CN102891805A - Method and device for implementing priority mapping in network equipment - Google Patents
Method and device for implementing priority mapping in network equipment Download PDFInfo
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Abstract
The invention provides a method and a device for implementing priority mapping in network equipment. The method comprises the following steps: establishing a flow classification rule list in the network equipment, wherein the flow classification rule list is divided into a high-end region and a low-end region, wherein a first type of keywords for conducting flow classification on messages is configured in the low-end region and does not comprise an ingress port identity of the messages, and other types of keywords are configured in the high-end region; establishing a strategy list in the network equipment, wherein the strategy list comprises a corresponding relationship between a flow type and a priority mapping type; conducting flow classification on received messages by the network equipment according to the flow classification rule list so as to determine the flow type of the message; matching the priority mapping type from the strategy list by the network equipment according to the flow type of the message; and conducting priority mapping on the message according to the matched priority mapping type. According to the method, the occupation of flow classification resources can be reduced when the priority mapping is implemented.
Description
Technical field
The present invention relates to the communications field, be specifically related to a kind of method and device of in the network equipment, realizing priority mapping.
Background technology
Along with the development of broadband access technology, operator accepts just gradually and deployed fiber connecting system (Optical Access Network, OAN) comes to provide more rapid rate and higher-quality service to the user.Passive optical network technique (Passive Optical Network, PON) be a kind of optical fiber access technology of point-to-multipoint, by optical line terminal (Optical Line Terminal, OLT), optical node (Optical Network Unit, ONU) and Optical Distribution Network (Optical Distribution Network, ODN) form.As shown in Figure 1, ODN is point-to-multipoint structure, and an OLT connects a plurality of ONU by ODN.
In the deployment of PON, multitenant unit (Multi-Dwelling Unit, MDU) is mainly used in Fiber-To-The-Building (FTTB)+LAN networking model, and its user's mouthpiece carries multiple business, needs to realize service quality (qos) function.Therefore require MDU to have the ability of priority mapping, namely the qos parameter of packet is made amendment, comprise two layers 802.1p, three layers differentiated services code points (dscp) etc.
In MDU, can realize priority mapping by exchange chip, comprise mapping, distrust (untrust) priority of mapping, the dscp-＞802.1p of mapping, the 802.1p-＞dscp of 802.1p-＞802.1p etc.Priority mapping setting related to the overall situation, each port can configure the priority mapping of identical or different type, as shown in Figure 2.In Fig. 2, the priority mapping type of port 0 configuration of MDU is 802.1p-＞802.1p, and the priority mapping type of the port one of MDU and port n configuration is dscp-＞802.1p
On some exchange chip, priority mapping can realize by the priority mapping table, will realize by traffic classification for the exchange chip that does not have the priority mapping table.Traffic classification is a message classification and filtering engine, parsing is arranged, searches, the function such as strategy, by the stream type that coupling 802.1p or dscp determine message, then revises respective priority according to the Policy Table and can realize priority mapping.
For some exchange chips, flow classification rule just is tied to unique port, realizes that by traffic classification priority mapping can take a large amount of traffic classification resources.For example, MDU equipment generally provides 8/16/24 user port, if the flow classification rule of exchange chip just is tied to unique port, then each port configures the flow classification rule number too many (64* port number) that need to configure when dscp-＞802.1p shines upon, wherein, 64 is the priority number of dscp.As seen, this implementation has limited the number of assignable flow classification rule when realizing priority mapping, and configuration cannot configure above meeting prompting user traffic classification resource exhaustion behind the resource limitation again.
Summary of the invention
Technical problem to be solved by this invention provides a kind of method and device of realizing priority mapping in the network equipment, and the convection current classified resource takies when realizing priority mapping to reduce.
For solving the problems of the technologies described above, the invention provides technical scheme as follows:
A kind of method that realizes priority mapping in the network equipment comprises:
In the network equipment, set up the flow classification rule table, described flow classification rule table is divided into high end regions and low end regions, wherein, be configured in described low end regions for the first kind keyword that message is carried out traffic classification, do not comprise the inbound port sign of message in the described first kind keyword, be configured in described high end regions for the other types keyword that message is carried out traffic classification;
Establishment strategy table in the network equipment comprises the corresponding relation of stream type and priority mapping type among the described Policy Table;
The network equipment carries out traffic classification according to described flow classification rule table to the message that receives, and determines the stream type that this message is affiliated;
The network equipment is according to the stream type under the message, and coupling priority mapping type is carried out priority mapping according to the priority mapping type that matches to message from described Policy Table.
