CN108718278A

CN108718278A - A kind of message transmitting method and device

Info

Publication number: CN108718278A
Application number: CN201810329141.6A
Authority: CN
Inventors: 雷磊; 黄李伟
Original assignee: New H3C Technologies Co Ltd
Current assignee: New H3C Technologies Co Ltd
Priority date: 2018-04-13
Filing date: 2018-04-13
Publication date: 2018-10-30
Anticipated expiration: 2038-04-13
Also published as: CN108718278B

Abstract

A kind of message transmitting method of the application offer and device, this method include：Forwarding table is inquired by the destination address of the data message received, obtains corresponding outgoing interface；If the outgoing interface is the first tunnel, by the destination address table of query and routing in first tunnel, corresponding at least two routing is obtained；Wherein, the source address in first tunnel is the group address of the first equipment group, and the destination address in first tunnel is the group address of the second equipment group；Selection one is route from least two routing, and the data message is sent to corresponding 2nd ED of routing of selection, so that the data message is sent to destination host by the 2nd ED.By the technical solution of the application, the load balancing of flow can be realized at least two ED, realizes flow equalization, mitigates the processing pressure of each ED, improves the reliability of ED processing.

Description

A kind of message transmitting method and device

Technical field

This application involves fields of communication technology, more particularly, to a kind of message transmitting method and device.

Background technology

EVPN (Ethernet Virtual Private Network, Ethernet Virtual Private Network) is two layers a kind of VPN (Virtual Private Network, Virtual Private Network) technology, control plane use MP-BGP (Multi Protocol-Border Gateway Protocol, Multiprotocol Border Gateway Protocol) notice routing iinformation, data plane use VXLAN (Virtual eXtensible Local Area Network, expansible Virtual Local Area Network) packaged type forwarding report Text.Wherein, VXLAN is a kind of IP based network, using " MAC (Media Access Control, media access control) in The two-layer VPN technology of UDP (User Datagram Protocol, User Datagram Protocol) " packing forms, VXLAN can be with base In existing service provider or enterprise IP network, two layers of interconnection are provided for the website of dispersion, and can be different tenants The isolation of offer business.

It may include multiple data centers in EVPN networks, and ED (Edge can be passed through between different data centers Device, the i.e. edge device of data center) it is interconnected.For example, the ED1 of data center 1 is connect with the ED2 of data center 2, In this way, all messages of data center 1, are required to be sent to ED2 by ED1, each equipment of data center 2 is sent to by ED2, Similarly, all messages of data center 2, are required to be sent to ED1 by ED2, and each equipment of data center 1 is sent to by ED1.

In the above method, all messages of data center are required to the ED processing by the data center, the processing pressure of ED Power is larger, once ED breaks down, then can directly result in can not interconnect between data center.

Invention content

The application provides a kind of message transmitting method, includes at least two first in the first equipment group of the first data center Edge device ED, the method are applied to arbitrary first ED, the method includes：

Forwarding table is inquired by the destination address of the data message received, obtains corresponding outgoing interface；

If the outgoing interface is the first tunnel, by the destination address table of query and routing in first tunnel, corresponded to At least two routings；Wherein, include extremely in the second equipment group of the second data center being connect with first data center Few two the 2nd ED, the source address in first tunnel is the group address of first equipment group, the purpose in first tunnel Address is the group address of second equipment group；

Selection one is route from least two routing, and the data message is sent to the routing correspondence of selection The 2nd ED so that the data message is sent to destination host by the 2nd ED；Wherein, at least two routing The 2nd ED in each corresponding second equipment group of routing.

The application provides a kind of message transmitting device, includes at least two first in the first equipment group of the first data center Edge device ED, described device are applied to arbitrary first ED, and described device includes：

Module is obtained, the destination address for the data message by receiving inquires forwarding table, obtains corresponding going out to connect Mouthful；If the outgoing interface is the first tunnel, by the destination address table of query and routing in first tunnel, obtain it is corresponding at least Two routings；Wherein, include at least two in the second equipment group of the second data center being connect with first data center 2nd ED, the source address in first tunnel are the group address of first equipment group, and the destination address in first tunnel is The group address of second equipment group；

Selecting module, for one routing of selection from least two routing；

Sending module, corresponding 2nd ED of routing for the data message to be sent to the selecting module selection, So that the data message is sent to destination host by the 2nd ED；Wherein, each routing at least two routing The 2nd ED in corresponding second equipment group.

Based on the above-mentioned technical proposal, in the embodiment of the present application, by including setting at least two ED in data center configuration Standby group, and at least two ED use identical group of IP address, in this way, the destination address inquiry by the data message received turns When delivering, obtained outgoing interface is the first tunnel, and the destination address in the first tunnel corresponds at least two routings, therefore, can be with One routing of selection realizes flow equalization to realize the load balancing of flow at least two ED from least two routings, Mitigate the processing pressure of each ED.When an ED breaks down, service can also be provided by other ED, what raising ED was handled can By property.

Description of the drawings

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

Fig. 1 is the application scenarios schematic diagram in a kind of embodiment of the application；

Fig. 2 is the flow chart of the message transmitting method in a kind of embodiment of the application；

Fig. 3 is the structure chart of the message transmitting device in a kind of embodiment of the application；

Fig. 4 is the hardware structure diagram of the edge device in a kind of embodiment of the application.

Specific implementation mode

In term used in this application merely for the sake of the purpose of description specific embodiment, and unrestricted the application.Moreover, The "an" of singulative used in the application 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 refer to comprising one or Multiple associated list items purposes any or all may combine.

