateway.For the message transmission procedure between VTEP equipment, message is not required to To pass through gateway.For the message transmission procedure of VTEP equipment and outer net equipment, message is needed by gateway.This hair In bright embodiment, refer to the message transmission procedure of VTEP equipment Yu outer net equipment.When EVPN is there are when multiple VTEP equipment, respectively The process flow of VTEP equipment is identical, for the convenience of description, being illustrated by taking a VTEP equipment as an example in Fig. 2.

In order to carry out error protection and load balancing to gateway, it will usually multiple gateways are disposed, with portion in Fig. 2 It affixes one's name to and is illustrated for two gateways, in practical application, the gateway of three or more can also be disposed, handle Process is identical as the process flow of two gateways, subsequent to repeat no more.

The embodiment of the present invention can be applied under the network environment of stateless gateway, under the network environment include two or More than two gateways, and each gateway refers to stateless gateway.Stateless gateway refers to: all gateway (such as Fig. 2 In gateway 1 and gateway 2) IP address and MAC (Media Access Control, media access control) address All the same, if the IP address of gateway 1 and gateway 2 is 1.1.1.1, MAC Address is a-a-a.In this way, for For VTEP equipment, gateway 1 and gateway 2 are equivalent to a gateway, and VTEP equipment does not have to distinguish each gateway Equipment.

In addition, VTEP equipment also needs to learn the ARP forwarding-table item of each host in this website, and the ARP that will learn Forwarding-table item is synchronized to gateway 1 and gateway 2, and the IP address of the ARP forwarding-table item is the IP address of host 1, MAC Location is the MAC Address of VTEP equipment.Later, gateway 1 and gateway 2 utilize the ARP forwarding-table item, in local maintenance phase The MAC forwarding-table item answered, the IP address of the MAC forwarding-table item be the IP address of host 1, and MAC Address is the MAC of VTEP equipment Location, exit port are the port for receiving ARP forwarding-table item in gateway 1 and gateway 2.

Wherein, VTEP equipment can be by BGP (Border Gateway Protocol, Border Gateway Protocol) message, will ARP forwarding-table item is synchronized to gateway 1 and gateway 2.Based on this, receiving in gateway 1 and gateway 2 The port of ARP forwarding-table item exactly receives the port of BGP message.

Under above-mentioned application scenarios, host 1 is sent to the process flow of the message 1 of outer net equipment are as follows: VTEP equipment is connecing After receiving the message 1 from host 1, according to actual needs, message 1 is sent to gateway 1 or gateway 2.Net Equipment 1 or gateway 2 are closed after receiving message 1, message 1 is sent to outer net equipment.Further, outer net equipment It is sent to the process flow of the message 2 of host 1 are as follows: outer net equipment is after receiving the message 1 from gateway 1, to net It closes equipment 1 and sends message 2.Gateway 1 is after receiving message 2, purpose IP address (such as IP of host 1 based on message 2 Address), above-mentioned MAC forwarding-table item can be found, and with being revised as the MAC of VTEP equipment by the target MAC (Media Access Control) address of message 2 Message 2 is sent to VTEP equipment by location, and the exit port based on MAC forwarding-table item.VTEP equipment, will after receiving message 2 Message 2 is sent to host 1.

In order to realize above-mentioned message transmission procedure, the tunnel VXLAN is established between VTEP equipment and gateway, source address is The IP address of VTEP equipment, destination address is the IP address of gateway, and the IP address of each gateway is identical.Such as Fig. 2 It is shown, for gateway 1 and gateway 2, the tunnel VXLAN 1 is established in VTEP equipment, source address is VTEP equipment IP address 2.2.2.2, destination address is the IP address 1.1.1.1 of 1/ gateway 2 of gateway, and corresponding VXLAN mark 1.The tunnel VXLAN 2 is established in gateway 1, source address is the IP address 1.1.1.1 of gateway 1, and destination address sets for VTEP Standby IP address 2.2.2.2, and corresponding VXLAN mark 1.The tunnel VXLAN 3 is established in gateway 2, source address is gateway 2 IP address 1.1.1.1, destination address is the IP address 2.2.2.2 of VTEP equipment, and corresponding VXLAN identifies 1.Based on VXLAN Tunnel 1, VTEP equipment can send message to gateway 1 or gateway 2.Based on the tunnel VXLAN 2, gateway 1 can To send message to VTEP equipment.Based on the tunnel VXLAN 3, gateway 2 can send message to VTEP equipment.

Based on above-mentioned process flow, it may appear that following situation: VTEP equipment according to actual needs, may be by a large amount of message It is sent to gateway 1, and a small amount of message is sent to gateway 2, thus cause gateway 1 busier, and net Pass equipment 2 compares idle.Moreover, the path between VTEP equipment and gateway 1 may be the forward-path of congestion, it is possible to Within a certain period of time, there is congestion situation in the path between VTEP equipment and gateway 1, so as to cause there is traffic congestion The case where.

