CN108259336A - Data center's interconnected method and device - Google Patents
Data center's interconnected method and device Download PDFInfo
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- CN108259336A CN108259336A CN201711172805.4A CN201711172805A CN108259336A CN 108259336 A CN108259336 A CN 108259336A CN 201711172805 A CN201711172805 A CN 201711172805A CN 108259336 A CN108259336 A CN 108259336A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/66—Layer 2 routing, e.g. in Ethernet based MAN's
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
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- Data Exchanges In Wide-Area Networks (AREA)
Abstract
This application provides data center's interconnected methods.In the application,The protection group address of each difference ED configurations of same data center is identical,It is equivalent to form a virtual protection group,And the protection group address (being equivalent to local terminal protection group) that the source in tunnel established between two different data centers is configured for ED in Local Data center,Destination is the protection group address (being equivalent to opposite end protection group) that ED is configured in the data center of opposite end,This means that tunnel between two different data centers is using protection group integrally to establish,So,For the ED at any data center,Traffic sharing will be carried out during subsequently again by tunnel to opposite end data center converting flow between each ED in the protection group (corresponding with the protection group address that ED in the data center of opposite end is configured) of opposite end data center,Finally realize the load balancing between difference ED in same data center.
Description
Technical field
This application involves network communication technologies, more particularly to data center's interconnected method and device.
Background technology
The data center of different location deployment passes through Ethernet Virtual Private Network (EVPN：Ethernet Virtual
Private Network) realize data center interconnection (DCI：Data Center Interconnection), data center is mutual
Connection can improve business robustness, reduce network delay, reduce network jitter etc..
EVPN is a kind of two-layer virtual private network (VPN：Virtual Private Network) technology, in EVPN
In, control plane uses Multiprotocol Border Gateway Protocol (MP：Multiprotocol Border Gateway Protocol) it is logical
EVPN routing iinformations are accused, data plane uses expansible Virtual Local Area Network (VXLAN：Virtual eXtensible LAN) envelope
Dress mode E-Packets.When different data center is dispersed in different location, EVPN is provided mutually for the data center of different location
Connection.
Invention content
This application provides method and apparatus, to realize the multiple and different of same data center in data center's interconnecting application
Load balancing between edge device.
The technical solution that the application provides includes：
A kind of data center's interconnected method, this method are applied to the edge device ED of data center, including：
Configuration protection group address；The protection group address is identical with the protection group address of other ED of same data center；
Notice next-hop is set as the EVPN routings of the protection group address；
Receive the EVPN routings that opposite end ED is noticed in the data center of opposite end；Wherein, the EVPN routings of the opposite end ED notices
Next-hop be the opposite end ED configuration protection group address；
The EVPN routings of reception are added to local EVPN routing tables, and check Local Data center and opposite end data center
Between whether have been established that source address is the protection group address of local terminal ED configurations, destination address is protection group that the opposite end ED is configured
The tunnel of address, if so, the outgoing interface being route added to the EVPN of local EVPN routing tables is set as the tunnel.
A kind of data center's interconnect device, the device are applied to the edge device ED of data center, including：
Dispensing unit, for protection group address to be configured in local terminal ED；Its of the protection group address and same data center
The protection group address of his ED is identical；
Advertising of route unit, for noticing the EVPN routings that next-hop is set as the protection group address；
Receiving unit is route, for receiving the EVPN routings that opposite end ED is noticed in the data center of opposite end；Wherein, the opposite end
The next-hop of the EVPN routings of ED notices is the protection group address of opposite end ED configurations；
Routing processing unit, the EVPN routings for the routing receiving unit to be received are added to local EVPN and route
Table, and check whether had been established between Local Data center and opposite end data center source address be local terminal ED protection group address,
Tunnel of the destination address for the protection group address of opposite end ED configurations, if so, will be added to local EVPN routing tables
The outgoing interface of EVPN routings is set as the tunnel.
As can be seen from the above technical solutions, in the application, the protection group of each difference ED configurations of same data center
Address is identical, is equivalent to form a virtual protection group, and the source in tunnel established between two different data centers is
The protection group address (being equivalent to local terminal protection group) that ED is configured in Local Data center, destination are that ED matches in the data center of opposite end
The protection group address (being equivalent to opposite end protection group) put, it means that the tunnel between two different data centers is to protect group
Integrally establish, in this way, for the ED at any data center, subsequently again by tunnel to opposite end data center converting flow when
It will be in each ED in the protection group (corresponding with the protection group address that ED in the data center of opposite end is configured) of opposite end data center
Between carry out traffic sharing, finally realize the load balancing between difference ED in same data center.
Description of the drawings
Attached drawing herein is incorporated into specification and forms the part of this specification, shows the implementation for meeting the disclosure
Example, and for explaining the principle of the disclosure together with specification.
Fig. 1 is data center's networking schematic diagram；
Fig. 2 is data center's networking schematic diagram of configuration protection group address that the application provides；
Fig. 3 is the method flow diagram that the application provides；
Fig. 4 is the embodiment application networking schematic diagram that the application provides；
Fig. 5 is the structure drawing of device that the application provides；
Fig. 6 is the hardware architecture diagram of Fig. 5 shown devices that the application provides.
