CN102447703B - A kind of heat backup method and system, CGN equipment - Google Patents
A kind of heat backup method and system, CGN equipment Download PDFInfo
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Abstract
The present invention provides a kind of heat backup method, CGN equipment and system, including：First user information is sent to the 2nd CGN equipment and backed up by the master control administrative unit of first carrier class networks address conversion (CGN) equipment；After first Service Processing Unit of the first CGN equipment receives the backup notice of the 2nd CGN equipment, all session informations under first user are sent to the 2nd CGN equipment and are backed up.The two-node cluster hot backup of the CGN equipment rooms for NAT business under centralized deployment scene, can be realized by the present invention, improves service stability, and can realize load balancing.
Description
Technical field
The present invention relates to the communications fields, relate more specifically to a kind of hot spare method of distributed multi-processor CGN equipment rooms
With system, CGN equipment.
Background technology
Double stack tunneled network address conversion (Dual-stack lite Carrier Grade Network Address
Translation, abbreviation DS-Lite CGN) be it is a kind of in IPv4 (Internet protocol fourth edition) networks to IPv6 (internet protocols
Discuss sixth version) NAT technology under network transition.
Fig. 1 illustrates a kind of deployment scenario of DS-Lite CGN centralizations, wherein, access terminal including but not limited to
PC, tablet computer, smart mobile phone etc., access terminal send out IPv4 messages to accessing gateway equipment, accessing gateway equipment
Being encapsulated into 4in6, (IPv4 in IPv6 are that a kind of Ipv4 messages are encapsulated into the load of Ipv6 messages is transmitted, arrive
During up to termination point of a tunnel, then stripping out Ipv4 messages and be forwarded) tunnel packet is forwarded to CGN (Carrier by tunnel (flexible cord)
Grade NAT, carrier class networks address conversion) equipment, CGN equipment stripping tunnel head after by NAT44 (IPv4 to IPv4's
Network address translation) network address translation is forwarded to internet；The IPv4 messages of internet reach CGN equipment, turn by NAT44
4in6 tunnel packets are packaged into after changing, accessing gateway equipment is forwarded to by tunnel, accessing gateway equipment will after peeling tunnel head off
IPv4 messages are sent to access terminal.
Current CGN equipment is mostly distributed system, and the proportioning of its service card and line card can be configured on demand.Fig. 2 is CGN
Device distribution formula cellular construction, each unit correspond to a processor；Master control administrative unit manages multiple business processing lists concentratedly
Member and message retransmission unit；Multiple Service Processing Units are shared the service traffics from message retransmission unit, a kind of realization
It is to be shunted according to User IP v6 addresses, is uniformly distributed in each Service Processing Unit as possible.
The Distributed C GN equipment of said program, deployment is not extensive commercial also in test phase, and point of industry
Cloth CGN equipment can only support the backup between service card, not support the two-node cluster hot backup of CGN equipment rooms.
Invention content
The technical problem to be solved in the present invention is to provide a kind of heat backup method, CGN equipment and system, with CGN equipment it
Between two-node cluster hot backup.
In order to solve the above technical problem, the present invention provides a kind of heat backup method, including：
First user information is sent to by the master control administrative unit of first carrier class networks address conversion (CGN) equipment
Two CGN equipment are backed up；After first Service Processing Unit of the first CGN equipment receives the backup notice of the 2nd CGN equipment,
All session informations under first user are sent to the 2nd CGN equipment to back up.
Further, the above method also has the characteristics that following：The master control administrative unit of first CGN equipment believes the first user
During the 2nd CGN equipment that breath is sent to is backed up, further include：
First user information is synchronized at the first business of the first CGN equipment by the master control administrative unit of the first CGN equipment
Manage unit.