For above-mentioned discovery, a kind of transmission method of message is proposed in the embodiment of the present invention, this method can be applied to nothing It in state gateway networking, and may include VTEP equipment and multiple gateways in the stateless gateway networking.With Fig. 2 for this hair The application scenarios schematic diagram of bright embodiment, by taking two gateways as an example, the IP address and MAC of gateway 1 and gateway 2 Site homogeneous is same, if the IP address of gateway 1 and gateway 2 is 1.1.1.1, gateway 1 and gateway 2 MAC Address is a-a-a.

Herein, it is related to the message proposed in the embodiment of the present invention for detecting Delay and existing skill The host proposed in art is sent to the message of outer net equipment.In order to distinguish conveniently, the message for being used to detect Delay is known as The message that host is sent to outer net equipment is known as the second message by the first message.Wherein, the first message is a kind of detection messages, It can be the detection messages of UDP (User Datagram Protocol, User Datagram Protocol) type.Second message can be Data message or protocol massages etc. (it should be noted that on other occasions, it can be using the second message as the first message For detecting Delay).

Under above-mentioned application scenarios, as shown in figure 3, the transmission method of the message proposed in the embodiment of the present invention, Ke Yiying For the VTEP equipment in stateless gateway networking, and this method may comprise steps of:

Step 301, the first message is sent to gateway, so that gateway sends the response report for being directed to the first message Text.For example, VTEP equipment sends the first message 1 to gateway 1, so that gateway 1 under application scenarios shown in Fig. 2 Send the response message 1 for being directed to the first message 1.VTEP equipment sends the first message 2 to gateway 2, so that gateway 2 is sent out Send the response message 2 for the first message 2.

Step 302, the response message sent using gateway selects the gateway communicated with VTEP equipment.For example, The response message 2 of response message 1, the transmission of gateway 2 that VTEP equipment utilization gateway 1 is sent, selection and VTEP equipment The gateway of communication is gateway 1 or gateway 2.

Step 303, the second message from host is received, and the second message is sent to the gateway of selection.For example, Second message is sent to the gateway 1 or gateway 2 of selection by VTEP equipment.

In existing implementation, VTEP equipment is sent to the message (the second i.e. above-mentioned message) of gateway, gateway Second message can be sent to outer net equipment by equipment.On this basis, for step 301, in the embodiment of the present invention, in order to make Gateway can send the response for being directed to the first message after receiving the first message from VTEP equipment to VTEP equipment Message, rather than the first message is sent to outer net equipment, then it needs to improve existing transmission mode, i.e. VTEP equipment Make there is improved transmission mode to send the first message to gateway, so that gateway is sent to VTEP equipment is directed to first The response message of message.

In one example, default identification information is carried in the first message, which is used to indicate gateway and sets Preparation send response message, i.e. instruction gateway sends the response message for being directed to the first message to VTEP equipment.Based on this, gateway Equipment is after receiving the first message from VTEP equipment, if parsing the default identification information from the first message, to VTEP equipment sends the response message for being directed to the first message, and default identification information, the pre- bidding are also carried in the response message Know information and is also used to identify the gateway.

As shown in Fig. 2, in one example, the first message can be sent to gateway by the tunnel VXLAN 1 by VTEP equipment Equipment 1, and it is directed to the response message of the first message in order to send gateway 1 to VTEP equipment, rather than by the first message Be sent to outer net equipment, then can carry default identification information in the first message, as this preset identification information can for 1 difference of VXLAN mark and the VXLAN mark being not used by, such as VXLAN mark 100.Based on this, gateway 1 is being connect After receiving the first message, due to carrying the default identification information in the first message, and the default identification information is used to indicate gateway Equipment 1 sends response message, and therefore, gateway 1 sends the response message for being directed to the first message to VTEP equipment.Unlike this , gateway 1 is after receiving the second message, due to not carrying default identification information (i.e. in the second message VXLAN100), therefore, gateway 1 is to outer net device forwards second message.

Similarly, the first message can be sent to by VTEP equipment by the tunnel VXLAN 1 for processing with gateway 1 Gateway 2, and it is directed to the response message of the first message in order to send gateway 2 to VTEP equipment, rather than by first Message is sent to outer net equipment, then default identification information can be carried in the first message, can be as this presets identification information A VXLAN that is different from VXLAN mark 1 and being not used by is identified, such as VXLAN mark 200.Based on this, gateway 2 exists After receiving the first message, due to carrying the default identification information in the first message, and the default identification information is used to indicate net It closes equipment 2 and sends response message, therefore, gateway 2 sends the response message for being directed to the first message to VTEP equipment.Not with this With, gateway 2 is after receiving the second message, due to not carrying default identification information (i.e. VXLAN200), net Equipment 2 is closed to outer net device forwards second message.

Under aforesaid way, the transmission channel of the first message has been multiplexed the existing tunnel VXLAN 1, and in order to be reported with second Text distinguishes, then can carry in the first message and identify 1 different default identification information from VXLAN, therefore, it is necessary to be net It closes equipment application and presets identification information, and the default identification information is used to indicate gateway and sends response message.In addition, in order to Different gateways is distinguished, is that the default identification information of different gateway applications is different.In this way, what gateway was sent Default identification information can also be carried in response message, VTEP equipment can distinguish gateway using the default identification information and set It is standby.

