CN105939265B - Route processing method and device - Google Patents
Route processing method and device Download PDFInfo
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- CN105939265B CN105939265B CN201510497230.8A CN201510497230A CN105939265B CN 105939265 B CN105939265 B CN 105939265B CN 201510497230 A CN201510497230 A CN 201510497230A CN 105939265 B CN105939265 B CN 105939265B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/54—Organization of routing tables
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Abstract
The present invention provides a kind of route processing method and device, this method application is on network devices, the network equipment includes central processor CPU and application-specific integrated circuit ASIC chip, this method is executed by CPU, it include: to judge whether any sort route table items are the machine route table items based on classification results after carrying out classification processing to route table items；When such route table items is not the machine route table items, target routing lists item is determined for such route table items；Target routing lists item is handed down to asic chip, so that target routing lists item is stored in local routing table by asic chip.Using the embodiment of the present invention, when any sort routing is not the machine route table items, target routing lists item is determined for every class route table items, target routing lists item is handed down to asic chip, therefore, the target routing lists item determined from every class route table items need to be only stored in asic chip, without all routing entries for storing every class route table items, so as to achieve the purpose that save the route table items resource of asic chip.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of route processing methods and device.
Background technique
Router (Router, router, also known as path device) is a kind of computer network facility, it can lead to network flow
Crossing transmission of network one by one, to destination (selection transmission path), this process is known as routing.And the routing capabilities of router are (i.e.
The routing entry of support) be decided by router ASIC (Application Specific Integrated Circuit, specially
With integrated circuit) the route table items resource of chip, and for an asic chip, route table items resource is limited.
In the related technology, CPU (Central Processing Unit, central processing unit) can be all by what is learnt
Route table items are all handed down to asic chip, can waste the route table items resource of asic chip in this way.
Summary of the invention
In view of this, the present invention provides a kind of route processing method and device, to solve to waste ASIC core in the related technology
The problem of route table items resource of piece.
Specifically, the present invention is achieved through the following technical solutions:
An aspect of of the present present invention provides a kind of route processing method, and the method is applied on network devices, the network
Equipment includes central processor CPU and application-specific integrated circuit ASIC chip, and the method is executed by the CPU, comprising:
After carrying out classification processing to route table items, judge whether any sort route table items are the machine road based on classification results
By list item；
When such route table items is not the machine route table items, target routing lists item is determined for such route table items；
The target routing lists item is handed down to the asic chip, so that the asic chip is by the target routing lists
Item is stored in local routing table.
Another aspect of the present invention provides a kind of route processing device, and described device is applied on the CPU of the network equipment,
The network equipment further includes application-specific integrated circuit ASIC chip, and described device includes:
Judging unit, for judging any sort routing table based on classification results after carrying out classification processing to route table items
Whether item is the machine route table items；
Determination unit, for determining target for such route table items when such route table items is not the machine route table items
Route table items；
Transmission unit, for the target routing lists item to be handed down to the asic chip, so that the asic chip will
The target routing lists item is stored in local routing table.
Mesh is determined for every class route table items when any sort routing is not the machine route table items using the embodiment of the present invention
Route table items are marked, target routing lists item is handed down to asic chip, therefore, need to only be stored from every class routing table in asic chip
The target routing lists item determined in, without all routing entries for storing every class route table items, so as to reach section
Save the purpose of the route table items resource of asic chip.
Detailed description of the invention
Fig. 1 is a kind of flow diagram of route processing method shown in an exemplary embodiment of the invention；
Fig. 2 is that an a kind of hardware configuration of route processing device place equipment shown in an exemplary embodiment of the invention shows
It is intended to；
Fig. 3 is a kind of structural block diagram of route processing device shown in an exemplary embodiment of the invention.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistented with the present invention.On the contrary, they be only with it is such as appended
The example of device and method being described in detail in claims, some aspects of the invention are consistent.
It is only to be not intended to limit the invention merely for for the purpose of describing particular embodiments in terminology used in the present invention.
It is also intended in the present invention and the "an" of singular used in the attached claims, " described " and "the" including majority
Form, unless the context clearly indicates other meaning.It is also understood that term "and/or" used herein refers to and wraps
It may be combined containing one or more associated any or all of project listed.