Further, the above method also has the characteristics that following：
If the first CGN equipment is using light-weight dual-stack tunnel (DS-Lite) NAT technology progress network address
Conversion, then the first user information includes：IPv6 prefixes, subnet prefix length, tunnel information and Virtual Private Network information, it is described
Tunnel information includes at least User IP v6 addresses and tunnel destination IP v6 addresses；
If the first CGN equipment is using NAT technology (NAT64) the progress message conversion of IPv6 to IPv4, then the
One user information includes：IPv6 prefixes and subnet prefix length, NAT64 prefixes and Virtual Private Network information；
If the first CGN equipment is using NAT technology (NAT44) the progress message conversion of IPv4 to IPv4, then the
One user information includes：IPv4 addresses and Virtual Private Network information.
Further, the above method also has the characteristics that following：The session information includes：
Port control protocols response value information, network address translation session information and application layer gateway (ALG) information,
In,
The network address translation session information includes：Private network IPv4 addresses, public network IP v4 addresses, port or port block letter
Breath, protocol type and its owning user identification information；
The ALG information includes：ALG controls information, ALG protocol types and its owning user identification information.
Further, the above method also has the characteristics that following：It further includes：
After the master control administrative unit of first CGN equipment receives the second user information of the 3rd CGN equipment, by second user
Synchronizing information gives the second Service Processing Unit；
After second Service Processing Unit of the first CGN equipment receives second user information, sent to the 3rd CGN equipment standby
Part notice, wherein,
3rd CGN equipment and the 2nd CGN equipment for same equipment or
3rd CGN equipment is different equipment from the 2nd CGN equipment.
To solve the above-mentioned problems, the present invention also provides a kind of distributed carrier class networks address conversions (CGN) to set
It is standby, including：Master control administrative unit and the first Service Processing Unit are built between the master control administrative unit and a specified CGN equipment
Vertical to have backup path, being established between the first Service Processing Unit and the specified CGN equipment has session backup path, wherein,
The master control administrative unit backs up for the first user information to be sent to specified CGN equipment；
First Service Processing Unit, receive the specified CGN equipment backup notice after, will be under first user
All session informations are sent to the specified CGN equipment and are backed up.
Further, above-mentioned CGN equipment also has the characteristics that following：
First user information is sent to during the specified CGN equipment backed up by the master control administrative unit
It is additionally operable to, the first user information is synchronized to by the first Service Processing Unit by the user ID channel pre-established.
Further, above-mentioned CGN equipment also has the characteristics that following：
If the CGN equipment is using light-weight dual-stack tunnel (DS-Lite) NAT technology progress network address
Conversion, then the first user information includes：IPv6 prefixes, subnet prefix length, tunnel destination IP v6 addresses and Virtual Private Network
Information；
If the CGN equipment is using NAT technology (NAT64) the progress message conversion of IPv6 to IPv4, then the
One user information includes：IPv6 prefixes and subnet prefix length, NAT64 prefixes and Virtual Private Network information；
If the CGN equipment is using NAT technology (NAT44) the progress message conversion of IPv4 to IPv4, then the
One user information includes：IPv4 addresses and Virtual Private Network information.
Further, above-mentioned CGN equipment also has the characteristics that following：The session information includes：
PCP responses value information, network address translation session information and application layer gateway (ALG) information, wherein,
The network address translation session information includes：Private network IPv4 addresses, public network IP v4 addresses, port or port block letter
Breath, protocol type and its owning user identification information；
The ALG information includes：ALG controls information, ALG protocol types and its owning user identification information.
Further, above-mentioned CGN equipment also has the characteristics that following：The second Service Processing Unit is further included,
The master control administrative unit, after being additionally operable to the second user information for receiving the 3rd CGN equipment, second user is believed
Breath is synchronized to the second Service Processing Unit；
After receiving second user information, backup notice is sent to the 3rd CGN equipment for second Service Processing Unit,
Wherein,
3rd CGN equipment and the 2nd CGN equipment for same equipment or
3rd CGN equipment is different equipment from the 2nd CGN equipment.