For example, VTEP equipment is VXLAN mark 100 for the default identification information that gateway 1 obtains, set for gateway The standby 2 default identification informations obtained are VXLAN mark 200.VTEP equipment can be believed from given server application to default mark Breath can also be configured default identification information by user in VTEP equipment.VXLAN mark 100 is being got for gateway 1 Afterwards, VXLAN mark 100 can be sent to gateway 1, gateway 1 can be safeguarded by BGP message by VTEP equipment The corresponding relationship of VXLAN mark 100 and the reversed tunnel VXLAN in the tunnel VXLAN 1, the reversed tunnel VXLAN, that is, above-mentioned The tunnel VXLAN 2.VXLAN mark 200 can be sent to gateway 2, gateway 2 can by BGP message by VTEP equipment To safeguard the corresponding relationship of VXLAN mark 200 with the reversed tunnel VXLAN in the tunnel VXLAN 1, the reversed tunnel VXLAN, that is, above-mentioned The tunnel VXLAN 3.

In this way, gateway 1 after receiving the first message, parses VXLAN mark 100 from the first message, and lead to The corresponding tunnel VXLAN 2 is crossed, the response message for being directed to the first message is sent to VTEP equipment.Gateway 2 is receiving first After message, VXLAN mark 200 is parsed from the first message, and by the corresponding tunnel VXLAN 3, sends needle to VTEP equipment To the response message of the first message.

VXLAN mark 100 can also be carried in the response message that gateway 1 is sent to VTEP equipment, be based on the VXLAN Mark 100, VTEP equipment can know that the response message is that gateway 1 is sent.Gateway 2 is sent to VTEP equipment VXLAN mark 200 can also be carried in response message, which can be known based on VXLAN mark 200, VTEP equipment Text is that gateway 2 is sent.

In one example, can also have been established between VTEP equipment and gateway the specified tunnel VXLAN (with it is existing The different new tunnel VXLAN in the tunnel VXLAN), the specified tunnel VXLAN and different gateways are corresponding, and this refers to When determining the tunnel VXLAN and being used to indicate gateway and receive the first message from the specified tunnel VXLAN, response message is sent, I.e. instruction gateway sends the response message for being directed to the first message to VTEP equipment.Based on this, VTEP equipment can pass through finger Determine the tunnel VXLAN and transmit the first message to gateway, gateway is set by specifying the tunnel VXLAN to receive from VTEP After the first standby message, since the first message is by specifying VXLAN tunnel transmission, gateway is sent out to VTEP equipment Send the response message for the first message.

As shown in Fig. 2, in one example, in order to make sound of the gateway 1 to the transmission of VTEP equipment for the first message Message is answered, rather than the first message is sent to outer net equipment, then VTEP equipment can be by different from the tunnel VXLAN 1 new First message is sent to gateway 1 by the tunnel VXLAN (such as the specified tunnel VXLAN 10).Based on this, gateway 1 is passing through After the specified tunnel VXLAN 10 receives the first message, response report is sent since the specified tunnel VXLAN 10 is used to indicate gateway 1 Text, therefore gateway 1 sends the response message for being directed to the first message to VTEP equipment.In contrast to this, gateway 1 is logical It crosses after the tunnel VXLAN 1 receives the second message, to outer net device forwards second message.

Processing with gateway 1 similarly, in order to send gateway 2 to VTEP equipment is directed to the first message Response message, rather than the first message is sent to outer net equipment, then VTEP equipment can be by different from the tunnel VXLAN 1 First message is sent to gateway 2 by the new tunnel VXLAN (such as the specified tunnel VXLAN 11).Based on this, gateway 2 is logical It crosses after specifying the tunnel VXLAN 11 to receive the first message, sends response since the specified tunnel VXLAN 11 is used to indicate gateway 2 Message, therefore gateway 2 sends the response message for being directed to the first message to VTEP equipment.In contrast to this, gateway 2 After receiving the second message by the tunnel VXLAN 1, to the second message of outer net device forwards.

Under aforesaid way, the transmission channel of the first message has used the new VXLAN different from the existing tunnel VXLAN 1 The new tunnel VXLAN is known as the specified tunnel VXLAN by tunnel.Therefore, it is necessary to establish to refer between VTEP equipment and gateway Determine the tunnel VXLAN, and the specified tunnel VXLAN is used to indicate gateway and sends response message.In addition, different in order to distinguish Gateway, the specified tunnel VXLAN established for different gateways are different.In this way, VTEP equipment is receiving response report Wen Shi, so that it may distinguish gateway using the specified tunnel VXLAN for receiving the response message.