Specific embodiment
Fig. 1 shows the networking of typical data center's interconnection.It is with DC100 and DC101 interconnections in networking shown in FIG. 1
Example.In Fig. 1, edge device (ED：Edge Device) 110, ED111 be DC1 outlet.ED112, ED113 are going out for DC2
Mouthful.
In DC1 or DC2 shown in Fig. 1, either ED or leaf equipment (Leaf) can all be configured only one and set
Standby mark, which can be loopback (Lookback) address.Such as in DC1 shown in FIG. 1, unique the one of ED110 configurations
A device identification is Lookback1a, and the only one device identification of ED111 configurations is Lookback2a, Leaf120 configurations
Only one device identification is Lookback3a, and the only one device identification of Leaf121 configurations is Lookback4a, in DC2,
The only one device identification of ED112 configurations is Lookback5a, and the only one device identification of ED113 configurations is
The only one device identification of Lookback6a, Leaf122 configuration is Lookback7a, and the only one of Leaf123 configurations is set
It is standby to be identified as Lookback8a.
When there is more ED in same data center, it is reliable to effectively improve network for progress load balancing between more ED
Property.But EVPN is two-layer virtual private network, there is presently no perfect load sharing schemes.
In order to realize, load balancing, the application improve the routing publication of EVPN between more ED in data center,
By the improvement, load balancing between more ED can be realized in data center.Before the method provided in description the application, first retouch
State this application involves data center：
Data center is divided into two parts of basal layer (Underlay) network and superimposed layer (Overlay) network.Overlay
Network and Underlay networks are independent from each other, and Overlay networks are the superpositions (Overlay) on Underlay network foundations
What first level logical network was formed.
ED or Leaf can be used to indicate the Unique Device of its configuration according to the generation of Underlay Routing Protocols in data center
Mark reachable Underlay (by taking Lookback addresses as an example) route and is advertised to opposite end, and the next-hop of Underlay routings is
Notice the interface IP address of the physical port of Underlay routings.Here Underlay Routing Protocols include static routing protocol
(such as preconfigured Routing Protocol), also including dynamic routing protocol (such as the common association such as Intermediate System to Intermediate System, ospf protocol
View).
After opposite end receives Underlay routings, the Underlay received routings are added to local Underlay routing tables
In.Also, opposite end can also route indicated Lookback addresses with the Underlay received and establish EVPN neighbours, to pass through
EVPN neighbours issue the EVPN routings in Overlay networks.
By taking the ED110 in DC1 shown in FIG. 1 as an example, ED110 is used to indicate this according to the generation of Underlay Routing Protocols
The Underlay that unique device identity, that is, Lookback1a of ED110 configurations is reachable is route, and be advertised to what is connected in same DC1
ED112, ED113 in Leaf120, Leaf121 and DC2.This ED110 configurations are used to indicate to ED112 notices with ED110
Loop-back address Lookback1 it is reachable Underlay routing for, wherein, ED110 notice Underlay routing it is next
Jump on ED110 with ED112 interconnection physical port interface IP address, when ED112 receive ED110 notice Underlay roads
By then the Underlay received routings are added in the Underlay routing tables of local by ED112, added to local Underlay roads
It is the interface IP address with the physical port of ED112 interconnections on above-mentioned ED110 by the next-hop that the Underlay in table is route.And
And ED112 can also establish EVPN neighbours with Lookback1a, to issue the EVPN roads in Overlay networks by EVPN neighbours
By.
At present, 5 kinds of EVPN routings of EVPN technical definitions, and influence forwarding there are three types of routeing, be respectively：
MAC/IP Advertisement Route：MAC/IP publication routings, referred to as 2 classes routing, for noticing MAC
Location and host route information；
Inclusive Multicast Ethernet Tag Route：Inclusive multicast Ethernet label routing, again
Referred to as IMET routings, abbreviation 3 classes routing, for noticing VTEP and its affiliated VXLAN information, with the automatic discovery VTEP of realization, certainly
It is dynamic to establish VXLAN tunnels and auto-associating VXLAN and VXLAN tunnels；
IP Prefix advertisement route：IP prefix routes, referred to as 5 classes routing, for IP prefixes
Form notices BGP IPv4 singlecast routers or BGP IPv6 singlecast routers；
In existing scheme, either ED or Leaf, the next-hop of the EVPN routings of notice use configuration
Lookback addresses.
In this application, it in order to realize the load balancing in same data center between more ED, can be directed in each data
Each ED in the heart additionally makes configuration, the step 301 specifically to see below.
The method provided below the application is described：
Referring to Fig. 3, Fig. 3 is the method flow diagram that the application provides.The flow is applied to the ED of data center.
Step 301, configuration protection group address；The protection group address is with the protection group of other ED of same data center
Location is identical.
