CN1870659A - Method for avoiding virtual local network distribution collision of adjunct virtual exchange control field - Google Patents
Method for avoiding virtual local network distribution collision of adjunct virtual exchange control field Download PDFInfo
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- CN1870659A CN1870659A CN 200510086104 CN200510086104A CN1870659A CN 1870659 A CN1870659 A CN 1870659A CN 200510086104 CN200510086104 CN 200510086104 CN 200510086104 A CN200510086104 A CN 200510086104A CN 1870659 A CN1870659 A CN 1870659A
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Abstract
This invention discloses a method for avoiding distribution conflict of virtual LAN of adjacent switch control domains including: applying different ID distribution rules in the virtual LAN of two adjacent switch domains, in which, said ID distribution rules include rules of big port and small sections and the ID distribution rules of the local and adjacent domains are determined based on the IP address values of the data transmission entities of both ends of a channel between the local domain and the adjacent domain, which can reduce distribution conflicts of virtual LAN of the local and adjacent domains to increase the success for resource application.
Description
Technical field
The present invention relates to network communications technology field, relate in particular to a kind of method of avoiding the VLAN distribution conflict of adjacent empty exchange control domain.
Background technology
Along with the continuous increase of Internet scale, various network services are fallen over each other to emerge in large numbers, and advanced multimedia system emerges in an endless stream.Because real time business is comparatively responsive to characteristics such as network transfer delay, delay jitters, when sudden high FTP (file transfer protocol (FTP)) being arranged on the network or contain the business such as HTTP (HTML (Hypertext Markup Language)) of image file, real time business will be subjected to very big influence; On the other hand, multimedia service a large amount of bandwidth that accounted for, like this, the key business that existing network will be carried out just is difficult to be transmitted reliably.So various QoS (Quality of Service, quality services) technology is arisen at the historic moment.IETF (internet engineering task group) has set up a lot of service models and mechanism, to satisfy the demand of QoS.
Multiple application and service and broadband multimedia services based on door, being included as the ordinary residence user provides the online game of abundant Video/Audio (video/audio) stream, VOD (video request program), video multicast, multimedia interactive, high bandwidth requirements, for the business user provides video conference, long-distance education, VPN (Virtual Private Network, Virtual Private Network), have Leased line that QoS ensures, IPHotel (IP phone in hotel) etc., become the important content of broadband operation.
Operator and the user of enterprises and institutions have the higher degree of awareness to ethernet technology and end-to-end ethernet technology.Ethernet technology becomes one of major technique of building unification of three nets, metropolitan area network future, and Ethernet service will have great development in the future market.
Demand at the business user, industry has proposed V-Switch (Virtual switch, empty exchange), GRE (Generic Routing Encapsulation, generic route encapsulation), L2TP (Layer2Tunneling Protocol, layer 2 tunneling protocol), MPLS (Multiprotocol LabelSwitching, multiprotocol label switching) VPN/VPDN (Virtual Private Dial-up Network, the virtual number of broadcasting private network) the special line scheme of multiple mode such as.
Wherein, Intelligent v-switch (the empty exchange of intelligence) technology is mainly used in to set up and stablizes; practical; economic operation level Metro Ethernet; can realize that QoS guarantees; network security protection; functions such as carrier-class network operation and management; possesses user management based on number; certain mobility; the core business managerial abilities such as centralized management that professional open management is chargeed; provide and comprise intelligent two laminar flow amounts scheduling; LAN (local area network (LAN)) special line; professional and service such as IP flow planning; the present deficiency of network on pure two layers of ability filled up in its appearance, and the construction of new period metropolitan area network is had important effect.
The V-Switch architecture possesses perfect ethernet vlan (Virtual Local AreaNetwork, VLAN) exchange and scheduling feature, the means of service dispatching, foundation and adjustment flexibly, and abundant and extendible two layer service providing capabilities, perfect oam instrument and information.Fig. 1 is the logical level and the functional mode figure of V-Switch architecture.
For the V-Switch system, when the business application, be responsible for resource allocation by VSC (Virtual SwitchControl, empty exchange control).But, the problem of resource allocation conflict may take place for adjacent two VSC territories, illustrate below:
Suppose to have two VSC to manage two adjacent domains respectively, wherein VSC1 manages the A territory, VSC2 management B territory.Have a cross-domain Channel (passage) X between A territory and the B territory, the VLAN of this Channel X (VLAN) scope is followed the area requirement according to Channel VLAN, 0≤M≤N≤4095 from M to N.