For example, VTEP equipment establishes the specified tunnel VXLAN 10 for gateway 1, established for gateway 2 specified The tunnel VXLAN 11.Moreover, gateway 1 can establish the reversed tunnel VXLAN in the specified tunnel VXLAN 10, such as specified VXLAN tunnel Road 10 ', gateway 2 can establish the reversed tunnel VXLAN in the specified tunnel VXLAN 11, such as specified tunnel VXLAN 11 '.Further , gateway 1 can safeguard that the mapping relations in the specified tunnel VXLAN 10 and the specified tunnel VXLAN 10 ', gateway 2 can be safeguarded The mapping relations in the specified tunnel VXLAN 11 and the specified tunnel VXLAN 11 '.

In this way, gateway 1 is after receiving the first message by the specified tunnel VXLAN 10, due to specifying the tunnel VXLAN 10, which are used to indicate gateway 1, sends response message, and therefore, gateway 1 is corresponding specified by the specified tunnel VXLAN 10 The tunnel VXLAN 10 ' sends the response message for being directed to the first message to VTEP equipment.VTEP equipment is by specifying the tunnel VXLAN After 10 ' receive response message, it can know that the response message is that the specified corresponding gateway 1 in the tunnel VXLAN 10 ' is sent 's.

Gateway 2 is after receiving the first message by the specified tunnel VXLAN 11, since the specified tunnel VXLAN 11 is used Response message is sent in instruction gateway 2, therefore, gateway 2 is by specifying the corresponding specified VXLAN in the tunnel VXLAN 11 Tunnel 11 ' sends the response message for being directed to the first message to VTEP equipment.VTEP equipment connects by the specified tunnel VXLAN 11 ' After receiving response message, it can know that the response message is that the specified corresponding gateway 2 in the tunnel VXLAN 11 ' is sent.

In one example, a kind of example for establishing the specified tunnel VXLAN is elaborated, specifically, can set in each gateway Standby upper configuration of IP subaddressing, and the IP subaddressing of each gateway is different.For example, configuration of IP subaddressing in gateway 1 3.3.3.3, configuration of IP subaddressing 4.4.4.4 in gateway 2.In order to establish the corresponding finger of gateway 1 in VTEP equipment Determine the tunnel VXLAN 10, the corresponding specified tunnel VXLAN 11 of gateway 2, configuration and IP subaddressing in VTEP equipment 3.3.3.3 the order in the tunnel VXLAN is established in the order for establishing the tunnel VXLAN with IP subaddressing 4.4.4.4.

Based on this, the specified tunnel VXLAN 10 can be established in VTEP equipment, the specified tunnel VXLAN 10 is corresponding VXLAN mark 2000, source address are the IP address 2.2.2.2 of VTEP equipment, and destination address is the IP subaddressing of gateway 1 3.3.3.3.Further, it is also possible to establish the specified tunnel VXLAN 11 in VTEP equipment, the specified tunnel VXLAN 11 is corresponding VXLAN mark 3000, source address are the IP address 2.2.2.2 of VTEP equipment, and destination address is the IP subaddressing of gateway 1 4.4.4.4.Further, it is also possible to establish the specified tunnel VXLAN 10 ' in gateway 1, the specified tunnel VXLAN 10 ' is corresponding VXLAN mark 2000, source address are the IP subaddressing 3.3.3.3 of gateway 1, and destination address is the IP address of VTEP equipment 2.2.2.2.Further, it is also possible to establish the specified tunnel VXLAN 11 ' in gateway 2, the specified tunnel VXLAN 11 ' is corresponding VXLAN mark 3000, source address are the IP subaddressing 4.4.4.4 of gateway 2, and destination address is the IP address of VTEP equipment 2.2.2.2。

In one example, can also have been established between VTEP equipment and gateway the specified tunnel VXLAN (with it is existing A different new tunnel VXLAN of the tunnel VXLAN), the specified tunnel VXLAN and different gateways are corresponding, moreover, first Default identification information is carried in message.Based on this, indicate that gateway is sent out by the specified tunnel VXLAN and default identification information Response message is sent, i.e. instruction gateway sends the response message for being directed to the first message to VTEP equipment.For example, gateway is only There is the first message for receiving from the specified tunnel VXLAN and carrying default identification information, just sends response message.For specified The related content in the tunnel VXLAN and default identification information, has been introduced above, and details are not described herein.

The gateway communicated with VTEP equipment is selected in the response message sent using gateway for step 302 During, VTEP equipment can use the response message of gateway transmission, determine the time delay of VTEP equipment and gateway Information;The gateway communicated with VTEP equipment is selected using Delay.

For the process for the Delay for determining VTEP equipment and gateway using response message:

In one example, VTEP equipment sends the timestamp of the first message in local record when sending the first message T1.VTEP equipment receives the time stamp T 4 of response message when receiving the response message for the first message, in local record. Later, using time stamp T 1 and time stamp T 4, the Delay of VTEP equipment and gateway is determined, as Delay can be Time stamp T 4- time stamp T 1.

In another example, for VTEP equipment when sending the first message, addition sends the first message in the first message Time stamp T 1.VTEP equipment receives response message when receiving the response message for the first message, in local record Time stamp T 4.Later, using time stamp T 1 and time stamp T 4, the Delay of VTEP equipment and gateway, such as time delay are determined Information can be time stamp T 4- time stamp T 1.