In this application, in order to realize the load balancing in same data center between more ED, for each data center
In each ED make following configuration：Configuration protection group address.
Wherein, difference ED is configured same protection group address in same data center, the ED configurations in different data center
Protect group address different.Still in networking shown in Fig. 1, then the same protection group address of ED110, ED111 configuration in DC1 (is denoted as
Protect group address 1), the same protection group address of ED112, ED113 configuration (being denoted as protection group address 2) in DC2.Wherein, it protects
Group address 1 is different from protection group address 2.
In this application, same protection group address is configured on each ED in same data center, it is same is equivalent to realization
One virtual protection group of formation between each difference ED in one data center, and the member that ED is protection group, protection group
Address is the protection group address being configured on ED.The virtual protection group that each difference ED in same data center is formed is as one
Overall work.On the basis of networking shown in Fig. 1, Fig. 2 shows data center's networking schematic diagrams of configuration protection group address
In this application, the protection group address that the ED in data center is configured is with being different from the Lookback that ED is configured in itself
Location, the Lookback addresses being configured in itself relative to ED are a virtual addresses, are not used to mark ED.
Step 302, notice next-hop is set as the EVPN routings of the protection group address.
As described above, in current EVPN, for ED when noticing EVPN routings, the next-hop of the EVPN routings of notice is ED
The loop-back address Lookback of configuration itself.And in the application, the scheme of ED notice EVPN routings is improved, for ED
The EVPN routings of notice, next-hop is no longer the loop-back address Lookback that ED is configured in itself, but protects group address.
It is next with EVPN routings after ED or Leaf that same data center is in local terminal ED receive EVPN routings
Tunnel is established in jump.
It, will as steps described below 303 after the opposite end ED that different data center is in local terminal ED receives EVPN routings
The operation that middle local terminal ED is performed performs.
Equally, opposite end ED also can be according to the description publication next-hop of the above-mentioned steps 302 protection group configured for opposite end ED
The EVPN routings of address after local terminal ED receives the EVPN routings of opposite end ED notices, perform following step 303.
Step 303, local terminal ED receives the EVPN routings that opposite end ED is noticed in the data center of opposite end, and the EVPN of reception is route
Added to local EVPN routing tables, and check and source address whether has been established between Local Data center and opposite end data center as this
The tunnel of the protection group address, destination address of ED configurations for the protection group address of opposite end ED configurations is held, if so, by adding
The outgoing interface being route to the EVPN of local EVPN routing tables is set as the tunnel；Wherein, the EVPN routings of the opposite end ED notices
Next-hop be the opposite end ED configuration protection group address.
As one embodiment, above-mentioned tunnel is not set up between Local Data center and opposite end data center if checking,
Then establish above-mentioned tunnel between Local Data center and opposite end data center, and will be added to the EVPN of local EVPN routing tables
The outgoing interface of routing is set as above-mentioned tunnel.
As described above, the protection group address of each difference ED configurations of same data center is identical in the application, is equivalent to
A virtual protection group is formed, and combines the tunnel that the description in step 303 is known that between two different data centers
The protection group address (being equivalent to local terminal protection group) that is configured for ED in Local Data center of source, destination is in end data
The protection group address (being equivalent to opposite end protection group) of ED configurations in the heart, it means that the tunnel between two different data centers is
It is integrally established using protection group, in this way, for the ED at any data center, is subsequently turned again by tunnel to opposite end data center
It will be in the protection group (corresponding with the protection group address that ED in the data center of opposite end is configured) of opposite end data center when sending out flow
Each ED between carry out traffic sharing, finally realize the load balancing between difference ED in same data center.
So far, flow shown in Fig. 3 is completed.
In this application, the EVPN routings of local terminal ED notices, it may be possible to which the EVPN routings that local terminal ED is locally generated also have
May be EVPN routings (the referred to as non-local EVPN roads for the notices of the ED in other opposite end data centers that local terminal ED is received
By), it route below by subdivision local EVPN routings and non-local EVPN and is set as to describe how to notice next-hop in step 302
Protect the EVPN routings of group address：
As one embodiment, in step 302 notice next-hop be set as it is described protection group address EVPN routing include with
Lower step b1 to b3：
Step b1, if the inclusive multicast Ethernet label that EVPN routings to be noticed are defined for the EVPN of local terminal ED generations
Routing (local 3 classes routing), then the next-hop for setting the inclusive multicast Ethernet label routing (local 3 classes routing) is this
ED configured protection group address in end is simultaneously noticed.
Wherein, in order to ensure inclusive multicast Ethernet label routing (local 3 class roads that the EVPN of local terminal ED generations is defined
By) next-hop be set as the configured protection group address of local terminal ED, need to make following configuration in advance：Two layers of void are configured in local terminal ED
Intend exchanging example (VSI：Virtual Switch Instance) relevant VXLAN ID, routing property (RT：Route
Target) and, VXLAN ID, the MAC Address of three layers of VXLAN is configured in local terminal ED；Wherein, two layers of relevant VXLAN of VSI
ID, RT are identical with relevant VXLAN ID of VSI, the RT that other ED in same data center are configured respectively；Three layers of VXLAN's
VXLAN ID, MAC Address are identical with VXLAN ID, the MAC Address of the three layers of VXLAN being configured of other ED in same data center.