Initiate one from the A territory to the cross-domain V-Switch resource bid in B territory the time when operation layer, VSC1 will at first distribute the resource in A territory, and then distribute the resource on the Channel X, comprise VLAN ID (Identification, sign).Usually, VSC1 is Random assignment VLAN ID, supposes that this moment, the VLAN ID of VSC1 Random assignment was M.Therefore, if all resources all are allocated successfully, current resource connection application will obtain the VSC1 distribution on Channel X VLAN ID is M.VSC1 will notify VSC2 the resource that become the distribution of work in the A territory then, and request VSC2 continues the resource allocation of back, can identify the information of Channel X simultaneously and the VLAN ID M information of distributing on Channel X also sends to VSC2.
VSC2 should follow according to these information and find Channel X and distribute the resource identical with VSC1 thereon, comprises VLAN ID M, makes that the resource allocation in VSC1 and the VSC2 management domain is consistent.To check before VSC2 carries out resource allocation VLAN ID M whether can distribute by the free time, if the free time can distribute, then it dispensed, and then further distribute on the Channel X other resource and the resource in the B territory.
Yet in the general network operation, VSC2 also can accept resource bid simultaneously.That is to say, existing from the A territory to the B territory, at first pass through the resource bid of VSC1, be referred to as the A-B application, the resource bid of to the A territory, at first passing through VSC2 is also arranged from the B territory, be referred to as the B-A application.
When above-mentioned two kinds of applications when the close moment arrives adjacent two VSC respectively, the problem of resource allocation conflict may take place.That is to say that when the A-B application arrived VSC1, VSC2 had been passed through in the B-A application, but does not also arrive VSC1; Perhaps opposite situation, when the B-A application arrived VSC2, VSC1 had been passed through in the A-B application, but does not also arrive VSC2.With regard to the previous case, the A-B application will be at the VLAN ID M that has applied on the VSC1 on the Channel X, if the B-A application is at the VLAN ID M that has also applied on the VSC2 on the Channel X, the B-A application has arrived VSC1 after the A-B application, in the time of VLAN ID M on checking Channel X, find that this VLAN ID is assigned with away, so the B-A application will be failed at once.For latter event, same owing to VLAN ID is assigned with away, and cause A-B application failure.
Therefore, how to avoid the problem of the VLAN distribution conflict of adjacent empty exchange control domain, become the problem of industry common concern.
Summary of the invention
In view of above-mentioned existing in prior technology problem, the purpose of this invention is to provide a kind of method of avoiding the VLAN distribution conflict of adjacent empty exchange control domain.
The objective of the invention is to be achieved through the following technical solutions:
The invention provides a kind of method of avoiding the VLAN distribution conflict of adjacent empty exchange control domain, in the VLAN of two adjacent empty exchange control domains, adopt different sign allocation rule.
Described sign allocation rule comprises: hold allocation rule and small end allocation rule greatly.
Described big end allocation rule is meant:
In the VLAN scope according to from big to small order assignment VLAN ID;
Described small end allocation rule is meant:
In the VLAN scope according to from small to large order assignment VLAN ID.
In the VLAN in this territory, adopt big end allocation rule, in the VLAN of adjacent domains, adopt the small end allocation rule.
In the VLAN in this territory, adopt the small end allocation rule, in the VLAN of adjacent domains, adopt big end allocation rule.
According to the size of the IP address value of the Data Relay Entity at the cross-domain passage two ends between this territory and the adjacent domains, determine the sign allocation rule of the VLAN of this territory and adjacent domains.
When the IP address value of the Data Relay Entity of described cross-domain passage one end that is arranged in this territory during greater than the IP address value of the Data Relay Entity of the described passage other end that is arranged in adjacent domains, in the VLAN in this territory, adopt big end allocation rule, in the VLAN of adjacent domains, adopt the small end allocation rule.
When the IP address value of the Data Relay Entity of described cross-domain passage one end that is arranged in this territory during greater than the IP address value of the Data Relay Entity of the described passage other end that is arranged in adjacent domains, in the VLAN in this territory, adopt the small end allocation rule, in the VLAN of adjacent domains, adopt big end allocation rule.
When the IP address value of the Data Relay Entity of described cross-domain passage one end that is arranged in this territory during less than the IP address value of the Data Relay Entity of the described cross-domain passage other end that is arranged in adjacent domains, in the VLAN in this territory, adopt the small end allocation rule, in the VLAN of adjacent domains, adopt big end allocation rule.
When the IP address value of the Data Relay Entity of described cross-domain passage one end that is arranged in this territory during less than the IP address value of the Data Relay Entity of the described cross-domain passage other end that is arranged in adjacent domains, in the VLAN in this territory, adopt big end allocation rule, in the VLAN of adjacent domains, adopt the small end allocation rule.
