CN108737454A - Method and apparatus for carrying out synchronizing information between virtual gateway server - Google Patents

Method and apparatus for carrying out synchronizing information between virtual gateway server Download PDF

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Publication number
CN108737454A
CN108737454A CN201710239673.6A CN201710239673A CN108737454A CN 108737454 A CN108737454 A CN 108737454A CN 201710239673 A CN201710239673 A CN 201710239673A CN 108737454 A CN108737454 A CN 108737454A
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virtual gateway
gateway server
server
information
tlv
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CN108737454B (en
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张立新
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Nokia Shanghai Bell Co Ltd
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Nokia Shanghai Bell Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1095—Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0893—Assignment of logical groups to network elements

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Computer And Data Communications (AREA)

Abstract

The method and apparatus that embodiment of the disclosure discloses the synchronizing information for virtual gateway server in communication network or other virtual gateway trustship facilities (collectively referred to herein as virtual gateway server).An aspect of this disclosure provides the method at the first virtual gateway server in a communication network, and this method includes：Virtual gateway synchronous applications are established with the second virtual gateway server in the communication network to connect, the second virtual gateway server is physically isolated to provide redundancy protecting with the first virtual gateway server；And by the synchronizing information of trustship at the first virtual gateway server to the second virtual gateway server, which includes at least one of the following：Wide area network parameters, local network parameters, dynamic host configuration protocol (DHCP) configuration, dhcp state, name server local state, network address translation configuration, port mapping state, application layer gateway configuration and firewall configuration.Embodiment of the disclosure also provides method and corresponding equipment in the virtual server of opposite end.

Description

Method and apparatus for carrying out synchronizing information between virtual gateway server
Technical field
Embodiment of the disclosure relates generally to the communications field, and in particular it relates to one kind between virtual gateway server into The method and apparatus that row information synchronizes.
Background technology
Residential gateway (NERG) solution party of network enhancing is proposed in the technical report TR-317 that Broadband Forum (BBF) is formulated The partial function of residential gateway is transferred in the network of operator and executes by case.NERG is conducive to operator and provides and update attached Add business, such as personalized service, the multimedia service of wired home and enhancing.
Using NERG, some functions for traditionally being provided by residential gateway now will equipment (such as bridge joint house net at the scene Close (BRG)) it is distributed between network-based component.The wherein network-based component is referred to as virtual gateway (vG).Virtually The trustship facility of gateway, referred to herein as virtual gateway server are network elements crucial in NERG solutions.
Invention content
Generally, the method and apparatus that embodiment of the disclosure proposes the synchronizing information for virtual gateway server, so as to In the redundancy/protection mechanism for realizing virtual gateway server.Embodiment of the disclosure can be used for NERG solutions, but not It is limited to the application scenarios, but the communication system there are similar problems can be applied to.
In the disclosure in a first aspect, providing a kind of method at the first virtual gateway server in a communication network.The party Method includes：Virtual gateway synchronous applications are established with the second virtual gateway server in communication network to connect, second virtual net It closes server and the first virtual gateway server is physically isolated for providing redundancy protecting；And it is virtual by described first For the synchronizing information of trustship to the second virtual gateway server, described information includes at least one of following at gateway server： Wide area network (WAN) parameter, LAN (LAN) parameter, dynamic host configuration protocol (DHCP) configuration, dhcp state, domain name service Device (DNS) local state, network address translation (NAT) configuration, port mapping state, application layer gateway (ALG) configuration and fire prevention Wall configures.
In one embodiment, several active virtual gateways of the first virtual gateway trust server, and described second is virtual Several standby virtual gateways of gateway server trustship.
In another embodiment, by the synchronizing information of trustship at the first virtual gateway server to second virtual gateway Server may include：Determine whether the information of trustship at the first virtual gateway server is changed；And in response to true Determine described information to be changed, described information is synchronized to the second virtual gateway server.
In another embodiment, by the synchronizing information of trustship at the first virtual gateway server to second virtual gateway Server may include it is following in one：By sending synchronizing information type lengths values to the second virtual gateway server (TLV) come to the second virtual gateway server sync described information；By being sent to the second virtual gateway server Information increases the part that TLV to increase to the second virtual gateway server described information；By virtual to described second Gateway server sends the part that information removing TLV to remove described information from the second virtual gateway server；And Change TLV by sending information to the second virtual gateway server come to described in the second virtual gateway server sync The part of information being changed.
In some embodiments, by the synchronizing information of trustship at the first virtual gateway server to second virtual gateway Server may include：Synchronizing information request is received from the second virtual gateway server；And it is described in response to receiving Described information is synchronized to the second virtual gateway server by synchronization request.In one embodiment, virtual from described second Gateway server receives synchronizing information request：Synchronization request type in redundancy group (RG) application data message is long The synchronization request is received in angle value (TLV), the synchronization request TLV includes the request for synchronization request described in unique mark The instruction of identifier and the type for asked synchronous information；It, will and wherein in response to receiving the synchronization request Described information is synchronized to the second virtual gateway server：First is sent to the second virtual gateway server Message, the first message include the request identifier and at least one of the following：Indicate start information synchronizes the One mark, and instruction described information is the same as the second mark of the end of the step.In a further embodiment, for asking synchronization The instruction of the type of information can be bit map, the information of the bit instruction respective type in the bit map Whether it is requested and synchronizes.
In some embodiments, virtual gateway synchronous applications are established and are connect with the second virtual gateway server and may include： Include the redundancy group (RG) of across machine frame virtual gateway connection type length value (TLV) to the second virtual gateway server transmission Connection message, across the machine frame virtual gateway connection TLV includes type field, and the type field is configured to corresponding type Value is to indicate that establishing across machine frame virtual gateway synchronous applications with the second virtual gateway server connect.
In another embodiment, by the synchronizing information of trustship at the first virtual gateway server to second virtual gateway Server may include：Redundancy group (RG) application data message, the RG applications are sent to the second virtual gateway server Data-message includes carrying the type lengths values (TLV) for the described information to be synchronized, and the TLV includes type field, The type field is configured to corresponding types value to indicate the type for the described information to be synchronized.
In some embodiments, WAN parameters may include at least one of following：WAN media for hosted virtual gateway The parameter of the access control address (MAC) and WAN Internet Protocols (IP) stack for hosted virtual gateway.Another In a little embodiments, LAN parameters include at least one of following：The media access control of LAN port for hosted virtual gateway Make Internet Protocol (IP) configuration of the address (MAC) and the ports LAN for hosted virtual gateway.
In another embodiment, DHCP configurations may include at least one of following：Instruction that whether Dynamic Host Configuration Protocol server is activated, because The instruction of special fidonetFido (IP) address pool, IP address rental period, gateway ip address, subnet mask, primary dns server IP Location and auxiliary DNS server ip address.In another embodiment, dhcp state may include the Internet Protocol of Dynamic Host Configuration Protocol server (IP) allocation tables, and the list item of the IP address allocation table of the Dynamic Host Configuration Protocol server includes IP address, media access control (MAC) address and remaining rental period.
In one embodiment, the locals DNS state may include the complete local name table of dns server, and the DNS The complete local name table of server includes local device mark and the address corresponding Internet Protocol (IP).
In another embodiment, NAT configurations may include at least one of following：Instruction that whether nat feature is activated, port control What whether instruction that whether agreement (PCP) processed is activated, NAT port mappings agreement (NAT-PMP) were activated indicate, it is general i.e. The instruction whether plug-and-play the Internet gateway device control protocol (UPnP-IGD) is activated.In another embodiment, port is reflected The state of penetrating may include at least one of following：The address internal internet protocol (IP), outside about hosted virtual gateway IP address, inside end slogan, outer end slogan, agreement and remaining life cycle.
In some embodiments, ALG configurations may include the information whether at least one of instruction or less is activated：Point-to-point tunnel At the beginning of agreement (PPTP), second layer tunnel agreement (L2TP), Internet Protocol Security (IPsec), File Transfer Protocol (FTP), session Beginning agreement (SIP) and real time streaming transport protocol (RTSP).
In another embodiment, firewall configuration can indicate the protection class of fire wall, the protection class may include for Close, be high, in or it is low.
In another embodiment, this method can also include：Message is disconnected to the second virtual gateway server transmission. In a further embodiment, it may include instruction the reason of disconnecting to disconnect message
In the second aspect of the disclosure, a kind of method implemented at the second virtual gateway server in a communication network is provided, This method includes：Virtual gateway synchronous applications are established with the first virtual gateway server in communication network to connect, described second Virtual gateway detaches to provide redundancy protecting with the first virtual gateway server；And from the first virtual gateway service Device receive at the first virtual gateway server trustship information for the first virtual gateway server sync, Described information includes at least one of following：WAN parameters, LAN parameters, DHCP configurations, dhcp state, the locals DNS state, NAT match It sets, port mapping state, ALG configurations and firewall configuration.
In the third aspect of the disclosure, a kind of device is provided, which includes controller and memory, and the memory includes can The instruction executed by the controller, thus described device be operating as executing any described in the first aspect according to the disclosure Method.
