CN105337854B - A kind of routing iinformation retransmission method and device - Google Patents

A kind of routing iinformation retransmission method and device Download PDF

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CN105337854B
CN105337854B CN201410334605.4A CN201410334605A CN105337854B CN 105337854 B CN105337854 B CN 105337854B CN 201410334605 A CN201410334605 A CN 201410334605A CN 105337854 B CN105337854 B CN 105337854B
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routing iinformation
route information
routing
buffer tree
information
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CN105337854A (en
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王朝
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Hangzhou DPTech Technologies Co Ltd
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Abstract

A kind of routing iinformation retransmission method of present invention offer and device, including:Receive updating route information request;In the case where determining that buffer tree includes buffered data according to the updating route information ask, search buffer tree in whether include and relevant first routing iinformation of the routing;In the case where it includes the first routing iinformation that lookup result, which is buffer tree, is asked according to the updating route information, the first routing iinformation in buffer tree is updated;Updated first routing iinformation is sent to data plane.To eliminate the redundancy of control plane.

Description

A kind of routing iinformation retransmission method and device
Technical field
The present invention relates to field of communication technology, more particularly to a kind of routing iinformation retransmission method and device.
Background technology
Routing is the basic module of the network equipment, with the expansion of network size and the complexity of topological structure, network event Barrier is also increasingly frequent.Wherein hardware fault, error configurations etc. may all cause to cause to route frequent variation, this route oscillation Seriously affect performance of network equipments and forward efficiency.
It is detached in control plane and data surface, routing iinformation will often be passed between control plane and data surface It passs.The way to play for time can be applied equally to the data transfer between control plane and control plane.When the transmission rate of control plane More than data plane processing speed when, in order to ensure that information is not lost, current common way is to believe routing to be sent Breath in control plane simply cache and retransmit.
Although the scheme of the prior art ensure that routing iinformation is not lost, but the feelings very long in the route oscillation duration Under condition, the redundancy for the routing iinformation largely cached that control plane stored is caused.
Invention content
In view of this, a kind of routing iinformation retransmission method of present invention offer and device, to solve control layer in the prior art The redundancy issue for the routing iinformation largely cached that face is stored.
An embodiment of the present invention provides a kind of routing iinformation retransmission methods, are applied to control plane, including:
Receive updating route information request;
It in the case where it includes buffered data to determine buffer tree, is asked according to the updating route information, searches buffering In tree whether include and relevant first routing iinformation of the routing;
In the case where it includes the first routing iinformation that lookup result, which is buffer tree, asked according to the updating route information It asks, the first routing iinformation in buffer tree is updated;
Updated first routing iinformation is sent to data plane.
Preferably, whether described to be asked according to the updating route information, it includes related to the routing to search in buffer tree The first routing iinformation, specifically include:
Routed keyword is set, and the routed keyword carried in being asked according to the updating route information searches buffer tree In whether include the first routing iinformation identical with the routed keyword.
Preferably, described to be asked according to the updating route information, the first routing iinformation in buffer tree is updated, It specifically includes:
When updating route information request carrying secondary route information, and the secondary route information is modified first It is secondary route information by the first updating route information when routing iinformation;
When the updating route information asks to carry to the cancel an order information of the first routing iinformation, then by the first via by believing Breath is updated to cancel an order information.
Preferably, the method further includes:
In the case where not including the first routing iinformation during lookup result is buffer tree, the updating route information is asked The routing iinformation or cancel an order information cache of carrying are in buffer tree.
Preferably, the method further includes:
When there is no buffered data in determining buffer tree, the routing iinformation or cancel an order that are carried during routing update is asked Information is sent to data plane, and when sending failure, will be in the routing iinformation or cancel an order information preservation to buffer tree.
The embodiment of the present invention additionally provides a kind of routing iinformation retransmission unit, including:
Receiving unit, for receiving updating route information request;
Searching unit, in the case where it includes buffered data to determine buffer tree, according to the updating route information Request, search buffer tree in whether include and relevant first routing iinformation of the routing;
Updating unit is used in the case where it includes the first routing iinformation that lookup result, which is buffer tree, according to the road It is asked by information update, the first routing iinformation in buffer tree is updated;
Transmission unit, for updated first routing iinformation to be sent to data plane.