To solve the above-mentioned problems, the present invention also provides a kind of hot backup system, including：First carrier class networks
Address conversion (CGN) equipment and the 2nd CGN equipment, wherein,
Being established between the master control administrative unit of first CGN equipment and the master control administrative unit of the 2nd CGN equipment has backup to lead to
Road, being established between the first Service Processing Unit of the first CGN equipment and the first Service Processing Unit of the 2nd CGN equipment has session
Backup path, wherein,
The master control administrative unit of first CGN equipment, it is standby for the first user information to be sent to the progress of the 2nd CGN equipment
Part；
The master control administrative unit of 2nd CGN equipment after receiving the first user information, passes through the user pre-established
First user information is synchronized to the first Service Processing Unit of the 2nd CGN equipment by backup path；
First Service Processing Unit of the 2nd CGN equipment after receiving the first user information, notifies corresponding first
First Service Processing Unit of CGN equipment；
First Service Processing Unit of the first CGN equipment, will be all under first user after receiving notice
The first Service Processing Unit that session information is sent to corresponding 2nd CGN equipment is backed up.
To sum up, the present invention provides a kind of heat backup method, CGN equipment and system, can be real under centralized deployment scene
Now for the two-node cluster hot backup of the CGN equipment rooms of NAT business, service stability is improved, and can realize load balancing.
Description of the drawings
Fig. 1 is the CGN equipment centralized deployment figures of the prior art；
Fig. 2 is the structure diagram of the distributed unit of the CGN equipment of the prior art；
Fig. 3 is the schematic diagram of the CGN equipment of the embodiment of the present invention；
Fig. 4 is the schematic diagram of the hot backup system of the embodiment of the present invention one；
Fig. 5 is the flow chart of the heat backup method of the embodiment of the present invention one；
Fig. 6 is the schematic diagram of the hot backup system of the embodiment of the present invention two；
Fig. 7 is the flow chart of the heat backup method of the embodiment of the present invention two.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention
Embodiment be described in detail.It should be noted that in the absence of conflict, in the embodiment and embodiment in the application
Feature mutually can arbitrarily combine.
In order to realize the two-node cluster hot backup between Distributed C GN equipment, an embodiment of the present invention provides a kind of distributed heats
Backed-up instance, the Hot Spare example are a kind of distributed software objects that generation is configured, and can be configured in a CGN equipment more
A Hot Spare example.The function of the Hot Spare example can include：Detect Service Processing Unit and message retransmission unit failure；
Backup traffic data, service data statistics backup information；Control manages hot standby state etc..
The Hot Spare example can include：
Backed-up instance client is resided in the associated services processing unit of CGN equipment, is responsible for and backed-up instance server-side
Communication, notice Service Processing Module state switching further comprises：Data backup module, for controlling business datum standby
Part；
Backed-up instance server-side is resided in the master control administrative unit of CGN equipment, for managing backed-up instance client,
It realizes activestandby state control and data backup, may further include：
Fault detection module, for detection device failure or linking status；The equipment fault includes but not limited to business
Processing unit failure, message retransmission unit failure；The linking status includes it and elects link with the state that peer device is established；
Logic control module controls master/slave switchover, Jin Ertong for the event of failure according to fault detection module
Backed-up instance client is known to control business data processing and backup.
Above-mentioned Hot Spare example is mounted in CGN equipment of the embodiment of the present invention, as shown in figure 3, the CGN of the present embodiment is set
It is standby to include：Master control administrative unit and multiple Service Processing Units are mounted with the backed-up instance service in master control administrative unit
End and a backed-up instance client are mounted with a backed-up instance client, master control pipe on each Service Processing Unit
Being established between reason unit and each Service Processing Unit has user's backup path.
The master control administrative unit of primary CGN equipment backs up for user information to be sent to spare CGN equipment；
The Service Processing Unit of primary CGN equipment, after receiving the backup of spare CGN equipment notice, by the use
All session informations under family are sent to spare CGN equipment and are backed up.
Fig. 4 is the schematic diagram of the hot backup system of the embodiment of the present invention one, as shown in figure 4, primary CGN equipment and spare
The foundation of CGN equipment has backup path, specifically, the master control management of the master control administrative unit of primary CGN equipment and spare CGN equipment
Being established between unit has user's backup path；The business processing list of the Service Processing Unit of primary CGN equipment and spare CGN equipment
Member is established between any two session backup path.
