CN1870577A - Virtual exchange access method, device and virtual exchange system based on Ethernet frame - Google Patents
Virtual exchange access method, device and virtual exchange system based on Ethernet frame Download PDFInfo
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- CN1870577A CN1870577A CNA2005100839737A CN200510083973A CN1870577A CN 1870577 A CN1870577 A CN 1870577A CN A2005100839737 A CNA2005100839737 A CN A2005100839737A CN 200510083973 A CN200510083973 A CN 200510083973A CN 1870577 A CN1870577 A CN 1870577A
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Abstract
This invention provides a virtual exchange access method, a device and a system based on the Ether frame, which sets up a corresponding relation between an ether layer address information and a virtual exchange channel to let DRE decide the virtual exchange channel of said ether frame based on the ether layer address information and said corresponding relation so as to transmit the ether frame based on its corresponding virtual channel. This invention provides a new access method of virtual switch, in which, the edge DRE can transmit the ether frame with different ether address information via different interfaces +Vlan to enrich the access method for the virtual switch.
Description
Technical field
The present invention relates to the network communications technology field, be specifically related to a kind of virtual exchange access method, device and virtual exchange system based on Ether frame.
Background technology
Along with the continuous increase of Internet scale, various network services are fallen over each other to emerge in large numbers, and advanced multimedia system emerges in an endless stream.Because real time business is comparatively responsive to characteristics such as network transfer delay, delay jitters, when sudden high FTP being arranged on the network or contain the business such as HTTP of image file, real time business will be subjected to very big influence; On the other hand, multimedia service a large amount of bandwidth that accounted for, like this, the key business that existing network will guarantee just is difficult to be transmitted reliably.So various QoS technology are arisen at the historic moment.IETF has advised a lot of service models and mechanism, to satisfy the demand of QoS.
Multiple application and service and broadband multimedia services based on door, being included as the ordinary residence user provides the online game of abundant Video/Audio stream, VOD, video multicast, multimedia interactive, high bandwidth requirements, for the business user provides video conference, long-distance education, VPN, has Leased line that QoS ensures, IPHotel etc., become the important content of broadband operation.
Operator and the user of enterprises and institutions have the higher degree of awareness to ethernet technology and end-to-end ethernet technology.Ethernet technology becomes one of major technique of building unification of three nets, metropolitan area network future, and Ethernet service will have great development in the future market.
At these business users, VPN/VPDN (Virtual Private Network/VPDN) the special line scheme of V-Switch (empty exchange), GRE (Data Relay Entity), L2TP (Level 2 Tunnel Protocol), MPLS multiple modes such as (multiprotocol label switching) has been proposed at present.
IVS (Intelligent V-Switch; the empty exchange of intelligence) technology is mainly used in to set up and stablizes; practical; economic operation level Metro Ethernet; can realize that QoS guarantees; network security protection; functions such as carrier-class network operation and management; possesses user management based on number; certain mobility; the core business managerial abilities such as centralized management that professional open management is chargeed; provide and comprise intelligent two laminar flow amounts scheduling; the LAN special line; professional and service such as IP flow planning; the present deficiency of network on pure two layers of ability filled up in the appearance of IVS, and the construction of new period metropolitan area network is had important effect.
The V-Switch architecture possesses exchange of perfect ethernet vlan and scheduling feature, the means of service dispatching and foundation, adjustment flexibly, and abundant, extendible two layer service providing capabilities, perfect oam instrument and information.
The logical level of V-Switch system and functional mode are as shown in Figure 1.
Among Fig. 1, the V-Switch system is divided into three layers: the V-Switch service control layer, V-Switch connects key-course, V-Switch bearing capacity layer.
V-Switch connects key-course and safeguards exchange resource among the DRE, as exchange resources such as equipment, interface, link, VLAN, the V-Switch that receives V-Switch service control layer SCR (V-Switch operation controlling entity) sets up request, for connecting, this V-Switch selects service flow path, distribute bandwidth and VLAN resource, and control information is issued on DRE (Data Relay Entity) equipment of Business Stream process.
DRE is in V-Switch bearing capacity layer, and DRE connects the VLAN exchange table entries that key-course is provided with according to V-Switch, finishes the Business Stream of ethernet frame format is transmitted.