Above-mentioned method, wherein:
Described first kind keyword is differentiated services code points dscp, and priority mapping type corresponding to stream type under the dscp is: dscp is to the mapping of 802.1p;
Described other types keyword comprises: 802.1p+ inbound port sign, priority mapping type corresponding to stream type under the 802.1p+ inbound port sign is: mapping or the distrust priority of 802.1p to the mapping of dscp, 802.1p to 802.1p.
Above-mentioned method, wherein:
Described other types keyword also comprises: the inbound port sign, priority mapping type corresponding to stream type under the inbound port sign is: do not configure priority mapping.
Above-mentioned method wherein, is set up the flow classification rule table in the network equipment, comprising:
When the exchange chip initialization of network equipment, set up described flow classification rule table, will be configured in based on the flow classification rule of keyword " dscp " described low end regions, will be configured in described high end regions based on the flow classification rule of keyword " inbound port sign ";
After initialization is finished, each inbound port to the network equipment carries out the priority mapping configuration, wherein, for the inbound port that needs configuration " dscp is to the mapping of 802.1p ", do not process, for the inbound port that needs configuration " 802.1p is to the mapping of dscp ", " 802.1p is to the mapping of 802.1p " or " distrust priority ", delete first this inbound port at flow classification rule corresponding to described high end regions, then be the flow classification rule of this inbound port configuration based on keyword " 802.1p+ inbound port sign " at described high end regions.
Above-mentioned method, wherein: the described network equipment is MDU.
A kind of device of in the network equipment, realizing priority mapping,, comprising:
The flow classification rule table is set up module, be used for setting up the flow classification rule table at the network equipment, described flow classification rule table is divided into high end regions and low end regions, wherein, be configured in described low end regions for the first kind keyword that message is carried out traffic classification, do not comprise the inbound port sign of message in the described first kind keyword, be configured in described high end regions for the other types keyword that message is carried out traffic classification;
The Policy Table sets up module, is used at network equipment Establishment strategy table, comprises the corresponding relation of stream type and priority mapping type among the described Policy Table;
The traffic classification module is used for according to described flow classification rule table the message that receives being carried out traffic classification, determines the stream type that this message is affiliated;
The priority mapping module is used for according to the stream type under the message, and coupling priority mapping type is carried out priority mapping according to the priority mapping type that matches to message from described Policy Table.
Above-mentioned device, wherein:
Described first kind keyword is differentiated services code points dscp, and priority mapping type corresponding to stream type under the dscp is: dscp is to the mapping of 802.1p;
Described other types keyword comprises: 802.1p+ inbound port sign, priority mapping type corresponding to stream type under the 802.1p+ inbound port sign is: mapping or the distrust priority of 802.1p to the mapping of dscp, 802.1p to 802.1p.
Above-mentioned device, wherein:
Described other types keyword also comprises: the inbound port sign, priority mapping type corresponding to stream type under the inbound port sign is: do not configure priority mapping.
Above-mentioned device, wherein, described flow classification rule table is set up module and specifically is used for:
When the exchange chip initialization of network equipment, set up described flow classification rule table, will be configured in based on the flow classification rule of keyword " dscp " described low end regions, will be configured in described high end regions based on the flow classification rule of keyword " inbound port sign ";
After initialization is finished, each inbound port to the network equipment carries out the priority mapping configuration, wherein, for the inbound port that needs configuration " dscp is to the mapping of 802.1p ", do not process, for the inbound port that needs configuration " 802.1p is to the mapping of dscp ", " 802.1p is to the mapping of 802.1p " or " distrust priority ", delete first this inbound port at flow classification rule corresponding to described high end regions, then be the flow classification rule of this inbound port configuration based on keyword " 802.1p+ inbound port sign " at described high end regions.
Above-mentioned device, wherein: the described network equipment is MDU.