Fig. 5 is the flow chart of the heat backup method of the embodiment of the present invention one, as shown in figure 5, the method for the present embodiment includes
Below step：
S10, primary CGN equipment master control administrative unit user information be sent to spare CGN equipment back up；
S20, spare CGN equipment master control administrative unit receive user information after be sent to its all business processing list
Member；
S30, spare CGN equipment Service Processing Unit again the user information being respectively received is notified to set to primary CGN
Standby corresponding Service Processing Unit；
S40, primary CGN equipment Service Processing Unit be respectively received spare CGN equipment user information notice after, will
All session informations under the user are sent to spare CGN equipment and are backed up.
The method of the embodiment of the present invention one is described in detail with reference to Fig. 4, the present embodiment can include following
Step：
Step 101, collocation channel links parameter on the backed-up instance of primary CGN equipment and spare CGN equipment, to build
Vertical backup path；
The link parameter can be needed for TCP (Transmission Control Protocol, transmission control protocol)
IP address and port, multiple parameters can be configured, to increase link number, so as to improve backup bandwidth.
Between the master control administrative unit of step 102, the master control administrative unit of primary CGN equipment and spare CGN equipment, pass through
Backed-up instance client sets up user ID channel using channel link parameter；
The Service Processing Unit of step 103, the Service Processing Unit of primary CGN equipment and spare CGN equipment between any two,
Session backup path is set up using channel link parameter by backed-up instance client；
Step 104, the master control administrative unit of primary CGN equipment back up user by backed-up instance client to stand-by equipment
User information (is sent to stand-by equipment) by information, and the master control administrative unit of stand-by equipment receives user information and is synchronized to reality
Each Service Processing Unit associated by example；
The user information further comprises：
For DS-Lite (light-weight dual-stack tunnel) NAT technology, user information includes but not limited to：IPv6
Prefix and subnet prefix length, tunnel information, VPN (Virtual Private Network, Virtual Private Network) information；
For NAT64, user information includes but not limited to：IPv6 prefixes and subnet prefix length, NAT64 prefixes, VPN letters
Breath；
For NAT44, user information includes but not limited to：IPv4 addresses, VPN information；
The tunnel information includes at least User IP v6 addresses, tunnel destination IP v6 addresses, can also be to include but unlimited
In：Tunnel MTU (Maximum Transmission Unit, maximum transmission unit), tunnel type (GRE (Generic
Routing Encapsulation, generic route encapsulation), common 4-in-6 (IPv4-in-IPv6 tunnels), IPv6IPSEC (IP
Safety) etc.).
Step 105, stand-by equipment Service Processing Unit receive user information, and pass through session backup path notice master
With the Service Processing Unit of equipment；
Step 106, host apparatus Service Processing Unit receive stand-by equipment user information notice, then back up the use
All session informations under family；
The session information further comprises：
PCP ECHO (PCP (Port Control Protocol, port control protocols) response) information, network address
Session information, ALG (Application Level Gateway, application layer gateway) information are converted, wherein,
PCP ECHO are the sequential values that PCP server-sides are responded to PCP clients in PCP, which can timing in PCP server-sides
Automatic to increase, PCP clients can dynamically update and preserve the value, when finding that local value is more than the ECHO values of server-side, then
Think that failure occurred for server-side, then reenter fault recovery flow.
Network address translation session information, including：Private network IPv4 addresses, public network IP v4 addresses, port or port block message,
Protocol type and its owning user identification information；
ALG (Application Level Gateway, application layer gateway) information, including：ALG controls information (such as
TCP sequence number offset information), ALG protocol types and its owning user identification information.
The user identity information can be user information or user's unique mark or keyword；
Step 107, stand-by equipment Service Processing Unit receive the session information of host apparatus.
Method through this embodiment can realize two-node cluster hot backup for CGN equipment.