By being configured above, finally ensure the inclusive multicast Ethernet label road of each ED generations in same data center
All it is identical by (local 3 classes routing), based on this, when the inclusive multicast Ethernet label that the EVPN of local terminal ED generations is defined
During routing (local 3 classes routing), so that it may by the next-hop of the inclusive multicast Ethernet label routing (local 3 classes routing) of generation
It is set as the configured protection group address of local terminal ED.The protection of each difference ED configurations based on same data center as described above
Group address is identical, is equivalent to form a virtual protection group, then local terminal ED is by the inclusive multicast Ethernet label road of generation
The configured protection group address of local terminal ED is set as by the next-hop of (local 3 classes routing), it is meant that each in Local Data center
A ED is externally worked as a whole with protection group, to realize that the load balancing in same data center between difference ED provides
Basis.
Similarly, relevant VXLAN ID of two layers of VSI, the RT of each ED configuration be identical in the data center of opposite end, Yi Jisan
VXLAN ID, the MAC Address of layer VXLAN is identical.
Step b2, if the MAC/IP publications routing (local 2 that EVPN routings to be noticed are defined for the EVPN of local terminal ED generations
Class is route) or IP prefix routes (local 5 classes routing), then when check MAC/IP publications routing or IP prefix routes meet it is pre-
If routing policy when, setting meets the MAC/IP publication routings (local 2 classes routing) of preset routing policy or IP prefixes
The next-hop of routing (local 5 classes routing) is the configured protection group address of local terminal ED and notices.
Step b3, if the MAC/IP publications routing (non-that EVPN routings to be noticed are defined for the local terminal ED EVPN received
Ground 2 class routing) or IP prefix routes (non-local 5 class routing), then the MAC/IP of reception is set to issue routing (non-local 2 class
Routing) or IP prefix routes (non-local 5 class routing) the next-hop protection group address configured for local terminal ED and notice.
As one embodiment, in the step b2 being described above, local terminal ED just generates MAC/ generally when as gateway
IP publications routing (local 2 classes routing) and IP prefix routes (local 5 classes routing).
Wherein, when local terminal ED generation MAC/IP publications routing (local 2 classes routing), not broadly by the MAC/ of generation
The next-hop of IP publications routing (local 2 classes routing) is set as the configured protection group address of local terminal ED, but judges generation
Whether MAC/IP publications routing (local 2 classes routing) meets preset routing policy, when only meeting preset routing policy,
The next-hop of the MAC/IP publications routing (local 2 classes routing) of generation can be set as the configured protection group address of local terminal ED.
Equally, when local terminal ED generation IP prefix routes (local 5 classes routing), not broadly by the IP prefixes road of generation
The configured protection group address of local terminal ED is set as by the next-hop of (local 5 classes routing), but judges the IP prefix routes of generation
Whether (local 5 classes routing) meets preset routing policy, just can will be before the IP of generation when only meeting preset routing policy
The next-hop for sewing routing (local 5 classes routing) is set as the configured protection group address of local terminal ED.
In one example, preset routing policy includes the specified network segment, is used to indicate the road for matching the specified network segment
By performing following operate：Next-hop is revised as the configured protection group address of local terminal ED.Wherein, preset routing policy includes
The specified network segment can be a network segment, or more than two different segments.
Based on the description above for preset routing policy, then in the application, above-mentioned local terminal ED judges the MAC/ of generation
Whether IP publications routing (local 2 classes routing) or IP prefix routes (local 5 classes routing) meet preset routing policy and can wrap
It includes：Whether the network segment belonging to the MAC/IP publications routing of local terminal ED inspection generations or IP prefix routes matches the specified net
Section, if so, determining that the MAC/IP publications routing or IP prefix routes meet preset routing policy.Citing description：
If preset routing policy includes more than two specified network segments, then local terminal ED is for the MAC/IP publications road of generation
By (local 2 classes routing), check whether the network segment belonging to the MAC/IP publications routing (local 2 classes routing) of the generation is included in road
In the specified network segment included by strategy, if so, determining that the MAC/IP publications routing (local 2 classes routing) of generation meets
Preset routing policy；Equally, for the IP prefix routes of generation (local 5 classes routing), the IP prefix routes of the generation are checked
Whether the network segment belonging to (local 5 classes routing) is included in the specified network segment that routing policy is included, if so, determining life
Into IP prefix routes (local 5 classes routing) meet preset routing policy.
By above-mentioned routing policy, the MAC/IP for only the meeting routing policy publications that local terminal ED is locally generated can be realized
Routing (local 2 classes routing), IP prefix routes (local 5 classes routing) can just be set as the next-hop protection group configured for local terminal ED
Address, flexibility are good.