As seen from the above technical solution provided by the invention, adopt method of the present invention, can reduce the generation of the VLAN distribution conflict of adjacent empty exchange control domain as far as possible, improve the success rate of resource bid.
Description of drawings
Fig. 1 is a V-Switch architectural model schematic diagram;
Fig. 2 is the structural representation that includes adjacent two VSC territories of cross-domain passage.
Embodiment
Core concept of the present invention is: adopt different sign allocation rule in the VLAN in adjacent two VSC territories, to avoid taking place the VLAN distribution conflict.
Described different sign allocation rule can be: hold allocation rule and segment allocation rule greatly.
Described big end allocation rule and small end allocation rule all are meant the distribution principle of VLAN ID in the Channel territory.
Described small end allocation rule is meant: in the VLAN scope according to from small to large order assignment VLANID.
If, the VLAN scope of Channel from M to N, wherein, 0≤M≤N≤4095.When then distributing VLAN ID, M be should distribute earlier, M+1, M+2 distributed then according to the small end allocation rule ... distribute N at last.
Because but the VLAN ID that distributed can come back to distribution state after being released, therefore, carry out the branch timing once more, should distribute minimum that among all idle assignable VLAN ID.
Described big end allocation rule is meant: corresponding with the small end allocation rule, in the VLAN scope according to from small to large order assignment VLAN ID.
If, the VLAN scope of Channel from M to N, wherein, 0≤M≤N≤4095.When then distributing VLAN ID, N be should distribute earlier, N-1, N-2 distributed then according to big end allocation rule ... distribute M at last.
Because but the VLAN ID that distributed can come back to distribution state after being released, therefore, carry out the branch timing once more, should distribute maximum that among all idle assignable VLAN ID.
Therefore, in the VLAN in adjacent two VSC territories, adopt different allocation rule that two kinds of schemes are arranged:
The one: adopt big end allocation rule in this territory, adopt the small end allocation rule at adjacent domains simultaneously;
The 2nd: adopt the small end allocation rule in this territory, adopt big end allocation rule at adjacent domains simultaneously.
But,, adopt different allocation rule to carry out cogent provision for the VLAN in adjacent two VSC territories, then from whole system, technical sophistication, performance difficulty if in whole V-Switch system.
Therefore,, need take a kind of means of easy enforcement, make adjacent two VSC territories can know separately to take which type of allocation rule, and the allocation rule of necessarily taking with adjacent domains is different from technical standpoint.
Because Channel two ends DRE (Date Relay Entity, Data Relay Entity) IP address must be different, when the DRE at the cross-domain Channel two ends between them is known in adjacent two VSC territories mutually, then can distinguish which DRE is this territory, which DRE is an adjacent domains, and can know the size of the IP address value of these two DRE.According to prior art, be easy to realize that adjacent two VSC territories know the purpose of the DRE at the cross-domain Channel two ends between them mutually.
Therefore, can make adjacent two VSC territories determine the allocation rule that should adopt separately according to the size of the IP address value of the IP address value of this territory DRE and adjacent domains DRE.
So, can have following technical scheme selective:
Scheme one: when the IP address value of this territory DRE during greater than the IP address value of adjacent domains DRE, big end allocation rule is adopted in this territory, and adjacent domains adopts the small end allocation rule;
Scheme two: when the IP address value of this territory DRE during less than the IP address value of adjacent domains DRE, big end allocation rule is adopted in this territory, and adjacent domains adopts the small end allocation rule;
Scheme three: when the IP address value of this territory DRE during greater than the IP address value of adjacent domains DRE, small end allocation rule is adopted in this territory, and adjacent domains adopts big end allocation rule;
Scheme four: when the IP address value of this territory DRE during less than the IP address value of adjacent domains DRE, small end allocation rule is adopted in this territory, and adjacent domains adopts big end allocation rule.
Technique scheme is easy to realize by computer software programs.
For the present invention there being further understanding, will illustrate the VLAN distribution conflict that adopts the method for the invention how to avoid adjacent two VSC territories below.
Still be example with adjacent two VSC territories of mentioning in the background technology.If there are two VSC to manage two adjacent domains respectively, wherein VSC1 manages the A territory, VSC2 management B territory.Have a cross-domain Channel X between A territory and the B territory, the VLAN scope of this Channel X from M to N, wherein, 0≤M≤N≤4095.
Channel X is by VSC1 and VSC2 managed together, and before not carrying out any resource bid, the M among the VLAN of Channel X is all idle to the VLAN ID between the N, can be used to distribute.