The content of VLAN exchange table entries is as shown in table 1.
Table 1
| Parameter | Parameter declaration | |
| 1 | Interface 1 | Business Stream is transmitted interface 1, as GE 1/0/0 |
| 2 | vlan id 1 | The VLAN ID that Business Stream carries in the ethernet frame format on interface 1 |
| 3 | Interface 2 | Business Stream is transmitted interface 2, as GE 1/0/1 |
| 4 | vlan id 2 | The VLAN ID that Business Stream carries in the ethernet frame format on interface 2 |
| 5 | Bandwidth | The Business Stream bandwidth constraints |
| 5.1 | Up maximum bandwidth | Business Stream up (receive from interface 1, send) maximum bandwidth from interface 2 |
| 5.2 | Descending maximum bandwidth | Business Stream descending (receive from interface 2, send) maximum bandwidth from interface 1 |
| 6 | Qos parameter | The requirement of Business Stream qos parameter |
| 6.1 | Postpone | |
| 6.2 | Delay jitter | |
| 6.3 | Packet loss |
The route foundation that DRE transmits as Business Stream with the VLAN swap table.DRE is according to the VLAN swap table to the repeating process of traffic data as shown in Figure 2:
Among Fig. 2, the DRE in the V-Switch territory comprises: edge DRE and middle DRE.Edge DRE is the fringe node in V--Switch territory, is connected with the access user, and middle DRE is connected with the access user by edge DRE.Edge DRE and middle DRE only support the exchange of " interface+Vlan ", when as DRE the ethernet frame of the vlan id 1 that receives in the interface 1 being sent to interface 2, convert vlan id 1 to vlan id 2; When sending to interface 1 with the ethernet frame of the vlan id 2 that receives in the interface 2, DRE converts vlan id 2 to vlan id 1.
By above-mentioned forwarding form, in whole network, can set up the Virtual Channel of a VLAN, this Virtual Channel can be described as: (equipment 1, interface 1, vlan id 1)-(equipment 1, interface 2, vlan id 2)-(equipment 2, interface 3, vlan id 2)-(equipment 2, interface 1, vlan id 3) ...
When V-Switch carrying Ether frame, the edge DRE of access Ether frame must be different from " interface+Vlan " of the carrying ethernet frame that user side receives, in accompanying drawing 3, if MAC1 needs while and MAC2, MAC3, MAC4 communication, the V-Switch territory need be set up the Virtual Channel of three V-Switch for these three Business Streams, and " interface+Vlan " of the Ether frame received from user side of the edge DRE that inserts MAC1 must be different, like this, can exchange on the different V-Switch Virtual Channels.
From top description as can be known, when V-Switch carrying Ether frame, when realizing point to multiple spot professional, requirement to user side equipment is very high, if user side equipment is three layers of routing device, then require these three layers of routing devices that each possible target MAC (Media Access Control) address is set up independently route, walk different outgoing interfaces; If user side equipment is two layers of routing device, then require it to walk different " interface+VLAN " and transmit, this is impossible accomplish in actual networking, makes V-Switch have defective when the carrying Ether frame.
Summary of the invention
The objective of the invention is to, a kind of virtual exchange access method based on Ether frame, device and virtual exchange system are provided, support the void exchange of Ether frame to insert by making virtual switch technology, enriched the cut-in method of empty exchange, improved the edge DRE of virtual switch technology access capability, expanded the range of application of virtual switch technology.
For achieving the above object, a kind of virtual exchange access method based on Ether frame provided by the invention comprises:
A, set up the corresponding relation of ether layer address information and virtual exchange channel;
B, determine the virtual exchange channel of this Ether frame correspondence according to the ether layer address information of Ether frame, described corresponding relation;
C, carry out the transmission of Ether frame according to the virtual exchange channel of described Ether frame correspondence.
Described step a specifically comprises:
Set up the corresponding relation of target MAC (Media Access Control) address information and interface, VLAN sign; Or
Set up the corresponding relation of target MAC (Media Access Control) address information, source MAC address information and interface, VLAN sign.
Described step b specifically comprises:
The ether layer of ingress edge Data Relay Entity is determined the interface and the VLAN sign of this Ether frame correspondence according to the target MAC (Media Access Control) address information of the Ether frame of the empty switching domain of described corresponding relation, access or target MAC (Media Access Control) address, source MAC address information.