Preferably, the searching unit is specifically used for setting routed keyword, in being asked according to the updating route information Whether the routed keyword of carrying, it includes the first routing iinformation identical with the routed keyword to search in buffer tree.
Preferably, the updating unit is specifically used for carrying secondary route information when updating route information request, and It is secondary route information by the first updating route information when the secondary route information is modified first routing iinformation;Work as institute Cancel an order information of the updating route information request carrying to the first routing iinformation is stated, then is revocation by the first updating route information Command information.
Preferably, described device further includes:
Buffer unit is specifically used in the case where not including the first routing iinformation during lookup result is buffer tree, by institute Stating updating route information asks the routing iinformation carried or cancel an order information cache in buffer tree.
Preferably, the buffer unit is further used for when not having buffered data in determining buffer tree, by routing update The routing iinformation or cancel an order information carried in request is sent to data plane, and when sending failure, by the routing iinformation Or in cancel an order information preservation to buffer tree.
An embodiment of the present invention provides a kind of routing iinformation retransmission method and devices, include the feelings of buffered data in buffer tree Under condition, updating route information request is received, and be updated to routing iinformation in buffer tree, and updated routing is believed Breath is sent to data plane, to eliminate the redundancy of control plane.
Description of the drawings
Fig. 1 is method flow diagram provided in an embodiment of the present invention;
Fig. 2 is network topology schematic diagram provided in an embodiment of the present invention;
Fig. 3 is apparatus structure schematic diagram provided in an embodiment of the present invention.
Specific implementation mode
According to the prior art, detached in control plane and data surface, routing iinformation often will be in control plane and data It is transmitted between face.The way to play for time can be applied equally to the data transfer between control plane and control plane.Work as control layer When the transmission rate in face is more than the processing speed of data plane, in order to ensure that information is not lost, current common way is will to wait for The routing iinformation of transmission in control plane simply cache and retransmit.Although the scheme of the prior art ensure that routing iinformation It does not lose, but in the case where the route oscillation duration is very long, the routing largely cached for causing control plane to be stored The redundancy of information.
In view of the above-mentioned problems, an embodiment of the present invention provides a kind of routing iinformation retransmission methods, which is characterized in that including:
Receive updating route information request;
It in the case where it includes buffered data to determine buffer tree, is asked according to the updating route information, searches buffering In tree whether include and relevant first routing iinformation of the routing;
In the case where it includes the first routing iinformation that lookup result, which is buffer tree, asked according to the updating route information It asks, the first routing iinformation in buffer tree is updated;
Updated first routing iinformation is sent to data plane.
The method provided according to embodiments of the present invention receives routing letter in the case where buffer tree includes buffered data Breath update request, and routing iinformation is updated in buffer tree, and updated routing iinformation is sent to data plane, To eliminate the redundancy of control plane.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, an embodiment of the present invention provides a kind of routing iinformation retransmission method, this method includes:
Step 101:Receive updating route information request.
In embodiments of the present invention, routing iinformation is often transmitted between control plane and control plane, wherein according to number According to the difference for sending and receiving role, communicating pair can be divided into control plane and data plane.When routing iinformation becomes When change, control plane receives updating route information request, and updated routing iinformation is sent to data plane.
Wherein, routing iinformation occur variation may include:Modification has routing iinformation, increases a routing iinformation or delete Except a routing iinformation.
As shown in Fig. 2, being network topology schematic diagram;Device A, B, C, D, E, F and G form a network topology, Mei Geshe Include control plane and data plane in standby, control plane is after having been calculated the routing iinformation of network topology, by routing iinformation Be sent to data plane so that data plane according to the other equipment in routing iinformation and network topology into row data communication.When After network topology changes, control plane needs recalculate the routing iinformation of network topology after variation, and will be after variation Routing iinformation is retransmitted to data plane.Control plane and data plane can be divided into software approach or hardware aspect.
