CN103780470B - A kind of information synchronization method of IS IS and device - Google Patents
A kind of information synchronization method of IS IS and device Download PDFInfo
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- CN103780470B CN103780470B CN201410005756.5A CN201410005756A CN103780470B CN 103780470 B CN103780470 B CN 103780470B CN 201410005756 A CN201410005756 A CN 201410005756A CN 103780470 B CN103780470 B CN 103780470B
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Abstract
The present invention provides a kind of information synchronization method of IS IS, applies on the edge device of station network, including：Synchronous information will be needed under each network example in this website, carry out burst according to the network example belonging to which, be encapsulated as LSP messages；The network example configured in this website is notified neighbor site；Receive the synchronizing information request from neighbor site, described information synchronization request carries the neighbor site according to described website and the network example of each self-configuring of the neighbor site, determined by described website and neighbor site network example of configuration jointly information；The LSP messages being associated with the network example of common configuration in this website and the neighbor site are sent to the neighbor site.By technical scheme, the data volume that transmits between website is reduced, and edge device needs message to be processed.
Description
Technical field
The present invention relates to network communication technology field, more particularly to a kind of information synchronization method of IS-IS and device.
Background technology
With the high speed development of the Internet, enterprise increasingly tends to set up data center in different geographical, by allowing
Virtual machine carries out migration to realize load balancing and high reliability on the physical server of these strange land data centers.In order that
Transition process is transparent to user, it is impossible to change the IP address of virtual machine, and this needs to realize double layer intercommunication between the data center of strange land,
So as to migration is limited in double layer network.
Various two-layer VPNs at present（Virtual Private Network, VPN (virtual private network)）Technology can cross over public network
（Typically carrier network）Realize the double layer intercommunication between two physical sites.EVI（Ethernet Virtual
Interconnection, Ethernet virtualization interconnection）Technology is a kind of skill of data-oriented center difference website double layer intercommunication
Art, its solution is by core network（Public network）And station network（Private network）Composition, wherein station network pass through ED（Edge
Device, edge device）Access Core Network.EVI is using the IS-IS after extension（The Yu Nei roads of Intermediate System-to-Intermediate System
By Information Exchange Agreement）The synchronization of the information such as MAC Address and list item between website is realized as control plane agreement.Due to
IS-IS controls message and transmits in public network, and how as far as possible few occupied bandwidth just becomes the factor for needing consideration.
Content of the invention
In view of this, the present invention provides a kind of information synchronization method of IS-IS, applies the edge device in station network
On, including：
Synchronous information will be needed under each network example in this website, carry out burst according to the network example belonging to which, seal
Fill as LSP messages；
The network example configured in this website is notified neighbor site；
The synchronizing information request from neighbor site is received, described information synchronization request carries the neighbor site according to institute
State the network example of this website and each self-configuring of the neighbor site, determined by described website match somebody with somebody with the neighbor site jointly
The information of the network example that puts；
The LSP messages being associated with the network example of common configuration in this website and the neighbor site are sent to the neighbours
Website.
The information synchronization method of another kind of IS-IS that the present invention is provided, applies on the edge device of station network, bag
Include：
The notice of neighbor site is received, including the network example configured in the neighbor site；
According to this website and the network example of each self-configuring of neighbor site, determine that this website is configured jointly with neighbor site
Network example；
Synchronizing information request, request and this website and the network example of the common configuration of the neighbor site are sent to neighbor site
Associated LSP messages；
The LSP messages that neighbor site is returned according to described information synchronization request are received, the net of wherein this site configuration is preserved
The information of network example, wherein, the LSP messages are that the neighbor site will need synchronous information under its each network example, press
Obtain after burst is carried out according to the network example belonging to information.
Present invention also offers a kind of synchronizing information device of IS-IS, applies on the edge device of station network, bag
Include：
Encapsulation unit, for will need synchronous information under each network example in this website, according to the network reality belonging to which
Example carries out burst, is encapsulated as LSP messages；
Transmitting element is prepared, the network example for will configure in this website notifies neighbor site；
Request reception unit, asks for the synchronizing information from neighbor site, and described information synchronization request carries this
Neighbor site according to described website and the network example of each self-configuring of the neighbor site, determined by described website with should
The information of the network example that neighbor site is configured jointly；
Content sending unit, for be associated the network example of configuration common with this website and the neighbor site
LSP messages are sent to the neighbor site.