Described step c specifically comprises:
The ether layer of ingress edge Data Relay Entity encapsulates this Ether frame according to the interface of described Ether frame correspondence, VLAN sign and transmits.
Described encapsulation comprises: the 802.1Q encapsulation.
Described step c also comprises:
The ether layer of intermediate data Delivery Function transmits the Ether frame in the empty switching domain of its reception according to the VLAN swap table.
Described step c also comprises:
The ether layer that Ether frame is transferred the outlet edge Data Relay Entity of empty switching domain receives the Ether frame that transmission comes in the empty switching domain, and transmits according to the target MAC (Media Access Control) address of this Ether frame.
Void exchange access device based on Ether frame provided by the invention comprises:
Memory module: the corresponding relation of storage ether layer address information and virtual exchange channel;
Determine the virtual exchange channel module: receive the Ether frame that inserts empty switching domain, and determine the virtual exchange channel of this Ether frame correspondence according to the ether layer address information of carrying in stored relation, the described Ether frame in the memory module;
Encapsulate forwarded module: according to determining that the virtual exchange channel that the virtual exchange channel module is determined transmits described Ether frame encapsulation back.
The present invention also provides a kind of virtual exchange system, comprising: ingress edge Data Relay Entity, outlet edge Data Relay Entity;
Described ingress edge Data Relay Entity: determine the virtual exchange channel that this Ether frame is corresponding according to the corresponding relation of ether layer address information and virtual exchange channel, the ether layer address information that inserts the Ether frame of empty switching domain, and with after the described Ether frame encapsulation, transmission;
The outlet edge Data Relay Entity: the Ether frame that transmission in the empty switching domain is next transmits according to the target MAC (Media Access Control) address of its carrying.
Described ingress edge Data Relay Entity comprises:
Memory module: the corresponding relation of storage ether layer address information and virtual exchange channel;
Determine the virtual exchange channel module: receive the Ether frame that inserts empty switching domain, and determine the virtual exchange channel of this Ether frame correspondence according to the ether layer address information of carrying in stored relation, the described Ether frame in the memory module;
Encapsulate forwarded module: according to determining that the virtual exchange channel that the virtual exchange channel module is determined transmits described Ether frame encapsulation back.
Described system also comprises: at least one intermediate data Delivery Function;
Intermediate data Delivery Function: the Ether frame that empty switching domain transmission comes is transferred to other intermediate data Delivery Function or outlet edge Data Relay Entity according to the VLAN swap table.
Description by technique scheme as can be known, the present invention provides a kind of new virtual exchange access method for Ether frame, by setting up the corresponding relation of ether layer address information and virtual exchange channel, make ingress edge DRE can directly determine the virtual exchange channel of Ether frame correspondence according to the address information of Ether frame, make V-Switch when the carrying Ether frame, " interface+VLAN " that can not require ethernet frame must be different, thereby make and insert by same interface or same " interface+VLAN ", Ether frame with different ether layer address information can enrich virtual exchange access method by different " interface+VLAN " transmission; Outlet edge DRE of the present invention can transmit the Ether frame that empty switching domain transmission comes according to the target MAC (Media Access Control) address of Ether frame; Thereby realized improving the purpose of virtual switch technology access capability, expansion virtual switch technology range of application by technical scheme provided by the invention.
Description of drawings
Fig. 1 is the logical level and the functional mode schematic diagram of V-Switch system;
Fig. 2 is a method schematic diagram of realizing empty exchange in the prior art;
Fig. 3 is based on the virtual exchange access method schematic diagram of Ether frame in the prior art;
Fig. 4 is the virtual exchange access method schematic diagram based on Ether frame of the present invention;
Fig. 5 is that the void exchange based on Ether frame of the present invention inserts the method schematic diagram of realizing ether layer point-to-multipoint service.
Embodiment
The invention provides a kind of new virtual exchange access method, device and virtual exchange system, its core all is by setting up the corresponding relation of ether layer address information and virtual exchange channel, make DRE determine the virtual exchange channel of this Ether frame correspondence, thereby Ether frame can be transmitted according to its corresponding virtual exchange channel according to the address information of Ether frame, above-mentioned corresponding relation.
Based on core concept of the present invention technical scheme provided by the invention is further described below.
