CN101594642B - Resource allocation method and resource allocation device used for communication network element device - Google Patents
Resource allocation method and resource allocation device used for communication network element device Download PDFInfo
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Abstract
The invention discloses a resource allocation method and a resource allocation device used for a communication network element device. The method comprises the following steps: according to the current load capacity and resource quantity to be allocated of each processing unit of the communication network element device, acquiring resource quota quantity of each processing unit; and allocating continuous resources of the resource quota quantity for each processing unit. The method and the device furthest ensure resource continuity at the same time of ensuring load balance of the processing unit to achieve the technical effect of improving the transmission efficiency.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of resource allocation methods for communication network element equipment and device.
Background technology
The processing unit of communication network element equipment adopts distributed frame usually.In order to realize usually the continuous resource (as address pool) of network element device need to being assigned on each processing unit of network element from user side to the data retransmission of processing the unit.
At present, when allocating resources to each processing unit, for guaranteeing each processing unit load balancing, usually the method that adopts is successively the resource of unit allocated quotas to be assigned to each processing unit, after all processing units assign, again successively the resource of unit allocated quotas is assigned to each processing unit, until assign.
The resource allocation methods that is used for communication network element equipment in correlation technique is discontinuous to the distribution of resource, will cause system forwards efficient low.
Summary of the invention
This bright purpose is to provide a kind of resource allocation methods for communication network element equipment and device, can solve in correlation technique resource is distributed discontinuous technical problem.
According to an aspect of the present invention, provide a kind of resource allocation methods for communication network element equipment, having comprised: according to current load and the stock number to be allocated of each processing unit of communication network element equipment, obtained the resource quota number of each processing unit; Continuous resource for each processing unit Resources allocation quota number.
Preferably, according to current load and the stock number to be allocated of each processing unit of communication network element equipment, the resource quota number that obtains each processing unit specifically comprises: according to stock number to be allocated and predetermined flat allocation quota, the quota number to be allocated of computational resource; According to current load and the quota number to be allocated of each processing unit, obtain the resource quota number of each processing unit.
Preferably, according to current load and the quota number to be allocated of each processing unit, the resource quota number that obtains each processing unit specifically comprises: step 1, sort each processing unit from small to large by current load; Step 2 is distributed the resource quota of 1 flat allocation quota, and the resource quota number of processing unit is added one for the processing unit of current load minimum, upgrade simultaneously the current load of processing unit, and the quota number to be allocated of resource is subtracted one; Step 3 judges whether quota number to be allocated is 0, if be not 0, and repeating step one, step 2 and step 3; If be 0, preserve the resource quota number of each processing unit.
Preferably, the continuous resource for each processing unit Resources allocation quota number specifically comprises: according to the resource quota number of each processing unit, the resource of resource quota number is correspondingly distributed to each processing unit.
Preferably, resource is address pool.
According to a further aspect in the invention, a kind of resource allocation device for communication network element equipment also is provided, comprise: the resource quota is counted computing module, be used for current load and stock number to be allocated according to each processing unit of communication network element equipment, obtain the resource quota number of each processing unit; Distribution module is used to the continuous resource of each processing unit Resources allocation quota number.
Preferably, the resource quota is counted computing module and comprised: setting unit is used for the setting unit quota; Quota to be allocated is counted computing unit, is used for according to stock number to be allocated and flat allocation quota the quota number to be allocated of computational resource; The resource quota is counted computing unit, is used for current load and quota number to be allocated according to each processing unit, obtains the resource quota number of each processing unit.
Preferably, the resource quota is counted computing unit and comprised: the sequence subelement is used for each processing unit is sorted from small to large by current load; Distribute subelement, the resource quota that is used to the processing unit of current load minimum to distribute 1 flat allocation quota, and be used for the resource quota number of processing unit is added is upgraded the current load of processing unit simultaneously, and the quota number to be allocated of resource is subtracted one; Judgment sub-unit is used for judging whether quota number to be allocated is 0; Storing sub-units, being used at judgment sub-unit judgement quota number to be allocated is 0 o'clock, preserves the resource quota number of current each processing unit.
Preferably, resource is address pool.