Step 102:In the case where it includes buffered data to determine buffer tree, asked according to the updating route information, Search buffer tree in whether include and relevant first routing iinformation of the routing.
Before step 102, it can first judge in buffer tree whether to include buffer tree evidence, if it is judged that being buffer tree Include buffer tree evidence, illustrate that data plane is relatively busy, the routing iinformation that control plane is sent to data plane needs first buffering Wait in line to send in tree;If it is judged that not include buffer tree evidence in buffer tree, directly routing iinformation can be sent To data plane.
In embodiments of the present invention, the buffer tree of structure is stored in the buffer storage of control plane, and by depositing The internal representation of the block for the file that the file system protocol that reservoir is supported maintains.Broadly, buffer tree is in the root of file With index node.Index node is the data structure for being used to store the information (such as metadata) about file, and data Block is the structure for the real data for being used to storage file.
In embodiments of the present invention, can by each routing be arranged routed keyword come unique mark some routing, The routed keyword that carries in being asked according to the updating route information, search in buffer tree whether include and the routing is crucial Identical first routing iinformation of word.Wherein, which can be some determinant attributes such as the network segment.
For example, for OSPF (Open Shortest Path First, ospf) agreement, Ke Yizhi It connects by network segment label switching path.For certain special scenes, if the network segment cannot be relied solely on as mark.For example, VPN (Virtual Private Network, Virtual Private Network) is route, there may be the routing of the same network segment in different VPN, Therefore for the mark of routing, need to add other attributes on the basis of the network segment collectively as mark.
Step 103:In the case where it includes the first routing iinformation that lookup result, which is buffer tree, according to the routing iinformation Update request, is updated the first routing iinformation in buffer tree.
Step 104:Updated first routing iinformation is sent to data plane.
May include two kinds of situations if lookup result is that buffer tree includes the first routing iinformation:1, data plane is not Routing iinformation including the routing, first routing iinformation are the routing iinformation for the routing that data plane will receive for the first time; 2, data plane includes the routing iinformation of the routing, which is used for the routing for including to data plane Routing iinformation is updated.
In the first of two kinds of situations:
(1) when updating route information asks to carry secondary route information, the wherein secondary route information is modified the First updating route information is then secondary route information by one routing iinformation;
In embodiments of the present invention, further, it relatively hurries since data plane receives routing iinformation, it is therefore desirable to will send It is buffered in buffer tree to the routing iinformation of data plane.And the setting delay of the routing iinformation to being often buffered in buffer tree is sent Period sends out the routing iinformation when time of the routing iinformation in buffer tree reaching the delay sending time section of the setting Give data plane, if send at this time it is unsuccessful, need herein be routing iinformation setting delay sending time section, until the routing Information is sent successfully.By taking the delay sending time section of setting is 10s as an example, the routing for including for buffer tree as shown in table 1 is believed Breath and corresponding delay sending time section.
Table 1:
As shown in Table 1, routing iinformation 4 is earliest into buffer tree queue, and routing iinformation 4 can be sent to by also surplus 1s Data plane, and routing iinformation 1 is just to be cached to buffer tree.
Therefore, in (1) when being secondary route information by the first updating route information, only by the first updating route information For secondary route information, remaining delay time is constant.
(2) when updating route information asks to carry to the cancel an order information of the first routing iinformation, then by the first via by believing Breath is deleted.
Similarly, due to further including the remaining delay time corresponding to the first routing iinformation in buffer tree, it is therefore desirable to by this The corresponding remaining delay time of first routing iinformation is deleted together.
Since buffer tree includes the first routing iinformation, updating route information request, which is unlikely to be, increases routing Routing iinformation.
Secondary route information in the embodiment of the present invention refers both to, the information of the newest variation of the routing;First routing iinformation is equal Refer to the routing iinformation of the routing before the appearance of secondary route information.