Ether layer address information among the present invention can be target MAC (Media Access Control) address information, also can be target MAC (Media Access Control) address information and source MAC address information.So, the corresponding relation of setting up ether layer address information and virtual exchange channel among the present invention is: set up the corresponding relation of target MAC (Media Access Control) address information and interface, VLAN sign, or set up the corresponding relation that target MAC (Media Access Control) address information and source MAC address information and interface, VLAN identify.
Above-mentioned corresponding relation can be stored among the ingress edge DRE.
Be described in detail below in conjunction with the transmission course of 4 pairs of Ether frames of accompanying drawing in empty switching domain.
Among Fig. 4, if stored relation is the corresponding relation of target MAC (Media Access Control) address, source MAC address information and interface, VLAN sign among the ingress edge DRE, then ingress edge DRE ether layer should obtain the target MAC (Media Access Control) address and the source MAC address information of Ether frame, and stored relation among this target MAC (Media Access Control) address and source MAC address information and the ingress edge DRE mated, with interface, the VLAN sign of determining this Ether frame correspondence.If stored relation is the corresponding relation that target MAC (Media Access Control) address information and interface, VLAN identify among the ingress edge DRE, then when Ether frame enters the V-Switch territory, ingress edge DRE ether layer should obtain the target MAC (Media Access Control) address of Ether frame, and stored relation among this target MAC (Media Access Control) address and the ingress edge DRE mated, with interface, the VLAN sign of determining this Ether frame correspondence.
After the interface of having determined this Ether frame correspondence, VLAN sign, ingress edge DRE ether layer carries out the encapsulation of 802.1Q to Ether frame, and identifies transmission according to above-mentioned definite interface, VLAN.
After the ether layer of middle DRE receives the Ether frame of 802.1Q encapsulation, still transmit in the mode of " interface+VLAN " according to the VLAN swap table.
After the ether layer of outlet edge DRE received the Ether frame of 802.1Q encapsulation, the ether layer of outlet edge DRE can be transmitted according to the target MAC (Media Access Control) address of this Ether frame.
Be described in detail below in conjunction with the empty exchange process of setting up session connection between 5 pairs of MAC Address whiles of accompanying drawing and a plurality of MAC Address.
Among Fig. 5, if MAC1 needs simultaneously and MAC2, MAC3, MAC4 communication, three V-Switch passages can be set up for three Ether frame Business Streams in the V-Switch territory.Because the ether layer address information difference of three Ether frame Business Streams that the ingress edge DRE1 that inserts MAC1 receives from user side, as the target MAC (Media Access Control) address difference, target MAC (Media Access Control) address is respectively MAC2, MAC3, MAC4, so, after DRE1 can encapsulate three Ether frame Business Streams respectively according to target MAC (Media Access Control) address or according to target MAC (Media Access Control) address and source MAC etc., exchange in the different V-Switch passages, after being about to three Ether frame Business Stream encapsulation, transfer to DRE2 and DRE4 respectively according to different outgoing interfaces and VLAN sign.
DRE2 is when receiving two Ether frame Business Streams of DRE1 transmission, according to the VLAN swap table one of them Ether frame Business Stream is transferred to DRE3, another one Ether frame Business Stream is sent to MAC2 according to the target MAC (Media Access Control) address of Ether frame or according to target MAC (Media Access Control) address and source MAC with this Ether frame work flow.DRE3 receives the Ether frame Business Stream that the DRE2 transmission comes, and according to the target MAC (Media Access Control) address of Ether frame or according to target MAC (Media Access Control) address and source MAC this Ether frame work flow is sent to MAC3.
DRE4 transmits it to DRE5 according to the VLAN swap table when receiving the Ether frame Business Stream of DRE1 transmission.DRE5 receives the Ether frame Business Stream that the DRE4 transmission comes, and according to the target MAC (Media Access Control) address of Ether frame or according to target MAC (Media Access Control) address and source MAC this Ether frame work flow is sent to MAC4.
Thereby finished the empty exchange process of setting up session connection between a MAC Address while and a plurality of MAC Address.
From top description as can be seen, when utilizing virtual exchange access method of the present invention that Ether frame is carried out void exchange access transmission, two layers of user side or three layers of routing device without any specific (special) requirements, are only needed an interface to connect between two layers of user side or three layers of routing device and the ingress edge DRE and get final product.