The synchronizing information device of another kind of IS-IS that the present invention is provided, applies on the edge device of station network, bag
Include：
Receiving unit is prepared, for receiving the notice of neighbor site, including the network reality configured in the neighbor site
Example；
Example determining unit, for the network example according to this website and each self-configuring of neighbor site, determines this website
The network example for being configured with neighbor site jointly；
Contents request module, for sending synchronizing information request, request and this website and the neighbor site to neighbor site
The LSP messages that the network example of common configuration is associated；
Content receipt unit, for receiving the LSP messages that neighbor site is returned according to described information synchronization request, preserves which
The information of the network example of middle site configuration, wherein, the LSP messages are that the neighbor site will be needed under its each network example
Synchronous information is wanted, and is obtained after burst being carried out according to the network example belonging to information.
From above technical scheme, between website, transmission is common with both sides by only generating according to network example for the present invention
With the associated LSP messages of the network example of configuration, for the IS-IS of most many examples, and not all website is all matched somebody with somebody
Identical network example is put, the present invention can reduce the data volume that transmits between website under this situation, and can
Reducing edge device needs message to be processed.
Description of the drawings
Fig. 1 is a kind of networking structure figure of application scenarios of the present invention；
Fig. 2 is the information synchronization method flow chart of edge device A in the embodiment of the present invention one；
Fig. 3 is the information synchronization method flow chart of edge device B in the embodiment of the present invention one；
Fig. 4 is the information synchronization method flow chart of edge device A in the embodiment of the present invention two；
Fig. 5 is the information synchronization method flow chart of edge device B in the embodiment of the present invention two；
Fig. 6 is a kind of hardware structure diagram of edge device；
Fig. 7 is a kind of building-block of logic of synchronizing information device that the present invention is provided；
Fig. 8 is the building-block of logic of another kind of synchronizing information device that the present invention is provided.
Specific embodiment
As a kind of tunneling technique of " MAC in IP ", it is core network and in addition to edge device the characteristics of EVI is maximum
Station network need not be changed, and only change ED and can achieve expanded function of the virtual LAN VLAN between different websites,
Independent EVI network examples are constituted on these extensions VLAN, is identified using Network ID, global Unified number, certain sets
Forward in the VLAN of standby different EVI network examples mutually isolated.
The many examples of EVI network supports.When the flow of different VLAN needs to extend between different websites, can adopt
Multiple EVI network examples are realizing.Each EVI network example carrys out unique mark using Network ID.Same EVI networks reality
All edge devices in example must configure identical Network ID.The Network ID of different network examples are different, with
In one example, all of edge device must configure identical Network ID.The extension VLAN of different EVI network examples is not
There can be overlap.The extension VLAN configured on all edge devices in same EVI network examples must be consistent.Different EVI realities
The extension VLAN of example is different, and flow forwards completely isolated.
For example, 3 EVI network examples are configured with an EVI network, wherein, EVI network examples 1 carry extension
The flow of VLAN100 and VLAN101, EVI network examples 2 carry the flow of extension VLAN4000, and EVI network examples 3 are carried
The flow of extension VLAN50～VLAN80.
EVI examples can be regarded as virtual switch, support two layers of forwarding process of standard.Traditional double layered communication is relied on
Mac address table is addressed, and EVI networks are no exception.MAC address learning in website is consistent with common MAC address learning mechanism,
And the MAC Address between website exchanges the IS-IS after can then adopting extension（Intermediate system to
Intermediate system, the intra-area routes Information Exchange Agreement of Intermediate System-to-Intermediate System）.
According to Intermediate System to Intermediate System, after each website of EVI networks sets up is-is neighbor relation, all of edge device
Local MAC is practised, LSP is produced according to the MAC Address for being learnt（Link State PDUs, Link State PDUs）Message sends
Give every other website；Meanwhile, edge device receives the LSP messages from other websites, from the MAC ground of learning remote station
Location；When study is to locally new MAC Address, edge device is on EVI links corresponding with each opposite end website to distance station
Point advertised address information.After synchronously completing, in the mac address table formed on website edge device, purpose MAC is distal end
In website in the MAC Address list item of equipment, outgoing interface connects for EVI（EVI Link）Corresponding logic interfacing.
In the EVI networks shown in Fig. 1, inside website 1, there is VLAN2 to 5, by edge device ED1 Access Core Networks；
There is VLAN1 to 4 inside website 2, by edge device ED2 Access Core Networks；There is VLAN3 to 5 inside website 3, by edge
Equipment ED3 Access Core Networks.VLAN1 to 5 is the extension VLAN of cross-site intercommunication, is so transported on ED1, ED2, ED3 altogether
Go 5 EVI examples.ED1, ED2, ED3 are by being carried on GRE（Generic Routing Encapsulation, general road
By encapsulating）Virtual EVI links on tunnel are direct-connected two-by-two.
In prior art, when the MAC address learning between website and synchronization is carried out, locally study is arrived by edge device
MAC Address is encapsulated in LSP messages, is all sent to neighbor site.