It will be appreciated that though various information, but this may be described using term first, second, third, etc. in the present invention
A little information should not necessarily be limited by these terms.These terms are only used to for same type of information being distinguished from each other out.For example, not departing from
In the case where the scope of the invention, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as
One information.Depending on context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determination ".
In the router for being provided with asic chip, asic chip can receive and store the route table items that CPU is issued,
When network flow reaches router, asic chip can be based on these route table items, search route table items, and according to finding
Route table items forward network flow, and still, asic chip is only responsible for receiving and storing, and deposit without carrying out selection to route table items
Storage, for example, CPU may issue a plurality of route table items with phase same-action, asic chip can all deposit these route table items
Storage, and when forwarding network flow, but only select a route table items therein, that is, these routing tables with phase same-action
Item be only possible to one be it is common or effective, in this way, a large amount of route table items resource in asic chip can be wasted.For this purpose,
The present invention provides a kind of route processing method, device and the network equipment, to solve the route table items resource of waste asic chip
The problem of.
It in embodiments of the present invention, in the network device may include a routing management platform, it is flat in the routing management
It can store all effective route table items that CPU learns in platform, based on the route table items stored in the routing management platform,
CPU can classify to these route table items, for example, according in each route table items IP address and subnet mask will route
List item carries out classification processing, it is preferable that can be classified as the machine route table items, direct-connected route table items and converting route item three
Class, the classification based on route table items handle any sort route table items, so that asic chip be instructed to store route table items.
Technical solution in embodiment in order to enable those skilled in the art to better understand the present invention will combine following attached
Figure is described in further detail technical solution in the embodiment of the present invention.
A kind of flow diagram of route processing method shown in Fig. 1 one exemplary embodiment of the present invention.
As shown in Figure 1, a kind of route processing method, on network devices, which includes center for this method application
Processor CPU and application-specific integrated circuit ASIC chip, this method are executed by CPU, are included the following steps:
Step 101, after carrying out classification processing to route table items, whether any sort route table items are judged based on classification results
For the machine route table items, if it is not, 102 are thened follow the steps, conversely, executing step 104.
In embodiments of the present invention, the machine route table items may include on send local equipment generate route table items, be based on
This kind of route table items send the machine in meeting directly after network flow is matched to such route table items.
Step 102, being is not that any sort route table items that the machine routes determine target routing lists item.
An alternative embodiment according to the present invention, in this step, when any sort route table items are not the machine route table items, and
When being direct-connected route table items, the identical route table items of purpose network prefix in direct-connected route table items are divided into the routing of the first subclass
List item, and the target that any bar route table items in the first subclass route table items are determined as the first subclass route table items is routed
List item.Direct-connected route table items described in the embodiment of the present invention include two direct-connected in local network segment between host or equipment
The route table items communicated, route table items as shown in Table 1 below:
Table 1
| Serial number | Direct-connected route table items |
| 1 | 168.118.0.23/28 |
| 2 | 192.118.0.1/16 |
| 3 | 168.118.0.2/28 |
| 4 | 192.118.0.2/16 |
| 5 | 168.118.0.1/28 |
| 6 | 192.118.0.3/16 |
As shown in table 1, the purpose network prefix of corresponding direct-connected route table items is 168.118. in serial number 1,3 and 5,
These three direct-connected route table items can be then divided into a first subclass route table items, it is similarly, corresponding in serial number 2,4 and 6
The purpose network prefixes of direct-connected route table items be 192.118., another the first subclass route table items, root can be divided into
According to the alternative embodiment, can from mark off selected in any one first subclass route table items any one route table items as this
The target routing lists item of one subclass route table items, for example, purpose network prefix is this first subclass routing table of 168.118.
, including 168.118.0.23/28,168.118.0.2/28 and 168.118.0.1/28, any one can be therefrom selected, such as
168.118.0.2/28 network prefix is the target routing lists item of this first subclass route table items of 168.118. as a purpose.
It should be noted that route table items shown in table 1 are illustrative, the invention is not limited in this regard.