Virtual exchange system provided by the invention mainly comprises: ingress edge Data Relay Entity and outlet edge Data Relay Entity.Certainly virtual exchange system also can comprise the intermediate data Delivery Function, and the quantity of intermediate data Delivery Function can be one or more.Comprise that with virtual exchange system inlet marginal date Delivery Function, intermediate data Delivery Function and outlet edge Data Relay Entity are that example describes below.
The ether layer address information that the ingress edge Data Relay Entity is mainly used in corresponding relation according to ether layer address information and virtual exchange channel, insert the Ether frame of empty switching domain is determined the virtual exchange channel that this Ether frame is corresponding, and, transfer to intermediate data Delivery Function or outlet edge Data Relay Entity with after this Ether frame encapsulation.
The function of ingress edge Data Relay Entity mainly by memory module, determine that virtual exchange channel module and encapsulate forwarded module realize.
Memory module is mainly used in the corresponding relation of storage ether layer address information and virtual exchange channel, as the corresponding relation of storage purpose MAC Address and interface, VLAN sign etc., certainly, ether layer address information also can be target MAC (Media Access Control) address and source MAC address information etc.
Determine that the virtual exchange channel module is mainly used in the Ether frame that receives the empty switching domain of access, as receive two layers of user side or three layers of Ether frame that the routing devices transmission comes, and the ether layer address information of carrying in the Ether frame according to stored relation, its reception in the memory module determines the virtual exchange channel of this Ether frame correspondence, as interface, the VLAN sign of determining this Ether frame correspondence according to the target MAC (Media Access Control) address of Ether frame.
The encapsulate forwarded module is mainly used in according to determining and transfers to middle DRE or outlet edge DRE after information such as the definite interface of virtual exchange channel module, VLAN sign are with this Ether frame encapsulation.
The intermediate data Delivery Function is mainly used in encapsulate forwarded module that receives ingress edge DRE or the Ether frame that DRE transmission comes in the middle of other, and according to the VLAN swap table Ether frame of its reception is transferred to other intermediate data Delivery Function or outlet edge Data Relay Entity.
The outlet edge Data Relay Entity is mainly used in Ether frame that the transmission of ingress edge Data Relay Entity or intermediate data Delivery Function is come and transmits according to the target MAC (Media Access Control) address of its carrying.
Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, and the claim of application documents of the present invention comprises these distortion and variation.
Claims (11)
1, a kind of virtual exchange access method based on Ether frame is characterized in that, comprising:
A, set up the corresponding relation of ether layer address information and virtual exchange channel;
B, determine the virtual exchange channel of this Ether frame correspondence according to the ether layer address information of Ether frame, described corresponding relation;
C, carry out the transmission of Ether frame according to the virtual exchange channel of described Ether frame correspondence.
2, a kind of virtual exchange access method based on Ether frame as claimed in claim 1 is characterized in that described step a specifically comprises:
Set up the corresponding relation of target MAC (Media Access Control) address information and interface, VLAN sign; Or
Set up the corresponding relation of target MAC (Media Access Control) address information, source MAC address information and interface, VLAN sign.
3, a kind of virtual exchange access method based on Ether frame as claimed in claim 2 is characterized in that described step b specifically comprises:
The ether layer of ingress edge Data Relay Entity is determined the interface and the VLAN sign of this Ether frame correspondence according to the target MAC (Media Access Control) address information of the Ether frame of the empty switching domain of described corresponding relation, access or target MAC (Media Access Control) address, source MAC address information.
4, a kind of virtual exchange access method based on Ether frame as claimed in claim 3 is characterized in that described step c specifically comprises:
The ether layer of ingress edge Data Relay Entity encapsulates this Ether frame according to the interface of described Ether frame correspondence, VLAN sign and transmits.
5, a kind of virtual exchange access method based on Ether frame as claimed in claim 4 is characterized in that described encapsulation comprises: the 802.1Q encapsulation.
6, a kind of virtual exchange access method based on Ether frame as claimed in claim 4 is characterized in that described step c also comprises:
The ether layer of intermediate data Delivery Function transmits the Ether frame in the empty switching domain of its reception according to the VLAN swap table.