Still by taking the network shown in Fig. 1 as an example, ED1 includes MACs of the VLAN2 in 5 to the LSP messages that ED2 and ED3 sends
Address, ED2 include MAC Address of the VLAN1 in 4 to the LSP messages that ED1 and ED3 sends.And in fact, ED1 need not be learned
The MAC Address in VLAN1 is practised, ED2 need not learn the MAC Address in VLAN5, these unnecessary information are exchanged and can cause core
The increase of heart net flow, when in VLAN, number of devices is greatly or the VLAN of configuration more disperses in each website, edge device
LSP messages useless in a large number can be received, the disposal ability of edge device can be also affected.
The embodiment of the present invention proposes a kind of new IS-IS information synchronization methods to solve the above problems.The embodiment of the present invention
The method of proposition is applied on the edge device of station network, below with the edge device A of website A and website A have neighbours close
Handling process on the edge device B of the website B of system being described, skilled in the art realises that, these flow processs can be answered
It is used on any website with neighborhood, and any one of these websites is to multiple edge devices.
It should be noted that the network example in the application can be VLAN, or VxLAN（Virtual
Extensible VLAN, virtual expansible VLAN）；Can also be EVI network examples, or other have to enter using IS-IS
The synchronous network example of row information.It can be edge device at this to need the example information synchronized between website in the application
MAC Address, or need synchronous other information that in ground website, study is arrived, such as study Dao IP roads in site-local
By information, ARP information etc..
Embodiment one（Refer to Fig. 2 and Fig. 3）：
On edge device A, step SA110 will need synchronous information under each network example in this website, according to its institute
The network example of category carries out burst, is encapsulated as LSP messages.
To the all-network example run in edge device A, which needs synchronous informational capacity to exceed a LSP message
The greatest length of transmission is allowed, so that burst is carried out to information, is encapsulated as multiple LSP messages to be transmitted.To need
Synchronous information carries out burst according to the network example belonging to which, the information for belonging to heterogeneous networks example can be divided into difference
Burst, i.e., need synchronous information to be divided into one to multiple bursts each network example respectively；It is also possible that each
The information carried in burst belongs to as far as possible few network example.
Each burst is encapsulated as a LSP message.So, each LSP message and the network belonging to its carrying information
Example has incidence relation.
On edge device A, the network example configured in this website is notified neighbor site by step SA120.Edge device
The all-network example run in website A is informed website B by A.
On edge device B, step SB210 receives the notice of neighbor site, including configuration in the neighbor site
Network example.Edge device B receives the notice from edge device A, learns the all-network example of operation in website A.
On edge device B, step SB220, according to this website and the network example of each self-configuring of neighbor site, determines
The network example that this website is configured jointly with neighbor site.Edge device B is informed in website from the notice from edge device A
The network example of operation in A, the all-network example of operation in comparison site A and website B are obtained common in website A and website B
The network example of configuration.
On edge device B, step SB230 sends synchronizing information request, request and this website and the neighbour to neighbor site
Occupy the associated LSP messages of the network example of the common configuration of website.
Edge device B is obtained in website A and website B after the network example of common configuration, by these network examples sent out
Website A is informed in the synchronizing information request that send.
On edge device A, step SA130 receives neighbor site according to the network example life configured in described website
Into synchronizing information request, described information synchronization request carries the neighbor site according to described website and the neighbor site
The network example of each self-configuring, determined by described website and neighbor site network example of configuration jointly information.
On edge device A, step SA140, by the network example phase with common configuration in this website and the neighbor site
The LSP messages of association are sent to the neighbor site.
Edge device A receives the synchronizing information request of website B, learns the network reality being operated together in website A and website B
The LSP messages with the network example being operated together with incidence relation are sent to website B by example.
On edge device B, step SB240 receives neighbor site and is reported according to the LSP that described information synchronization request is returned
Text, preserves the information of the wherein network example of this site configuration, and wherein, the LSP messages are the neighbor sites by its each net
Synchronous information is needed under network example, is obtained after carrying out burst according to the network example belonging to information.
Edge device B receives the LSP messages from website A, parses the information of the network example of configuration in website B, protects
Deposit to local, so as to realize information by website A to website B synchronizations.
Used as a kind of optional embodiment, the above flow process that runs on edge device A and edge device B can be simultaneously
Operate on an edge device, the information of this website to be sent to other websites, and receive the information of other websites
Synchronous.
As another kind of optional embodiment, on edge device B, following steps are may further include：
Information that will be synchronous by this website domestic demand carries out burst according to the network example of the configuration belonging to which, is encapsulated as LSP
Message；
Send the LSP being associated with the network example for being configured in this website and in the neighbor site jointly to report to neighbor site
Text.