In the fourth aspect of the disclosure, a kind of device is provided, which includes controller and memory, and the memory includes can The instruction executed by the controller, thus described device be operating as executing any described in the second aspect according to the disclosure Method.
Using embodiment of the disclosure, redundant virtual gateway server can be provided in a network, and realizes that virtual gateway takes Synchronizing information between business device improves network reliability and improvement in order to realize redundancy/protection mechanism of virtual gateway server User experience.
Description of the drawings
By reference to the described in detail below of attached drawing, the above and other aspect, feature and the benefit of the various embodiments of the disclosure It will be apparent, similar reference numeral or letter are for referring to similar or equivalent element in attached drawing.Attached drawing is shown It to promote to more fully understand embodiment of the disclosure, and is not drawn necessarily to scale, in the accompanying drawings：
Fig. 1 shows the schematic diagram for the network environment that the embodiment of the present disclosure may be implemented wherein；
Fig. 2 shows the process examples that virtual gateway server sync is executed according to one embodiment of the disclosure；
Fig. 3 A, 3C, 3D show the example for the method that one embodiment according to the disclosure executes in virtual gateway server Flow chart；
Fig. 3 B show the TLV's due to establishing connection sent by virtual gateway server according to one embodiment of the disclosure Example；
Fig. 4 A-4B show the example for the TLV of synchronization request according to one embodiment of the disclosure；
Fig. 5 shows the example for the TLV of synchrodata according to one embodiment of the disclosure；
Fig. 6 A-6S, which are shown, to be used to synchronize different types of information between virtual gateway server in accordance with an embodiment of the present disclosure The example of TLV；
Fig. 7 A-7B show the TLV for disconnecting the connection between virtual gateway server according to one embodiment of the disclosure Example；
Fig. 8 shows the example flow diagram of method of the one embodiment according to the disclosure at another virtual gateway server；
Fig. 9 shows the block diagram of the device according to some embodiments of the present disclosure；
Figure 10 shows the block diagram of another device according to some embodiments of the present disclosure；And
Figure 11 shows the block diagram of the equipment of some embodiments according to the disclosure.
Specific implementation mode
Hereinafter, the principle and spirit of the disclosure will be described with reference to illustrative examples.It should be appreciated that all these embodiments Only those skilled in the art more fully understand and further implement the disclosure and provide, rather than the model for limiting the disclosure It encloses.For example, the feature that the part as one embodiment shows or describes can be used together with another embodiment to produce Another raw embodiment.For the sake of clarity, some features of the practical realization described in the present specification can be omitted.
It can to the reference instruction described embodiment of " one embodiment ", " embodiment ", " example embodiment " etc. in specification To include a particular feature, structure, or characteristic, but need not embodiment include each a particular feature, structure, or characteristic.In addition, Such phrase is not necessarily referring to identical embodiment.In addition, when describing a particular feature, structure, or characteristic in conjunction with the embodiments, Think to realize that such feature, structure or characteristic are in the knowledge of those skilled in the range in conjunction with other embodiments , regardless of whether being explicitly described.
It will be appreciated that though term " first " and " second " etc. can be used for describing various elements herein, but these yuan Part is not answered limited by these terms.These terms are only used to distinguish an element with another element.For example, not taking off In the case of range from example embodiment, first element can be referred to as second element, and similarly, and second element can be with It is referred to as first element.As used herein term "and/or" includes appointing for one or more associated entries listed Meaning and all combinations.
Term as used herein is used only for the purpose of describing specific embodiments, and is not intended to be limited to example embodiment.Such as this Singulative used in text " one ", "one" and "the" are intended to also include plural form, unless the context clearly indicates otherwise. It will also be understood that as used herein, the terms "include", "comprise", specify the feature, element and/component etc. at " having " Presence, but be not excluded for the presence or addition of one or more of the other feature, element, component and/or a combination thereof.
All terms used herein have is generally understood identical meaning with disclosure those of ordinary skill in the art, Unless otherwise expressly defined.
Embodiment of the disclosure can be for example, implement in NERG frameworks.As previously mentioned, using NERG, traditionally by house net Closing some functions of being provided will be distributed between equipment (such as BRG) and network-based component at the scene now.Wherein it is based on The component of network is referred to as virtual gateway.Virtual gateway trustship facility is referred to herein as virtual gateway server, is Crucial network element in NERG.
The disclosure inventors noted that in existing NERG solutions (such as in solution described in TR-317) Redundancy/protection mechanism of virtual gateway server is not accounted for, it is therefore, empty in NERG solutions end to end Quasi- gateway server is at single failure point.In the case of virtual gateway server fail, the internet of a large number of users Access service will be interrupted.Therefore, the disclosure it has been recognised by the inventors that NERG solutions for carrier-class, virtual gateway clothes Redundancy/protection mechanism of business device is necessary.
Embodiment of the disclosure supports the superfluous of virtual gateway server by proposing across machine frame virtual gateway synchronization solutions Remaining protection is improved existing NERG solutions.Currently, NERG solutions do not support any across machine frame virtual net Close server redundancy/protection mechanism.
The schematic diagram for the network environment 100 that embodiment of the disclosure can be implemented within is shown in FIG. 1.As shown, Network environment 100 includes bridge joint residential gateway (BRG) 101, access node (AN) 102,103 He of broadband networks gateway (BNG) 113, virtual gateway server 104 and 114, Ethernet-Aggregation network 110, pseudo-wire (PW) or superposition tunnel 111.Wherein, it connects Ingress is connected to BNG 103 and 113 by Ethernet-Aggregation network 110.BNG 103 and 113 and virtual gateway server 104 and 114 are connected by IP/MPLS or pure IP aggregation networks 120.Virtual gateway server 104 and 114 is connected to IP Core net 130.Pseudo-wire or superposition tunnel 111 can be the network virtualizations on MPLS pseudo-wires or any kind of layer 3 (NVO3) tunnel, such as virtual expansible LAN tunnel (VxLAN) or the network virtualization using generic route encapsulation (NVGRE) tunnel.
Two kinds of link models for end-to-end NERG solutions, i.e., flat logical subscriber are described in the TR-317 of BBF The LSL models of link (LSL) model and superposition.Shown in Fig. 1 it is the schematic diagram of flat LSL models, but should notes Meaning, embodiment of the disclosure is not limited to the model of Fig. 1, but is applicable in two kinds of link models.
In the disclosure, the virtual gateway server (such as 104 in Fig. 1 and 114) of multiple (such as a pair of) redundancies is referred to as Redundancy group.In some embodiments of the present disclosure propose for across machine frame virtual gateway server redundancy/protection solution across Machine frame virtual gateway synchronization mechanism/agreement.
In some embodiments, across the machine frame virtual gateway synchronous protocol proposed can be across machine frame communication protocol (ICCP) Extension.Specifically, new ICCP applications, i.e., across machine frame virtual gateway synchronous protocol application are proposed in some embodiments.Into In the embodiment of one step, also define one group of new MC-vG (across machine frame virtual gateway) application type length value (TLV), with Configuration and/or the state of hosted redundant virtual gateway are synchronized between the redundant virtual gateway server being physically isolated Information.
In addition, complete virtual gateway server redundancy/protection solution may include two parts.First part is in physics Configuration and the status information of hosted redundant virtual gateway are synchronized between the virtual gateway server of upper separation.The part is for example It can carry out in accordance with an embodiment of the present disclosure.Virtual gateway server and pseudo-wire and/or superposition tunnel of the second part from redundancy Middle selection active members, and backup member is switched in failure.The part is properly termed as across machine frame selection/handoff protocol, And the part can take any of or exploitation in the future technology to carry out, and the disclosure is limited not to this.Example Such as, across machine frame selection/handoff protocol can reuse existing standard mechanism (such as across the machine frame pseudo-wire redundancy based on ICCP agreements Mechanism (RFC 7225, RFC 6718, and RFC 6870) or the virtual private LAN service based on bgp protocol (VPLS) return connection mechanism (see, for example, draft-ietf-bess-vpls-multihoming) more.That is, the disclosure Across the machine frame virtual gateway synchronization mechanism of middle proposition can be used in combination with any suitable across machine frame selection/handoff protocol, with Support across the machine frame virtual gateway server redundancy protection in NERG solutions.
The showing for the synchronizing information between virtual gateway server of one embodiment according to the disclosure is shown in FIG. 2 Example process.In this example it is assumed that virtual gateway server 104 and 114 is respectively that active virtual gateway server and backup are empty Quasi- gateway server.It is connected as shown in Fig. 2, virtual gateway server 104 establishes 210 virtual gateway synchronous applications with 114；And The information of trustship is synchronized 220 and arrives virtual gateway server 114 at virtual gateway server 104.In some embodiments, the letter Breath synchronous 220 can be that virtual gateway server 104 is unsolicited and actively initiate.In further embodiments, in the letter Before breath synchronous 220, virtual gateway server 114 can send the request of 215 synchronizing informations to virtual gateway server 104.
The method 300 executed at the first virtual gateway server below in conjunction with attached drawing 3A descriptions.The first virtual gateway service Device can be, such as, but not limited to, virtual gateway server 104 shown in Fig. 1 or 114 or with any of similar functions Other network equipments.For the ease of discussing, below with reference to virtual gateway server 104 and the network rings with reference to described in figure 1 Border 100 describes method 300.