And it route (local 2 classes routing), IP prefixes road when local terminal ED judges the MAC/IP publications for being unsatisfactory for routing policy
It by (local 5 classes routing), is then performed according to existing EVPN routing plans, the MAC/IP publication routings of routing policy will be unsatisfactory for
The next-hop of (local 2 classes routing) is set as the unique mark such as loop-back address Lookback of local terminal ED configurations, will be unsatisfactory for road
The unique mark such as loop-back address of local terminal ED configurations is set as by the next-hop of the IP prefix routes (local 5 classes routing) of strategy
Lookback。
Based on being described above, carried out between how realizing the ED in same data center below based on one embodiment description
Load balancing：
Fig. 4 shows the embodiment application networking schematic diagram that the application provides.In networking shown in Fig. 4 with DC401 with
For DC402 interconnections.In Fig. 4, ED411, ED412 are the outlets of DC401.ED413, ED414 are the outlets of DC402.
In DC401 or DC402 shown in Fig. 4, only one equipment mark can be configured in either ED or Leaf
Know, which can be Lookback addresses.For example the only one device identification of ED411 configurations shown in Fig. 4 is
The only one device identification of Lookback1c, ED412 configuration is Lookback2c, the only one equipment mark of ED413 configurations
Know for Lookback3c, the only one device identification that ED414 is configured is Lookback4c.Leaf and the application relationship are little,
It repeats no more.
In this application, same protection group address (being denoted as Group1d) can be also configured in ED411, ED412 in DC401,
A protection group (being denoted as Group1) is formed, ED413, ED414 in DC402 can also be configured same protection group address and (be denoted as
Group2d), a protection group (being denoted as Group2) is formed, Group1d is different from Group2d.
In this application, ED411, ED412 configuration in DC401 identical (are denoted as with the relevant VXLAN ID of two layers of VSI
VXLAN100), VXLAN ID (being denoted as VXLAN200), the MAC Address of RT (being denoted as RT1) and the identical three layers of VXLAN of configuration
(being denoted as MAC1).
In this application, ED413, ED414 configuration in DC402 identical (are denoted as with the relevant VXLAN ID of two layers of VSI
VXLAN300), the VXLAN ID of RT (being denoted as RT2, different from RT1) and the identical three layers of VXLAN of configuration (are denoted as
VXLAN400), MAC Address (being denoted as MAC2).
Advertising of route is described by taking ED411 as an example：
According to Underlay Routing Protocols, in the present embodiment, ED411 generations are used to indicate the unique of this ED110 configurations
Underlay routings reachable device identification Lookback1c, and it is advertised to each Leaf and DC402 connected in same DC1
In ED413, ED414.The unique device identity of this ED411 configurations is used to indicate (with loopback to ED413 notices with ED411
For the Lookback1c of location) for reachable Underlay routings, wherein, the next-hop of the Underlay routings of ED411 notices
For on ED411 with ED413 interconnection physical port interface IP address, when ED413 receive ED411 notice Underlay routing,
Then the Underlay received routings are added in the Underlay routing tables of local by ED413, are route added to local Underlay
The next-hop of Underlay routings in table is the interface IP address with the physical port of ED413 interconnections on above-mentioned ED411.Also,
The loop-back address Lookback1c that ED413 can also route instruction with Underlay establishes EVPN neighbours, to be sent out by EVPN neighbours
EVPN routings in cloth Overlay networks.
According to Underlay Routing Protocols, in the present embodiment, ED411 generations are used to indicate the protection of this ED110 configurations
Underlay routings reachable group address Group1d, and be advertised in each Leaf and DC402 connected in same DC1
ED413、ED414.The protection group address Group1d for being used to indicate this ED411 configurations to ED413 notices with ED411 is reachable
For Underlay routings, wherein, the next-hop of the Underlay routings of ED411 notices is the object with ED413 interconnections on ED411
The interface IP address of port is managed, when ED413 receives the Underlay routings of ED411 notices, inspection local Underlay routing tables are
It is not no be useful for the reachable Underlay routings of instruction protection group address Group1d, if it is not, then ED413 will be received
Underlay routings are added in the Underlay routing tables of local, the Underlay roads added in local Underlay routing tables
By interface IP address of the next-hop for the upper physical ports interconnected with ED413 of above-mentioned ED411；If so, in local Underlay
Existing be used to indicate in the reachable Underlay routings of protection group address Group1d newly increases reception in routing table
The next-hop (on above-mentioned ED411 and interface IP address of the physical port of ED413 interconnections) of Underlay routings.ED412 also can be by
Underlay routings are noticed by way of being used to indicate the reachable Underlay routings of protection group address Group1d according to ED411,
Final to realize in the Underlay routing tables of ED413 locals, Group1d is finally associated with two next-hops, and one is on ED411
With the interface IP address of the physical port of ED413 interconnections, another interface for ED412 upper physical ports interconnected with ED413
Location.Final associated two next-hops of Group1d have been illustrated below：
Next-hop 1e：For the interface IP address with the physical port of ED413 interconnections on ED411；
Next-hop 2e：For the interface IP address with the physical port of ED413 interconnections on ED412.