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

The embodiment of the present application proposes a kind of message transmitting method, can be applied to EVPN networks, every number of EVPN networks May include equipment group according to center, and the equipment group may include at least two ED, can pass through between different data centers ED is interconnected.It is shown in Figure 1, it is the application scenarios schematic diagram of the embodiment of the present application, in the equipment group 110 of data center 11 It is interior, may include ED111 and ED112 may include ED121 and ED122 in the equipment group 120 of data center 12.Certainly, It is to be illustrated by taking two ED as an example in Fig. 1, in practical applications, the quantity of ED can also be more, without limitation.

Shown in Figure 1, ED111 is connect with each ED in equipment group 120, and establishes bgp neighbor.For example, ED111 with ED121 connections, establish bgp neighbor between ED111 and ED121；ED111 is connect with ED122, is built between ED111 and ED122 Vertical bgp neighbor；Similarly, ED112 is connect with each ED in equipment group 120, and establishes bgp neighbor.For example, ED112 and ED121 Connection, establishes bgp neighbor between ED112 and ED121；ED112 is connect with ED122, and BGP is established between ED112 and ED122 Neighbours.Wherein, the IP address of ED111 is 2.2.2.10, and the IP address of ED112 is 2.2.2.11, and the IP address of ED121 is 3.3.3.10 the IP address of ED122 is 3.3.3.11.

Data center 11 can also include VTEP113 (VXLAN Tunnel End Point, VXLAN endpoint of a tunnel) and Host 114 (such as virtual machine).VTEP113 is connect with host 114；VTEP113 is connect with ED111, in VTEP113 and ED111 Between establish bgp neighbor；VTEP113 is connect with ED112, and bgp neighbor is established between VTEP113 and ED112.Wherein, The IP address of VTEP113 is 1.1.1.1, and the IP address of host 114 is 11.1.1.2, and the MAC Address of host 114 is A-A-A.

Can also include VTEP123 and host 124 in data center 12.VTEP123 is connect with host 124；VTEP123 with ED121 connections, establish bgp neighbor between VTEP123 and ED121；VTEP123 is connect with ED122, in VTEP123 and ED122 Between establish bgp neighbor.Wherein, the IP address of VTEP123 is 4.4.4.4, and the IP address of host 124 is 10.1.1.2, MAC Location is B-B-B.

Can also be that equipment group 110 configures a group IP address, such as 2.2.2.2, as ED111 in the embodiment of the present application With ED112 configure identical group of IP address 2.2.2.2, and for equipment group 120 configure a group IP address, such as 3.3.3.3, as ED121 and ED122 configures identical group of IP address 3.3.3.3.

The tunnels VXLAN A1 can be established on VTEP113, the source IP address of the tunnels VXLAN A1 is the IP of VTEP113 Location 1.1.1.1, purpose IP address are the group IP address 2.2.2.2 of equipment group 110.Wherein, the tunnels VXLAN A1 is VTEP113 The tunnels VXLAN between the tunnels VXLAN and VTEP113 and ED112 between ED111.That is, VTEP113 can be with Message is sent to ED111 by the tunnels VXLAN A1, also message can be sent to ED112 by the tunnels VXLAN A1.

VXLAN corresponding with the tunnels VXLAN A1 tunnel A2, the source IP address of the tunnels VXLAN A2 can also be established in ED111 For the group IP address 2.2.2.2 of equipment group 110, purpose IP address, which is the IP address 1.1.1.1, ED111 of VTEP113, to be passed through Message is sent to VTEP113 by the tunnels VXLAN A2.VXLAN corresponding with the tunnels VXLAN A1 tunnel A2 can be established in ED112, The source IP address of the tunnels VXLAN A2 is the group IP address 2.2.2.2 of equipment group 110, and purpose IP address is the IP address of VTEP113 1.1.1.1, message can be sent to VTEP113 by ED112 by the tunnels VXLAN A2.

Wherein, the IP address 1.1.1.1 based on VTEP113 and group IP address 2.2.2.2, can establish on VTEP113 The tunnels VXLAN A1 such as may be used static mode and establish the tunnels VXLAN A1, can also establish the tunnels VXLAN using dynamical fashion A1 establishes mode to this tunnel VXLAN A1 and is not limited.For example, user is in VTEP113 manual configuration VXLAN tunnel A1, or Person is established automatically based on ENDP (Enhanced Neighbor Discovery Protocol, the Neighbor Discovery Protocol of enhancing) The tunnels VXLAN A1.

Similarly, the IP address 1.1.1.1 based on VTEP113 and group IP address 2.2.2.2, can build in ED111 and ED112 VXLAN corresponding with the tunnels VXLAN A1 tunnel A2 are found, static mode such as may be used and establish the tunnels VXLAN A2, can also use Dynamical fashion establishes the tunnels VXLAN A2.

The tunnels VXLAN B1 can be established on ED111, the source IP address of the tunnels VXLAN B1 is group IP address 2.2.2.2, purpose IP address is the group IP address 3.3.3.3 of equipment group 120.The tunnels VXLAN B1 is between ED111 and ED121 The tunnels VXLAN and ED111 and ED122 between the tunnels VXLAN.That is, ED111 can pass through the tunnels VXLAN B1 Message is sent to ED121, message can also be sent to ED122 by the tunnels VXLAN B1.VXLAN tunnels are established on ED112 Road B1, VXLAN tunnel B1 are the VXLAN tunnels between the tunnels VXLAN and ED112 and ED122 between ED112 and ED121 Road.That is, message can be sent to ED121 by ED112 by the tunnels VXLAN B1, can also be incited somebody to action by the tunnels VXLAN B1 Message is sent to ED122.

Further, it is also possible to establish VXLAN corresponding with the tunnels VXLAN B1 tunnel B2, the tunnels VXLAN B2 on ED121 Source IP address be a group IP address 3.3.3.3, purpose IP address is a group IP address 2.2.2.2.The tunnels VXLAN B2 be ED121 with The tunnels VXLAN between the tunnels VXLAN and ED121 and ED112 between ED111.That is, ED121 can pass through Message is sent to ED111 by the tunnels VXLAN B2, message can also be sent to ED112 by the tunnels VXLAN B2.