The technique scheme of the embodiment of the invention, the flow classification rule table is divided into high end regions and low end regions, wherein, the keyword for message being carried out traffic classification of described low side area configurations does not comprise the inbound port sign of message, divide and configuration by this kind, same flow classification rule table can be tied to all inbound ports of the network equipment, like this, just can realize the priority mapping function by enough fewer purpose flow classification rules, thereby the convection current classified resource takies when having reduced the realization priority mapping.
Description of drawings
Fig. 1 is the structural representation of PON in the prior art;
Fig. 2 is prior art medium priority mapping mode schematic diagram;
Fig. 3 is the method flow diagram of realizing priority mapping in the network equipment of the present invention;
Fig. 4 is the distribution schematic diagram of flow classification rule in the application example of the present invention;
Fig. 5 is the structure drawing of device of realizing priority mapping in the network equipment of the present invention.
Embodiment
Design concept of the present invention is as follows: traffic classification has an attribute, namely when the traffic classification engine when searching flow classification rule, if a plurality of clauses and subclauses are mated simultaneously, get the less flow classification rule in address.According to this attribute, the present invention is divided into high end regions (zone that the address is less) and low end regions (zone that the address is larger) with the flow classification rule table, wherein, the keyword for message being carried out traffic classification of described low side area configurations does not comprise the inbound port sign of message, divide and configuration by this kind, same flow classification rule table can be tied to all inbound ports of the network equipment, like this, just can realize the priority mapping function by enough fewer purpose flow classification rules, thereby the convection current classified resource takies when having reduced the realization priority mapping.
Fig. 3 is the method flow diagram of realizing priority mapping in the network equipment of the present invention, and with reference to Fig. 3, described method comprises the steps:
Step 301: in the network equipment, set up the flow classification rule table, described flow classification rule table is divided into high end regions and low end regions, wherein, be configured in described low end regions for the first kind keyword that message is carried out traffic classification, do not comprise the inbound port sign of message in the described first kind keyword, be configured in described high end regions for the other types keyword that message is carried out traffic classification;
Step 302: Establishment strategy table in the network equipment comprises the corresponding relation of stream type and priority mapping type among the described Policy Table;
Step 303: the network equipment carries out traffic classification according to described flow classification rule table to the message that receives, and determines the stream type that this message is affiliated;
Step 304: the network equipment is according to the stream type under the message, and coupling priority mapping type is carried out priority mapping according to the priority mapping type that matches to message from described Policy Table.
Below (provide 24 inbound ports) take the described network equipment as MDU, described first kind keyword is as dscp is example, priority mapping method of the present invention is elaborated.
Stage one, the exchange chip initialization.
During the exchange chip initialization of step S11:MDU equipment, distribute unique traffic classification engine implementation priority mapping, distribute and 256 flow classification rules of initialization.
As shown in Figure 4, these 256 flow classification rules are divided into two parts: be positioned at 64 of flow classification rule table low side, the address is 192-255; Be positioned at high-end 192 of flow classification rule table, the address is 0-191.
Step S12: will be configured in based on 64 flow classification rules of keyword " dscp " low side of flow classification rule table.
The priority number of dscp is 64, realize the priority mapping of dscp-＞802.1p by 64 flow classification rules of low side, search key only arranges dscp, shielding inbound port sign (realizing by mask) arranges action corresponding to every rule (strategy) for revising the 802.1p of message.
Because the keyword of these 64 flow classification rules does not include port-mark, therefore, is applicable to all inbound ports of MDU equipment, the dscp-of all inbound ports＞802.1p priority mapping can realize by these 64 flow classification rules.
Step S13: be clauses and subclauses of each port assignment in high-end 192 rules, totally 24 clauses and subclauses, the search key of these 24 clauses and subclauses is set to the inbound port sign, does not configure any modification action.
The priority of message will not remain unchanged when port did not configure priority mapping, but owing to be configured the mapping ruler of 64 dscp-＞802.1p, and these rules do not fit into the port keyword, only search according to the dscp value.Therefore, will bind a flow classification rule when port does not configure priority mapping to port, this rule is not carried out any operation, matches the flow classification rule of low side with the message of avoiding this inbound port to receive, can guarantee that the priority of message is not revised yet.