As shown in Figure 3A, in block 310, the first virtual gateway server 104 takes with the second virtual gateway in communication network 100 Business device (such as 114 in Fig. 1) establishes the connection of virtual gateway synchronous applications.Physically separated first in the communication network 100 Virtual gateway server 104 and the second virtual gateway server 114 are used to provide for redundancy protecting.This redundant virtual gateway Server architecture is different from existing NERG solutions.
As an example, not a limit, in block 310, the first virtual gateway server 104 can be by the second virtual gateway service Device 114 sends connection message or receives connection message from the second virtual gateway server 114 and answered to establish virtual gateway synchronization With connection.In one embodiment, which can be ICCP " RG connections " message.It can be wrapped in the RG connection messages Include across machine frame virtual gateway (MC-vG) connection TLV.MC-vG connections TLV may include type field, and the type field Be configured to corresponding types value with indicate with the second virtual gateway server 114 establish across machine frame virtual gateway synchronization answer With connection.
The format sample of MC-vG connections TLV 301 is shown in figure 3b.According to one embodiment of the disclosure, in the TLV Each field can be defined as shown in table 1.
Table 1
Now turn to Fig. 3 A.In block 320, the first virtual gateway 104 is by the synchronizing information of its trustship to second virtual gateway Server.As an example, not a limit, which may include at least one of the following：Wide area network (WAN) parameter, LAN (LAN) parameter, dynamic host configuration protocol (DHCP) configuration, dhcp state, name server (DNS) local state, network Convert (NAT) configuration, port mapping state, application layer gateway (ALG) configuration and firewall configuration in location.
In some embodiments, the synchronizing information in block 320 can be that the first virtual gateway server 104 is actively initiated.Example Such as, in the example embodiment 3201 of the block 320 shown in Fig. 3 C, the first virtual gateway server 104 can be true in block 321 Whether the information of trustship is changed at the fixed first virtual gateway server；And in block 322, in response to determining described information It is changed, described information is synchronized to the second virtual gateway server.
Alternatively, or additionally, in another embodiment, in block 320, the first virtual gateway server 104 can be based on opposite end The request of virtual gateway server 114 and the synchronization into row information.For example, another example in the block 320 shown in Fig. 3 D is implemented In mode 3202, in block 323, the first virtual gateway server 104 receives synchronizing information from the second virtual gateway server 114 Request；And in block 324, in response to receiving the synchronization request, by synchronizing information to the second virtual gateway server 114.It should Operation is similar with process 215 and 220 shown in Fig. 2.
As an example, not a limit, in one embodiment, which can be included in the form of MC-vG synchronization requests TLV In " RG applications data " message.The format sample of MC-vG synchronization requests TLV is shown in Figure 4 A.
U, F, length in MC-vG synchronization requests TLV, the meaning of type are identical as shown in table 1, therefore repeat no more.It is different , for the TLV, type field can be set to another kind of offset (for example, type codes -20) for indicating the MC- VG applies retransmits the application of configuration and/or status information to synchronize for a kind of reciprocity virtual gateway server of request.
In addition, the TLV may include the request identifier for the unique mark synchronization request.For example, in the example of Fig. 4 A, The request identifier is " request number " field 411, and it includes the numbers not being assigned for the unique mark request.It should Number can for example be used to match the response for the request.In one embodiment, " request number " value " 0 " is retained Synchronization for indicating to be not based on request, and therefore do not used in the MC-vG synchronization requests TLV based on request.
Another field " synchronization request mark " 412 in Fig. 4 A is used to indicate the type for asking synchronous information.Show at one In example, it may include 2 bytes to be somebody's turn to do " synchronization request mark " 412.As an example, each bit in wherein effective 9 bits It can indicate a type of the configuration and/or status information that virtual gateway server asks its reciprocity virtual gateway server to send Type.For example, format as shown in Figure 4 B can be had by being somebody's turn to do " synchronization request mark " field.By the way that corresponding bit value is arranged For for example, " 1 ", can indicate that the information of respective type is required to synchronize.For example, if virtual gateway server request for " WAN parameters " bit in Fig. 4 B is then set as 1 by the synchronization of WAN parameter informations；Otherwise it is set as 0.In Fig. 4 B the 14th, 13,12,11,10,9,8,7 bits can be by similar setting, separately to indicate LAN parameter informations, DHCP configuration informations, Dhcp state information, DNS local state informations, NAT configuration informations, port mapping status information, ALG configuration informations and fire prevention Whether wall configuration information is requested to synchronize." reservation " bit (i.e. bit 0 to 6) in Fig. 4 B is not used by, and can be set It is set to 0.It should be noted that in another embodiment, some bits in 0 to 6 bits could be used to indicate that other information Whether it is required to synchronize.
Fig. 3 D are now turned to, in one embodiment, in block 324, receive the first virtual gateway of MC-vG synchronization requests TLV Server 104 can send MC-vG synchronizing informations in response.The MC-vG synchronizing informations, for example, MC-vG can be used as to synchronize Data TLV is included in RG application data messages.As an example, the first virtual gateway server 104 can use a pair MC-vG synchrodatas TLV defines the MC- for including synchrodata sent as the response for MC-vG synchronization requests TLV VG applications TLV.It can be by the starting of synchrodata or end signal for example, acting the MC-vG synchrodatas TLV defined Notify the second virtual gateway server 114.In addition, MC-vG synchrodatas TLV further includes request identifier, such as " request Number " field is the response to be associated with corresponding synchronization request.
The format sample of MC-vG synchrodatas TLV is shown in FIG. 5.Meaning phase in " request number " field 511 and Fig. 4 A Together, the request number in the MC-vG synchronization requests TLV for asking the synchrodata is uniquely identified.
In some embodiments, other than being used to respond synchronization request, MC-vG synchrodatas TLV can also quilt MC-vG for being not based on request is configured and/or the synchronization of status information.That is, block 322 can also shown in Fig. 3 C It is used for synchronizing information using which.In this case, " request number " field 511 can be set to " 0 ".
As an example, the type field in Fig. 5 in the TLV can be set to type codes 22.In another example, in Fig. 5 The possibility value and meaning of " synchrodata mark " field 512 are as shown in table 2.
Table 2
Value Meaning
0x0000 Synchrodata starts
0x0001 Synchrodata terminates
In some embodiments, no matter synchronization based on request or it is not based on the synchronization of request, synchrodata can pass through A pair of MC-vG synchrodatas TLV as shown in Figure 5 is defined.That is, virtual gateway server can be by MC-vG synchrodatas TLV In " synchrodata mark " field be set as 0x0000 to indicate the beginning of synchrodata, and by the same step numbers of another MC-vG 0x0001 is set as to indicate the end of synchrodata according to " synchrodata mark " field in TLV.
Now turn to Fig. 3 A.In some embodiments, in block 320, the first virtual gateway server 104 can be to the second virtual net It closes server 114 and sends RG application data messages, and the RG application data messages include to carry the TLV for the information to be synchronized. In one example, which includes type field, and the type field is configured to corresponding types value to indicate to synchronize Described information type.
It shows and is used in the attached drawing 6A-6S of the disclosure, such as block 320 in figure 3 a, it is same to carry out different types of information The TLV of step.It should be understood that these TLV are unrestricted only as example and are presented.Shown in the disclosure is not limited to The synchronizing information of type is also not necessarily limited to shown specific signaling format.
Fig. 6 A show the format sample of the MC-vG WAN parameters TLV 610 for synchronizing WAN parameters.Wherein U, F, length and The meaning of type field is identical as shown in table 1, and throughout (including other TLV examples) has phase to these fields Same meaning, therefore for the sake of simplicity, be not repeated to explain hereinafter.In example TLV, type field can be set to, Such as type codes -3, to indicate the type of MC-vG applications or the type for the information to be synchronized.
The meaning of redundancy object identifier (ROID) field 611 in Fig. 6 A can be with it in the 6.1.3 sections of RFC 7275 What is defined is identical.That is, the ROID fields are to uniquely identify the general opaque sentence of shielded redundancy object in redundancy group Handle.In the disclosure, redundancy object, that is, virtual gateway, and ROID can be set to virtual gateway identifier (virtual gateway ID).In one embodiment, which can be encoded with 8 byte signless integers.In another example, 0 value of ROID It can be retained.Throughout (including other TLV examples), the meaning of ROID fields and reserved field is constant, therefore, hereinafter will No longer repeated for each TLV.
In some embodiments, may include at least one of the following by synchronous WAN parameters：For hosted virtual net Address WAN media access controls (MAC) 612 of pass and WAN Internet protocols (IP) stack for hosted virtual gateway Parameter (613-619).