7, a kind of virtual exchange access method based on Ether frame as claimed in claim 4 is characterized in that described step c also comprises:
The ether layer that Ether frame is transferred the outlet edge Data Relay Entity of empty switching domain receives the Ether frame that transmission comes in the empty switching domain, and transmits according to the target MAC (Media Access Control) address of this Ether frame.
8, a kind of void exchange access device based on Ether frame is characterized in that, comprising:
Memory module: the corresponding relation of storage ether layer address information and virtual exchange channel;
Determine the virtual exchange channel module: receive the Ether frame that inserts empty switching domain, and determine the virtual exchange channel of this Ether frame correspondence according to the ether layer address information of carrying in stored relation, the described Ether frame in the memory module;
Encapsulate forwarded module: according to determining that the virtual exchange channel that the virtual exchange channel module is determined transmits described Ether frame encapsulation back.
9, a kind of virtual exchange system is characterized in that, comprising: ingress edge Data Relay Entity, outlet edge Data Relay Entity;
Described ingress edge Data Relay Entity: determine the virtual exchange channel that this Ether frame is corresponding according to the corresponding relation of ether layer address information and virtual exchange channel, the ether layer address information that inserts the Ether frame of empty switching domain, and with after the described Ether frame encapsulation, transmission;
The outlet edge Data Relay Entity: the Ether frame that transmission in the empty switching domain is next transmits according to the target MAC (Media Access Control) address of its carrying.
10, a kind of virtual exchange system as claimed in claim 9 is characterized in that, described ingress edge Data Relay Entity comprises:
Memory module: the corresponding relation of storage ether layer address information and virtual exchange channel;
Determine the virtual exchange channel module: receive the Ether frame that inserts empty switching domain, and determine the virtual exchange channel of this Ether frame correspondence according to the ether layer address information of carrying in stored relation, the described Ether frame in the memory module;
Encapsulate forwarded module: according to determining that the virtual exchange channel that the virtual exchange channel module is determined transmits described Ether frame encapsulation back.
11, a kind of virtual exchange system as claimed in claim 9 is characterized in that, described system also comprises: at least one intermediate data Delivery Function;
Intermediate data Delivery Function: the Ether frame that empty switching domain transmission comes is transferred to other intermediate data Delivery Function or outlet edge Data Relay Entity according to the VLAN swap table.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100839737A CN1870577A (en) | 2005-07-15 | 2005-07-15 | Virtual exchange access method, device and virtual exchange system based on Ethernet frame |
| PCT/CN2006/001654 WO2007009352A1 (en) | 2005-07-15 | 2006-07-12 | A v-switch access method, apparatus and v-switch system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100839737A CN1870577A (en) | 2005-07-15 | 2005-07-15 | Virtual exchange access method, device and virtual exchange system based on Ethernet frame |
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| CN1870577A true CN1870577A (en) | 2006-11-29 |
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| CNA2005100839737A Pending CN1870577A (en) | 2005-07-15 | 2005-07-15 | Virtual exchange access method, device and virtual exchange system based on Ethernet frame |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103731349A (en) * | 2012-10-16 | 2014-04-16 | 杭州华三通信技术有限公司 | Method for conducting Ethernet virtualized message transmission between interconnection neighbors and edge device |
| CN104243260A (en) * | 2013-06-21 | 2014-12-24 | 杭州华三通信技术有限公司 | Ethernet virtualization interconnection (EVI) network interconnection method and edge devices |
-
2005
- 2005-07-15 CN CNA2005100839737A patent/CN1870577A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103731349A (en) * | 2012-10-16 | 2014-04-16 | 杭州华三通信技术有限公司 | Method for conducting Ethernet virtualized message transmission between interconnection neighbors and edge device |
| WO2014059814A1 (en) * | 2012-10-16 | 2014-04-24 | Hangzhou H3C Technologies Co., Ltd. | Message forwarding between geographically dispersed network sites |
| CN104243260A (en) * | 2013-06-21 | 2014-12-24 | 杭州华三通信技术有限公司 | Ethernet virtualization interconnection (EVI) network interconnection method and edge devices |
| CN104243260B (en) * | 2013-06-21 | 2018-06-15 | 新华三技术有限公司 | Ethernet virtualization internet network interconnecting method and edge device |
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