Further, VXLAN corresponding with the tunnels VXLAN B1 tunnel B2, the tunnels VXLAN can also be established on ED122 B2 is the tunnels VXLAN between the tunnels VXLAN and ED122 and ED112 between ED122 and ED111.That is, Message can be sent to ED111 by ED122 by the tunnels VXLAN B2, can also be sent to message by the tunnels VXLAN B2 ED112。

Wherein, it is based on group IP address 3.3.3.3 and group IP address 2.2.2.2, can be established on ED111 and ED112 The tunnels VXLAN B1 such as may be used static mode and establish the tunnels VXLAN B1, can also establish the tunnels VXLAN using dynamical fashion B1 establishes mode to this tunnel VXLAN B1 and is not limited.For example, user is in the tunnels ED111 and ED112 manual configuration VXLAN B1, alternatively, establishing the tunnels VXLAN B1 automatically based on ENDP.Similarly, group IP address 3.3.3.3 and group IP address are based on 2.2.2.2, the tunnels VXLAN B2 can be established on ED121 and ED122, and static mode such as may be used and establish the tunnels VXLAN B2 can also establish the tunnels VXLAN B2 using dynamical fashion, without limitation.

In above process, the tunnel B1 and VXLAN B2 in the tunnels VXLAN can be DCI (Data Center Interconnection is interconnected between data center) tunnels VXLAN (being properly termed as the tunnels VXLAN-DCI) of type, certainly, The tunnels VXLAN that can be other types, it is without limitation.

The tunnels VXLAN C1 can be established on VTEP123, the source IP address of the tunnels VXLAN C1 is the IP of VTEP123 Location 4.4.4.4, purpose IP address are group IP address 3.3.3.3；The tunnels VXLAN C1 is between VTEP123 and ED121 The tunnels VXLAN between the tunnels VXLAN and VTEP123 and ED122.That is, VTEP123 can pass through the tunnels VXLAN Message is sent to ED121 by C1, also message can be sent to ED122 by the tunnels VXLAN C1.Further, it is also possible on ED121 Establish VXLAN corresponding with the tunnels VXLAN C1 tunnel C2, the source IP address of the tunnels VXLAN C2 is 3.3.3.3, destination IP Location is 4.4.4.4.Message can be sent to VTEP123 by ED121 by the tunnels VXLAN C2.Can ED122 establish with Message can be sent to VTEP123 by the tunnels VXLAN the C1 corresponding tunnels VXLAN C2, ED122 by the tunnels VXLAN C2.

Wherein, for the foundation of the tunnels the VXLAN tunnel C1, VXLAN C2, static mode may be used and establish the tunnels VXLAN, The tunnels VXLAN can also be established using dynamical fashion, it is without limitation.

Since VTEP113 and ED111 establish bgp neighbor, ED111 can be issued to VTEP113 for group IP address 2.2.2.2 the next hop address of BGP routings, BGP routings is the IP address 2.2.2.10 of ED111, and VTEP113 is by connecing After mouth 1131 receives BGP routings, BGP routings can be learnt in the routing table, ginseng is shown in Table 1.Similarly, VTEP113 The BGP routings of ED112 publications can be acquired in the routing table, and ginseng is shown in Table 1.As it can be seen from table 1 group IP address 2.2.2.2 two BGP routings are corresponded to, the two BGP route to form a group equivalent route of IP address 2.2.2.2.

Table 1

Purpose IP address	Next hop address	Outgoing interface
			2.2.2.2	2.2.2.10	1131
2.2.2.2	2.2.2.11	1132

In above process, it is to be route to VTEP113 publications BGP with ED111, ED112 is route to VTEP113 publications BGP For, can also include Router Reflector (RR), not depending on going out Router Reflector in Fig. 1, in this way, ED111 in practical applications BGP can be route and be sent to Router Reflector, BGP routings are sent to VTEP113 by Router Reflector so that VTEP113 Learn BGP routings in the routing table.Similarly, BGP can route and be sent to Router Reflector by ED112, by Router Reflector BGP routings are sent to VTEP113 so that VTEP113 learns BGP routings in the routing table.

Since ED111 and ED121 establish bgp neighbor, ED121 can be issued to ED111 for group IP address 3.3.3.3 BGP routings, the IP address 3.3.3.10, ED111 that the next hop address of BGP routings is ED121 are passing through interface After 1111 receive BGP routings, it can learn to the BGP to route in the routing table, ginseng is shown in Table 2.Similarly, ED111 is also It can learn the BGP routings issued to ED122 in the routing table, ginseng is shown in Table 2.From table 2 it can be seen that group IP address 3.3.3.3 two BGP routings are corresponded to, the two BGP routings can form a group equivalent route of IP address 3.3.3.3.

Table 2

Purpose IP address	Next hop address	Outgoing interface
			3.3.3.3	3.3.3.10	1111
3.3.3.3	3.3.3.11	1112

Similarly, the routing table of ED112 may refer to shown in table 3, and the routing table of ED121 may refer to shown in table 4, ED122 Routing table may refer to shown in table 5, the routing table of VTEP123 may refer to shown in table 6.Certainly, above-mentioned each routing table is One example is not limited the content of this routing table.