By means of above-mentioned at least one technical scheme of the present invention, by current load and the stock number to be allocated according to each processing unit, obtain the resource quota number of each processing unit, and then distribute the continuous resource of respective resources quota number for each processing unit, thereby realized in the load balancing that guarantees processing unit, farthest guarantee the resource continuity, thereby reach the technique effect that improves forward efficiency.
Description of drawings
Accompanying drawing is used to provide a further understanding of the present invention, and consists of the part of specification, is used for together with embodiments of the present invention explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the flow chart according to the resource allocation methods that is used for communication network element equipment of first embodiment of the invention;
Fig. 2 is the block diagram according to the resource allocation device that is used for communication network element equipment of second embodiment of the invention;
Fig. 3 is the flow chart according to the address pool distribution method that is used for communication network element equipment of third embodiment of the invention;
Fig. 4 is cut apart schematic diagram according to the continuous resource of third embodiment of the invention according to the preassignment quota.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, is not intended to limit the present invention.
In the following description, for the purpose of explaining, a plurality of specific details have been described, to provide thorough understanding of the present invention.Yet, obviously, in the situation that there is no these specific detail, also can realize the present invention, in addition, in the situation that do not conflict, namely in the situation that do not deviate from the spirit and scope that claims are illustrated, each details in following embodiment and embodiment can be carried out various combinations.
The first embodiment
Fig. 1 is the flow chart according to the resource allocation methods that is used for communication network element equipment of first embodiment of the invention.As shown in Figure 1, the resource allocation methods that is used for communication network element equipment according to first embodiment of the invention comprises the following steps:
Step S 102, according to current load and the stock number to be allocated of each processing unit of communication network element equipment, obtain the resource quota number of each processing unit;
Step S104 is the continuous resource of each processing unit Resources allocation quota number.
According to the resource allocation methods that is used for communication network element equipment of first embodiment of the invention by current load and stock number to be allocated according to each processing unit, obtain the resource quota number of each processing unit, and then distribute the continuous resource of respective resources quota number for each processing unit, thereby realized in the load balancing that guarantees processing unit, farthest guarantee the resource continuity, thereby reach the technique effect that improves forward efficiency.
Preferably, according to current load and the stock number to be allocated of each processing unit of communication network element equipment, the resource quota number that obtains each processing unit specifically comprises: according to stock number to be allocated and predetermined flat allocation quota, the quota number to be allocated of computational resource; According to current load and the quota number to be allocated of each processing unit, obtain the resource quota number of each processing unit.In order to accelerate dispensing rate, need predetermined unit quota Δ Q, if a certain section continuous resource R
xBut the allocated quotas number be N, can be expressed as N=R
x/ Δ Q.
Preferably, according to current load and the quota number to be allocated of each processing unit, the resource quota number that obtains each processing unit specifically comprises: step 1, sort each processing unit from small to large by current load; Step 2 is distributed the resource quota of 1 flat allocation quota, and the resource quota number of processing unit is added one for the processing unit of current load minimum, upgrade simultaneously the current load of processing unit, and the quota number to be allocated of resource is subtracted one; Step 3 judges whether quota number to be allocated is 0, if be not 0, and repeating step one, step 2 and step 3; If be 0, preserve the resource quota number of each processing unit.In the present embodiment, but that iteration distributes number of times and allocated quotas to count N is relevant, and Δ Q is larger, and N is less, and iterations is fewer, if but consider resource R
xNon-complete (the R of cutting apart to Δ Q
xCan not be divided exactly by Δ Q) situation, N more hour, when the distribution error of its introducing larger; Otherwise Δ Q is less, and N is larger, and iterations increases, and distributes simultaneously error to reduce.Adopt the method for the present embodiment, the distribution error maximum between each processing unit is no more than 2 times of Δ Q.Consider in communication network element equipment, to hundreds of thousands, the distribution error of introducing is in the acceptable scope several ten thousand for the resource quantity allotted on each processing unit.
Preferably, the continuous resource for each processing unit Resources allocation quota number specifically comprises: according to the resource quota number of each processing unit, the resource of resource quota number is correspondingly distributed to each processing unit.But the allocated quotas of current resource be assigned with complete after, can form a preassignment quota list Q
n，, n=1,2 ..., m, then system is according to the preassignment quota list of each processing unit, and the continuous resource subsegment of order-assigned is completed the final distribution to this continuous resource to the alignment processing unit.