Another alternative embodiment according to the present invention when any sort route table items are not the machine route table items, and is forwarding road
When by list item, the identical route table items of purpose network prefix in converting route item are divided into the second subclass route table items,
And for the second subclass route table items, including the corresponding outgoing interface of route table items it is different, thus route table items
Routing priority also can be different, in this case, in embodiments of the present invention, will route from any second subclass marked off
The highest route table items of routing priority are obtained in list item, to determine it as the target routing lists of the second subclass route table items
?.Converting route item described in the embodiment of the present invention includes the routing for carrying out network flow forwarding in non-local network segment
List item.As shown in table 2, it is any one second subclass route table items example:
Table 2
| Serial number | Converting route item | Outgoing interface | Routing priority |
| 1 | 128.118.1.8/28 | A | Highest |
| 2 | 128.118.1.2/28 | B | Secondary height |
| 3 | 128.118.1.1/28 | C | It is minimum |
As shown in table 2,128.118.1.8/28,128.118.1.2/28 and 128.118.1.1/28 are corresponding to be gone out to connect
Mouth is respectively A, B and C, and routing priority from high to low, will when determining target routing lists item for the second subclass route table items
Determine the highest 128.118.1.8/28 of routing priority as target routing lists item.
Further, when (routing priority is highest for the target routing lists item of determining any second subclass route table items
Route table items) corresponding outgoing interface is high by routing priority time is reacquired from the second subclass route table items when breaking down
The route table items are updated to the target routing lists item of the second subclass route table items by route table items, for example, shown in table 2
The corresponding converting route item 128.118.1.8/28 of serial number 1, corresponding outgoing interface A is broken down, thus by 2 corresponding turns of serial number
Send out target routing lists item of the route table items 128.118.1.2/28 as the second subclass route table items.Closer, work as
It, will be with the higher route table items of the routing priority when practising routing priority route table items high compared with current goal route table items
It is updated to target routing lists item.
Step 103, target routing lists item is handed down to asic chip, so that target routing lists item is stored in by asic chip
In local routing table.
After the target routing lists item for determining all kinds of route table items in a step 102, in this step, the mesh that will be determined
Mark route table items are handed down to asic chip, so that these route table items are stored in local routing table by asic chip, work as reception
When to network flow, asic chip judges whether the purpose IP address that the network flow is matched to from local routing list item, if
It can be matched to, then forward the network flow by matched route table items.
Step 104, forbid the route table items for belonging to the machine route table items being handed down to asic chip.
It in this step, will be direct due to above sending the network flow of the machine after being matched to corresponding the machine route table items
It is transmitted to the machine CPU and carries out business processing, however, may include routing management platform in the machine CPU, which includes the machine
All route table items that CPU learns, therefore, the network flow can directly go the routing table in matching routing management platform
, it is finally fed to the machine CPU, the interaction between the machine CPU and asic chip can be reduced in this way, also reduction the machine CPU's
Load.Therefore, for the machine route table items, in embodiments of the present invention, can forbid for the machine route table items being handed down to
Asic chip, to save the list item resource of asic chip.
Corresponding with the embodiment of aforementioned route processing method, the present invention also provides the embodiments of route processing device.
The embodiment of route processing device 300 of the present invention can be using on network devices.Installation practice can pass through
Software realization can also be realized by way of hardware or software and hardware combining.Taking software implementation as an example, it anticipates as a logic
Device in justice is to be read computer program instructions corresponding in nonvolatile memory by the processor of equipment where it
Into memory, operation is formed.For hardware view, as shown in Fig. 2, for one of equipment where route processing device of the present invention
Kind hardware structure diagram, other than processor shown in Fig. 2, memory, network interface and nonvolatile memory, embodiment
The network equipment where middle device can also include other hardware, repeat no more to this generally according to the actual functional capability of the equipment.
Fig. 3 is a kind of structural block diagram of route processing device shown in an exemplary embodiment of the invention.
As shown in figure 3, a kind of route processing device 300, the device are applied on the CPU of the network equipment, the network equipment
It further include application-specific integrated circuit ASIC chip, which includes judging unit 301, determination unit 302 and transmission unit 303.
Judging unit 301 is used for after carrying out classification processing to route table items, judges that any sort routes based on classification results
Whether list item is the machine route table items.