Table 3

Purpose IP address	Next hop address	Outgoing interface
			3.3.3.3	3.3.3.10	1121
3.3.3.3	3.3.3.11	1122

Table 4

Purpose IP address	Next hop address	Outgoing interface
			2.2.2.2	2.2.2.10	1211
2.2.2.2	2.2.2.11	1212

Table 5

Purpose IP address	Next hop address	Outgoing interface
			2.2.2.2	2.2.2.10	1221
2.2.2.2	2.2.2.11	1222

Table 6

Purpose IP address	Next hop address	Outgoing interface
			3.3.3.3	3.3.3.10	1231
3.3.3.3	3.3.3.11	1232

In above process, be with ED121 to ED111 either ED112 issue BGP routings and ED122 to ED111 or For ED112 issues BGP routings, in practical applications, BGP can route and be sent to route reflection by ED121 or ED122 BGP routings are sent to ED111 or ED112 so that ED111 or ED112 learn in the routing table by device by Router Reflector The BGP is route.BGP can route and be sent to Router Reflector by ED111 or ED112, route BGP by Router Reflector and send out Give ED121 or ED122 so that ED121 or ED122 learns BGP routings in the routing table.

Under above application scene, the embodiment of the present application can also relate to forwarding-table item (for example, MAC address entries, ARP entry, It is route table items etc., without limitation) learning process and message transmission procedure, below in conjunction with above application scene, to forwarding table Item learning process and message transmission procedure are described in detail.

To be illustrated for learning the forwarding-table item of host 124, then：Host 124 can be sent free after reaching the standard grade ARP (Address Resolution Protocol, address resolution protocol) message, the gratuitous ARP message carry host 124 IP address 10.1.1.2 and MAC Address B-B-B；After VTEP123 receives gratuitous ARP message by interface 1233, locally turning Middle addition forwarding-table item is delivered, ginseng is shown in Table 7.

Table 7

IP address	MAC Address	Outgoing interface
			10.1.1.2	B-B-B	1233

VTEP123 can send synchronization message (such as BGP synchronization messages) to ED121, which can carry host 124 IP address 10.1.1.2, next hop address are the IP address 4.4.4.4 of VTEP123；In practical applications, synchronization message The MAC Address B-B-B that host 124 can also be carried, can not also carry MAC Address B-B-B, subsequently not carry MAC Address It is illustrated for B-B-B.ED121 can add forwarding-table item after receiving synchronization message in local forwarding table, referring to Shown in table 8；In table 8, since next hop address 4.4.4.4 is the purpose IP address of the tunnels VXLAN C2, outgoing interface is The tunnels VXLAN C2.Similar, VTEP123 can also send synchronization message to ED122, ED122 after receiving synchronization message, Also forwarding-table item is added in local forwarding table, ginseng is shown in Table 8.

Table 8

IP address	Outgoing interface
		10.1.1.2	The tunnels VXLAN C2

ED121 can send synchronization message to ED111, which can carry the IP address of host 124 10.1.1.2 and next hop address, next hop address is a group IP address 3.3.3.3, rather than the IP address 3.3.3.10 of ED121； ED122 can also send synchronization message to ED111, and the next hop address which carries is also a group IP address 3.3.3.3, Rather than the IP address 3.3.3.11 of ED122；ED111 can add after receiving any synchronization message in local forwarding table Forwarding-table item, ginseng is added to be shown in Table 9；In table 9, since next hop address 3.3.3.3 is the destination IP of the tunnels VXLAN B1 Location, therefore, outgoing interface are the tunnels VXLAN B1.Similar, ED121 and ED122 can also send synchronization message to ED112, After ED112 receives any synchronization message, forwarding-table item is added in local forwarding table, ginseng is shown in Table 9.

Table 9

IP address	Outgoing interface
		10.1.1.2	The tunnels VXLAN B1

ED111 can send synchronization message to VTEP113, which can carry the IP address of host 124 10.1.1.2 and next hop address, and next hop address is a group IP address 2.2.2.2, rather than the IP address of ED111 2.2.2.10；ED112 also to VTEP113 send synchronization message, the synchronization message carry host 124 IP address 10.1.1.2 and Next hop address, and next hop address is also a group IP address 2.2.2.2, rather than the IP address 2.2.2.11 of ED112； VTEP113 can add forwarding-table item after receiving any synchronization message in local forwarding table, and ginseng is shown in Table 10；? In table 10, since next hop address 2.2.2.2 is the purpose IP address of the tunnels VXLAN A1, outgoing interface is the tunnels VXLAN A1。

Table 10

IP address	Outgoing interface
		10.1.1.2	The tunnels VXLAN A1

So far, the learning process of the forwarding-table item of host 124 can be completed, it is then possible to realize report based on forwarding-table item Literary transmission process.Specifically, in message transmission procedure, based on forwarding-table item shown in table 7- tables 10, then host 114 is to host 124 send the process of message (such as data message), may include：

Host 114 sends datagram 1 to host 124, and the purpose IP address of the data message 1 is the IP of host 124 Location 10.1.1.2.VTEP113 is after receiving data message 1, by locally turning shown in IP address 10.1.1.2 inquiry tables 10 It delivers, it is the tunnels VXLAN A1 to obtain outgoing interface.Then, VTEP113 can carry out VXLAN encapsulation to data message 1, to this VXLAN encapsulation process is not limited, and obtains the data message 2 after VXLAN encapsulation, and send datagram by the tunnels VXLAN A1 Text 2.

By the tunnels VXLAN A1 send datagram 2 when, since the purpose IP address of the tunnels VXLAN A1 is 2.2.2.2, therefore, VTEP113 can also be obtained being directed to IP address by routing table shown in IP address 2.2.2.2 inquiry tables 1 2.2.2.2 two routings, the two routings are equivalent routes.

Therefore, VTEP113 can also pass through if selection first is route in one routing of selection from the two routings Interface 1131 sends datagram 2, i.e., data message 2 is sent to ED111；If second routing of selection, passes through interface 1132 send datagram 2, i.e., data message 2 are sent to ED112.