In another example, for VTEP equipment when sending the first message, addition sends the first message in the first message Time stamp T 1.For gateway when sending the response message for being directed to the first message, addition receives the first report in response message The time stamp T 2 of text, the time stamp T 3 for sending response message.VTEP equipment is received when receiving response message in local record The time stamp T 4 of response message.Later, using time stamp T 1, time stamp T 2, time stamp T 3 and time stamp T 4, VTEP equipment is determined It can be (time stamp T 4- time stamp T 1)-(time stamp T 3- time stamp T 3) with the Delay of gateway, such as Delay.

In certain practical application, it is not limited to the side of the Delay between above-mentioned detection VTEP equipment and gateway Formula, all modes for being able to detect that Delay, within that scope of the present invention.

In the embodiment of the present invention, after detecting the Delay between VTEP equipment and each gateway, VTEP is set It is standby the Delay between VTEP equipment and each gateway to be recorded in local storage medium (such as memory).Example Such as, the Delay between VTEP equipment and gateway 1 is time delay A, the Delay between VTEP equipment and gateway 2 For time delay B, and time delay A is less than time delay B.

For the process of the gateway communicated using Delay selection with VTEP equipment:

Based on the Delay between the VTEP equipment and each gateway recorded in local storage medium, VTEP equipment The smallest gateway of time delay be can choose as the gateway communicated with this VTEP equipment.For example, when being less than due to time delay A Prolong B, time delay A is the smallest time delay, and therefore, VTEP equipment can choose the corresponding gateway 1 of time delay A and set as with this VTEP The gateway of standby communication.

For step 303, which is sent to by VTEP equipment after receiving the second message from host The gateway of selection, so that the gateway of the selection is to outer net device forwards second message.For example, host 1 is sent to The process flow of the message 1 (i.e. the second message) of outer net equipment are as follows: VTEP equipment after receiving the message 1 from host 1, The message 1 is sent to the gateway (the smallest gateway 1 of such as time delay) of selection.In one example, VTEP equipment can The message 1 is sent to gateway 1 by the tunnel VXLAN 1, details are not described herein for specific sending method.Gateway 1 exists After receiving message 1 by the tunnel VXLAN 1, message 1 is sent to outer net equipment.

In the embodiment of the present invention, the gateway that the corresponding forwarding-table item of host can also be synchronized to selection by VTEP equipment is set It is standby, for example, forwarding-table item can be synchronized to the gateway of selection by VTEP equipment by BGP message.Based on this, VTEP equipment The outer net equipment that can receive the gateway transmission of the selection is sent to the message of host;Wherein, which is selection Gateway is sent using the forwarding-table item.

For example, VTEP equipment can also learn forwarding-table item (such as ARP forwarding table of each host (such as host 1) in this website ), and the ARP forwarding-table item learnt is synchronized to by the gateway 1 by BGP message.Wherein, the ARP forwarding-table item IP address is the IP address of host 1, and MAC Address is the MAC Address of VTEP equipment.Later, gateway 1 can be in local maintenance Corresponding MAC forwarding-table item, the IP address of the MAC forwarding-table item are the IP address of host 1, and MAC Address is the MAC of VTEP equipment Address, and exit port is the port for receiving the BGP message in gateway 1.

Based on this, outer net equipment is sent to the process flow of the message 2 (i.e. the response message of the second message) of host 1 are as follows: Outer net equipment sends the corresponding response message of message 1 after receiving the message 1 from gateway 1, to gateway 1, Such as message 2.Gateway 1 is after receiving message 2, and the purpose IP address (such as IP address of host 1) based on message 2 can To find above-mentioned MAC forwarding-table item, the target MAC (Media Access Control) address of message 2 is revised as to the MAC Address of VTEP equipment, and be based on MAC Message 2 is sent to VTEP equipment by the tunnel VXLAN 2 by the exit port of forwarding-table item.VTEP equipment is passing through the tunnel VXLAN 2 After receiving message 2, message 2 is sent to host 1.

Based on the above-mentioned technical proposal, in the embodiment of the present invention, it can use the response message that each gateway is sent, selection The gateway communicated with this VTEP equipment, so as to select the smallest gateway of Delay as with this VTEP equipment The gateway of communication.When the second message is sent to the gateway, it is ensured that the propagation delay time of the second message is minimum, It avoids the second message to be transmitted on congestion path as far as possible, and can reduce and the case where traffic congestion occur, improve user's Business usage experience.

The above process of the embodiment of the present invention, which can be, periodically to carry out, i.e. the utilization time delay letter of VTEP device periodically Breath selects the gateway communicated with this VTEP equipment.If the smallest gateway of time delay does not change, VTEP equipment Continue to send the second message to the gateway selected before, if the smallest gateway of time delay changes, VTEP is set The standby gateway to after variation sends the second message, and again to the corresponding forwarding table of gateway master synchronization after variation , and so on.