Under the second situation of two kinds of situations:
(3) when updating route information asks to carry secondary route information, the wherein secondary route information is modified the First updating route information is then secondary route information by one routing iinformation;
(3) similarly with (1), only by the first updating route information it is secondary route information, which is used for The routing iinformation of the routing for including in data plane is updated.
(4) when updating route information asks to carry to the cancel an order information of the first routing iinformation, then by the first via by believing Breath is updated to cancel an order information.
(4) similarly with (3), only by the first updating route information it is cancel an order information, remaining delay time is constant.Its In, the routing iinformation which is used for the routing for including by data plane is deleted.
Can also include two kinds of situations if it does not include the first routing iinformation that lookup result, which is in buffer tree,:1, data Layer Face does not include the routing iinformation of the routing;2, data plane includes the routing iinformation of the routing.
In the first of two kinds of situations:
It (5), then will be in secondary route information cache to buffer tree when updating route information request carrying secondary route information;
(5) similarly with (1), however due to not including the first routing iinformation in buffer tree, by secondary route information When being cached in buffer tree, need that delay sending time section, such as 10s, when secondary route information is arranged to the secondary route information When time in buffer tree reaches the delay sending time section of the setting, secondary route information is sent to data plane.If It is unsuccessful that secondary route information is sent at this time, needs to be secondary route information setting delay sending time section herein, until second Routing iinformation is sent successfully.
(6) when the third routing iinformation of updating route information request carrying increase routing, then third routing iinformation is cached Into buffer tree.
Since updating route information asks to carry the third routing iinformation for increasing routing, not including in buffer tree should First routing iinformation of routing, therefore the third routing iinformation is cached in buffer tree, and prolong for the setting of third routing iinformation When sending time section.
Under the second situation of two kinds of situations:
It (7), then will be in secondary route information cache to buffer tree when updating route information request carrying secondary route information;
(7) similarly with (5), by secondary route information cache to buffer tree, which is used for data Layer The routing iinformation for the routing that face includes is updated.
(8) the cancel an order information for the first routing iinformation for including to data plane when updating route information request carrying, Then by the cancel an order information cache in buffer tree;
(8) similarly with (5), by cancel an order information cache in buffer tree, which is used for data Layer The first via that face includes is by information deletion.
(9) when the third routing iinformation of updating route information request carrying increase routing, then third routing iinformation is cached Into buffer tree.
(9) similarly with (6), details are not described herein.
Said program is practiced when determining that buffer tree includes buffered data, when no slow in determining buffer tree When rushing data, the routing iinformation or cancel an order information that are carried during routing update is asked are sent to data plane, and are sending It, will be in the routing iinformation or cancel an order information preservation to buffer tree when failure.
According to said program, in the case where buffer tree includes buffered data, receives updating route information and ask, and Routing iinformation is updated in buffer tree, and updated routing iinformation is sent to data plane, to eliminate control The redundancy of level.
As shown in figure 3, an embodiment of the present invention provides a kind of routing iinformation retransmission units, which is characterized in that including:
Receiving unit 301, for receiving updating route information request;
Searching unit 302, in the case where it includes buffered data to determine buffer tree, more according to the routing iinformation New request, search in buffer tree whether include and relevant first routing iinformation of the routing;
Updating unit 303 is used in the case where it includes the first routing iinformation that lookup result, which is buffer tree, according to described Updating route information is asked, and is updated to the first routing iinformation in buffer tree;
Transmission unit 304, for updated first routing iinformation to be sent to data plane.
Further, the searching unit is specifically used for setting routed keyword, is asked according to the updating route information Whether the routed keyword of middle carrying, it includes the first routing iinformation identical with the routed keyword to search in buffer tree.
Further, the updating unit is specifically used for carrying secondary route information when updating route information request, And the secondary route information be modified first routing iinformation when, by the first updating route information be secondary route information;When The updating route information request carries the cancel an order information to the first routing iinformation, then is to remove by the first updating route information Sell command information.