Wherein, load-balancing algorithm may be used (such as in one routing of selection from the two routings in VTEP113 It is hash algorithm, polling algorithm etc., without limitation) one routing of selection, so as to by flow load sharing to ED111 with ED112 realizes the equilibrium of flow that is, on ED111 and ED112.

Wherein, if the link between VTEP113 and ED111 breaks down or ED111 breaks down, VTEP113 can To perceive this failure, and VTEP113 is in one routing of selection from two routings, is second routing of selection, without First of failure can be selected to route, to avoid that data message 2 is sent to the link or ED111 of failure, avoid data The loss of message 2 improves the reliability of transmission.

Assuming that ED111 receives data message 2, then ED111 carries out VXLAN decapsulations to data message 2, obtains datagram Text 1, is not limited this VXLAN decapsulation process.Then, ED111 can pass through the purpose IP address of data message 1 10.1.1.2 local forwarding table shown in inquiry table 9, it is the tunnels VXLAN B1 to obtain outgoing interface.Then, ED111 can be to data Message 1 carries out VXLAN encapsulation, obtains the data message 3 after VXLAN encapsulation, and send datagram 3 by the tunnels VXLAN B1.

By the tunnels VXLAN B1 send datagram 3 when, since the purpose IP address of the tunnels VXLAN B1 is 3.3.3.3, therefore, ED111 can also be by routing table shown in IP address 3.3.3.3 inquiry tables 2, to obtain for IP Two routings of location 3.3.3.3, and the two routings are equivalent routes.

Therefore, ED111 can also be route in selection one from the two routings, if first routing of selection, by connecing Mouthfuls 1111 send datagram 3, i.e., data message 3 are sent to ED121；If second routing of selection, passes through interface 1112 It sends datagram 3, i.e., data message 3 is sent to ED122.

Wherein, load-balancing algorithm (such as hash may be used in one routing of selection from the two routings in ED111 It is algorithm, polling algorithm etc., without limitation) one routing of selection, so as to by flow load sharing to ED121 with ED122 realizes the equilibrium of flow that is, on ED121 and ED122.

Wherein, if the link between ED111 and ED121 breaks down or ED121 breaks down, ED111 can feel Know this failure, and ED111 is in one routing of selection from two routings, is second routing of selection, without selecting First routing of failure, to avoid that data message 3 is sent to the link or ED121 of failure, avoids data message 3 It loses, improves the reliability of transmission.

Assuming that ED121 receives data message 3, then ED121 carries out VXLAN decapsulations to data message 3, obtains datagram Text 1, and local forwarding table shown in the purpose IP address 10.1.1.2 inquiry tables 8 by data message 1, obtaining outgoing interface is The tunnels VXLAN C2.ED121 carries out VXLAN encapsulation to data message 1, obtains the data message 4 after VXLAN encapsulation, and pass through The tunnels VXLAN C2 sends datagram 4.By the tunnels VXLAN C2 send datagram 4 when, due to the mesh of the tunnels VXLAN C2 IP address be 4.4.4.4, therefore, ED121 can also be connect by routing table shown in IP address 4.4.4.4 inquiry tables 4 Mouth 1213 does not record the correspondence of IP address 4.4.4.4 and interface 1213 in table 4.Then, it is sent out by interface 1213 Data message 4 is sent, i.e., data message 4 is sent to VTEP123.

After VTEP123 receives data message 4, VXLAN decapsulations are carried out to data message 4, obtain data message 1, and Local forwarding table shown in purpose IP address 10.1.1.2 inquiry tables 7 by data message 1, it is interface to obtain outgoing interface 1233, therefore, 1 is sent datagram by interface 1233.In this manner it is possible to data message 1 is sent to host 124, so far, It can complete the transmission process of data message.

In conclusion in the embodiment of the present application, by including the equipment group of at least two ED in data center configuration, and extremely Few two ED use identical group of IP address, in this way, the load balancing of flow can be realized at least two ED, realize flow Equilibrium, mitigate the processing pressure of each ED.Moreover, when an ED breaks down, service can also be provided by other ED, carried The reliability of high ED processing.

Based on similarly applying conceiving with the above method, the message transmitting method that the embodiment of the present application proposes can be applied In EVPN networks, which may include multiple data centers, subsequently by taking Liang Ge data centers as an example, in practical application, The quantity of data center can be more.In order to distinguish conveniently, the two data centers are known as the first data center (in such as data The heart 11) and the second data center (such as data center 12).

Include at least two the oneth ED in the first equipment group (such as equipment group 110) of the first data center, such as the first ED Include at least two the in the second equipment group (such as equipment group 120) of the second data center for the ED111 and ED112 in Fig. 1 Two ED, if the 2nd ED is the ED121 and ED122 in Fig. 1.The group address of first equipment group is IP address 2.2.2.2, the second equipment The group address of group is IP address 3.3.3.3.For any one the first ED in the first equipment group, the first ED can be with second 2nd ED connections each of in equipment group, and establish bgp neighbor.Similarly, for any one the 2nd ED in the second equipment group, 2nd ED can be connect with the first ED each of in the first equipment group, and establish bgp neighbor.

Shown in Figure 2, for the flow chart for the message transmitting method that the embodiment of the present application proposes, this method can be applied to Arbitrary first ED (such as ED111 or ED112), this method may include：

Step 201, it after receiving data message, is inquired by the destination address (such as purpose IP address) of the data message Forwarding table (such as MAC table, ARP table, routing table), obtains corresponding outgoing interface.

Step 202, if the outgoing interface is the first tunnel, pass through the destination address (such as purpose IP address) in first tunnel Table of query and routing obtains corresponding at least two routing；Wherein, the source address in first tunnel is the group of the first equipment group Location, the destination address in first tunnel are the group address of the second equipment group.

Step 203, selection one is route from least two routing, and the data message is sent to the road of selection By corresponding 2nd ED, so that data message is sent to destination host by the 2nd ED；Wherein, at least two routing The 2nd ED in each corresponding second equipment group of routing.