Therefore, the second message is always sent to the smallest gateway of propagation delay time by VTEP equipment, moreover, propagation delay time The smallest gateway is also the gateway of relative free, busier so as to avoid the occurrence of some gateways, and The more idle problem of some gateways, the load of balanced each gateway.

In the embodiment of the present invention, forwarding-table item is synchronized to the gateway of selection for VTEP equipment by BGP message Process, VTEP equipment can also add the corresponding bandwidth value of host in BGP message, for example, adding bandwidth in BGP message Extended community attribute, and the corresponding bandwidth value of host is carried by the bandwidth expansion group attribute.Based on this, which can With from being parsed in BGP message bandwidth value (such as parsing bandwidth value from bandwidth expansion group attribute), and for host is reserved should The bandwidth of bandwidth value.

For example, when in some period, it, can be in VTEP equipment if host 1 has special service bandwidth requirement Corresponding bandwidth requirement, for example the bandwidth value 100M of the configuration of host 1 needs are configured for the host 1.Based on this, VTEP equipment is logical When crossing synchronous to gateway 1 forwarding-table item of BGP message, bandwidth expansion group attribute can be added in BGP message, and pass through The bandwidth expansion group attribute carries the corresponding bandwidth value 100M of host.Gateway 1 is after receiving BGP message, Ke Yicong Bandwidth value is parsed in the bandwidth expansion group attribute of BGP message, and is the band that host 1 reserves 100M by traffic engineering method It is wide.

In practical applications, VTEP equipment can also be in NLRI (the Network Layer of the BGP message Reachability Information, Network Layer Reachable Information) the corresponding VSI (Virtual of host 1 is carried in field Switching Instance, virtual switch instance) virtual interface IP address (such as 111.1.1.2), with indicate the BGP message use 100M bandwidth is reserved in the corresponding host 1 of IP address for the virtual interface.

It based on the above-mentioned technical proposal,, can be reserved for responsible consumer by using traffic engineering method in EVPN networking The bandwidth of gateway is preferably user service to meet the needs of responsible consumer.

In another example, as shown in figure 4, the transmission method of the message proposed in the embodiment of the present invention, can apply In gateway in stateless gateway networking, and this method may comprise steps of:

Step 401, the first message from VTEP equipment is received.

Step 402, the response message for being directed to the first message is sent to VTEP equipment, so that VTEP equipment utilization gateway The response message of transmission selects the gateway communicated with VTEP equipment.

In one example, default identification information can be carried in above-mentioned first message, and the default identification information is used for Indicate that this gateway sends response message.Based on this, gateway sends the response report for being directed to the first message to VTEP equipment The process of text, can specifically include but be not limited to: gateway after parsing default identification information in first message, to VTEP equipment sends response message;Wherein, the default identification information, and the default mark letter can also be carried in the response message Breath is also used to identify this gateway.

In another example, the specified tunnel VXLAN has been also set up between VTEP equipment and this gateway, this is specified The tunnel VXLAN and different gateways are corresponding, and the specified tunnel VXLAN is for making gateway from the specified VXLAN When tunnel receives the first message, response message is sent.Based on this, gateway is sent to VTEP equipment for the first message The process of response message can specifically include but be not limited to: gateway is receiving the first message by the specified tunnel VXLAN When, then response message can be sent to VTEP equipment.

Based on the above-mentioned technical proposal, in the embodiment of the present invention, it can use the response message that each gateway is sent, selection The gateway communicated with this VTEP equipment, so as to select the smallest gateway of Delay as with this VTEP equipment The gateway of communication.When the second message is sent to the gateway, it is ensured that the propagation delay time of the second message is minimum, It avoids the second message to be transmitted on congestion path as far as possible, and can reduce and the case where traffic congestion occur, improve user's Business usage experience.

Based on inventive concept same as the above method, a kind of transmission dress of message is additionally provided in the embodiment of the present invention It sets, applies in the VTEP equipment in stateless gateway networking.The transmitting device of the message can be by software realization, can also be with It is realized by way of hardware or software and hardware combining.It taking software implementation as an example, is logical as the device on a logical meaning The processor of the VTEP equipment where it is crossed, corresponding computer program instructions are formed in reading non-volatile storage.From For hardware view, as shown in figure 5, for a kind of hardware knot of the VTEP equipment where the transmitting device of message proposed by the present invention Composition, other than processor shown in fig. 5, nonvolatile memory, VTEP equipment can also include other hardware, such as be responsible for place Manage forwarding chip, network interface, the memory etc. of message;From hardware configuration, which is also possible to be that distribution is set It is standby, it may include multiple interface cards, to carry out the extension of Message processing in hardware view.

As shown in fig. 6, the structure chart of the transmitting device for message proposed by the present invention, described device include:

First sending module 11, for sending the first message to gateway, so that the gateway, which is sent, is directed to institute State the response message of the first message;Selecting module 12, the response message for being sent using gateway, selection and VTEP equipment The gateway of communication;Second sending module 13 is sent for receiving the second message from host, and by second message To the gateway of selection.