The two next-hops are next-hop of equal value.
According to EVPN Routing Protocols, ED411 is set as local terminal when noticing EVPN routings, by the EVPN next-hops routeing
Protection group address Group1d configured ED411 notices modified EVPN routings.EVPN roads are noticed to ED413 with ED411
For, wherein, the EVPN routings of ED411 notices are route for ED411 2 classes locally generated, next-hop Group1d.For just
In description, ED411 is denoted as EVPN routings 500 to the EVPN routings that ED413 is noticed here.
When ED413 receives the EVPN routings 500 of ED411 notices, then EVPN routings 500 are added to local EVPN route
Table, the next-hop added to the EVPN routings 500 of local EVPN routing tables is Group1d.
ED413 checks Local Data center, that is, DC402 with opposite end data center (data center residing for ED411) i.e.
Whether have been established that source address is the configured protection group address i.e. Group2d of this ED413, destination address is between DC401
The tunnel of Group1d.
ED413, which is checked, does not set up that source address is Group2d, destination address is Group1d's between DC402 and DC401
Tunnel is then established the tunnel that source address is Group2d, destination address is Group1d between DC402 and DC401, will be added to
The outgoing interface of the EVPN routings 500 of local EVPN routing tables is set as the tunnel of the foundation.
Similarly, it is configured to be set as local terminal ED412 when noticing EVPN routings by ED412 for the EVPN next-hops routeing
Group address Group1d is protected, notices modified EVPN routings.By taking ED412 is to ED413 notice EVPN routings as an example, wherein,
The 2 classes routing that the EVPN routings of ED412 notices are locally generated for ED412, next-hop Group1d.For ease of description, here will
ED412 is denoted as EVPN routings 600 to the EVPN routings that ED413 is noticed.
When ED413 receives the EVPN routings 600 of ED412 notices, then EVPN routings 600 are added to local EVPN route
Table, the next-hop added to the EVPN routings 600 of local EVPN routing tables is Group1d, and check Local Data center i.e.
Whether source address is had been established between DC402 and opposite end data center (data center residing for ED412) i.e. DC401 as this ED413
Tunnels of the configured protection group address, that is, Group2d, destination address for Group1d.
The tunnel that source address is Group2d, destination address is Group1d has been established between checking DC402 and DC401 in ED413
Road is then not repeated to establish same tunnel, will be directly set as added to the outgoing interface of the EVPN of local EVPN routing tables routings 600
The tunnel of the foundation.
The mode of ED413, ED414 notice routing is repeated no more similar to ED411, ED412.
Later, DC402 communicates with DC401, by taking the ED413 in DC402 is to DC401 transmitting data flows as an example：
ED413 determines outgoing interface as tunnel in transmitting data flow, according to local EVPN routing tables, and next-hop is
Group1d。
ED413 is associated with two interface IP addresses according to discovery Group1d in the Underlay routing tables of local：One is ED411
The interface IP address of the physical port of upper and ED413 interconnections；Another is the interface with the physical port of ED413 interconnections on ED412
Address, then ED413 selects one from two interface IP addresses and the tunnel by being used as outgoing interface is sent out to the interface IP address of selection
Send data flow.Here, ED413 selects the mode of one to have from two interface IP addresses
Deng.Final ED413 selects the load balancing between two ED realized in DC401 from two interface IP addresses.
So far, the description of embodiment is completed.
The method provided above the application is described.The device provided below the application is described：
Referring to Fig. 5, Fig. 5 is the structure drawing of device that the application provides.The device is applied to the ED of data center, wherein, together
Same protection group address is configured in difference ED in one data center.
As shown in figure 5, the device may include：
Dispensing unit, for protection group address to be configured in local terminal ED；Its of the protection group address and same data center
The protection group address of his ED is identical；
Advertising of route unit, for noticing the EVPN routings that next-hop is set as the protection group address；
Receiving unit is route, for receiving the EVPN routings that opposite end ED is noticed in the data center of opposite end；Wherein, the opposite end
The next-hop of the EVPN routings of ED notices is the protection group address of opposite end ED configurations；
Routing processing unit, the EVPN routings for the routing receiving unit to be received are added to local EVPN and route
Table, and check whether had been established between Local Data center and opposite end data center source address be local terminal ED protection group address,
Tunnel of the destination address for the protection group address of opposite end ED configurations, if so, will be added to local EVPN routing tables
The outgoing interface of EVPN routings is set as the tunnel.
As one embodiment, the routing processing unit further check Local Data center in end data
The tunnel is not set up between the heart, then the tunnel is established between Local Data center and opposite end data center, and will add
The outgoing interface being route to the EVPN of local EVPN routing tables is set as the tunnel.