Fig. 6 is the schematic diagram of the hot backup system of the embodiment of the present invention two, as shown in fig. 6, primary CGN equipment and spare
CGN equipment can distinguish the above-mentioned Hot Spare example of two, device, specifically, it is real two backups can be configured in host apparatus
Example, one is configured to primary backed-up instance, is associated with a part of Service Processing Unit and physical interface, another is configured to spare standby
Part example, is associated with another part Service Processing Unit and physical interface；Can stand-by equipment be configured two backed-up instances, one
Standby backup example is configured to, is associated with a part of Service Processing Unit and physical interface, another is configured to primary backed-up instance,
It is associated with another part Service Processing Unit and physical interface.
Two groups of backed-up instances are logically independent operation, and active-standby switch is independent of each other, and make two equipment that can handle industry simultaneously
Business, so as to fulfill load balancing.
Fig. 7 is the flow chart of the heat backup method of the embodiment of the present invention two, as shown in fig. 7, comprises below step：
A primary backed-up instance is configured in step 601, CGN equipment 1, and for this example, CGN equipment 1 is host apparatus；
A standby backup example is configured in step 602, CGN equipment 2, and for this example, CGN equipment 2 is stand-by equipment；
Session is established between the backed-up instance client of the master control administrative unit of step 603, CGN equipment 1 and CGN equipment 2
Backup path；
It is established between the backed-up instance client of each Service Processing Unit of step 604, CGN equipment 1 and CGN equipment 2
Session backup path；
The associated user information of the backed-up instance of generation is synchronized to respectively by step 605, the master control administrative unit of CGN equipment 1
A Service Processing Unit simultaneously preserves；
Step 606, the master control administrative unit of CGN equipment 1 back up the associated user information of the backed-up instance of generation to setting
Standby 2 master control administrative unit simultaneously preserves；
The user information of backup is synchronized to each Service Processing Unit by step 607, the master control administrative unit of CGN equipment 2
And it preserves；
Step 608, CGN equipment 2 each Service Processing Unit user information is notified to the corresponding industry of CGN equipment 1
Business processing unit；
Step 609, CGN equipment 1 each Service Processing Unit all session informations under user backed up give CGN equipment
2 Service Processing Unit.
Above-mentioned steps are the backup flow being configured under a backed-up instance, and it is real that the present invention can be reconfigured another backup
Example, is configured to standby backup example for equipment 1, primary backed-up instance is configured to for equipment 2, and workflow is same as above,
Two groups of backed-up instances are independent of each other, and independent operating solves the problems, such as two-shipper load balancing.
Certainly, multiple Hot Spare examples, CGN equipment 1 and CGN equipment 2 can also be configured in the CGN equipment of the present embodiment
Main and standby relation each other can be configured to such as Fig. 6, at the same CGN equipment 1 and CGN equipment 3 can be also configured to again main and standby relation or
Main and standby relation each other.
In conclusion by the present invention can realize under three-layer network environment the dual-host backup of Distributed C GN equipment and
Load balancing.
One of ordinary skill in the art will appreciate that all or part of step in the above method can be instructed by program
Related hardware is completed, and described program can be stored in computer readable storage medium, such as read-only memory, disk or CD
Deng.Optionally, all or part of step of above-described embodiment can also be realized using one or more integrated circuits.Accordingly
Ground, the form that hardware may be used in each module/unit in above-described embodiment are realized, can also use the shape of software function module
Formula is realized.The present invention is not limited to the combinations of the hardware and software of any particular form.
It these are only the preferred embodiment of the present invention, certainly, the present invention can also have other various embodiments, without departing substantially from this
In the case of spirit and its essence, those skilled in the art make various corresponding changes in accordance with the present invention
And deformation, but these corresponding changes and deformation should all belong to the protection domain of appended claims of the invention.