After initialization was finished, the low side of flow classification rule table disposed 64 flow classification rules, and the high end configuration of flow classification rule table has 24 flow classification rules, and remaining 168 clauses and subclauses are empty.
In the stage two, configure the priority mapping of each port.
In the actual conditions, be not to all configuration preference level mappings of all inbound ports of MDU, therefore, just in the time need to shining upon for certain inbound port configuration preference level of MDU equipment, to carry out following flow process:
Step S21: when needs shine upon for certain inbound port configuration preference level, in high-end 192 rules of flow classification rule table, search the flow classification rule that all are tied to this inbound port, delete these flow classification rules.
Comprise two kinds of situations:
To the first configuration of this inbound port, under this kind situation, this inbound port had a flow classification rule high-end binding after situation one, initialization were finished, and namely keyword is the flow classification rule of inbound port sign, deletes this flow classification rule and gets final product.
After situation two, initialization are finished the non-of this inbound port configured first, under this kind situation, this inbound port may have been bound many flow classification rules high-end, for example, based on 8 flow classification rules of keyword " 802.1p+ inbound port sign ", need deletion at all flow classification rules of high-end binding.
Step S22: according to port needs configuration preference level map type, configuration flow classifying rules in the priority mapping table.
If need the priority mapping of configuration dscp-＞802.1p, then behind the flow classification rule of step S21 deletion port binding, because last 64 flow classification rules only mate the dscp keyword, all of the port is all come into force, so do not need to do the mapping that any configuration just can realize dscp-＞802.1p.
If needing the priority mapping of configuration is not dscp-＞802.1p (comprising the non-trust priority of port arrangement, the various situations such as 802.1p-＞dscp, 802.1p-802.1p), behind the flow classification rule of step S21 deletion port binding, distribute flow classification rule to realize corresponding priority mapping in 192 flow classification rules according to the type of configuration preference level mapping again, concrete flow classification rule can be 802.1p+ inbound port sign in the past.Like this, if if the message that this port receives finds two flow classification rules (comprising in last 64), according to the attribute of traffic classification, the less flow classification rule (being front 192) in address comes into force.
From the above description as can be known, if the priority mapping mode of all 24 inbound port configurations is 802.1p-＞dscp, then because 802.1p has 8 priority, then the rule for distribution entry number is in the flow classification rule table: high-end 24*8 bar adds 64 of low side, is total up to 256.And other situations may be less than 256.
After finishing above-mentioned configuration, when the inbound port of MDU equipment receives message, will carry out traffic classification to the message that receives according to described flow classification rule table, determine the stream type that this message is affiliated, then, according to the stream type under the message, coupling priority mapping type is carried out priority mapping according to the priority mapping type that matches to message from the Policy Table.
By the above-mentioned flow classification rule method of salary distribution, dscp-＞802.1p mapping ruler is placed on low side (address is larger), can realize flexibly that this 64 rule to the binding of any port, reduces the required flow classification rule entry number of priority mapping.
Corresponding with said method, the present invention also provides a kind of device of realizing priority mapping in the network equipment.With reference to Fig. 5, described device comprises:
The flow classification rule table is set up module 10, be used for setting up the flow classification rule table at the network equipment, described flow classification rule table is divided into high end regions and low end regions, wherein, be configured in described low end regions for the first kind keyword that message is carried out traffic classification, do not comprise the inbound port sign of message in the described first kind keyword, be configured in described high end regions for the other types keyword that message is carried out traffic classification;
The Policy Table sets up module 20, is used at network equipment Establishment strategy table, comprises the corresponding relation of stream type and priority mapping type among the described Policy Table;
Preferably, described first kind keyword is dscp, and priority mapping type corresponding to stream type under the dscp is: dscp is to the mapping of 802.1p;
Described other types keyword comprises: 802.1p+ inbound port sign, priority mapping type corresponding to stream type under the 802.1p+ inbound port sign is: mapping or the distrust priority of 802.1p to the mapping of dscp, 802.1p to 802.1p.
Preferably, described other types keyword also comprises: the inbound port sign, priority mapping type corresponding to stream type under the inbound port sign is: do not configure priority mapping.