WAN MAC Address field 612 in Fig. 6 A includes the MAC Address of the WAN port of virtual gateway in trust.In Fig. 6 A Shown in WAN IPv4 mode stacks 613, the addresses WAN IPv4 514, WAN IPv4 Address lease times 615, WAN IPv4 subnets Mask 616, the addresses WAN gateway IPv4 617, the addresses primary dns server IPv4 618 and auxiliary dns server IPv4 address fields Value of 619 instructions for the parameter current of the WAN IPv4 storehouses of virtual gateway in trust.WAN IPv4 mode stack fields How the IPv4 storehouses of the WAN port of 613 instruction virtual gateways in trust do not configure.Note that in the TR-317 of BBF, with Too online peer-peer protocol (PPPoE) is no longer regarded as one of the option for WAN IP stack arrangements.Therefore, one In a embodiment, which can be set to, for example, one of following pattern：
1：Static configuration
2：Via the dynamic configuration of DHCPv4
If WAN IPv4 mode stacks are 1 (static configuration), WAN IPv4 Address lease times should be arranged to 0xFFFFFFFF, it is meant that it is never expired, and every other field should include the value of static configuration.
If WAN IPv4 mode stacks be 2 (configurations of DHCPv4 dynamic states), WAN IPv4 Address lease times should by comprising The currently active rental period of the addresses WAN IPv4, and other fields should include the analog value obtained via DHCPv4 agreements.
In some other TLV examples although Fig. 6 A and hereafter using IPv4 stacks parameter as an example, the disclosure reality It applies that example is without being limited thereto, but can be adapted for configuration and the parameter synchronization of other IP protocol stacks (for example, IPv6).
Fig. 6 B show the format sample of the MC-vG LAN parameters TLV 620 for synchronizing LAN parameters.The TLV can also be by It is included in " RG applications data " message of ICCP.In some embodiments, LAN parameters include at least one of the following：With Match in the IP of the MAC Address of the LAN port of hosted virtual gateway and LAN port for hosted virtual gateway It sets.
In the example of 6 b it, type field can be set to, such as type codes -4.LAN MAC Address field packets in figure The MAC Address of LAN port containing virtual gateway in trust.The addresses LAN IPv4 and LAN IPv4 subnet mask fields are equal Include the IPv4 configurations of the LAN port for virtual gateway in trust.
Fig. 6 C show to configure the format sample of TLV 630 for synchronizing the MC-vG Dynamic Host Configuration Protocol server of Dynamic Host Configuration Protocol server configuration.It should TLV may also be included in that in " RG applications data " message of ICCP.
In some embodiments, Dynamic Host Configuration Protocol server configuration may include at least one of the following：Whether Dynamic Host Configuration Protocol server is opened Instruction, the instruction in IP address pond, the IP address rental period, gateway ip address, subnet mask, primary dns server IP address, With auxiliary dns server IP address.
In the example of Fig. 6 C, type field can be set to, such as type codes -4.In addition, Dynamic Host Configuration Protocol server is activated word Section can include Boolean.For example, 1 instruction DHCP servers are activated on virtual gateway, and 0 instruction Dynamic Host Configuration Protocol server exists It is disabled on virtual gateway.
The indication field of IPv4 address pools in Fig. 6 C for example may include that IPv4 address pools start field and IPv4 address pool knots Beam field, to be respectively used to first address and the last one address of the IPv4 address pools that instruction includes.IPv4 address leases Time field can for example indicate the rental period assigned for the addresses IPv4 in seconds.
In some embodiments, the addresses gateway IPv4 in the TLV and subnet mask field include and " MC-vG LAN parameters TLV In " addresses LAN IPv4 " and " LAN IPv4 subnet masks " identical value of field.In addition, the main DNS service in the TLV Device IPv4 address fields include value identical with " addresses the LAN IPv4 " field in " MC-vG LAN parameters TLV ".
In some embodiments, " addresses auxiliary dns server IPv4 " field of the TLV can be set to 0, that is, virtual gateway It is arranged to be used for the default DNS servers of lan device.
Fig. 6 D show the format sample of the MC-vG Dynamic Host Configuration Protocol server states TLV 640 for synchronizing Dynamic Host Configuration Protocol server state.It should TLV may also be included in that in the RG application data messages of ICCP.
In some embodiments, dhcp state includes the IP address allocation table of Dynamic Host Configuration Protocol server, and the Dynamic Host Configuration Protocol server The list item of IP address allocation table includes IP address, MAC Address and remaining rental period.
In embodiment of the disclosure, information (including DHCP status informations) in the block 320 in Fig. 3 A synchronizes and can pass through Different modes carries out.Such as：First virtual gateway server 104 can be by sending to the second virtual gateway server 114 Synchronizing information TLV comes to 114 synchronizing information of the second virtual gateway server；Alternatively, by the second virtual gateway server 114 It sends information and increases the part that TLV to increase to the second virtual gateway server 114 information；Alternatively, by virtual to second Gateway server 114 sends the part that information removing TLV to remove information from the second virtual gateway server 114；Alternatively, Change TLV by sending information to the second virtual gateway server 114 come to 114 synchronizing information of the second virtual gateway server The part being changed.For dhcp state synchronizing information, different synchronizing information modes can for example pass through the son in Fig. 6 D TLV fields 641 are realized.
In some embodiments, which can include one of TLV shown in Fig. 6 E-6G, for different sides Formula synchronizes the IPv4 allocation tables of the Dynamic Host Configuration Protocol server of virtual gateway in trust.
MC-vG Dynamic Host Configuration Protocol server tables in Fig. 6 E, which synchronize TLV 6411, can be used for the Dynamic Host Configuration Protocol server state based on request It is synchronous, and the complete IPv4 allocation tables of Dynamic Host Configuration Protocol server can be synchronized." Dynamic Host Configuration Protocol server entry number in Fig. 6 E Mesh " field indicates the number of the IPv4 allocation tables items of Dynamic Host Configuration Protocol server.Each list item of IPv4 allocation tables, for example, Can include by { addresses IPv4, MAC Address, remaining rental period } triple.What wherein remaining rental period instruction was assigned The remaining effective time of the addresses IPv4.For example, the remaining rental period for the addresses IPv4 being statically configured can be set to 0xFFFFFFFF, with instruction " never expired ".
The format sample of MC-vG Dynamic Host Configuration Protocol server addition list item TLV 6412 is shown in Fig. 6 F.The TLV can be used for non- Dynamic Host Configuration Protocol server state synchronized based on request, and can be used for noticing the Dynamic Host Configuration Protocol server of virtual gateway in trust The addition of the new list item of IPv4 allocation tables.For example, { addresses IPv4, MAC Address, remaining rental period } composition in Fig. 6 F Triple can indicate a new list item.
Show that MC-vG Dynamic Host Configuration Protocol server removes the format sample of list item TLV 6413 in Fig. 6 G.The TLV can be used for non- Dynamic Host Configuration Protocol server state synchronized based on request, and can be used for noticing the Dynamic Host Configuration Protocol server of virtual gateway in trust The removal of the list item of IPv4 allocation tables.The addresses IPv4 of " addresses IPv4 " field instruction Dynamic Host Configuration Protocol server in wherein Fig. 6 G The list item of the addresses IPv4 in allocation table is to be removed.
It should be noted that it may include sub- TLV 641 in TLV in Fig. 6 D only to be given in an illustrative manner in Fig. 6 E-6G Example.In a further embodiment, including in figure 6d sub- TLV 641 can also be such as " MC-vG Dynamic Host Configuration Protocol server Change list item TLV ".In addition to field shown in Fig. 6 F or 6G, which changes list item TLV and for example may be used To include that " change pattern " field still removes list item to indicate to add, or indicates that other shift gears.
The format sample of the TLV for dns server state synchronized is shown in Fig. 6 H.As an example, the locals DNS state includes The complete local name table of dns server, and the complete local name table of the dns server includes local device mark Know and corresponding IP address.The TLV can be referred to as MC-vG dns servers local state TLV 650.
The TLV 650 in Fig. 6 H may also be included in that in " RG applications data " message of ICCP.In one example, should Type field in TLV can be set to, for example, type codes 10.In some embodiments, the sub- TLV fields in the TLV 651 for example can be comprising TLV shown in Fig. 6 I-6K (that is, " this earth's surface of MC-vG dns servers synchronizes TLV ", " MC-vG One of the local list item TLV " of dns server addition, and " MC-vG DNS S servers remove local list item TLV "), for not Dns server state synchronized is carried out with mode.
Fig. 6 I show that server local table synchronizes the format sample of TLV 6511.The TLV can be used for the clothes of the DNS based on request Business device state synchronized, and the complete native name table of the dns server of virtual gateway in trust can be synchronized.
The number of the native name list item of " dns server local list item number " field instruction dns server in Fig. 6 I.DNS The native name list item of server includes the dynamic mapping between lan device ID and its corresponding address IPv4, which generally may be used With for example, found automatically by LAN, such as DHCPv4 requests obtain.
The format sample of MC-vG dns servers addition local list item TLV 6512 is shown in Fig. 6 J.The TLV can be used for It is not based on the dns server local state synchronized of request, and can be used for noticing the dns server of virtual gateway in trust Native name table new list item addition.The addresses IPv4 of lan device ID { lan device ID, } indicates LAN for example, in Fig. 6 J Mapping between device id and its corresponding address IPv4.