Further, described device further includes:
Buffer unit is specifically used in the case where not including the first routing iinformation during lookup result is buffer tree, by institute Stating updating route information asks the routing iinformation carried or cancel an order information cache in buffer tree.
Further, the buffer unit is further used for when not having buffered data in determining buffer tree, will route more The routing iinformation or cancel an order information carried in new request is sent to data plane, and when sending failure, which is believed In breath or cancel an order information preservation to buffer tree.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention With within principle, any modification, equivalent substitution, improvement and etc. done should be included within the scope of protection of the invention god.

Claims (10)

1. a kind of routing iinformation retransmission method is applied to control plane, which is characterized in that including:
Receive updating route information request;
It in the case where it includes buffered data to determine buffer tree, is asked, is searched in buffer tree according to the updating route information Whether include routeing relevant first routing iinformation with target, the target routing is:The updating route information request is signified , need more new routing information routing;
In the case where it includes the first routing iinformation that lookup result, which is buffer tree, asked according to the updating route information, it is right The first routing iinformation in buffer tree is updated;
Updated first routing iinformation is sent to data plane.
2. according to the method described in claim 1, it is characterized in that, described ask according to the updating route information, lookup is slow Whether include routeing relevant first routing iinformation with target in punching tree, specifically includes:
Target routed keyword is set, and the target routed keyword carried in being asked according to the updating route information is searched slow Whether include the first routing iinformation identical with the target routed keyword in punching tree.
3. according to the method described in claim 1, it is characterized in that, described ask according to the updating route information, to buffering The first routing iinformation in tree is updated, and is specifically included:
When the updating route information ask carry secondary route information, and the secondary route information be the modified first via by It is secondary route information by the first updating route information when information;
When the updating route information asks to carry to the cancel an order information of the first routing iinformation, then more by the first routing iinformation It is newly cancel an order information.
4. according to the method described in claim 1, it is characterized in that, the method further includes:
In the case where not including the first routing iinformation during lookup result is buffer tree, the updating route information is asked to carry Routing iinformation or cancel an order information cache in buffer tree.
5. method according to any one of claims 1 to 4, which is characterized in that the method further includes:
When there is no buffered data in determining buffer tree, the routing iinformation or cancel an order that are carried during updating route information is asked Information is sent to data plane, and when sending failure, will be in the routing iinformation or cancel an order information preservation to buffer tree.
6. a kind of routing iinformation retransmission unit, which is characterized in that including:
Receiving unit, for receiving updating route information request;
Searching unit, in the case where it includes buffered data to determine buffer tree, being asked according to the updating route information, Whether include with target route relevant first routing iinformation, the target routing is if searching in buffer tree:The routing iinformation Routing that is signified, needing more new routing information is asked in update;
Updating unit, in the case where it includes the first routing iinformation that lookup result, which is buffer tree, being believed according to the routing Breath update request, is updated the first routing iinformation in buffer tree;
Transmission unit, for updated first routing iinformation to be sent to data plane.
7. device according to claim 6, which is characterized in that the searching unit is specifically used for setting target and route pass Key word, the target routed keyword that carries in being asked according to the updating route information, search in buffer tree whether include and institute State identical first routing iinformation of target routed keyword.
8. device according to claim 6, which is characterized in that the updating unit is specifically used for working as the routing iinformation Update request carry secondary route information, and the secondary route information be modified first routing iinformation when, by the first via by Information update is secondary route information;It asks to carry when the updating route information and the cancel an order of the first routing iinformation is believed First updating route information is then cancel an order information by breath.
9. device according to claim 6, which is characterized in that described device further includes:
Buffer unit is specifically used in the case where not including the first routing iinformation during lookup result is buffer tree, by the road The routing iinformation or cancel an order information cache carried by information update request is in buffer tree.
10. the device according to any one of claim 6~9, which is characterized in that the buffer unit is further used for When there is no buffered data in determining buffer tree, the routing iinformation or cancel an order information that are carried during updating route information is asked It is sent to data plane, and when sending failure, it will be in the routing iinformation or cancel an order information preservation to buffer tree.
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