Claims (9)
1. a kind of heat backup method, including：
First user information is sent to the 2nd CGN by the master control administrative unit of the first carrier class networks address conversion CGN equipment
Equipment is backed up；
After first Service Processing Unit of the first CGN equipment receives the backup notice of the 2nd CGN equipment, by first user
Under all session informations be sent to the 2nd CGN equipment and backed up；
After the master control administrative unit of first CGN equipment receives the second user information of the 3rd CGN equipment, by second user information
It is synchronized to the second Service Processing Unit of the first CGN equipment；
After second Service Processing Unit of the first CGN equipment receives second user information, it is logical to send backup to the 3rd CGN equipment
Know, wherein,
3rd CGN equipment and the 2nd CGN equipment for same equipment or
3rd CGN equipment is different equipment from the 2nd CGN equipment；
Each in first CGN equipment, the 2nd CGN equipment and the 3rd CGN equipment is host apparatus and stand-by equipment, and
Energy while processing business.
2. the method as described in claim 1, it is characterised in that：The master control administrative unit of first CGN equipment believes the first user
During the 2nd CGN equipment that breath is sent to is backed up, further include：
First user information is synchronized to the first business processing list of the first CGN equipment by the master control administrative unit of the first CGN equipment
Member.
3. the method as described in claim 1, it is characterised in that：
If the first CGN equipment uses light-weight dual-stack tunnel DS-Lite NAT technologies to carry out network address translation, then
First user information includes：IPv6 prefixes, subnet prefix length, tunnel information and Virtual Private Network information, the tunnel letter
Breath includes at least User IP v6 addresses and tunnel destination IP v6 addresses；
Such as the first CGN equipment carries out message conversion using the NAT technology NAT64 of IPv6 to IPv4, then the first user
Information includes：IPv6 prefixes and subnet prefix length, NAT64 prefixes and Virtual Private Network information；
Such as the first CGN equipment carries out message conversion using the NAT technology NAT44 of IPv4 to IPv4, then the first user
Information includes：IPv4 addresses and Virtual Private Network information.
4. the method as described in claim 1, it is characterised in that：The session information includes：
Port control protocols response value information, network address translation session information and application layer gateway ALG information, wherein,
The network address translation session information includes：Private network IPv4 addresses, public network IP v4 addresses, port or port block message,
Protocol type and its owning user identification information；
The ALG information includes：ALG controls information, ALG protocol types and its owning user identification information.
5. a kind of distribution carrier class networks address conversion CGN equipment, including：Master control administrative unit, the first business processing list
Member and the second Service Processing Unit, being established between the master control administrative unit and a specified CGN equipment has backup path, the first industry
Being established between business processing unit and the specified CGN equipment has session backup path, wherein,
The master control administrative unit backs up for the first user information to be sent to specified CGN equipment；
First Service Processing Unit, after the backup notice for receiving the specified CGN equipment, will be under first user it is all
Session information is sent to the specified CGN equipment and is backed up；
The master control administrative unit, it is after being additionally operable to the second user information for receiving the 3rd CGN equipment, second user information is same
It walks to the second Service Processing Unit of the first CGN equipment；
Second Service Processing Unit of the first CGN equipment after receiving second user information, is sent to the 3rd CGN equipment
Backup notice, wherein,
3rd CGN equipment and the 2nd CGN equipment for same equipment or
3rd CGN equipment is different equipment from the 2nd CGN equipment；
Wherein, the master control administrative unit, the first Service Processing Unit and the second Service Processing Unit are respectively the first operator
Master control administrative unit, the first Service Processing Unit and the second Service Processing Unit of grade network address translation CGN equipment, the finger
CGN equipment is determined for the 2nd CGN equipment；
Each in first CGN equipment, the 2nd CGN equipment and the 3rd CGN equipment is host apparatus and stand-by equipment, and
Energy while processing business.
6. CGN equipment as claimed in claim 5, it is characterised in that：
First user information is sent to during the specified CGN equipment is backed up and also uses by the master control administrative unit
In the first user information is synchronized to the first Service Processing Unit by the user ID channel pre-established.