In one example, the selecting module 12, specifically in the response message sent using gateway, selection During the gateway communicated with VTEP equipment, the response message sent using gateway determines the VTEP equipment With the Delay of the gateway;Using the Delay, the gateway communicated with the VTEP equipment is selected.

In one example, default identification information is carried in first message that first sending module 11 is sent, The default identification information is used to indicate gateway and sends response message;The default mark is also carried in the response message Information, the default identification information are also used to identify the gateway.

In one example, the transmitting device of the message further includes (not embodying in figure):

Module 14 is established, specifies expansible local area network VXLAN for establishing between the VTEP equipment and gateway Tunnel, the specified tunnel VXLAN and different gateways are corresponding, the specified tunnel VXLAN for make gateway from When the specified tunnel VXLAN receives the first message, response message is sent;

First sending module 11, for passing through the first message described in the specified VXLAN tunnel transmission.

Based on inventive concept same as the above method, a kind of transmission dress of message is additionally provided in the embodiment of the present invention It sets, applies in the gateway in stateless gateway networking.The transmitting device of the message can be by software realization, can also be with It is realized by way of hardware or software and hardware combining.It taking software implementation as an example, is logical as the device on a logical meaning The processor of the gateway where it is crossed, corresponding computer program instructions are formed in reading non-volatile storage.From For hardware view, as shown in fig. 7, for a kind of hardware knot of the gateway where the transmitting device of message proposed by the present invention Composition, other than processor shown in Fig. 7, nonvolatile memory, gateway can also include other hardware, such as be responsible for place Manage forwarding chip, network interface, the memory etc. of message;From hardware configuration, which is also possible to be that distribution is set It is standby, it may include multiple interface cards, to carry out the extension of Message processing in hardware view.

As shown in figure 8, the structure chart of the transmitting device for message proposed by the present invention, described device include:

Receiving module 21, for receiving the first message from expansible local area network endpoint of a tunnel VTEP equipment;

Sending module 22, for sending the response message for being directed to first message to VTEP equipment, so that VTEP equipment The response message sent using gateway selects the gateway communicated with VTEP equipment.

Default identification information is carried in first message, the default identification information, which is used to indicate gateway and sends, to be rung Answer message;The sending module 22, specifically for sending the response message for being directed to first message to the VTEP equipment During, after parsing the default identification information in first message, Xiang Suoshu VTEP equipment sends the sound Answer message;Wherein, the default identification information is also carried in the response message, the default identification information is also used to identify institute State gateway.

It is established between the VTEP equipment and gateway and specifies the tunnel expansible local area network VXLAN, it is described specified The tunnel VXLAN and different gateways are corresponding, and the specified tunnel VXLAN is for making gateway from the specified VXLAN When tunnel receives the first message, response message is sent;The sending module 22 is specifically used for sending to the VTEP equipment For first message response message during, first message is being received by the specified tunnel VXLAN When, Xiang Suoshu VTEP equipment sends the response message.

Through the above description of the embodiments, those skilled in the art can be understood that the present invention can be by Software adds the mode of required general hardware platform to realize, naturally it is also possible to which by hardware, but in many cases, the former is more Good embodiment.Based on this understanding, technical solution of the present invention substantially in other words contributes to the prior art Part can be embodied in the form of software products, which is stored in a storage medium, if including Dry instruction is used so that a computer equipment (can be personal computer, server or the network equipment etc.) executes this hair Method described in bright each embodiment.It will be appreciated by those skilled in the art that attached drawing is the schematic diagram of a preferred embodiment, Module or process in attached drawing are not necessarily implemented necessary to the present invention.

It will be appreciated by those skilled in the art that the module in device in embodiment can describe be divided according to embodiment It is distributed in the device of embodiment, corresponding change can also be carried out and be located in one or more devices different from the present embodiment.On The module for stating embodiment can be merged into a module, can also be further split into multiple submodule.The embodiments of the present invention Serial number is for illustration only, does not represent the advantages or disadvantages of the embodiments.

Disclosed above is only several specific embodiments of the invention, and still, the present invention is not limited to this, any ability What the technical staff in domain can think variation should all fall into protection scope of the present invention.

Claims (12)