In other words, due to edge device B it has been found that in website A and website B common configuration network example, to website B
The information for needing to be synchronized to website A of these network examples interior, actively can send what which generated to website A from edge device B
It is associated with the LSP messages of these network examples, it is also possible to realize the bi-directional synchronization of information.
If having increased the network example of configuration in website A newly, on edge device A, following steps are may further include：
The notice of each neighbor site is received, including the network example configured in the neighbor site；
When the newly-increased network example of this website, the newly-increased network example of this website is notified neighbor site；And, will be newly-increased
The Information encapsulation that the needs of network example are synchronous is LSP messages, is sent to the neighbor site for being configured with the newly-increased example；And to matching somebody with somebody
The LSP messages that the neighbor site request of the newly-increased example is associated are equipped with the newly-increased example.
Embodiment two（Refer to Fig. 4 and Fig. 5）：
The difference of embodiment two and embodiment one is essentially consisted in, and the segmental identification using each LSP message is referring to
It is scheduled on transmission LSP messages between website.To the step identical with embodiment one, the specific descriptions of embodiment one are referred to, is no longer gone to live in the household of one's in-laws on getting married
State.
On edge device A, step SA310 will need synchronous information under each network example in this website, according to its institute
The network example of category carries out burst, is encapsulated as LSP messages.Each LSP message has respective segmental identification, edge device A to set up
LSP message fragments mark and the incidence relation of network example.
On edge device A, step SA320, by the network example of configuration in this website and its burst with LSP messages
The incidence relation of mark notifies neighbor site.Edge device A by website A run all-network example and with these nets
The associated LSP message fragments mark of network example informs website B.
On edge device B, step SB410 receives the notice of neighbor site, including configuration in the neighbor site
Network example, and the incidence relation with the segmental identification of LSP messages.Edge device B receives the notice from edge device A,
Learn the LSP message fragments mark of the all-network example of operation and its association in website A.
On edge device B, step SB420, according to this website and the network example of each self-configuring of neighbor site, determines
The network example that this website is configured jointly with neighbor site.
On edge device B, step SB430 sends synchronizing information request, request and this website and the neighbour to neighbor site
Occupy the associated LSP messages of the network example of the common configuration of website；Synchronizing information request in also carry with this website and this
The LSP message fragments mark that the network example that neighbor site is configured jointly is associated.
On edge device A, step SA330 receives the letter that neighbor site is generated according to the network example configured in website A
Breath synchronization request, therefrom parses the LSP message fragments mark asked by the neighbor site, i.e., with this website and the neighbor site
The associated LSP message fragments mark of the network example of interior common configuration.
On edge device A, the LSP messages of the segmental identification that there is the neighbor site to be asked are sent by step SA340
Give the neighbor site.
On edge device B, step SB440 receives neighbor site and is reported according to the LSP that described information synchronization request is returned
Text, preserves the information of the wherein network example of this site configuration, and wherein, the LSP messages are the neighbor sites by its each net
Synchronous information is needed under network example, is obtained after carrying out burst according to the network example belonging to information.
Identical with embodiment one, between website, the bi-directional synchronization of information can pass through in operation simultaneously on an edge device
State flow process on edge device A and edge device B to realize, it is also possible to configure knowing in website A by making edge device B
Network example after, the LSP messages for being associated with website A and website B the network example of common configuration are sent to website A actively
To realize.
Hereinafter the flow process of embodiment two is applied in many example networks of EVI shown in Fig. 1, which is further illustrated specifically real
Existing.In this example, with VLAN as example, in this website for being learnt using on edge device MAC Address as needing synchronous information,
With burst number as segmental identification, identical handling process on each edge device, is run：
（1）, each edge device build LSP messages according to VLAN
Each edge device learns the MAC Address of site-local, and these MAC Address are generated according to the VLAN belonging to which
LSP bursts, in different VLAN study to MAC Address be encapsulated in different LSP messages.By LSP message labels, and set up
The incidence relation of LSP bursts number and VLAN.
In network shown in Fig. 1, it is assumed that ED1 generates 6 LSP messages, and as follows with the incidence relation of burst number：
VLAN2：ED1.LSP1ED1.LSP2
VLAN3：ED1.LSP3ED1.LSP4
VLAN4：ED1.LSP5
VLAN5：ED1.LSP6
Assume that ED2 generates 7 LSP messages, and as follows with the incidence relation of burst number：
VLAN1：ED2.LSP1ED2.LSP2
VLAN2：ED2.LSP3ED2.LSP4ED2.LSP5
VLAN3：ED2.LSP6
VLAN4：ED2.LSP7
Often row represents the LSP fragment messages of certain VLAN association above, and for example, ED1.LSP1 is to represent dividing for ED1 generations
Piece number for 1 LSP messages, the LSP messages are associated with VLAN2.