Preferably, resource is address pool.
Because this method is reallocated to follow-up resource according to the current load of each processing unit, so subsequent allocations can not change the existing relations of distribution.Simultaneously, for each continuous resource R
x, at first each processing unit obtains corresponding quota, after allocation of quota is completed, then according to the configuration quantity that each processing unit obtains, cuts apart continuous resource to each processing unit, so for a continuous resource R
x, its cutting apart at most for once on each processing unit, thus guaranteed the division of resources least number of times is reached the suboptimization effect.
In addition, resource allocation methods in correlation technique is applicable to global resource is distributed unitedly, if deletion is a part of resource wherein, in the situation that do not change original relations of distribution, follow-up newly-increased resource can't reach the purpose of resource mean allocation according to the delivery mode, if and on the basis that original resource is distributed, employing still can realize the mean allocation of newly-increased resource according to the technical scheme of the embodiment of the present invention, and subsequent allocations does not exert an influence to existing resource distribution.
In network element operation, maintenance process, in the time of need to deleting resource, only need to manage throughout Resources allocation corresponding to this resource of deletion on the unit, other distribution of resource is unaffected, can not cause redistributing of resource, thereby guarantee that the online adjustment of resource does not affect the user to the use of resource.
Therefore, the present invention has not only solved the sharing of load problem of continuous resource, and in the situation that the existing distribute data of maintenance is constant, can realize Auto load-shifting to newly-increased resource.Configuration, increment dilatation and resource for similar resource in communication network element equipment installation and operation maintenance process are deleted, have application scenarios and important using value widely, the network element of the continuous resource management functions such as the scope of application includes but not limited to have address resource, virtual link resource is as network elements such as HA, PDSN, PDN GW, GGSN.
The second embodiment
Fig. 2 is the block diagram according to the resource allocation device that is used for communication network element equipment of second embodiment of the invention.As shown in Figure 2, the resource allocation device that is used for communication network element equipment of second embodiment of the invention comprises: the resource quota is counted computing module 202, be used for current load and stock number to be allocated according to each processing unit of communication network element equipment, obtain the resource quota number of each processing unit; Distribution module 204 is used to the continuous resource of each processing unit Resources allocation quota number.
Count by the resource quota resource quota number that computing module obtains each processing unit according to the resource allocation device that is used for communication network element equipment of second embodiment of the invention, then utilize distribution module to distribute the continuous resource of respective resources quota number for each processing unit, thereby realized in the load balancing that guarantees processing unit, farthest guarantee the resource continuity, thereby reach the technique effect that improves forward efficiency.
Preferably, the resource quota is counted computing module and comprised: setting unit is used for the setting unit quota; Quota to be allocated is counted computing unit, is used for according to stock number to be allocated and flat allocation quota the quota number to be allocated of computational resource; The resource quota is counted computing unit, is used for current load and quota number to be allocated according to each processing unit, obtains the resource quota number of each processing unit.In order to accelerate dispensing rate, need predetermined unit quota Δ Q, if a certain section continuous resource R
xBut the allocated quotas number be N, can be expressed as N=R
x/ Δ Q.
Preferably, the resource quota is counted computing unit and comprised: the sequence subelement is used for each processing unit is sorted from small to large by current load; Distribute subelement, the resource quota that is used to the processing unit of current load minimum to distribute 1 flat allocation quota, and be used for the resource quota number of processing unit is added is upgraded the current load of processing unit simultaneously, and the quota number to be allocated of resource is subtracted one; Judgment sub-unit is used for judging whether quota number to be allocated is 0; Storing sub-units, being used at judgment sub-unit judgement quota number to be allocated is 0 o'clock, preserves the resource quota number of current each processing unit.In the present embodiment, but that iteration distributes number of times and allocated quotas to count N is relevant, and Δ Q is larger, and N is less, and iterations is fewer, if but consider resource R
xNon-complete (the R of cutting apart to Δ Q
xCan not be divided exactly by Δ Q) situation, N more hour, when the distribution error of its introducing larger; Otherwise Δ Q is less, and N is larger, and iterations increases, and distributes simultaneously error to reduce.Adopt the method for the present embodiment, the distribution error maximum between each processing unit is no more than 2 times of Δ Q.Consider in communication network element equipment, to hundreds of thousands, the distribution error of introducing is in the acceptable scope several ten thousand for the resource quantity allotted on each processing unit.