1. a kind of transmission method of message, which is characterized in that applied to the expansible local area network tunnel in stateless gateway networking In endpoint VTEP equipment, it the described method comprises the following steps:
The first message is sent to gateway, so that the gateway sends the response message for being directed to first message;
The response message sent using gateway selects the gateway communicated with VTEP equipment;Wherein, described to utilize gateway The response message that equipment is sent selects the process of the gateway communicated with VTEP equipment, specifically includes: being sent out using gateway The response message sent determines the Delay of the VTEP equipment and the gateway;Using the Delay, when selection Prolong the smallest gateway as the gateway communicated with the VTEP equipment;
The second message from host is received, and second message is sent to the gateway of selection.
2. identification information is preset the method according to claim 1, wherein carrying in first message, it is described Default identification information is used to indicate gateway and sends response message;The default mark letter is also carried in the response message Breath, the default identification information are also used to identify the gateway.
3. the method according to claim 1, wherein establishing between the VTEP equipment and gateway has finger The fixed tunnel expansible local area network VXLAN, the specified tunnel VXLAN and different gateways are corresponding, the specified VXLAN tunnel Road is for sending response message when gateway being made to receive the first message from the specified tunnel VXLAN;
Wherein, pass through the first message described in the specified VXLAN tunnel transmission.
4. a kind of transmission method of message, which is characterized in that applied in the gateway in stateless gateway networking, the side Method the following steps are included:
Receive the first message from expansible local area network endpoint of a tunnel VTEP equipment;
The response message for being directed to first message is sent to the VTEP equipment, so that the VTEP equipment utilization gateway The response message of transmission selects the gateway communicated with VTEP equipment;Wherein, the VTEP equipment utilization gateway is sent Response message, select the process of gateway communicated with VTEP equipment, specifically include: the VTEP equipment utilization gateway is set The response message that preparation is sent determines the Delay of the VTEP equipment and the gateway;Utilize the Delay, choosing The smallest gateway of time delay is selected as the gateway communicated with the VTEP equipment.
5. described according to the method described in claim 4, it is characterized in that, carry default identification information in first message Default identification information is used to indicate gateway and sends response message;
The response message for being directed to first message is sent to the VTEP equipment, is specifically included:
After parsing the default identification information in first message, Xiang Suoshu VTEP equipment sends the response report Text;Wherein, the default identification information is also carried in the response message, the default identification information is also used to identify the net Close equipment.
6. according to the method described in claim 4, it is characterized in that, establishing between the VTEP equipment and gateway has finger The fixed tunnel expansible local area network VXLAN, the specified tunnel VXLAN and different gateways are corresponding, the specified VXLAN tunnel Road is for sending response message when gateway being made to receive the first message from the specified tunnel VXLAN;
The response message for being directed to first message is sent to the VTEP equipment, is specifically included:
When receiving first message by the specified tunnel VXLAN, Xiang Suoshu VTEP equipment sends the response report Text.
7. a kind of transmitting device of message, which is characterized in that applied to the expansible local area network tunnel in stateless gateway networking In endpoint VTEP equipment, described device is specifically included:
First sending module, for sending the first message to gateway, so that the gateway, which is sent, is directed to described first The response message of message;
Selecting module, the response message for being sent using gateway, selects the gateway communicated with VTEP equipment;It is described Selecting module, specifically for selecting the gateway communicated with VTEP equipment in the response message sent using gateway In the process, the response message sent using gateway, determines the Delay of the VTEP equipment and the gateway;Benefit With the Delay, select the smallest gateway of time delay as the gateway communicated with the VTEP equipment;
Second message for receiving the second message from host, and is sent to the gateway of selection by the second sending module Equipment.
8. device according to claim 7, which is characterized in that
Default identification information is carried in first message that first sending module is sent, the default identification information is used for Indicate that gateway sends response message;The default identification information, the default mark letter are also carried in the response message Breath is also used to identify the gateway.
9. device according to claim 7, which is characterized in that further include:
Module is established, specifies the tunnel expansible local area network VXLAN, institute for establishing between the VTEP equipment and gateway It states the specified tunnel VXLAN and different gateways is corresponding, the specified tunnel VXLAN is for specifying gateway from described When the tunnel VXLAN receives the first message, response message is sent;
First sending module, for passing through the first message described in the specified VXLAN tunnel transmission.
10. a kind of transmitting device of message, which is characterized in that described applied in the gateway in stateless gateway networking Device specifically includes:
Receiving module, for receiving the first message from expansible local area network endpoint of a tunnel VTEP equipment;
Sending module, for sending the response message for being directed to first message to VTEP equipment, so that VTEP equipment utilization net The response message that equipment is sent is closed, the gateway communicated with VTEP equipment is selected;Wherein, VTEP equipment utilization gateway is sent out The response message sent selects the gateway communicated with VTEP equipment, comprising: what the VTEP equipment utilization gateway was sent Response message determines the Delay of the VTEP equipment and the gateway;Using the Delay, time delay is selected most Small gateway is as the gateway communicated with the VTEP equipment.
11. device according to claim 10, which is characterized in that carry default identification information, institute in first message It states default identification information and is used to indicate gateway transmission response message;
The sending module, specifically in the process for sending the response message for first message to the VTEP equipment In, after parsing the default identification information in first message, Xiang Suoshu VTEP equipment sends the response message; Wherein, the default identification information is also carried in the response message, the default identification information is also used to identify the gateway Equipment.
12. device according to claim 10, which is characterized in that establishing between the VTEP equipment and gateway has The tunnel expansible local area network VXLAN is specified, the specified tunnel VXLAN and different gateways are corresponding, the specified VXLAN Tunnel is for sending response message when gateway being made to receive the first message from the specified tunnel VXLAN;
The sending module, specifically in the process for sending the response message for first message to the VTEP equipment In, when receiving first message by the specified tunnel VXLAN, Xiang Suoshu VTEP equipment sends the response report Text.
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