Determination unit 302 is used for when such route table items is not the machine route table items, determines mesh for such route table items
Mark route table items.
An alternative embodiment according to the present invention, determination unit 302 may include that the first division subelement and first determine son
Unit.Wherein, the first division subelement is used for when any sort route table items are direct-connected route table items, by the direct-connected routing table
The identical route table items of purpose network prefix are divided into the first subclass route table items in；First determining subelement is used for will be any
Any bar route table items in the first subclass route table items are determined as the target routing lists item of the first subclass route table items.
Another alternative embodiment according to the present invention, determination unit 302 may include that the second division subelement and second determine
Subelement.Wherein, second subelement is divided for when any sort route table items are converting route item, the forwarding to be routed
The identical route table items of purpose network prefix are divided into the second subclass route table items in list item, in the second subclass route table items
Route table items have different routing priorities and different outgoing interfaces；Second determines that subelement is used for any described second
The highest route table items of routing priority in subclass route table items are determined as the target routing lists of the second subclass route table items
?.Further, it is based on the alternative embodiment, a kind of route processing device 300 can also include updating unit, can be used for working as
When the corresponding outgoing interface of the highest route table items of routing priority is broken down, obtained from the second subclass route table items preferential
The high route table items of level, to update the target routing lists item of the second subclass route table items.
Transmission unit 303 is used to the target routing lists item being handed down to the asic chip, so that the asic chip
The target routing lists item is stored in local routing table.
The present invention also provides another alternative embodiment, a kind of route processing device 300 can also include forbidding unit, can be with
For forbidding for such route table items being handed down to the asic chip when any sort route table items are the machine route table items.
The function of each unit and the realization process of effect are specifically detailed in the above method and correspond to step in above-mentioned apparatus
Realization process, details are not described herein.
For device embodiment, since it corresponds essentially to embodiment of the method, so related place is referring to method reality
Apply the part explanation of example.The apparatus embodiments described above are merely exemplary, wherein described be used as separation unit
The unit of explanation may or may not be physically separated, and component shown as a unit can be or can also be with
It is not physical unit, it can it is in one place, or may be distributed over multiple network units.It can be according to actual
The purpose for needing to select some or all of the modules therein to realize the present invention program.Those of ordinary skill in the art are not paying
Out in the case where creative work, it can understand and implement.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (10)
1. a kind of route processing method, which is characterized in that the method application on network devices, during the network equipment includes
Central processor CPU and application-specific integrated circuit ASIC chip, the method are executed by the CPU, comprising:
After carrying out classification processing to route table items, judge whether any sort route table items are the machine routing table based on classification results
, the machine route table items include on send local equipment generate route table items；
When such route table items is not the machine route table items, target routing lists item, the target are determined for such route table items
Route table items are the route table items determined from sub-route list item, and the sub-route list item is purpose network in such route table items
The identical route table items of prefix；
The target routing lists item is handed down to the asic chip, so that the asic chip deposits the target routing lists item
Storage is in local routing table.
2. the method according to claim 1, wherein the method also includes:
When any sort route table items are the machine route table items, forbid for such route table items being handed down to the asic chip.
3. the method according to claim 1, wherein described when such route table items is not the machine route table items
When, target routing lists item is determined for such route table items, comprising:
When any sort route table items are direct-connected route table items, by the identical road of purpose network prefix in the direct-connected route table items
First subclass route table items are divided by list item, the direct-connected route table items include two hosts direct-connected in local network segment or
The route table items communicated between equipment；
Any bar route table items in any first subclass route table items are determined as to the mesh of the first subclass route table items
Mark route table items.
4. the method according to claim 1, wherein described when such route table items is not the machine route table items
When, target routing lists item is determined for such route table items, comprising:
When any sort route table items are converting route item, by the identical road of purpose network prefix in the converting route item
Second subclass route table items are divided by list item, the route table items in the second subclass route table items have different routings excellent
First grade and different outgoing interfaces, the converting route item include the routing for carrying out network flow forwarding in non-local network segment
List item；
The highest route table items of routing priority in any second subclass route table items are determined as the second subclass road
By the target routing lists item of list item.