Referring to above-described embodiment, it is assumed that the first ED is ED111, then ED111 can pass through the purpose IP address of data message 10.1.1.2 local forwarding table shown in inquiry table 9, obtains corresponding outgoing interface.

Since the outgoing interface is the tunnels VXLAN B1 (i.e. the first tunnel), the source address of the tunnels VXLAN B1 is equipment group 110 The destination address of group address 2.2.2.2, VXLAN tunnel B1 be therefore the group address 3.3.3.3 of equipment group 120 passes through Routing table shown in the destination address 3.3.3.3 inquiry tables 2 of the tunnels VXLAN B1 obtains two for destination address 3.3.3.3 Routing, and the two routings are equivalent routes.

Then, ED111 one routing of selection from the two routings, if first routing of selection, passes through interface 1111 Data message is sent to the corresponding ED121 of the routing, data message is sent to destination host by ED121, this is transmitted across Journey repeats no more；If second routing of selection, the corresponding ED122 of the routing is sent to by interface 1112 by data message, Data message is sent to destination host by ED121.

Wherein, forwarding table, before obtaining corresponding outgoing interface, the first ED are being inquired by the destination address of the data message The first synchronization message of the 2nd ED transmissions can also be received, which can carry the address of destination host and next Address is jumped, and the next hop address is the group address of the second equipment group belonging to the 2nd ED；Then, the first ED determines destination Location is the first tunnel of the group address of the second equipment group；Then, the first ED can record the address of destination host in forwarding table With the correspondence in the first tunnel.

Wherein, the first ED, can also be to the first data center after receiving the first synchronization message that the 2nd ED is sent VTEP equipment sends the second synchronization message, which can carry address and the next hop address of destination host, should Next hop address can be the group address of the first equipment group belonging to the first ED.

Further, VTEP equipment can also be remembered after receiving second synchronization message in local forwarding table The correspondence of the address and the second tunnel of the destination host is recorded, the source address in second tunnel is the address of VTEP equipment, and The destination address in second tunnel is the group address of the first equipment group.

Referring to above-described embodiment, it is assumed that the first ED is ED111, then ED121 can be synchronous to ED111 transmissions with ED122 Message, and ED111 can receive the synchronization message, which can carry the address 10.1.1.2 of destination host under One jumps address, and the next hop address is the group address 3.3.3.3 of equipment group 123, rather than the IP of ED121 or ED122 Location.Then, ED111 determines that destination address is the first tunnel of group address 3.3.3.3, the i.e. tunnels VXLAN B1.Then, ED111 can To record the correspondence of the address tunnel the 10.1.1.2 and VXLAN B1 of destination host in forwarding table, ginseng is shown in Table 9.

ED111 can also send synchronization message after receiving above-mentioned synchronization message to the VTEP113 of the first data 11, The synchronization message can carry the address 10.1.1.2 and next hop address of destination host, and the next hop address is ED111 institutes The group address 2.2.2.2 of the equipment group 110 of category, rather than the IP address 2.2.2.10 of ED111.VTEP113 is receiving this together After walking message, the address 10.1.1.2 and the second tunnel (i.e. VXLAN tunnel A1) of destination host can also be recorded in forwarding table Correspondence, the source address of the tunnels VXLAN A1 is the address of VTEP113, and destination address is group address 2.2.2.2, referring to table Shown in 10.

Wherein, forwarding table, before obtaining corresponding outgoing interface, the first ED are being inquired by the destination address of the data message The route messages of the 2nd ED transmissions can also be received, the destination address which carries can be second belonging to the second ED The next hop address that the group address of equipment group, the route messages carry can be the address of the second ED.Then, the first ED can be true The receiving interface of the fixed route messages, and record in the routing table the group address of second equipment group, the 2nd ED address, should The correspondence of receiving interface.

Referring to above-described embodiment, it is assumed that the first ED is ED111, then ED121 and ED122 sends route messages to ED111. When ED121 sends route messages to ED111, the destination address which carries can be the group address of equipment group 120 3.3.3.3, the next hop address that route messages carry can be the IP address 3.3.3.10 of ED121；ED111 is passing through interface After 1111 receive the route messages, determine that the receiving interface of the route messages is interface 1111, in the routing table record group The IP address 3.3.3.10 of location 3.3.3.3, ED121, the correspondence of interface 1111, ginseng are shown in Table 2.In ED122 to ED111 When sending route messages, the destination address which carries is taken for group address 3.3.3.3, the route messages of equipment group 120 The next hop address of band can be the IP address 3.3.3.11 of ED122；ED111 is receiving route messages by interface 1112 Afterwards, it determines that the receiving interface of route messages is interface 1112, records the IP address of group address 3.3.3.3, ED122 in the routing table 3.3.3.11, the correspondence of interface 1112, ginseng are shown in Table 2.

Wherein, using the group address of the group address and the second equipment group of the first equipment group, in the first ED and the second equipment group The first tunnel is established between each of interior 2nd ED；And/or the group address using the first equipment group and first data center The second tunnel is established in the address of VTEP equipment between the first ED and VTEP equipment.For example, it is assumed that the first ED is ED111, The source IP address that the tunnels VXLAN A2, VXLAN tunnel A2 is established on ED111 is the group IP address 2.2.2.2 of equipment group 110, purpose IP address is the IP address 1.1.1.1 of VTEP113；It is corresponding, the tunnels VXLAN A1, VXLAN tunnel can be established on VTEP113 The source IP address of road A1 is the IP address 1.1.1.1 of VTEP113, and purpose IP address is the group IP address of equipment group 110 2.2.2.2.Furthermore, it is possible to establish the tunnels VXLAN B1 on ED111, the source IP address of the tunnels VXLAN B1 is group IP address 2.2.2.2, purpose IP address is the group IP address 3.3.3.3 of equipment group 120；It is corresponding, it can divide on ED121 and ED122 The tunnels VXLAN B2 is not established, and the source IP address of the tunnels VXLAN B2 is group IP address 3.3.3.3, and purpose IP address is for group IP Location 2.2.2.2.