Show that MC-vG dns servers remove the format sample of local list item TLV 6513 in Fig. 6 K.The TLV can be used for It is not based on the dns server local state synchronized of request, and can be used for noticing the dns server of virtual gateway in trust Native name table list item removal.For example, will quilt in the native name table of lan device ID instructions dns server in Fig. 6 K The list item of removal.
Similar, in a further embodiment, it can also be that for example " MC-vG dns servers change to be included in the sub- TLV in Fig. 6 H Become list item TLV ".In addition to field shown in Fig. 6 J or 6K, which changes list item TLV for example can be with Including " change pattern " field to indicate to add or remove list item, or indicate that other shift gears.
It is shown in Fig. 6 L for synchronizing network address/port conversion (NAT) configuration information between virtual gateway server The format sample of TLV.The TLV can be referred to as such as MC-vG NAT configurations TLV 660.In some embodiments, NAT is configured Include, but are not limited at least one of the following：Instruction that whether nat feature is activated, port control protocols (PCP) whether Instruction that whether instruction that is activated, nat port shadowing agreement (NAT-PMP) are activated, universal plug and play internet gateway The instruction whether device control protocol (UPnP-IGD) is activated.
In one example, " the NAT enablings " in Fig. 6 L examples, " PCP enablings ", " NAT-PMP enablings " and " UPnP-IGD is opened With " field can separately include Boolean 0 or 1 to indicate whether corresponding function enables.Wherein, " NAT enablings " field controls Whether nat feature is activated in the WAN port of virtual gateway in trust.Similarly, " PCP enablings ", " NAT-PMP enablings " " UPnP-IGD enablings " field control respectively PCP, NAT-PMP, and UPnP-IGD agreement whether be allowed to control it is in trust The port mapping state of virtual gateway.In another embodiment, it can also indicate to indicate the enabling of corresponding function with other.
In some embodiments, if " NAT enablings " field is arranged to not enable, such as indicates that then " PCP is opened with 0 value With ", " NAT-PMP enablings " and " UPnP-IGD enablings " field is retained, such as its value should be arranged to 0.If " NAT is opened With " field is arranged to enable, such as is indicated with 1 value, then " PCP enablings ", " NAT-PMP enablings " and " UPnP-IGD enablings " Field includes effective value.
The format sample for the TLV of synchronous port mapping status information between virtual gateway server is shown in Fig. 6 M. The TLV can be referred to as such as MC-vG port mappings state TLV 670.Wherein the information type on head can for example pass through class Type code -15 indicates.In some embodiments, port mapping state includes at least one of the following：About hosted void Implicit IP address, outside ip address, inside end slogan, outer end slogan, agreement and the remaining life cycle of quasi- gateway.
As shown in Fig. 6 M, which can also include sub- TLV 671.The sub- TLV 671 for example may be, but not limited to, Fig. 6 N- (i.e. MC-vG port mapping tables synchronize TLV ", " MC-vG port mapping list items add TLV " and " ports MC-vG to TLV shown in 6P One of mapping item removes TLV "), for synchronous port mapping status in different ways.
Fig. 6 N show that MC-vG port mapping tables synchronize the format sample of TLV 6711.The TLV can be used for based on request Port mapping state synchronized, and the complete port mapping table of virtual gateway in trust can be synchronized.About hosted " the internal addresses IP " (such as " the internal addresses IPv4 ") of virtual gateway, " outside ip address " (such as " external IP v4 Location "), " inside end slogan ", " outer end slogan " and " agreement " field include port mapping rule, and " remaining life cycle " Field includes the remaining effective time of port mapping rule.For static port mapping, the value of " remaining life cycle " can be with It is expressed as 0xFFFFFFFF, it is meant that " never expired ".
Fig. 6 O show the format sample of MC-vG port mapping list items addition TLV 6712.The TLV can be used to be not based on to ask The port mapping state synchronized asked, and can be used for noticing the new port mapping rule of virtual gateway in trust.The TLV In " implicit IP address " (such as " internal addresses IPv4 "), " outside ip address " (such as " addresses external IP v4 "), " internal Port numbers ", " outer end slogan " and " agreement " field include new port mapping rule, and " remaining life cycle " field packet Remaining effective time containing new port mapping rule.For static port mapping, the value of " remaining life cycle " can be by It is set as 0xFFFFFFFF, it is meant that " never expired ".
Fig. 6 P show that MC-vG port mapping list items remove the format sample of TLV 6713.The TLV can be used to be not based on to ask The port mapping state synchronized asked, and can be used for noticing the removal of the port mapping rule of virtual gateway in trust.It should It is " implicit IP address " (such as " internal addresses IPv4 "), " outside ip address " (such as " addresses external IP v4 ") in TLV, " interior Portion's port numbers ", " outer end slogan " and " agreement " field include that port mapping to be removed is regular.
The lattice for the TLV of synchronization application level gateway (ALG) configuration information between virtual gateway server are shown in Fig. 6 Q Formula example.The TLV can be referred to as such as MC-vG ALG configurations TLV 680.Wherein the information type on head can for example pass through Type codes -19 indicate.MC-vG ALG configurations TLV may also be included in that in RG application layer data message.In some implementations In example, ALG configurations include indicating at least one of the following information whether being activated：Point-to-point tunneling protocol (PPTP), Two layer tunnel reach an agreement on (L2TP), Internet Protocol Security (IPsec), File Transfer Protocol (FTP), session initiation protocol (SIP) with And real time streaming transport protocol (RTSP).
As shown in Fig. 6 Q, which includes " ALG labels " field 681.The field 681 can for example have to be tied as shown in Fig. 6 R Structure.Each bit indicates whether corresponding ALG should be activated in virtual gateway in trust in Fig. 6 R.Such as the 2 to 7th Bit indicates respectively whether RTSP, SIP, FTP, IPsec, L2TP and PPTP should be activated.In this example, the the 0th and 1 Bit, which is retained, not to be had to, and can be set to 0.It should be appreciated that in another embodiment, should " ALG labels " field can be with Including the different ALG configurations of more either less bits or instruction.
In one embodiment, which can also include optional sub- TLV 682, and parameter is configured to carry additional ALG.And In further embodiments, which can indicate that ALG is configured using only simple ALG tag fields.
The format sample for the TLV of synchronous firewall configuration information between virtual gateway server is shown in Fig. 6 S.It should TLV can be referred to as such as MC-vG firewall configurations TLV 690.Wherein the information type on head can for example pass through type codes- 20 indicate.MC-vG firewall configurations TLV may also be included in that in RG application layer data message.
As shown in Fig. 6 S, which includes " Firewall Protection grade " field 691, with instruction, the degree of protection of fire wall.It should be " anti- Wall with flues degree of protection " for example can be set to the following table 3 specified in BBF TR-317 7.5.8 sections " fire wall demand " Shown in one of value：
Table 3
In one embodiment, which can also include optional sub- TLV, to carry additional firewall configuration parameter.And In other embodiments, which can indicate firewall configuration using only simple Firewall Protection rank field, also, This in most of use-cases enough.
Now turn to Fig. 3 A.In one embodiment, method 300 further includes block 330, wherein the first virtual gateway server 104 Message is disconnected to the transmission of the second virtual gateway server 114.As an example, in block 330, the first virtual gateway server 104 MC-vG can be disconnected to TLV 700 includes in ICCP " RG is disconnected " message, and to the second virtual gateway service Device 114 is sent, to indicate that MC-vG will be terminated using connection.
Fig. 7 A show that MC-vG disconnects the format sample of TLV 700.According to one embodiment of the disclosure, in the TLV U, the meaning of F, length, type and optional each fields of sub- TLV is identical as shown in table 1.Unlike, for the TLV, class Type-word section can be set to different type codes, for example, type codes -2.The value of length field can be according to the tool of the TLV Body length and be set.
In addition, in some embodiments, in the finger for disconnecting the reason of message may include disconnecting that block 330 is sent Show.For example, it includes that referred to as " MC-vG is disconnected that the first virtual gateway server 104 can disconnect TLV in MC-vG The sub- TLV 710 of reason TLV ", the reason of disconnection with instruction connection.
Show that MC-vG disconnects the format sample of reason TLV 710 in Fig. 7 B.The type field of the TLV can be set For for example, type codes -23.In addition, as shown in Figure 7 B, it includes disconnecting reason character string that MC-vG, which disconnects reason TLV, Field comprising the character string of variable-length, for specified the reason of disconnecting.In some embodiments, original is disconnected Because character string can be encoded with unicode format transformation 8 (UTF-8).In one embodiment, the character String, which can not include, terminates null character.
In another embodiment, the first virtual gateway server 104 can also be received from the second virtual gateway server 114 and be disconnected Connection message, although the action is not shown in figure 3 a.
The method 800 executed at the second virtual gateway server below in conjunction with Fig. 8 descriptions.The second virtual gateway server can To be, such as, but not limited to, virtual gateway server 104 shown in Fig. 1 or 114 or any other with similar functions The network equipment.For the ease of discussing, method is described below with reference to the network environment 100 of virtual gateway server 114 and Fig. 1 800。
As shown in figure 8, in block 810, the second virtual gateway server 114 and the first virtual gateway service in communication network 100 Device (such as 104 in Fig. 1) establishes the connection of virtual gateway synchronous applications.First virtual net of the separation in the communication network 100 It (is, for example, standby virtual net to close server 104 (being, for example, active virtual gateway server) and the second virtual gateway server 114 Close server) it is used to provide for redundancy protecting.This redundant virtual gateway server structure is different from existing NERG solution party Case.