（2）, the VLAN configurations that notify other side local between neighbor site, and the incidence relation with LSP message fragments number
According to existing Intermediate System to Intermediate System, after neighborhood being set up between website, mutually send CSNP between edge device
（Complete Sequence Number PDUs, full sequence numbers message）, carry each complete LSP summary infos.Edge sets
Standby can just LSP messages segmental identification write LSP summary infos, then by the network example configured in this website and its
With the incidence relation of LSP summary infos, in CSNP messages, it is sent to neighbor site.
As a kind of optional embodiment of the present invention, TLV is increased in LSP summary infos newly（Type-Length-
Value, type-length-value）Type, when encapsulating LSP summary infos in CSNP, carries associating for each LSP summary and VLAN
Information, packing forms can be as follows：
The newly-increased LSP summary TLV of Type=
Len=length
VLAN-ID（VLAN is identified）Information：The summary of LSP bursts 1, the summary of LSP bursts 2, LSP bursts 3 are plucked
Will ...（For representing the summary info of the LSP messages associated by the corresponding VLAN of the VLAN-ID, include in summary info
LSP message fragments number.）
In network shown in Fig. 1, ED1 sends CSNP messages to ED2, notifies VLAN2～5 of this site configuration of ED1, and
The corresponding LSP message fragments number of each VLAN.Equally, ED2 sends CSNP messages to ED1, and ED1 learns configuration VLAN1 in website 2
～4, and it is associated with the LSP message fragments number of each VLAN.
（3）, after edge device receives the CSNP of neighbor site, selective request LSP messages
After edge device receives the CSNP messages of neighbor site, wherein all of LSP summary infos and corresponding are parsed
VLAN, obtains the LSP summary set of each VLAN in CSNP, travels through each VLAN, be handled as follows successively：
If this website also provided identical VLAN for extension VLAN, synchronizing information request is sent to neighbor site,
Will the corresponding LSP summary infos of the VLAN（Including the LSP message fragments number with VLAN with incidence relation）Carry
PSNP（Partial Sequence Number PDUs, partial order row number message）In be sent to neighbor site request corresponding
LSP messages.Also, these LSP summary infos are arranged on LSDB（LinkStateDataBase, LSD）In.
If locally not configuring corresponding VLAN for extension VLAN, by these LSP summary infos in LSDB.
In the network shown in fig. 1, ED1 sends PSNP messages to ED2, and wherein LSP summary infos include：
VLAN2：ED2.LSP3ED2.LSP4ED2.LSP5
VLAN3：ED2.LSP6
VLAN4：ED2.LSP7
MAC Address synchronization is asked to ED2.Similar, ED2 sends PSNP message request synchronizing informations to ED1, wherein carries
The burst number that VLAN2～4 and its LSP messages generated with ED1 are associated.
（4）, after edge device receives the PSNP of neighbor site, optionally send LSP messages.
After edge device receives the PSNP messages of neighbor site, wherein all of LSP summary infos are parsed（Including with
The incidence relation of VLAN）, the LSP summary set of each VLAN in PSNP is obtained, each VLAN is traveled through, is located as follows successively
Reason：
If this website also provided identical VLAN for extension VLAN, each LSP message corresponding for the VLAN is sent out
Give neighbor site.
In network shown in Fig. 1, ED2 receives the PSNP messages of ED1, learns which asks the MAC of VLAN2～4 ground after parsing
Location synchronization, then be sent to ED1 by LSP3～7 for being associated with VLAN2～4 that this website is generated.Similar, ED1 will also be associated with
LSP1～5 that this website of VLAN2～4 is generated are sent to ED2.
（5）, receive the LSP messages of neighbor site after, edge device parses wherein complete mac address information, and will
Which is arranged in LSDB.
In network shown in Fig. 1, the MAC Address in the LSP messages of reception is parsed by ED1 and ED2, is preserved to local
LSDB in, complete the study to MAC Address in the website of opposite end.It can be seen that, send between ED1 and ED2 relative in prior art
Whole LSP messages do not retransmit unnecessary LSP messages in the present invention, reduce the information transfer needed for synchronization to other side
Amount, also saves the time that edge device processes unnecessary LSP messages.
（6）, when newly-increased extension VLAN is configured in website, edge device traversal LSDB in each other website LSP
Summary info, is processed successively：
If the VLAN of the LSP associations is equal to the VLAN for locally increasing configuration newly, and in LSDB, the LSP is only mounted with that LSP is plucked
Information is wanted without installing corresponding MAC Address, then by the LSP summary infos（Including the incidence relation with VLAN）Encapsulation
Neighbor site is sent in PSNP messages.In this manner it is possible to obtain other websites in the LSP messages that replys from neighbor site
The mac address table of the new extensions VLAN for practising.