As one embodiment, the advertising of route unit is specifically used for：
If the inclusive multicast Ethernet label routing that EVPN routings to be noticed are defined for the EVPN of local terminal ED generations,
The next-hop for setting the inclusive multicast Ethernet label routing is the configured protection group address of local terminal ED and notices；
If EVPN routings to be noticed are the EVPN of the local terminal ED generations MAC/IP publications routings defined or IP prefix routes,
Then when the MAC/IP for checking generation issues routing or IP prefix routes meet preset routing policy, setting meets preset
The MAC/IP publications routing of routing policy or the next-hop of IP prefix routes are the configured protection group address of local terminal ED and notice；
If EVPN routings to be noticed are the local terminal ED EVPN received the MAC/IP publications routings defined or IP prefixes road
By it is the configured protection group address of local terminal ED then to set the MAC/IP publications routing of reception or the next-hop of IP prefix routes
And it notices.
As one embodiment, the preset routing policy includes the specified network segment, is used to indicate the matching specified net
The EVPN routings of section perform following operate：Next-hop is set as the configured protection group address of local terminal ED；
The advertising of route unit checks that the MAC/IP publications routing of generation or IP prefix routes meet preset road
Included by strategy：
Whether the network segment belonging to the MAC/IP publications routing of inspection generation or IP prefix routes matches the specified network segment,
If so, determine that the MAC/IP publications routing of generation or IP prefix routes meet preset routing policy.
As one embodiment, the dispensing unit is further configured two-layer virtual and exchanges the relevant VXLAN of example VSI
ID, routing property RT and VXLAN ID, the MAC Address that three layers of VXLAN is configured；
Wherein, the VSI that relevant VXLAN ID of VSI, RT are configured respectively with other ED in same data center is relevant
VXLAN ID, RT are identical；
Three layers of VXLAN that VXLAN ID, the MAC Address of three layers of VXLAN is configured with other ED in same data center
VXLAN ID, MAC Address it is identical.
So far, the structure description of Fig. 5 shown devices is completed.
Accordingly, present invention also provides the hardware structure diagrams of Fig. 5 shown devices.As shown in fig. 6, the hardware configuration packet
It includes：
It may include processor 601, the machine readable storage medium 602 for being stored with machine-executable instruction.Processor 601 with
Machine readable storage medium 602 can communicate via system bus 603.Also, by reading and performing machine readable storage medium
In 602 above-described data center is can perform with the corresponding machine-executable instruction of data center's interconnection logic, processor 601
Interconnected method.
Machine readable storage medium 602 referred to herein can be any electronics, magnetism, optics or other physical stores
Device can include or store information, such as executable instruction, data, etc..For example, machine readable storage medium can be：With
Machine access memory (English：Radom Access Memory, referred to as：RAM), volatile memory, nonvolatile memory, sudden strain of a muscle
It deposits, memory driver (such as hard disk drive), solid state disk, any kind of storage dish (such as CD, dvd) or similar
Storage medium or combination thereof.
So far, hardware configuration description shown in fig. 6 is completed.
In this application, a kind of machine readable storage medium including machine-executable instruction is additionally provided, such as in Fig. 6
Machine readable storage medium 602, the machine-executable instruction can perform by the processor 601 in data center's interconnect device
To realize data center's interconnected method described above.
Specifically, by call and perform interconnect the corresponding machine of logic with data center in machine readable storage medium can
Execute instruction, processor 601 can perform the operation in the interconnected method of data above center.
The foregoing is merely the preferred embodiment of the application, not limiting the application, all essences in the application
God and any modification, equivalent substitution, improvement and etc. within principle, done, should be included within the scope of the application protection.
Claims (10)
1. a kind of data center's interconnected method, which is characterized in that this method is applied to the edge device ED of data center, including：
Configuration protection group address；The protection group address is identical with the protection group address of other ED of same data center；
Notice next-hop is set as the EVPN routings of the protection group address；
Receive the EVPN routings that opposite end ED is noticed in the data center of opposite end；Wherein, under the EVPN routings of the opposite end ED notices
One jumps the protection group address for opposite end ED configurations；
The EVPN routings of reception are added to local EVPN routing tables, and check between Local Data center and opposite end data center
Whether source address be the protection group address of local terminal ED configuration, destination address be the opposite end ED configuration protection group address is had been established
Tunnel, if so, the outgoing interface being route added to the EVPN of local EVPN routing tables is set as the tunnel.
2. according to the method described in claim 1, it is characterized in that, this method further includes：
The tunnel is not set up between Local Data center and opposite end data center if checking, Local Data center with it is right
The tunnel is established between end data center, and the outgoing interface being route added to the EVPN of local EVPN routing tables is set as described
Tunnel.
3. according to the method described in claim 1, it is characterized in that, the notice next-hop is set as the protection group address
EVPN routings include：
If the inclusive multicast Ethernet label routing that EVPN routings to be noticed are defined for the EVPN of local terminal ED generations, is set
The next-hop of the inclusive multicast Ethernet label routing protection group address configured for local terminal ED is simultaneously noticed；
If EVPN routings to be noticed are the EVPN of the local terminal ED generations MAC/IP publications routings defined or IP prefix routes, when
When checking that the MAC/IP publications routing of generation or IP prefix routes meet preset routing policy, setting meets preset routing
The MAC/IP publications routing of strategy or the next-hop of IP prefix routes are the configured protection group address of local terminal ED and notice；
If EVPN routings to be noticed are the local terminal ED EVPN received the MAC/IP publications routings defined or IP prefix routes,
The MAC/IP publications routing or the next-hop of IP prefix routes that setting receives are the configured protection group address of local terminal ED and lead to
It accuses.