In block 820, the second virtual gateway server 114 is received from the first virtual gateway server 104 by first virtual gateway The information of 104 trustship of server, for synchronizing.In some embodiments, which includes at least one of the following：WAN joins Number, LAN parameters, DHCP configurations, dhcp state, the locals DNS state, NAT configurations, port mapping state, ALG configurations and fire prevention Wall configures.
In one embodiment, the operation of block 810 and 820 is corresponding with the operation of the block of method 300 310 and 320 respectively, or It is corresponding with the process 210,220 in Fig. 2.Therefore, the related content above with reference to described in the process of Fig. 2 and method 300 is same herein Sample is applicable in.
For example, in block 820, the second virtual gateway server 114 can send to synchronize and ask to the first virtual gateway server 104 It asks, and receives the synchronizing information as the response to the synchronization request.Above for example with reference to described in figure 3D, 4A, 4B about The description of synchronization request is equally applicable herein, and repeats no more.In another embodiment, the second virtual gateway server 114 In the case where not sending synchronization request synchronizing information can be received from the first virtual gateway server 104.
In some embodiments, the second virtual gateway server 114 can be by receiving in the TLV as shown in Fig. 6 A-6S extremely Lack a TLV to receive synchronizing information.
In another embodiment, method 800 can also include corresponding with the block of method 300 330 piece 830, wherein second is virtual Gateway server 114 can receive from the first virtual gateway server 104 and disconnect message.In a further embodiment, It can include instruction the reason of disconnecting that this, which disconnects message,.In another embodiment, the second virtual gateway server 104 can also disconnect message to the transmission of the first virtual gateway server 114, although the action is not shown in FIG. 8.In conjunction with The description as described in disconnecting message that method 300 and Fig. 7 A-7B are provided is equally applicable herein.
It should be understood that across the machine frame virtual gateway synchronization mechanism (such as combined method 300 and 800 institutes that are proposed in the disclosure The mechanism stated) should be used together in conjunction with across machine frame selection/handoff protocol it is superfluous to form completely across machine frame virtual gateway server Remaining/protection solution.The redundancy that across machine frame virtual gateway synchronization mechanism keeps hosted on redundant virtual gateway server is empty The configuration of quasi- gateway and/or the synchronization of status information；And across machine frame selection/handoff protocol from the virtual gateway server of redundancy and Active members are selected in pseudo-wire/superposition tunnel, and are switched to backup member when breaking down.However, the disclosure is unrestricted In any specifically across machine frame selection/handoff protocol.For example, it can be across the machine frame pseudo-wire redundancy machine based on ICCP of standard System or the VPLS based on BGP return connection mechanism more.
For example, when occurring the virtual gateway server of two redundancies in Fig. 1, each virtual gateway server, which can be run, to be used for Two applications of across machine frame virtual gateway server redundancy/protection.One application is, for example, across the machine frame virtual net based on ICCP Synchronous applications are closed, configuration and/or state synchronized for executing redundant virtual gateway in accordance with an embodiment of the present disclosure；Another is answered It is movable for being selected from the virtual gateway server of redundancy and pseudo-wire/superposition tunnel with being across machine frame selection/switching application Virtual gateway server and pseudo-wire/superposition tunnel.
Active virtual gateway on movable virtual gateway server will respond the operation of user, and correspondingly change its configuration And/or status data.The configuration of active virtual gateway and/or the change of status data can be with for example, to be not based on the side of request Formula is synchronized to support immediately via suitably across machine frame virtual gateway application TLV (such as in Fig. 6 A-6S one or more) Standby virtual gateway of the pipe in standby virtual gateway server.
In addition, each standby virtual gateway of trustship can also be by movable virtual gateway in standby virtual gateway server Server sends suitably across machine frame virtual gateway synchronization request TLV according to an embodiment of the present disclosure to ask its desired void The synchronization of any part of quasi- gateway configuration and/or status data.
Using for being currently configured and/the synchronization mechanism based on request of status information, and for increment modification ground configuration and/ The synchronization mechanism for being not based on request of status information, it is virtual in active virtual gateway server and standby virtual gateway server Gateway is to that will keep hot backup.As a result, when virtual gateway server switches, user can be in continual service In the case of be immediately switched to virtual gateway in standby virtual gateway server.
Across the machine frame virtual gateway synchronous protocol of the extension based on RFC 7275 is proposed in some embodiments of the present disclosure.The association View can (across machine frame pseudo-wire redundancy scheme such as based on ICCP be based on BGP with existing across machine frame selection/handoff protocol VPLS more return connection mechanism) combine, with provide for BBF TR-317NERG solutions across machine frame virtual gateway service Redundancy/protection of device.In existing BBF TR-317NERG solutions, the virtual gateway trustship facility as key network element is The single failure point of end-to-end solution.Current to be directed to the solution to the problem not yet, the disclosure is attempted to solve for the first time The problem.
NERG is considered as one of main network function virtualization (NFV) solution in next-generation fixed access network.Very may be used The many operators of energy will dispose some form of NERG solutions.Virtual gateway trustship facility is in end-to-end solution Key network element, therefore, the disclosure it has been recognised by the inventors that the redundancy protecting mechanism for virtual gateway trustship facility is necessary , and operator will benefit from the synchronization mechanism/agreement proposed in the disclosure.
Fig. 9 shows the block diagram of the device 900 according to one embodiment of the disclosure.The device 900 may be implemented as/in First virtual gateway server (for example, virtual gateway server 104 or 114 shown in FIG. 1) or appointing with similar functions What suitable network equipment.For simplicity, it is assumed that device 1000 is implemented in virtual gateway server 104.Device 900 can Operation is execution with reference to the figure 3A-3D exemplary methods 300 described and possible any other process or method.It is also understood that Method 300 is not necessarily executed by device 900.At least some operations of method 300 can be held by other one or more entities Row.
As shown in figure 9, device 900 includes connection establishment unit 901 and synchronization unit 902.The connection establishment unit 901 is configured It is connected to establish virtual gateway application with the second virtual gateway server 114 in the communication network 100.Second virtual net It closes server 114 to be physically isolated with the first virtual gateway server 104, composition redundancy group is for offer redundancy protecting. The synchronization unit 902 is configured as the virtual gateway synchronizing information of trustship at the first virtual gateway server to described Two virtual gateway servers, the wherein information include at least one of the following：Wide area network parameters, local network parameters, dynamic are main Machine configuration protocol configures, DHCP states, name server local state, and network address translation configuration, port mapping state is answered With the configuration of layer gateway and firewall configuration.
In some embodiments, connection establishment unit 901 and synchronization unit 902 can be respectively configured as executing and method 300 The operation similar with 320 of block 310, therefore, the related content described in combined method 300 and attached drawing 3A-7B is equally suitable herein With.
In another embodiment, device 900 can also include transmission unit 903, be configured as to second virtual gateway The transmission of server 114 disconnects message.It is equally applicable herein previously for the description for disconnecting message.In another embodiment In, device 900 can also include unshowned receiving unit, be configured as connecing from the second virtual gateway server 114 Receipts disconnect message
Figure 10 shows the block diagram of the device 1000 according to one embodiment of the disclosure.The device 1000 may be implemented as/ In the second virtual gateway server (for example, virtual gateway server 104 or 114 shown in FIG. 1) or with similar functions Any suitable network equipment.For simplicity, it is assumed that device 1000 is implemented in virtual gateway server 114.Device 1000 It is operable as executing the exemplary method 800 described with reference to figure 8 and possible any other process or method.It is also understood that side Method 800 is not necessarily executed by device 800.At least some operations of method 800 can be executed by other one or more entities.
As shown in Figure 10, device 1000 includes connection establishment unit 1001 and synchronization unit 1002.The connection establishment unit 1001 It is configured as establishing virtual gateway application connection with the first virtual gateway server 104 in the communication network 100.This second Virtual gateway server 114 is detached with the first virtual gateway server 104, and composition redundancy group is for offer redundancy protecting.It should Synchronization unit 1002 is configured as receiving the information of its trustship from the first virtual gateway server 104, for synchronizing, the wherein letter Breath includes at least one of the following：Wide area network parameters, local network parameters, DHCP configurations, dhcp state, name server are local State, network address translation configuration, port mapping state, application layer gateway configuration and firewall configuration.
In some embodiments, connection establishment unit 1001 and synchronization unit 1002 can be respectively configured as execution and method 800 block 810 and 820 identical operations, therefore, the related content described in combined method 800 are equally applicable to connection and establish list Member 1001 and synchronization unit 1002.
In another embodiment, device 1000 can also include receiving unit 1003, be configured as taking from the first virtual gateway The business reception of device 104 disconnects message.It is equally applicable herein previously for the description for disconnecting message.In another embodiment In, device 1000 can also include unshowned transmission unit, be configured as sending out to the first virtual gateway server 114 It send and disconnects message.