（7）, when in website, existing extension VLAN is deleted in configuration, edge device travels through each other website in LSDB
LSP summary infos, are processed successively：
If the VLAN of the LSP associations is equal to the VLAN for locally deleting configuration, and the LSP is mounted with that in LSDB LSP is detailed
Thin information（Include mac address table）, then the details of the LSP are deleted in LSDB, only remaining summary info.This process
Flow process is identical with existing Intermediate System to Intermediate System.
Corresponding with the realization of above-mentioned flow process, present invention also offers IS-IS synchronizing information devices, operate in the side of station network
On edge equipment, the device can be realized by software, it is also possible to realized by way of hardware or software and hardware combining.With software
As a example by realization, as the device on a logical meaning, the present invention be by the CPU of edge device by non-volatile memories wherein
Corresponding computer program instructions read what operation in internal memory was formed.From for hardware view, except the CPU shown in Fig. 6, interior
Deposit and nonvolatile memory outside, edge device generally also includes other hardware, is such as responsible for the forwarding for processing Message processing
Chip etc.；For from hardware configuration, the equipment is also possible to be distributed equipment, potentially includes multiple interface cards with hard
Part aspect carries out the extension of Message processing.
Fig. 7 show the present invention offer a kind of IS-IS synchronizing informations device, including encapsulation unit, prepare transmitting element,
Request reception unit and content sending unit, wherein：Encapsulation unit is synchronous for will need under each network example in this website
Information, carries out burst according to the network example belonging to which, is encapsulated as LSP messages；Preparing transmitting element is used for match somebody with somebody in this website
The network example that puts notifies neighbor site；Request reception unit is used for asking from the synchronizing information of neighbor site, described information
Synchronization request carries the neighbor site according to described website and the network example of each self-configuring of the neighbor site, is determined
Described website and neighbor site network example of configuration jointly information；Content sending unit be used for will with this website and
In the neighbor site, the associated LSP messages of the network example of common configuration are sent to the neighbor site.
In a kind of optional embodiment, configure transmitting element specifically for will in this website configure network example,
And its neighbor site is notified with the incidence relation of the segmental identification of LSP messages；Also include in described information synchronization request：This website
The LSP message fragments mark being associated with the network example of common configuration in the neighbor site；Content sending unit specifically for
The LSP messages of the segmental identification that there is the neighbor site to be asked are sent to the neighbor site.
Further, prepare transmitting element to carry in LSP summary infos specifically for the segmental identification by LSP messages；
Carry the network example configured in this website and its with the incidence relation of LSP summary infos neighbour is sent in CSNP messages
Occupy website；Synchronizing information request can be PSNP messages, include in this website and the neighbor site in LSP summary infos therein
The LSP message fragments that the network example of common configuration is associated are identified.
When the newly-increased network example of this website, described device can also include preparing receiving unit, adjacent for receiving each
The notice of website is occupied, including the network example configured in the neighbor site；The preparation transmitting element is additionally operable to our station
The newly-increased network example of point notifies neighbor site；And, the encapsulation unit is additionally operable to for newly-increased network example to need synchronization
Information encapsulation be LSP messages；The content sending unit is additionally operable to the LSP reports for being packaged with newly-increased network example information
Text is sent to the neighbor site for being configured with the newly-increased example；Described device can also include contents request module, for configuration
The LSP messages that the neighbor site request for having the newly-increased example is associated with the newly-increased example.
Fig. 8 show another kind of synchronizing information device of present invention offer, applies on the edge device of station network, bag
Preparation receiving unit, example determining unit, contents request module and content receipt unit is included, wherein：Preparing receiving unit is used for
The notice of neighbor site is received, including the network example configured in the neighbor site；Example determining unit, for according to this
Website and the network example of each self-configuring of neighbor site, determine the network example that this website is configured jointly with neighbor site；Interior
Holding request unit is used for neighbor site transmission synchronizing information request, the net that request is configured jointly with this website and the neighbor site
The associated LSP messages of network example；Content receipt unit is used for the reception that neighbor site is returned according to described information synchronization request
LSP messages, preserve the information of the wherein network example of this site configuration, wherein, the LSP messages be the neighbor site by its
Synchronous information is needed under each network example, is obtained after carrying out burst according to the network example belonging to information.
In a kind of optional embodiment, also include in the notice in the neighbor site：Match somebody with somebody in the neighbor site
The network example that puts and the incidence relation of the segmental identification of LSP messages；Described information synchronization request includes：With this website and should
The LSP message fragments mark that the network example that neighbor site is configured jointly is associated；The content receipt unit is specifically for connecing
Receive the LSP messages with asked segmental identification.