Wherein, in the first ED one routing of selection from least two routing, load-balancing algorithm may be used (such as hash algorithm, polling algorithm) one routing of selection from least two routing；Alternatively, can be from described at least two The routing corresponding to the link not broken down, the i.e. corresponding link of the routing is selected not to break down in a routing, and should Corresponding 2nd ED is route not break down.

Based on similarly applying conceiving with the above method, the embodiment of the present application also provides a kind of message transmitting device, Include at least two first edge equipment ED in first equipment group of one data center, the message transmitting device is applied to arbitrary The first ED, shown in Figure 3, the message transmitting device includes：

Obtain module 301, for the data message by receiving destination address inquire forwarding table, obtain it is corresponding go out Interface；If the outgoing interface is the first tunnel, by the destination address table of query and routing in first tunnel, obtain it is corresponding extremely Few two routings；Wherein, include at least two in the second equipment group of the second data center being connect with first data center A 2nd ED, the source address in first tunnel are the group address of first equipment group, the destination address in first tunnel It is the group address of second equipment group；

Selecting module 302, for one routing of selection from least two routing；

Sending module 303, for the data message to be sent to the routing corresponding that the selecting module 302 selects Two ED, so that the data message is sent to destination host by the 2nd ED；Wherein, each of described at least two routing The 2nd ED in corresponding second equipment group of routing.

In one example, the message transmitting device can also include (not depending on going out in figure)：

Receiving module, the first synchronization message for receiving the 2nd ED transmissions, the first synchronization message carry destination host Address and next hop address, next hop address are the group address of the second equipment group belonging to the 2nd ED；

Determining module, for determining that destination address is the first tunnel of the group address of second equipment group；

Logging modle, the correspondence of address and the first tunnel for recording destination host in forwarding table.

The sending module 303 is additionally operable to send the second synchronization message to the VTEP equipment of the first data center, described the Two synchronization messages carry address and the next hop address of the destination host, which is belonging to the first ED The group address of one equipment group；So that the VTEP equipment records the address and the second tunnel of the destination host in forwarding table Correspondence, the source address in second tunnel are the addresses of the VTEP equipment, and the destination address in second tunnel is The group address of one equipment group.

In one example, the receiving module is additionally operable to receive the route messages that the 2nd ED is sent, the route messages The destination address of carrying is the address that group address, the next hop address of the second equipment group belonging to the 2nd ED are the 2nd ED； The determining module is additionally operable to determine the receiving interface of the route messages；The logging modle is additionally operable to remember in the routing table Record the group address of second equipment group, the address of the 2nd ED, the receiving interface correspondence.

Module is established, for the group address of group address and second equipment group using first equipment group, in institute It each of states in the first ED and second equipment group and to establish the first tunnel between the 2nd ED；And/or

Using the address of the VTEP equipment of the group address and first data center of first equipment group, described The second tunnel is established between one ED and the VTEP equipment.

The selecting module 302 is specifically used for selecting one from least two routing using load-balancing algorithm Routing；Alternatively, selecting the routing corresponding to the link not broken down from least two routing.

Edge device provided by the embodiments of the present application, for hardware view, hardware structure schematic diagram can specifically join See Fig. 4, which may include：Machine readable storage medium and processor, wherein：

Machine readable storage medium：Store instruction code.

Processor：Communicated with machine readable storage medium, read and execute stored in machine readable storage medium it is described Instruction code realizes the message transmissions operation of the application above-mentioned example application.

Here, machine readable storage medium can be any electronics, magnetism, optics or other physical storage devices, can be with Including or storage information, such as executable instruction, data, etc..For example, machine readable storage medium can be：RAM(Radom Access Memory, random access memory), volatile memory, nonvolatile memory, flash memory, memory driver is (as hard Disk drive), solid state disk, any kind of storage dish (such as CD, dvd) either similar storage medium or they Combination.

System, device, module or the unit that above-described embodiment illustrates can specifically realize by computer chip or entity, Or it is realized by the product with certain function.A kind of typically to realize that equipment is computer, the concrete form of computer can To be personal computer, laptop computer, cellular phone, camera phone, smart phone, personal digital assistant, media play In device, navigation equipment, E-mail receiver/send equipment, game console, tablet computer, wearable device or these equipment The combination of arbitrary several equipment.

For convenience of description, it is divided into various units when description apparatus above with function to describe respectively.Certainly, implementing this The function of each unit is realized can in the same or multiple software and or hardware when application.

It should be understood by those skilled in the art that, embodiments herein can be provided as method, system or computer program Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application Apply the form of example.Moreover, it wherein includes computer usable program code that the embodiment of the present application, which can be used in one or more, The computer implemented in computer-usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) The form of program product.

The application is with reference to method, the flow of equipment (system) and computer program product according to the embodiment of the present application Figure and/or block diagram describe.It is generally understood that being realized by computer program instructions each in flowchart and/or the block diagram The combination of flow and/or box in flow and/or box and flowchart and/or the block diagram.These computer journeys can be provided Sequence instruct to all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices processor with Generate a machine so that the instruction generation executed by computer or the processor of other programmable data processing devices is used for Realize the dress for the function of being specified in one flow of flow chart or multiple flows and/or one box of block diagram or multiple boxes It sets.

Computer or the processing of other programmable datas can be guided to set moreover, these computer program instructions can also be stored in In standby computer-readable memory operate in a specific manner so that instruction stored in the computer readable memory generates Manufacture including command device, the command device are realized in one flow of flow chart or multiple flows and/or block diagram one The function of being specified in a box or multiple boxes.