Figure 11 shows the simplified block diagram for the equipment 1100 for being suitable for realizing embodiment of the disclosure.Equipment 1100 can be used for real The virtual gateway server (such as virtual gateway 104 either 114) or part of it now operated as described above.Such as Shown in figure, equipment 1100 includes one or more processor 1110, is coupled to one or more storage of processor 1110 Device 1120, and it is coupled to one or more transmitter and/or receiver (TX/RX) 1140 of processor 1110.
Processor 1110 can be any suitable type suitable for local technical environment, and can include but is not limited to lead to With computer, special purpose computer, microcontroller, digital signal controller (DSP) and multinuclear controller bay based on controller One or more of structure is multiple.Equipment 1100 can also include multiple processors, and such as application-specific integrated circuit, this is special integrated Circuit is subordinated to the clock of synchronous primary processor in time.
Memory 1120 can be any suitable type suitable for local technical environment, and can utilize any suitable Data storage technology realizes, may include such as non-transient computer-readable media, based on partly leading as non-limiting example Memory device, magnetic memory device and the system of body, light storage device and system, fixed memory and removable memory.To the greatest extent The memory list that illustrate only a memory cell in pipe Figure 11, but can have multiple physics different in equipment 1100 Member.
Memory 1120 stores at least part of program 1130.TX/RX 1140 is used for bilateral communication.Communication interface in figure It can indicate any interface for other network elements communicate needs.
Program 1130 is assumed to include program instruction, and the program instruction by associated processor when being executed so that equipment 1100 execute operation according to an embodiment of the present disclosure, as described in refer to the attached drawing 2-10.That is, embodiment of the disclosure can lead to The computer software that can be executed by processor 1110 and device 1100 is crossed to implement, or by software and hardware combination Lai real It applies.
For example, when equipment 1100 serves as virtual gateway server, controller 1110 executes the instruction stored in memory 1120 1130 so that virtual gateway server realize above with reference to described in Fig. 3 A-7B method 300 or method described in reference diagram 8 800.It is suitable for equipment 1100 above with reference to all features described in Fig. 3 A- Fig. 8, details are not described herein.
In general, the various example embodiments of the disclosure can hardware or special circuit, software, firmware, logic or its What implements in combining.Some aspects can be implemented within hardware, and other aspects can by controller, microprocessor or Implement in the firmware or software that other computing devices execute.When the various aspects of embodiment of the disclosure are illustrated or described as frame When figure, flow chart or other certain graphical representations of use, it will be understood that box described herein, device, system, techniques or methods can Using in terms of as unrestricted example in hardware, software, firmware, special circuit or logic, common hardware or controller or other It calculates and implements in equipment or its certain combination.
As an example, can be compiled with general processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), scene Journey gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components or for holding The arbitrary combination of the component of row function as described herein various in conjunction with described in the disclosure is illustratively patrolled to realize or execute Collect block, module and circuit.General processor can be microprocessor, alternatively, processor can also be any common processor, Controller, microcontroller or state machine.Processor can also be embodied as the combination of computing device, for example, DSP and microprocessor Combination, multi-microprocessor, one or more microprocessors and DSP core combination or any other such structure.
As an example, embodiment of the disclosure can be described in the context of machine-executable instruction, machine is executable to be referred to Enable such as includes in the program module that is executed in device on physically or a virtually processor.In general, program module packet Routine, program, library, object, class, component, data structure etc. are included, specific task is executed or realizes specific abstract data Structure.In embodiments, the function of program module can merge or divide between described program module.For journey The machine-executable instruction of sequence module can execute in local or distributed apparatus.In distributed apparatus, program module Can be located locally in remote medium storage the two.
The computer program code of method used to implement the present disclosure can be write with one or more programming languages.These are calculated Machine program code can be supplied to the processor of all-purpose computer, special purpose computer or other programmable data processing units, So that program code when by computer or the execution of other programmable data processing units, cause in flow chart and/or Function/operation specified in block diagram is carried out.Program code can completely on computers, part on computers, as only Vertical software package, part are on computers and part is held on a remote computer or server on the remote computer or completely Row.
Machine readable media is also provided in the disclosure, is stored thereon with computer instruction, the instruction by device when being executed so that The device implements method according to an embodiment of the present disclosure.The machine readable media can be include or storage be used for or about Any tangible medium of the program of instruction execution system, device or equipment.Machine readable media can be that machine-readable signal is situated between Matter or machine readable storage medium.Machine readable media can include but is not limited to electronics, magnetic, it is optical, electromagnetism, red Outer or semiconductor system, device or equipment or its any appropriate combination.The more detailed example packet of machine readable storage medium It includes with the electrical connection of one or more conducting wire, portable computer diskette, hard disk, random access memories (RAM), read-only Memory (ROM), Erasable Programmable Read Only Memory EPROM (EPROM or flash memory), light storage device, magnetic storage apparatus or its The suitable combination of meaning.
In addition, although the operation in some embodiments is depicted with particular order, this simultaneously should not be construed and require such behaviour Make the particular order to show or completed with sequential order, or executes the operation of all diagrams to obtain expected result.At certain In the case of a little, multitask or parallel processing can be beneficial.Similarly, although discussed above contain certain specific implementations carefully Section, but this and should not be construed as limiting any invention or the scope of the claims, and should be interpreted that specific invention can be directed to Specific embodiment description.Certain features in this specification described in the context of separated embodiment can also be integrated Implement in single embodiment.Conversely, the various features described in the context of single embodiment can also be discretely more A embodiment is implemented in arbitrary suitable sub-portfolio.
Although with specific to the language description of structural features and or methods of action theme, but it is to be understood that appended power The theme that profit limits in requiring is not limited to above-described special characteristic or action.On the contrary, above-described special characteristic and Action is disclosed as the exemplary forms for realizing claim.

Claims (43)

1. a kind of method at the first virtual gateway server in a communication network, including：
Virtual gateway synchronous applications are established with the second virtual gateway server in the communication network to connect, described second is virtual Gateway server is physically isolated to provide redundancy protecting with the first virtual gateway server；And
By the synchronizing information of trustship at the first virtual gateway server to the second virtual gateway server, described information Including at least one of following：Wide area network (WAN) parameter, LAN (LAN) parameter, dynamic host configuration protocol (DHCP) configuration, Dhcp state, name server (DNS) local state, network address translation (NAT) configuration, port mapping state, application layer net Close (ALG) configuration and firewall configuration.
2. according to the method described in claim 1, several animated virtual nets of wherein described first virtual gateway trust server It closes, and several standby virtual gateways of the second virtual gateway trust server.
3. according to the method described in claim 1, the synchronizing information wherein by trustship at the first virtual gateway server arrives The second virtual gateway server includes：
Determine whether the information of trustship at the first virtual gateway server is changed；And
In response to determining that described information is changed, described information is synchronized to the second virtual gateway server.
4. according to the method described in claim 1, the synchronizing information wherein by trustship at the first virtual gateway server arrives The second virtual gateway server include it is following in one：
By sending synchronizing information type lengths values (TLV) to the second virtual gateway server come to second virtual net Close server sync described information；
Increased to the second virtual gateway server by sending information increase TLV to the second virtual gateway server A part for described information；
It is removed from the second virtual gateway server by sending information removing TLV to the second virtual gateway server A part for described information；And
Change TLV by sending information to the second virtual gateway server come to the second virtual gateway server sync The part of described information being changed.
5. according to the method described in claim 1, the synchronizing information wherein by trustship at the first virtual gateway server arrives The second virtual gateway server includes：
Synchronizing information request is received from the second virtual gateway server；And
In response to receiving the synchronization request, described information is synchronized to the second virtual gateway server.
6. according to the method described in claim 5, wherein receiving synchronizing information request bag from the second virtual gateway server It includes：
The synchronization request, institute are received in synchronization request type lengths values (TLV) in redundancy group (RG) application data message State synchronization request TLV include for synchronization request described in unique mark request identifier with for asked synchronous information The instruction of type；And
Wherein in response to receiving the synchronization request, described information, which is synchronized to the second virtual gateway server, includes：
To the second virtual gateway server send first message, the first message include the request identifier and with At least one of in lower：
Indicate the first mark that start information synchronizes, and
Indicate second mark of the described information with the end of the step.
7. according to the method described in claim 6, wherein for asking to be designated as described in the type of synchronous information Bit map, whether the information of the bit instruction respective type in the bit map is requested to synchronize.
8. according to the method described in claim 1, wherein established with the second virtual gateway server virtual gateway synchronization answer Include with connection：
Include the redundancy group of across machine frame virtual gateway connection type length value (TLV) to the second virtual gateway server transmission (RG) connection message, across the machine frame virtual gateway connection TLV includes type field, and the type field is configured to corresponding Types value is to indicate that establishing across machine frame virtual gateway synchronous applications with the second virtual gateway server connect.