Preferably, resource is address pool.
Because the resource allocation device that is used for communication network element equipment according to the present embodiment is reallocated to follow-up resource according to the current load of each processing unit, so subsequent allocations can not change the existing relations of distribution.Simultaneously, for each continuous resource R
x, at first each processing unit obtains corresponding quota, after allocation of quota is completed, then according to the configuration quantity that each processing unit obtains, cuts apart continuous resource to each processing unit, so for a continuous resource R
x, its cutting apart at most for once on each processing unit, thus guaranteed the division of resources least number of times is reached the suboptimization effect.
In addition, resource allocation device in correlation technique is applicable to global resource is distributed unitedly, if deletion is a part of resource wherein, in the situation that do not change original relations of distribution, follow-up newly-increased resource can't reach the purpose of resource mean allocation according to the delivery mode, if and on the basis that original resource is distributed, employing still can realize the mean allocation of newly-increased resource according to the technical scheme of the embodiment of the present invention, and subsequent allocations does not exert an influence to existing resource distribution.
In network element operation, maintenance process, in the time of need to deleting resource, only need to manage throughout Resources allocation corresponding to this resource of deletion on the unit, other distribution of resource is unaffected, can not cause redistributing of resource, thereby guarantee that the online adjustment of resource does not affect the user to the use of resource.
Therefore, the present invention has not only solved the sharing of load problem of continuous resource, and in the situation that the existing distribute data of maintenance is constant, can realize Auto load-shifting to newly-increased resource.Configuration, increment dilatation and resource for similar resource in communication network element equipment installation and operation maintenance process are deleted, have application scenarios and important using value widely, the network element of the continuous resource management functions such as the scope of application includes but not limited to have address resource, virtual link resource is as network elements such as HA, PDSN, PDN GW, GGSN.
The 3rd embodiment
Fig. 3 is the flow chart according to the address pool distribution method that is used for communication network element equipment of third embodiment of the invention.
In the mobile communication network element device, address pool is comprised of one or more continuous address fields usually, and the address field resource that these are continuous needs load sharing to each Service Processing Unit of system.When the terminal use activated the applied address resource, the traffic load balance processing unit according to the load distribution strategy of each unit, was assigned to a certain Service Processing Unit with user terminal.Terminal use's downlink message is forwarded by the interface disposable plates by this processing unit.Terminal use's uplink message, interface processing unit are by user's address, and query resource assignment profile data are determined corresponding Service Processing Unit, forward the packet to the Service Processing Unit at user place, complete the forwarding of terminal use's uplink message.
The configuration of address pool resource, usually be configured in the local network management client by Configuration Management Officer, the local network management server is responsible for completing the sharing of load processing of institute's resource allocation, NM server is according to Service Processing Unit quantity and the resource situation of system configuration, resource allocation flow during by Fig. 3 institute, generate corresponding resource assignment profile, and send each Service Processing Unit and the interface disposable plates of network element to.