5. according to the method described in claim 4, it is characterized in that, the method also includes:
When the corresponding outgoing interface of the highest route table items of the routing priority is broken down, obtained from the second subclass route table items
The route table items for taking routing priority time high, to update the target routing lists item of the second subclass route table items.
6. a kind of route processing device, which is characterized in that described device is applied on the CPU of the network equipment, the network equipment
It further include application-specific integrated circuit ASIC chip, described device includes:
Judging unit, for judging that any sort route table items are based on classification results after carrying out classification processing to route table items
It is no be the machine route table items, the machine route table items include on send local equipment generate route table items；
Determination unit, for determining that target is routed for such route table items when such route table items is not the machine route table items
List item, the route table items determined in the target routing lists Xiang Weicong sub-route list item, the sub-route list item are that such is routed
The identical route table items of purpose network prefix in list item；
Transmission unit, for the target routing lists item to be handed down to the asic chip, so that the asic chip will be described
Target routing lists item is stored in local routing table.
7. device according to claim 6, which is characterized in that described device further include:
Forbid unit, for forbidding for such route table items being handed down to institute when any sort route table items are the machine route table items
State asic chip.
8. device according to claim 6, which is characterized in that the determination unit, comprising:
First divides subelement, is used for when any sort route table items are direct-connected route table items, will be in the direct-connected route table items
The identical route table items of purpose network prefix are divided into the first subclass route table items, and the direct-connected route table items include local network segment
In direct-connected two route table items communicated between host or equipment；
First determines subelement, for by any bar route table items in any first subclass route table items be determined as this
The target routing lists item of one subclass route table items.
9. device according to claim 6, which is characterized in that the determination unit, comprising:
Second divides subelement, is used for when any sort route table items are converting route item, will be in the converting route item
The identical route table items of purpose network prefix are divided into the second subclass route table items, the routing in the second subclass route table items
List item have different routing priorities and different outgoing interfaces, the converting route item include for non-local network segment into
The route table items of row network flow forwarding；
Second determines subelement, for by the highest route table items of routing priority in any second subclass route table items
It is determined as the target routing lists item of the second subclass route table items.
10. device according to claim 9, which is characterized in that described device further include:
Updating unit, for when the corresponding outgoing interface of the highest route table items of the routing priority is broken down, from second son
The high route table items of preferential level are obtained in class route table items, to update the target routing lists item of the second subclass route table items.
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| CN201510497230.8A CN105939265B (en) | 2015-08-13 | 2015-08-13 | Route processing method and device |
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| CN201510497230.8A CN105939265B (en) | 2015-08-13 | 2015-08-13 | Route processing method and device |
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| CN113489649B (en) * | 2021-06-29 | 2022-07-22 | 新华三信息安全技术有限公司 | Table entry storage method and device |
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| CN101989946A (en) * | 2009-07-30 | 2011-03-23 | 中兴通讯股份有限公司 | Compression method of communication equipment route forwarding table |
| CN104079478A (en) * | 2013-03-25 | 2014-10-01 | 杭州华三通信技术有限公司 | Method and device of packet forwarding |
| CN104486224A (en) * | 2014-12-10 | 2015-04-01 | 杭州华三通信技术有限公司 | Routing learning method and equipment |
| CN104836738A (en) * | 2015-04-02 | 2015-08-12 | 福建星网锐捷网络有限公司 | Router hardware item resource management method and device, and network equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1394999A1 (en) * | 2002-08-07 | 2004-03-03 | Infineon Technologies AG | Method for routing of data packets and routing apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101989946A (en) * | 2009-07-30 | 2011-03-23 | 中兴通讯股份有限公司 | Compression method of communication equipment route forwarding table |
| CN104079478A (en) * | 2013-03-25 | 2014-10-01 | 杭州华三通信技术有限公司 | Method and device of packet forwarding |
| CN104486224A (en) * | 2014-12-10 | 2015-04-01 | 杭州华三通信技术有限公司 | Routing learning method and equipment |
| CN104836738A (en) * | 2015-04-02 | 2015-08-12 | 福建星网锐捷网络有限公司 | Router hardware item resource management method and device, and network equipment |
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