4. according to the method described in claim 3, it is characterized in that, the preset routing policy is used for including specifying the network segment
Indicate that the EVPN routings for matching the specified network segment perform following operate：Next-hop is with being set as the configured protection groups of local terminal ED
Location；
The MAC/IP publications routing for checking generation or IP prefix routes meet preset routing policy and include：
Whether the network segment belonging to the MAC/IP publications routing of inspection generation or IP prefix routes matches the specified network segment, if
It is to determine that the MAC/IP publications routing of generation or IP prefix routes meet preset routing policy.
5. method according to any one of claims 1 to 4, which is characterized in that
Two-layer virtual is configured and exchanges relevant VXLAN ID of example VSI, routing property RT, wherein, two layers of relevant VXLAN of VSI
ID, RT are identical with relevant VXLAN ID of VSI, the RT that other ED in same data center are configured respectively；
VXLAN ID, the MAC Address of three layers of VXLAN, VXLAN ID, MAC Address and the same data of three layers of VXLAN are configured
VXLAN ID, the MAC Address of three layers of VXLAN that other ED are configured are identical in center.
6. a kind of data center's interconnect device, which is characterized in that the device is applied to the edge device ED of data center, including：
Dispensing unit, for protection group address to be configured in local terminal ED；The protection group address and other ED of same data center
Protection group address it is identical；
Advertising of route unit, for noticing the EVPN routings that next-hop is set as the protection group address；
Receiving unit is route, for receiving the EVPN routings that opposite end ED is noticed in the data center of opposite end；Wherein, the opposite end ED leads to
The next-hop of the EVPN routings of announcement is the protection group address of opposite end ED configurations；
Routing processing unit, the EVPN routings for the routing receiving unit to be received are added to local EVPN routing tables, and
Check that it is the protection group address of local terminal ED, destination that source address whether has been established between Local Data center and opposite end data center
Tunnel of the location for the protection group address of opposite end ED configurations, if so, by being route added to the EVPN of local EVPN routing tables
Outgoing interface be set as the tunnel.
7. device according to claim 6, which is characterized in that the routing processing unit is further checking local terminal number
According to the tunnel is not set up between center and opposite end data center, then established between Local Data center and opposite end data center
The tunnel, and the outgoing interface being route added to the EVPN of local EVPN routing tables is set as the tunnel.
8. device according to claim 6, which is characterized in that the advertising of route unit is specifically used for：
If the inclusive multicast Ethernet label routing that EVPN routings to be noticed are defined for the EVPN of local terminal ED generations, is set
The next-hop of the inclusive multicast Ethernet label routing protection group address configured for local terminal ED is simultaneously noticed；
If EVPN routings to be noticed are the EVPN of the local terminal ED generations MAC/IP publications routings defined or IP prefix routes, when
When checking that the MAC/IP publications routing of generation or IP prefix routes meet preset routing policy, setting meets preset routing
The MAC/IP publications routing of strategy or the next-hop of IP prefix routes are the configured protection group address of local terminal ED and notice；
If EVPN routings to be noticed are the local terminal ED EVPN received the MAC/IP publications routings defined or IP prefix routes,
The MAC/IP publications routing or the next-hop of IP prefix routes that setting receives are the configured protection group address of local terminal ED and lead to
It accuses.
9. device according to claim 8, which is characterized in that the preset routing policy includes the specified network segment, is used for
Indicate that the EVPN routings for matching the specified network segment perform following operate：Next-hop is with being set as the configured protection groups of local terminal ED
Location；
The advertising of route unit checks that the MAC/IP publications routing of generation or IP prefix routes meet preset routing plan
Slightly include：
Whether the network segment belonging to the MAC/IP publications routing of inspection generation or IP prefix routes matches the specified network segment, if
It is to determine that the MAC/IP publications routing of generation or IP prefix routes meet preset routing policy.
10. according to any device of claim 6 to 9, which is characterized in that
The dispensing unit is further configured two-layer virtual and exchanges relevant VXLAN ID of example VSI, routing property RT, Yi Jipei
Put VXLAN ID, the MAC Address of three layers of VXLAN；
Wherein, the relevant VXLAN of VSI that relevant VXLAN ID of VSI, RT are configured respectively with other ED in same data center
ID, RT are identical；
VXLAN ID, MAC Address and the three layers of VXLAN of other ED configurations in same data center of three layers of VXLAN
VXLAN ID, MAC Address are identical.
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| CN111865803A (en) * | 2020-06-01 | 2020-10-30 | 锐捷网络股份有限公司 | Route processing method and device based on EVPN |
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