Suppose that network element device has configured 5 Service Processing Units, each Service Processing Unit initial load is 0,4 sections continuous address pool resources that configuration management unit has been network element configuration, and flat allocation quota is C class subsegment (256 IP address).As shown in Figure 3, the address pool distribution method that is used for communication network element equipment according to third embodiment of the invention comprises the following steps: the address pool resource allocation process is as follows:
Step S301 obtains the current load of current each processing unit and the corresponding quota Q of initialization each processing unit;
Step S302, but calculated address section allocated quotas number, but address pool resource and allocated quotas are as shown in the table:
| Address field | Initial address | Termination address | Address mask | But allocated quotas number |
| 1 | 10.32.2.4 | 10.32.112.255 | 255.255.0.0 | 111 |
| 2 | 10.21.0.3 | 10.21.0.255 | 255.255.248.0 | 1 |
| 3 | 10.25.0.6 | 10.25.233.355 | 255.255.0.0 | 234 |
| 4 | 10.44.0.9 | 10.44.55.255 | 255.255.192.0 | 18 |
Step S303 obtains the each processing unit information on load, and the each processing unit load condition is sorted;
Step S304 distributes a quota to the minimum load processing unit, but and upgrade this processing unit load condition and allocated quotas number;
Step S305, but judge whether current address section allocated quotas assign, if do not assign, execution in step S303, if the current address section assigns, execution in step S306;
Step S306 as shown in Figure 4, according to the quota that each processing unit is obtained, is cut apart address field to the alignment processing unit; The each processing unit allocated quotas are as shown in the table:
| Address field | Processing unit 1 | Processing unit 2 | Processing unit 3 | Processing unit 4 | Processing unit 5 |
| 1 | 23 | 22 | 22 | 22 | 22 |
| 2 | 0 | 1 | 0 | 0 | 0 |
| 3 | 47 | 46 | 47 | 47 | 47 |
| 4 | 11 | 12 | 11 | 11 | 11 |
Step S307: judge whether all address fields assign, if do not assign, execution in step S301, if assign, process ends.Final allocation result is as shown in the table:
| Processing unit: 1 load: 20717 |
| Distribute the address subsegment |
| SegID＝1，10.32. 2. 4- 10.32. 24.255/255.255. 0. 0，total＝5884 SegID＝3，10.25. 0. 6- 10.25. 46.255/255.255. 0. 0，total＝12026 SegID＝4，10.44. 0. 9- 10.44.10.255/255.255.192. 0，total＝2807 |
| Processing unit: 2 loads: 20733 |
| Distribute the address subsegment |
| SegID＝1，10.32.25. 0- 10.32. 46.255/255.255. 0. 0，total＝5632 SegID＝2，10.21. 0. 3- 10.21. 0.255/255.255.248. 0，total＝253 SegID＝3，10.25.47. 0- 10.25.92.255/255.255. 0. 0，total＝11776 SegID＝4，10.44.11. 0- 10.44.22.255/255.255.192. 0，total＝3072 |
| Processing unit: 3 loads: 20480 |
| Distribute the address subsegment |
| SegID＝1，10.32.47. 0- 10.32.68.255/255.255. 0. 0，total＝5632 SegID＝3，10.25.93. 0- 10.25.139.255/255.255. 0. 0，total＝12032 SegID＝4，10.44.23. 0- 10.44.33.255/255.255.192. 0，total＝2816 |
| Processing unit: 4 loads: 20480 |
| Distribute the address subsegment |
| SegID＝1，10.32.69. 0- 10.32.90.255/255.255. 0. 0，total＝5632 |
| SegID＝3，10.25.140. 0- 10.25.186.255/255.255. 0. 0，total＝12032 SegID＝4，10.44.34. 0-10.44.44.255/255.255.192. 0，total＝2816 |
| Processing unit: 5 loads: 20480 |
| Distribute the address subsegment |
| SegID＝1，10.32.91. 0- 10.32.112.255/255.255. 0. 0，total＝5632 SegID＝3，10.25.187. 0-10.25.233.255/255.255. 0. 0，total＝12032 SegID＝4，10.44.45. 0-10.44.55.255/255.255.192. 0，total＝2816 |
As can be seen from the above table, because address field 2 address realms are smaller, but its allocated quotas are 1, be assigned to processing unit 2, all the other 3 address fields are assigned to 5 processing units, each processing unit load substantially keep in balance (error is less than 2 times of flat allocation quotas).
As mentioned above, by means of technique scheme of the present invention, by current load and the stock number to be allocated according to each processing unit, obtain the resource quota number of each processing unit, and then distribute the continuous resource of respective resources quota number for each processing unit, thereby realized farthest guaranteeing the resource continuity in the load balancing that guarantees processing unit, thereby reached the technique effect that improves forward efficiency.