7. CGN equipment as claimed in claim 5, it is characterised in that：
If the CGN equipment uses light-weight dual-stack tunnel DS-Lite NAT technologies to carry out network address translation, then
First user information includes：IPv6 prefixes, subnet prefix length, tunnel destination IP v6 addresses and Virtual Private Network information；
Such as CGN equipment carries out message conversion using the NAT technology NAT64 of IPv6 to IPv4, then the first user
Information includes：IPv6 prefixes and subnet prefix length, NAT64 prefixes and Virtual Private Network information；
Such as CGN equipment carries out message conversion using the NAT technology NAT44 of IPv4 to IPv4, then the first user
Information includes：IPv4 addresses and Virtual Private Network information.
8. CGN equipment as claimed in claim 5, it is characterised in that：The session information includes：
PCP responses value information, network address translation session information and application layer gateway ALG information, wherein,
The network address translation session information includes：Private network IPv4 addresses, public network IP v4 addresses, port or port block message,
Protocol type and its owning user identification information；
The ALG information includes：ALG controls information, ALG protocol types and its owning user identification information.
9. a kind of hot backup system, including：First carrier class networks address conversion CGN equipment and the 2nd CGN equipment, wherein,
Being established between the master control administrative unit of first CGN equipment and the master control administrative unit of the 2nd CGN equipment has backup path, the
Being established between first Service Processing Unit of one CGN equipment and the first Service Processing Unit of the 2nd CGN equipment has session backup
Channel, wherein,
The master control administrative unit of first CGN equipment backs up for the first user information to be sent to the 2nd CGN equipment；
The master control administrative unit of 2nd CGN equipment after receiving the first user information, passes through the user ID pre-established
First user information is synchronized to the first Service Processing Unit of the 2nd CGN equipment by channel；
First Service Processing Unit of the 2nd CGN equipment after receiving the first user information, notifies corresponding first CGN
First Service Processing Unit of equipment；
First Service Processing Unit of the first CGN equipment, after receiving notice, by all sessions under first user
The first Service Processing Unit that information is sent to corresponding 2nd CGN equipment is backed up；
First CGN equipment further includes the second Service Processing Unit,
The master control administrative unit of the first CGN equipment, will after being additionally operable to the second user information for receiving the 3rd CGN equipment
Second user synchronizing information gives the second Service Processing Unit of the first CGN equipment；
Second Service Processing Unit of the first CGN equipment after receiving second user information, is sent to the 3rd CGN equipment
Backup notice, wherein,
3rd CGN equipment and the 2nd CGN equipment for same equipment or
3rd CGN equipment is different equipment from the 2nd CGN equipment；
Each in first CGN equipment, the 2nd CGN equipment and the 3rd CGN equipment is host apparatus and stand-by equipment, and
Energy while processing business.
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| CN201110448541.7A CN102447703B (en) | 2011-12-28 | 2011-12-28 | A kind of heat backup method and system, CGN equipment |
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| CN201110448541.7A CN102447703B (en) | 2011-12-28 | 2011-12-28 | A kind of heat backup method and system, CGN equipment |
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| CN105472049B (en) * | 2014-08-21 | 2020-01-10 | 中兴通讯股份有限公司 | CGN backup protection method and device for carrier-grade network address conversion |
| CN107743098A (en) * | 2017-11-23 | 2018-02-27 | 新华三技术有限公司 | The method, apparatus and realization device of load balancing between CGN plates |
| CN108200223B (en) * | 2017-12-28 | 2021-05-07 | 新华三技术有限公司 | CGN backup method and device for carrier-grade network address conversion equipment |
| CN111131530B (en) * | 2018-11-01 | 2022-04-01 | 中国移动通信集团河南有限公司 | Carrier-class network address conversion method and device |
| CN113206754B (en) * | 2021-03-29 | 2022-07-12 | 新华三信息安全技术有限公司 | Method and device for realizing load sharing |
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| CN101557317A (en) * | 2009-05-26 | 2009-10-14 | 杭州华三通信技术有限公司 | Active dialogue backup system, equipment and method in dual-server hot-backup network |
| CN102142978A (en) * | 2010-08-04 | 2011-08-03 | 华为技术有限公司 | Data backup transmission processing method, device and system |
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