These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer Or the instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram The step of function of being specified in one box or multiple boxes.

Above is only an example of the present application, it is not intended to limit this application.For those skilled in the art For, the application can have various modifications and variations.It is all within spirit herein and principle made by any modification, equivalent Replace, improve etc., it should be included within the scope of claims hereof.

Claims

1. a kind of message transmitting method, which is characterized in that include at least two first in the first equipment group of the first data center Edge device ED, the method are applied to arbitrary first ED, the method includes：

If the outgoing interface is the first tunnel, by the destination address table of query and routing in first tunnel, obtain it is corresponding extremely Few two routings；Wherein, include at least two in the second equipment group of the second data center being connect with first data center A 2nd ED, the source address in first tunnel are the group address of first equipment group, the destination address in first tunnel It is the group address of second equipment group；

One routing of selection from least two routing, and routing that the data message is sent to selection corresponding the Two ED, so that the data message is sent to destination host by the 2nd ED；Wherein, each of described at least two routing The 2nd ED in corresponding second equipment group of routing.

2. according to the method described in claim 1, it is characterized in that, the destination address by the data message received is looked into Forwarding table is ask, before obtaining corresponding outgoing interface, the method further includes：

The first synchronization message of the 2nd ED transmissions is received, first synchronization message is with carrying address and the next-hop of destination host Location, and the next hop address is the group address of the second equipment group belonging to the 2nd ED；

Determine that destination address is the first tunnel of the group address of second equipment group；

The correspondence of the address and first tunnel of the destination host is recorded in forwarding table.

3. according to the method described in claim 2, it is characterized in that,

After first synchronization message for receiving the 2nd ED transmissions, the method further includes：

The second synchronization message is sent to the expansible Virtual Local Area Network endpoint of a tunnel VTEP equipment of the first data center, described the Two synchronization messages carry address and the next hop address of the destination host, which is belonging to the first ED The group address of one equipment group；So that the address that VTEP equipment records the destination host in forwarding table is corresponding with the second tunnel Relationship, the source address in second tunnel are the addresses of the VTEP equipment, and the destination address in second tunnel is first to set The group address of standby group.

4. according to the method described in claim 1, it is characterized in that, the destination address by the data message received is looked into Forwarding table is ask, before obtaining corresponding outgoing interface, the method further includes：

The route messages of the 2nd ED transmissions are received, the destination address that the route messages carry is second belonging to the 2nd ED The group address of equipment group, the address that next hop address is the 2nd ED；

It determines the receiving interface of the route messages, and records the group address of second equipment group, described in the routing table The address of two ED, the receiving interface correspondence.

5. method according to claim 1 or 3, which is characterized in that the method further includes：

Using the group address of the group address and second equipment group of first equipment group, in the first ED and described second Each of in equipment group the first tunnel is established between the 2nd ED；And/or

Using the address of the VTEP equipment of the group address and first data center of first equipment group, in the first ED The second tunnel is established between the VTEP equipment.

6. according to the method described in claim 1, it is characterized in that,

Described one routing of selection from least two routing, including：

One routing of selection from least two routing using load-balancing algorithm；Alternatively,

The routing corresponding to the link not broken down is selected from least two routing.

7. a kind of message transmitting device, which is characterized in that include at least two first in the first equipment group of the first data center Edge device ED, described device are applied to arbitrary first ED, and described device includes：

Module is obtained, the destination address for the data message by receiving inquires forwarding table, obtains corresponding outgoing interface；If The outgoing interface is the first tunnel, by the destination address table of query and routing in first tunnel, obtains corresponding at least two Routing；Wherein, include at least two second in the second equipment group of the second data center being connect with first data center ED, the source address in first tunnel are the group address of first equipment group, and the destination address in first tunnel is described The group address of second equipment group；

Selecting module, for one routing of selection from least two routing；

Sending module, corresponding 2nd ED of routing for the data message to be sent to the selecting module selection, so that The data message is sent to destination host by the 2nd ED；Wherein, each of described at least two routing routing corresponds to The 2nd ED in second equipment group.

8. device according to claim 7, which is characterized in that further include：

Receiving module, the first synchronization message for receiving the 2nd ED transmissions, the first synchronization message carry the address of destination host And next hop address, next hop address are the group address of the second equipment group belonging to the 2nd ED；

9. device according to claim 8, which is characterized in that the sending module is additionally operable to the first data center Expansible Virtual Local Area Network endpoint of a tunnel VTEP equipment sends the second synchronization message, and second synchronization message carries the mesh Host address and next hop address, the next hop address be the group address of the first equipment group belonging to the first ED；With The VTEP equipment is set to record the correspondence of the address and the second tunnel of the destination host, second tunnel in forwarding table The source address in road is the address of the VTEP equipment, and the destination address in second tunnel is the group address of the first equipment group.

10. device according to claim 7, which is characterized in that further include：

Receiving module, the route messages for receiving the 2nd ED transmissions, the destination address that the route messages carry are the 2nd ED The group address of the second affiliated equipment group, the address that next hop address is the 2nd ED；

Determining module, the receiving interface for determining the route messages；

Logging modle, for recording the group address of second equipment group in the routing table, the address of the 2nd ED, described connecing Receive the correspondence of interface.

11. the device according to claim 7 or 9, which is characterized in that further include：

Module is established, for the group address of group address and second equipment group using first equipment group, described the Each of in one ED and second equipment group the first tunnel is established between the 2nd ED；And/or

12. device according to claim 7, which is characterized in that

The selecting module is specifically used for one routing of selection from least two routing using load-balancing algorithm；Or Person selects the routing corresponding to the link not broken down from least two routing.