The above is only the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (5)
1. a resource allocation methods that is used for communication network element equipment, is characterized in that, comprising:
According to current load and the stock number to be allocated of each processing unit of communication network element equipment, obtain the resource quota number of each described processing unit;
The continuous resource that distributes described resource quota number for described each processing unit;
Current load and stock number to be allocated according to each processing unit of communication network element equipment, the resource quota number that obtains each described processing unit specifically comprises: according to described stock number to be allocated and predetermined flat allocation quota, calculate the quota number to be allocated of described resource; According to current load and the described quota number to be allocated of each described processing unit, obtain the resource quota number of each described processing unit;
According to current load and the described quota number to be allocated of each described processing unit, the resource quota number that obtains each described processing unit specifically comprises:
Step 1 sorts each described processing unit from small to large by current load;
Step 2 is distributed the resource quota of 1 flat allocation quota, and the resource quota number of described processing unit is added one for the described processing unit of current load minimum, upgrade simultaneously the current load of described processing unit, and the quota number to be allocated of described resource is subtracted one;
Step 3 judges whether described quota number to be allocated is 0, if be not 0, and repeating step one, step 2 and step 3; If be 0, preserve the resource quota number of each described processing unit.
2. resource allocation methods according to claim 1, is characterized in that, specifically comprises for described each processing unit distributes the continuous resource of described resource quota number:
According to the resource quota number of each described processing unit, the described resource of described resource quota number is correspondingly distributed to each described processing unit.
3. resource allocation methods according to claim 1 and 2, is characterized in that, described resource is address pool.
4. a resource allocation device that is used for communication network element equipment, is characterized in that, comprising:
The resource quota is counted computing module, is used for current load and stock number to be allocated according to each processing unit of communication network element equipment, obtains the resource quota number of each described processing unit;
Distribution module is used to described each processing unit to distribute the continuous resource of described resource quota number;
Described resource quota is counted computing module and comprised: setting unit is used for the setting unit quota; Quota to be allocated is counted computing unit, is used for according to described stock number to be allocated and described flat allocation quota, calculates the quota number to be allocated of described resource; The resource quota is counted computing unit, is used for current load and described quota number to be allocated according to each described processing unit, obtains the resource quota number of each described processing unit;
The resource quota is counted computing unit and is comprised:
The sequence subelement is used for each described processing unit is sorted from small to large by current load;
Distribute subelement, be used to the resource quota of 1 flat allocation quota of described processing unit distribution of current load minimum, and be used for the resource quota number of described processing unit is added one, upgrade simultaneously the current load of described processing unit, the quota number to be allocated of described resource is subtracted one;
Judgment sub-unit is used for judging whether described quota number to be allocated is 0;
Storing sub-units, being used at the described quota number to be allocated of described judgment sub-unit judgement is 0 o'clock, preserves the resource quota number of current each described processing unit.
5. resource allocation device according to claim 4, is characterized in that, described resource is address pool.
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| EP2647164B1 (en) * | 2010-12-01 | 2017-05-17 | Xieon Networks S.à r.l. | Method and device for service provisioning in a communication network |
| WO2012162965A1 (en) * | 2011-08-26 | 2012-12-06 | 华为技术有限公司 | Method, system and network element for pushing application information |
| CN102932281B (en) * | 2012-10-31 | 2015-08-26 | 华为技术有限公司 | A kind of dynamic allocation method of resource and equipment |
| CN108287746B (en) * | 2017-01-09 | 2021-04-16 | 大唐移动通信设备有限公司 | Method and device for expanding or contracting virtual resources of EPC network element |
| CN106888170B (en) * | 2017-02-21 | 2019-11-01 | 中国联合网络通信集团有限公司 | Message forwarding method and system |
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| CN1509009A (en) * | 2002-12-19 | 2004-06-30 | 华为技术有限公司 | Business resource distribution method |
| EP1919245A2 (en) * | 2006-11-01 | 2008-05-07 | Samsung Electronics Co., Ltd | Apparatus and method for renewal-based resource allocation in a broadband wireless access communication system |
| CN101447939A (en) * | 2008-12-16 | 2009-06-03 | ***通信集团北京有限公司 | Functional distribution method and load balancer |
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| CN1509009A (en) * | 2002-12-19 | 2004-06-30 | 华为技术有限公司 | Business resource distribution method |
| EP1919245A2 (en) * | 2006-11-01 | 2008-05-07 | Samsung Electronics Co., Ltd | Apparatus and method for renewal-based resource allocation in a broadband wireless access communication system |
| CN101447939A (en) * | 2008-12-16 | 2009-06-03 | ***通信集团北京有限公司 | Functional distribution method and load balancer |
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