Preferably, described flow classification rule table is set up module concrete 10 and is used for:
When the exchange chip initialization of network equipment, set up described flow classification rule table, will be configured in based on the flow classification rule of keyword " dscp " described low end regions, will be configured in described high end regions based on the flow classification rule of keyword " inbound port sign ";
After initialization is finished, each inbound port to the network equipment carries out the priority mapping configuration, wherein, for the inbound port that needs configuration " dscp is to the mapping of 802.1p ", do not process, for the inbound port that needs configuration " 802.1p is to the mapping of dscp ", " 802.1p is to the mapping of 802.1p " or " distrust priority ", delete first this inbound port at flow classification rule corresponding to described high end regions, then be the flow classification rule of this inbound port configuration based on keyword " 802.1p+ inbound port sign " at described high end regions.
Alternatively, the described network equipment is multitenant unit (MDU).
In sum, the technique scheme of the embodiment of the invention, the flow classification rule table is divided into high end regions and low end regions, wherein, the keyword for message being carried out traffic classification of described low side area configurations does not comprise the inbound port sign of message, divide and configuration by this kind, same flow classification rule table can be tied to all inbound ports of the network equipment, like this, just can realize the priority mapping function by enough fewer purpose flow classification rules, thereby the convection current classified resource takies when having reduced the realization priority mapping.
The above; only for the better embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with the people of this technology in the disclosed technical scope of the present invention; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
Claims (10)
1. a method that realizes priority mapping in the network equipment is characterized in that, comprising:
In the network equipment, set up the flow classification rule table, described flow classification rule table is divided into high end regions and low end regions, wherein, be configured in described low end regions for the first kind keyword that message is carried out traffic classification, do not comprise the inbound port sign of message in the described first kind keyword, be configured in described high end regions for the other types keyword that message is carried out traffic classification;
Establishment strategy table in the network equipment comprises the corresponding relation of stream type and priority mapping type among the described Policy Table;
The network equipment carries out traffic classification according to described flow classification rule table to the message that receives, and determines the stream type that this message is affiliated;
The network equipment is according to the stream type under the message, and coupling priority mapping type is carried out priority mapping according to the priority mapping type that matches to message from described Policy Table.
2. the method for claim 1 is characterized in that:
Described first kind keyword is differentiated services code points dscp, and priority mapping type corresponding to stream type under the dscp is: dscp is to the mapping of 802.1p;
Described other types keyword comprises: 802.1p+ inbound port sign, priority mapping type corresponding to stream type under the 802.1p+ inbound port sign is: mapping or the distrust priority of 802.1p to the mapping of dscp, 802.1p to 802.1p.
3. method as claimed in claim 2 is characterized in that:
Described other types keyword also comprises: the inbound port sign, priority mapping type corresponding to stream type under the inbound port sign is: do not configure priority mapping.
4. method as claimed in claim 3 is characterized in that, sets up the flow classification rule table in the network equipment, comprising:
When the exchange chip initialization of network equipment, set up described flow classification rule table, will be configured in based on the flow classification rule of keyword " dscp " described low end regions, will be configured in described high end regions based on the flow classification rule of keyword " inbound port sign ";
After initialization is finished, each inbound port to the network equipment carries out the priority mapping configuration, wherein, for the inbound port that needs configuration " dscp is to the mapping of 802.1p ", do not process, for the inbound port that needs configuration " 802.1p is to the mapping of dscp ", " 802.1p is to the mapping of 802.1p " or " distrust priority ", delete first this inbound port at flow classification rule corresponding to described high end regions, then be the flow classification rule of this inbound port configuration based on keyword " 802.1p+ inbound port sign " at described high end regions.
5. the method for claim 1 is characterized in that:
The described network equipment is multitenant unit MDU.