9. according to the method described in claim 1, the synchronizing information wherein by trustship at the first virtual gateway server arrives The second virtual gateway server includes：
Redundancy group (RG) application data message is sent to the second virtual gateway server, the RG application data messages include The type lengths values (TLV) for the described information to be synchronized are carried, and the TLV includes type field, the type field Corresponding types value is configured to indicate the type for the described information to be synchronized.
10. according to the method described in claim 1, the wherein described WAN parameters include at least one of following：For hosted void The WAN media access controls address (MAC) of quasi- gateway and the WAN Internet Protocols (IP) for hosted virtual gateway The parameter of stack.
11. according to the method described in claim 1, the wherein described LAN parameters include at least one of following：For hosted void The media access control address (MAC) of the LAN port of quasi- gateway and the LAN port for hosted virtual gateway because Special fidonetFido (IP) configuration.
12. according to the method described in claim 1, the wherein described DHCP configurations include at least one of following：Dynamic Host Configuration Protocol server is The no instruction being activated, the instruction of Internet Protocol (IP) address pool, the IP address rental period, gateway ip address, subnet mask, Primary dns server IP address and auxiliary dns server IP address.
13. according to the method described in claim 1, the wherein described dhcp state includes the Internet Protocol (IP) of Dynamic Host Configuration Protocol server Allocation tables, and the list item of the IP address allocation table of the Dynamic Host Configuration Protocol server includes IP address, media access control (MAC) Address and remaining rental period.
14. according to the method described in claim 1, the wherein described locals the DNS state includes the complete local life of dns server Famous-brand clock, and the complete local name table of the dns server includes local device mark and corresponding Internet Protocol (IP) address.
15. according to the method described in claim 1, the wherein described NAT configurations include at least one of following：Nat feature whether by Whether instruction that whether instruction of enabling, port control protocols (PCP) are activated, nat port shadowing agreement (NAT-PMP) are opened The instruction whether instruction, universal plug and play the Internet gateway device control protocol (UPnP-IGD) are activated.
16. according to the method described in claim 1, the wherein described port mapping state includes at least one of following：
About address internal internet protocol (IP) of hosted virtual gateway, outside ip address, inside end slogan, outer end Slogan, agreement and remaining life cycle.
17. according to the method described in claim 1, the wherein described ALG configurations include whether at least one of instruction or less is activated Information：
Point-to-point tunneling protocol (PPTP), second layer tunnel agreement (L2TP), Internet Protocol Security (IPsec), file transmission association Discuss (FTP), session initiation protocol (SIP) and real time streaming transport protocol (RTSP).
18. according to the method described in claim 1, the protection class of the wherein described firewall configuration instruction fire wall, the guarantor Protect grade be close, be high, in or it is low.
19. according to the method described in claim 1, further including：
Message is disconnected to the second virtual gateway server transmission.
20. according to the method for claim 19, wherein described to disconnect message include instruction the reason of disconnecting.
21. a kind of method at the second virtual gateway server in a communication network, including：
Virtual gateway synchronous applications are established with the first virtual gateway server in the communication network to connect, described second is virtual Gateway is physically isolated to provide redundancy protecting with the first virtual gateway server；And
From the first virtual gateway server receive at the first virtual gateway server trustship information for The first virtual gateway server sync, described information include at least one of following：Wide area network (WAN) parameter, LAN (LAN) parameter, dynamic host configuration protocol (DHCP) configuration, dhcp state, name server (DNS) local state, network Convert (NAT) configuration, port mapping state, application layer gateway (ALG) configuration and firewall configuration in location.
22. according to the method for claim 21, wherein several animated virtuals of the first virtual gateway trust server Gateway, and several standby virtual gateways of the second virtual gateway trust server.
23. according to the method for claim 21, wherein being received from the first virtual gateway server empty described first At quasi- gateway server the information of trustship include it is following in one：
Described information is received by receiving synchronizing information type lengths values (TLV) from the first virtual gateway server；
It is received by receiving information increase TLV from the first virtual gateway server for being taken in second virtual gateway Increased described information at business device；
It is received by receiving information removing TLV from the first virtual gateway server for being taken from second virtual gateway The described information that business device removes；And
It is accessed by receiving information change TLV from the first virtual gateway server for being taken in second virtual gateway The described information changed at business device.
24. according to the method for claim 21, wherein being received from the first virtual gateway server empty described first The information of trustship includes at quasi- gateway server：
The uncalled synchronizing information that first virtual gateway server is actively sent；And
Synchronizing information request is sent to the first virtual gateway server；And
The described information sent as the response to the synchronization request is received from the first virtual gateway server.
25. according to the method for claim 24, wherein sending synchronizing information request to the first virtual gateway server Including：
The synchronization request, institute are sent in synchronization request type lengths values (TLV) in redundancy group (RG) application data message State synchronization request TLV include for synchronization request described in unique mark request identifier with for asked synchronous information The instruction of type；And
The described information sent as the response to the synchronization request is wherein received from the first virtual gateway server Including：
From the first virtual gateway server receive message, the message include the request identifier and be following in extremely One item missing：
Indicate the first mark that start information synchronizes, and
Indicate second mark of the described information with the end of the step.
26. according to the method for claim 25, wherein the instruction of the type for asking synchronous information For bit map, whether the information of the bit instruction respective type in the bit map is requested to synchronize.
27. according to the method for claim 21, wherein it is synchronous to establish virtual gateway with the first virtual gateway server Include using connection：
Include the redundancy group of across machine frame virtual gateway connection type length value (TLV) to the first virtual gateway server transmission (RG) connection message, across the machine frame virtual gateway connection TLV includes type field, and the type field is configured to corresponding Types value is to indicate that establishing across machine frame virtual gateway synchronous applications with the first virtual gateway server connect.
28. according to the method for claim 21, wherein being received from the first virtual gateway server empty described first The information of trustship includes at quasi- gateway server：
Redundancy group (RG) application data message is received from the first virtual gateway server, the RG application data messages include The type lengths values (TLV) for the described information to be synchronized are carried, and the TLV includes type field, the type field Corresponding types value is configured to indicate the type for the described information to be synchronized.
29. according to the method for claim 21, wherein the WAN parameters include at least one of following：For hosted The WAN media access controls address (MAC) of virtual gateway and the WAN Internet Protocols for hosted virtual gateway (IP) parameter of stack.
30. according to the method for claim 21, wherein the LAN parameters include at least one of following：For hosted The media access control address (MAC) of the LAN port of virtual gateway and the LAN port for hosted virtual gateway Internet Protocol (IP) configures.
31. according to the method for claim 21, wherein DHCP configurations include at least one of following：Dynamic Host Configuration Protocol server is The no instruction being activated, the instruction of Internet Protocol (IP) address pool, the IP address rental period, gateway ip address, subnet mask, Primary dns server IP address and auxiliary dns server IP address.
32. according to the method for claim 21, wherein the dhcp state includes the Internet Protocol of Dynamic Host Configuration Protocol server (IP) allocation tables, and the list item of the IP address allocation table of the Dynamic Host Configuration Protocol server includes IP address, media access control (MAC) address and remaining rental period.
33. according to the method for claim 21, wherein the locals DNS state includes the complete local of dns server Table is named, and the complete local name table of the dns server includes local device mark and corresponding Internet Protocol (IP) address.
34. according to the method for claim 21, wherein NAT configurations include at least one of following：Nat feature whether by Whether instruction that whether instruction of enabling, port control protocols (PCP) are activated, nat port shadowing agreement (NAT-PMP) are opened The instruction whether instruction, universal plug and play the Internet gateway device control protocol (UPnP-IGD) are activated.
35. according to the method for claim 21, wherein the port mapping state includes at least one of following：
About address internal internet protocol (IP) of hosted virtual gateway, outside ip address, inside end slogan, outer end Slogan, agreement and remaining life cycle.
36. according to the method for claim 21, wherein ALG configurations include whether at least one of instruction or less is activated Information：
Point-to-point tunneling protocol (PPTP), second layer tunnel agreement (L2TP), Internet Protocol Security (IPsec), file transmission association Discuss (FTP), session initiation protocol (SIP) and real time streaming transport protocol (RTSP).
37. according to the method for claim 21, wherein the protection class of firewall configuration instruction fire wall, the guarantor Protect grade be close, be high, in or it is low.
38. according to the method for claim 21, further including：
Message is disconnected from the first virtual gateway server reception.
39. according to the method for claim 38, wherein described to disconnect message include instruction the reason of disconnecting.
40. a kind of device, including processor and the memory that is coupled with the processor, the memory includes to be stored therein Instruction, described instruction make when being executed by the processor described device execute according to any one of claim 1-20 The method.
41. a kind of device, including processor and the memory that is coupled with the processor, the memory includes to be stored therein Instruction, described instruction make when being executed by the processor described device execute according to any in claim 21-39 Method described in.
42. a kind of computer-readable medium is stored thereon with computer program, the computer program includes computer instruction, The computer instruction by least one processor when being executed so that at least one processor is executed according to claim The method described in any claim in 1-20.
43. a kind of computer-readable medium is stored thereon with computer program, the computer program includes computer instruction, The computer instruction by least one processor when being executed so that at least one processor is executed according to claim The method described in any claim in 21-39.
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