Suppose that the DRE of Channel X in the A territory is DRE A, the DRE in the B territory is DRE B, and the IP address value of DRE A is less than the IP address value of DRE B;
Suppose that VLAN ID M is not equal to VLAN ID N;
Suppose that the A territory is this territory, the B territory is an adjacent domains, and then the IP address value of this territory DRE is less than the IP address value of adjacent domains DRE.
Suppose that when the A-B application arrived VSC1, VSC2 had been passed through in the B-A application, but does not also arrive VSC1.
Because the IP address value of this territory DRE is less than the IP address value of adjacent domains DRE, therefore,
Should adopt big end allocation rule according to scheme two: VSC1, the A-B application will be assigned to VLAN IDN; VSC2 should adopt the small end allocation rule, and the B-A application will be assigned to VLAN ID M.
Should adopt the small end allocation rule according to scheme four: VSC1, the A-B application will be assigned to VLAN IDM; VSC2 should adopt big end allocation rule, and the B-A application will be assigned to VLAN ID N.
Because VLAN ID M is not equal to VLAN ID N, therefore no matter adopting scheme two still is scheme four, can avoid the VLAN distribution conflict in these two adjacent VSC territories of A territory and B territory, and A-B application and B-A application all can be succeedd.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (10)
1, a kind of method of avoiding the VLAN distribution conflict of adjacent empty exchange control domain is characterized in that: adopt different sign allocation rule in the VLAN of two adjacent empty exchange control domains.
2, method according to claim 1 is characterized in that, described sign allocation rule comprises: hold allocation rule and small end allocation rule greatly.
3, method according to claim 2 is characterized in that, described big end allocation rule is meant: in the VLAN scope according to from big to small order assignment VLAN ID;
Described small end allocation rule is meant:
In the VLAN scope according to from small to large order assignment VLAN ID.
4, method according to claim 2 is characterized in that: adopt big end allocation rule in the VLAN in this territory, adopt the small end allocation rule in the VLAN of adjacent domains.
5, method according to claim 2 is characterized in that: adopt the small end allocation rule in the VLAN in this territory, adopt big end allocation rule in the VLAN of adjacent domains.
6, according to each described method of claim 1 to 5, it is characterized in that:, determine the sign allocation rule of the VLAN of this territory and adjacent domains according to the size of the IP address value of the Data Relay Entity at the cross-domain passage two ends between this territory and the adjacent domains.
7, method according to claim 6, it is characterized in that: when the IP address value of the Data Relay Entity of described cross-domain passage one end that is arranged in this territory during greater than the IP address value of the Data Relay Entity of the described passage other end that is arranged in adjacent domains, in the VLAN in this territory, adopt big end allocation rule, in the VLAN of adjacent domains, adopt the small end allocation rule.
8, method according to claim 6, it is characterized in that: when the IP address value of the Data Relay Entity of described cross-domain passage one end that is arranged in this territory during greater than the IP address value of the Data Relay Entity of the described passage other end that is arranged in adjacent domains, in the VLAN in this territory, adopt the small end allocation rule, in the VLAN of adjacent domains, adopt big end allocation rule.
9, method according to claim 6, it is characterized in that: when the IP address value of the Data Relay Entity of described cross-domain passage one end that is arranged in this territory during less than the IP address value of the Data Relay Entity of the described cross-domain passage other end that is arranged in adjacent domains, in the VLAN in this territory, adopt the small end allocation rule, in the VLAN of adjacent domains, adopt big end allocation rule.
10, method according to claim 6, it is characterized in that: when the IP address value of the Data Relay Entity of described cross-domain passage one end that is arranged in this territory during less than the IP address value of the Data Relay Entity of the described cross-domain passage other end that is arranged in adjacent domains, in the VLAN in this territory, adopt big end allocation rule, in the VLAN of adjacent domains, adopt the small end allocation rule.
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| CNB200510086104XA CN100550918C (en) | 2005-07-15 | 2005-07-15 | Avoid the method for the VLAN distribution conflict of adjacent empty exchange control domain |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014101821A1 (en) * | 2012-12-28 | 2014-07-03 | Huawei Technologies Co., Ltd. | Local partitioning in a distributed communication system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014101821A1 (en) * | 2012-12-28 | 2014-07-03 | Huawei Technologies Co., Ltd. | Local partitioning in a distributed communication system |
| CN104798347A (en) * | 2012-12-28 | 2015-07-22 | 华为技术有限公司 | Local Partitioning in a Distributed Communication System |
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