6. a device of realizing priority mapping in the network equipment is characterized in that, comprising:
The flow classification rule table is set up module, be used for setting up the flow classification rule table at the network equipment, described flow classification rule table is divided into high end regions and low end regions, wherein, be configured in described low end regions for the first kind keyword that message is carried out traffic classification, do not comprise the inbound port sign of message in the described first kind keyword, be configured in described high end regions for the other types keyword that message is carried out traffic classification;
The Policy Table sets up module, is used at network equipment Establishment strategy table, comprises the corresponding relation of stream type and priority mapping type among the described Policy Table;
The traffic classification module is used for according to described flow classification rule table the message that receives being carried out traffic classification, determines the stream type that this message is affiliated;
The priority mapping module is used for according to the stream type under the message, and coupling priority mapping type is carried out priority mapping according to the priority mapping type that matches to message from described Policy Table.
7. device as claimed in claim 6 is characterized in that:
Described first kind keyword is differentiated services code points dscp, and priority mapping type corresponding to stream type under the dscp is: dscp is to the mapping of 802.1p;
Described other types keyword comprises: 802.1p+ inbound port sign, priority mapping type corresponding to stream type under the 802.1p+ inbound port sign is: mapping or the distrust priority of 802.1p to the mapping of dscp, 802.1p to 802.1p.
8. device as claimed in claim 7 is characterized in that:
Described other types keyword also comprises: the inbound port sign, priority mapping type corresponding to stream type under the inbound port sign is: do not configure priority mapping.
9. device as claimed in claim 8 is characterized in that, described flow classification rule table is set up module and specifically is used for:
When the exchange chip initialization of network equipment, set up described flow classification rule table, will be configured in based on the flow classification rule of keyword " dscp " described low end regions, will be configured in described high end regions based on the flow classification rule of keyword " inbound port sign ";
After initialization is finished, each inbound port to the network equipment carries out the priority mapping configuration, wherein, for the inbound port that needs configuration " dscp is to the mapping of 802.1p ", do not process, for the inbound port that needs configuration " 802.1p is to the mapping of dscp ", " 802.1p is to the mapping of 802.1p " or " distrust priority ", delete first this inbound port at flow classification rule corresponding to described high end regions, then be the flow classification rule of this inbound port configuration based on keyword " 802.1p+ inbound port sign " at described high end regions.
10. device as claimed in claim 6 is characterized in that:
The described network equipment is multitenant unit MDU.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105323159A (en) * | 2014-07-21 | 2016-02-10 | 上海中兴思秸通讯有限公司 | Data message processing method and device |
| CN106230791A (en) * | 2016-07-20 | 2016-12-14 | 杭州迪普科技有限公司 | A kind of method and apparatus of single business many strategies Rapid matching |
| CN111030931A (en) * | 2019-12-17 | 2020-04-17 | 苏州浪潮智能科技有限公司 | Method and equipment for forwarding priority label across network segments |
| CN112449744A (en) * | 2018-08-21 | 2021-03-05 | 华为技术有限公司 | Management method and device of optical network unit |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101447943B (en) * | 2008-12-26 | 2011-05-11 | 杭州华三通信技术有限公司 | Queue scheduling system and method |
| CN101567854B (en) * | 2009-05-26 | 2011-06-29 | 武汉烽火网络有限责任公司 | Ethernet data frame VLAN double-layer label processing device and method based on flow classification |
| CN102075431B (en) * | 2011-01-25 | 2013-09-25 | 武汉迈威光电技术有限公司 | Unshielded QoS flow scheduling strategy simultaneously supporting multiple priorities |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105323159A (en) * | 2014-07-21 | 2016-02-10 | 上海中兴思秸通讯有限公司 | Data message processing method and device |
| CN106230791A (en) * | 2016-07-20 | 2016-12-14 | 杭州迪普科技有限公司 | A kind of method and apparatus of single business many strategies Rapid matching |
| US10491636B2 (en) | 2016-07-20 | 2019-11-26 | Hangzhou Dptech Technologies Co., Ltd. | Managing security policy |
| CN112449744A (en) * | 2018-08-21 | 2021-03-05 | 华为技术有限公司 | Management method and device of optical network unit |
| CN111030931A (en) * | 2019-12-17 | 2020-04-17 | 苏州浪潮智能科技有限公司 | Method and equipment for forwarding priority label across network segments |
| CN111030931B (en) * | 2019-12-17 | 2021-07-20 | 苏州浪潮智能科技有限公司 | Method and equipment for forwarding priority label across network segments |
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| CN102891805B (en) | 2017-02-22 |
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