Further, the notice of the neighbor site is CSNP messages, including the network configured in the neighbor site
Example and the incidence relation of LSP summary infos, the LSP summary infos include the segmental identification of LSP messages；Described information is same
Step request includes in LSP summary infos therein and the net for being configured in this website and in the neighbor site jointly for PSNP messages
The associated LSP message fragments mark of network example.
As can be seen that relative to each edge device of prior art from the embodiment of any of the above method and apparatus
Send whole LSP messages to other websites, the present invention first divides LSP messages on edge device according to example, then and its
His website exchanges configured network example, so can only transmission is associated with the network example for configuring jointly between website
LSP messages, the situation for being all configured with identical network example to simultaneously not all website, the present invention can be reduced between website
The quantity of information of transmission, saving core network bandwidth, and can reduce edge device needs message to be processed.
Presently preferred embodiments of the present invention is the foregoing is only, not in order to limit the present invention, all in essence of the invention
Within god and principle, any modification, equivalent substitution and improvements that is done etc. are should be included within the scope of protection of the invention.
Claims (14)
1. a kind of information synchronization method of IS-IS, applies on the edge device of station network, it is characterised in that include：
Synchronous information will be needed under each network example in this website, carry out burst according to the network example belonging to which, be encapsulated as
LSP messages；
The network example configured in this website is notified neighbor site；
The synchronizing information request from neighbor site is received, described information synchronization request carries the neighbor site according to described
Website and the network example of each self-configuring of the neighbor site, determined by the configuration jointly of described website and the neighbor site
The information of network example；
The LSP messages being associated with the network example of common configuration in this website and the neighbor site are sent to the neighbor station
Point.
2. method according to claim 1, it is characterised in that：
The network example by configuration in this website notifies neighbor site to be specially：By in this website configure network example,
And its neighbor site is notified with the incidence relation of the segmental identification of LSP messages；
Also include in described information synchronization request：It is associated with the network example of common configuration in this website and the neighbor site
LSP message fragments are identified；
Described LSP messages are sent to the neighbor site it are specially：LSP by the segmental identification that there is the neighbor site to be asked
Message is sent to the neighbor site.
3. method according to claim 2, it is characterised in that：
Described neighbor station is notified by the network example configured in this website and its with the incidence relation of the segmental identification of LSP messages
Point is specially：The segmental identification of LSP messages is carried in LSP summary infos；By in this website configure network example and its
Carry with the incidence relation of LSP summary infos neighbor site is sent in CSNP messages；
Described information synchronization request is PSNP messages, includes that this website is common with the neighbor site in LSP summary infos therein
With the associated LSP message fragments mark of the network example of configuration.
4. the method according to Claim 1-3 any one, it is characterised in that methods described also includes：
The notice of each neighbor site is received, including the network example configured in the neighbor site；
When the newly-increased network example of this website, the newly-increased network example of this website is notified neighbor site；And, by newly-increased network
The Information encapsulation that the needs of example are synchronous is LSP messages, is sent to the neighbor site for being configured with the newly-increased example；And to being configured with
The LSP messages that the neighbor site request of the newly-increased example is associated with the newly-increased example.
5. a kind of information synchronization method of IS-IS, applies on the edge device of station network, it is characterised in that include：
The notice of neighbor site is received, including the network example configured in the neighbor site；
According to this website and the network example of each self-configuring of neighbor site, the net that this website is configured jointly is determined with neighbor site
Network example；
Synchronizing information request is sent to neighbor site, is asked related to the network example that this website and the neighbor site are configured jointly
The LSP messages of connection；
The LSP messages that neighbor site is returned according to described information synchronization request are received, the network reality of wherein this site configuration is preserved
The information of example, wherein, the LSP messages are that the neighbor site will need synchronous information under its each network example, according to letter
Network example belonging to breath is obtained after carrying out burst.
6. method according to claim 5, it is characterised in that：
Also include in notice in the neighbor site：The burst of the network example of configuration and LSP messages in the neighbor site
The incidence relation of mark；
Described information synchronization request includes：The LSP that the network example for being configured with this website and the neighbor site jointly is associated
Message fragment is identified；
The reception LSP messages are specially：Receive the LSP messages with asked segmental identification.
7. method according to claim 6, it is characterised in that：The notice of the neighbor site is CSNP messages, wherein wraps
The incidence relation of the network example of configuration and LSP summary infos in the neighbor site is included, the LSP summary infos include LSP
The segmental identification of message；
Described information synchronization request is PSNP messages, include in LSP summary infos therein with this website and the neighbor site
The associated LSP message fragments mark of the network example of interior common configuration.
8. a kind of synchronizing information device of IS-IS, applies on the edge device of station network, it is characterised in that include：
Encapsulation unit, for will need synchronous information under each network example in this website, enters according to the network example belonging to which
Row burst, is encapsulated as LSP messages；
Configuration transmitting element, the network example for will configure in this website notify neighbor site；
Request reception unit, asks for the synchronizing information from neighbor site, and described information synchronization request carries the neighbours
Website according to described website and the network example of each self-configuring of the neighbor site, determined by described website and the neighbours
The information of the network example that website is configured jointly；
Content sending unit, for the LSP reports that will be associated with the network example of common configuration in this website and the neighbor site
Text is sent to the neighbor site.
9. device according to claim 8, it is characterised in that：
Described configuration transmitting element specifically for：By the network example of configuration in this website and its segmental identification with LSP messages
Incidence relation notify neighbor site；
Also include in described information synchronization request：This website is associated with the network example of common configuration in the neighbor site
LSP message fragments are identified；
The content sending unit specifically for：The LSP messages of the segmental identification that there is the neighbor site to be asked are sent to
The neighbor site.
10. device according to claim 9, it is characterised in that：
Described configuration transmitting element specifically for：The segmental identification of LSP messages is carried in LSP summary infos；By this website
The network example of interior configuration and its carry with the incidence relation of LSP summary infos and neighbor site is sent in CSNP messages；
Described information synchronization request is PSNP messages, includes that this website is common with the neighbor site in LSP summary infos therein
With the associated LSP message fragments mark of the network example of configuration.
11. devices according to claim 8 to 10 any one, it is characterised in that described device also includes：
Configuration receiving unit, for receiving the notice of each neighbor site, including the network reality configured in the neighbor site
Example；
When the newly-increased network example of this website, the configuration transmitting element is additionally operable to the network example that this website is newly-increased and notifies neighbour
Occupy website；And, it is LSP messages that the encapsulation unit is additionally operable to Information encapsulation synchronous for the needs of newly-increased network example；Institute
State content sending unit and be additionally operable to be sent to the LSP messages for being packaged with newly-increased network example information and be configured with the newly-increased reality
The neighbor site of example；Described device also includes contents request module, for asking to the neighbor site for being configured with the newly-increased example
The LSP messages being associated with the newly-increased example.
A kind of synchronizing information device of 12. IS-IS, applies on the edge device of station network, it is characterised in that include：
Configuration receiving unit, for receiving the notice of neighbor site, including the network example configured in the neighbor site；
Example determining unit, for the network example according to this website and each self-configuring of neighbor site, determines this website with neighbour
Occupy the network example that website is configured jointly；
Contents request module, for sending synchronizing information request to neighbor site, asks common with this website and the neighbor site
The associated LSP messages of the network example of configuration；
Content receipt unit, for receiving the LSP messages that neighbor site is returned according to described information synchronization request, preserves wherein originally
The information of the network example of site configuration, wherein, the LSP messages are that the neighbor site will be needed under its each network example together
The information of step, obtains after carrying out burst according to the network example belonging to information.
13. devices according to claim 12, it is characterised in that：
Also include in notice in the neighbor site：The burst of the network example of configuration and LSP messages in the neighbor site
The incidence relation of mark；
Described information synchronization request includes：The LSP that the network example for being configured with this website and the neighbor site jointly is associated
Message fragment is identified；
The content receipt unit specifically for：Receive the LSP messages with asked segmental identification.
14. devices according to claim 13, it is characterised in that：The notice of the neighbor site is CSNP messages, wherein
Including the incidence relation of the network example of configuration and LSP summary infos in the neighbor site, the LSP summary infos include
The segmental identification of LSP messages；
Described information synchronization request is PSNP messages, include in LSP summary infos therein with this website and the neighbor site
The associated LSP message fragments mark of the network example of interior common configuration.
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| CN104243268B (en) * | 2014-09-19 | 2017-05-10 | 新华三技术有限公司 | Association method and device between virtual extensible local area networks (VXLAN) and tunnel |
| CN105577500B (en) * | 2014-10-16 | 2019-05-03 | 新华三技术有限公司 | The correlating method and device of VXLAN and tunnel |
| CN106657177A (en) * | 2015-10-29 | 2017-05-10 | 中兴通讯股份有限公司 | Network reconstruction method and network reconstruction system |
| CN107995083B (en) * | 2016-10-27 | 2020-10-27 | 中国电信股份有限公司 | Method, system and equipment for realizing intercommunication between L2VPN and VxLAN |
| CN106656810B (en) * | 2016-11-23 | 2020-04-03 | 新华三技术有限公司 | MAC address learning method and device |
| CN114124806B (en) * | 2018-05-25 | 2022-11-25 | 华为技术有限公司 | Method and equipment for generating route |
| CN110958181B (en) * | 2019-12-06 | 2021-08-17 | Ut斯达康通讯有限公司 | Method and device for distributing SRv 6-crossing slicing network by ISIS protocol |
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