CN103560964B - Method and device for sharing VLAN load based on multilink semi-transparent TRILL protocol - Google Patents
Method and device for sharing VLAN load based on multilink semi-transparent TRILL protocol Download PDFInfo
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- CN103560964B CN103560964B CN201310518661.9A CN201310518661A CN103560964B CN 103560964 B CN103560964 B CN 103560964B CN 201310518661 A CN201310518661 A CN 201310518661A CN 103560964 B CN103560964 B CN 103560964B
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Abstract
The invention provides a method and device for improving load sharing and stability according to VLANs in a TRILL protocol. The method comprises the steps that each multicast tree creates a counter, and AVFs in the multicast trees are counted through an AVF addition and deletion increment algorithm; user interfaces are increased, and user instructions are received to select configuration as a stability priority mode or a load priority mode; when the stability priority mode is selected, the deletion and the addition of the AVFs are not carried out on all the VLANs and the multicast trees are redistributed before the counting values of the counters of the multicast trees reach a preset threshold value T; when the load priority mode is selected and the AVFs are deleted, the AVFs in the multicast trees with the counters highest in counting value in the current multicast tree set are distributed to the multicast trees with the AVFs deleted, and when the AVFs are added, the multicast trees with the counters smallest in counting value in the current multicast tree set are selected. The method and device can guarantee the stability of the VLANs using the multicast trees to the largest degree, meanwhile, the problem of the load sharing is considered, and the flow difference of all links cannot be too large.
Description
Technical field
The present invention relates to communication technical field, more particularly, to a kind of TRILL（TRansparent Interconnect of
Lots of Links, the translucent interconnection of multi-link）The method and apparatus that agreement increase shares stability by vlan load.
Background technology
TRILL protocol is related to VLAN, in the prior art, for anti-loops, a VLAN on a network segment
In all local flow the same port from same RB must go out, enter TRILL network, this RB is referred to as the AVF of this VLAN.
In TRILL network, there is a more than multicast tree, different multicast tree employs different topological structures, in order to realize chain
The load balancing of road flow.Multicast data traffic is on entrance RB by inquiring about which group Ingress list item determines using
Broadcast tree.The Ingress list item of TRILL is organized with VLAN form, and the flux of multicast of different VLAN uses different multicast tree to forward.
As a rule, the number of multicast tree is much smaller than the number of VLAN, and a therefore usual multicast tree can be used by multiple VLAN.
When the quantity of the AVF that a RB holds VLAN changes, the tree that each VLAN selects also can change.These
Change may result in original VLAN and changed the multicast tree using so that before each RB of the whole network all produces identical change,
The flux of multicast of this VLAN may be lost or loop.And this phenomenon desired stability is not inconsistent with certain customers, that is, one
VLAN should it be deleted before all-the-time stable using same paths forward.This problem is deleted in the AVF of VLAN
When show be especially apparent.
Content of the invention
In view of this, the present invention provides the method and apparatus that a kind of TRILL protocol increase shares stability by vlan load,
To solve in prior art, when RB holds the quantity of the AVF of VLAN and changes, the multicast tree that each VLAN selects also occurs
Change, thus lead to the flux of multicast loss of VLAN or the problem of loop.
For reaching above-mentioned purpose, the present invention provides a kind of method that TRILL protocol increase shares stability by vlan load,
Wherein the method includes：
Step A, every multicast tree are respectively created a counter, add and delete delta algorithm by AVF to multicast tree
In all AVF count；
Step B, when the count value of the counter of any one multicast tree in multicast tree group exceedes default threshold value T, point
The multicast tree of the count value minimum to current multicast tree group Counter for the load AVF, until the described counter exceeding upper threshold
Count value be not more than threshold value T.
Preferably, also include：
When step C, multicast tree deletion AVF, immediately from the count value highest multicast tree of current multicast tree group Counter
On redistribute AVF and delete the multicast tree of AVF to this；When interpolation AVF is in multicast tree group, current multicast tree group is selected to fall into a trap
The multicast tree of the count value minimum of number device.
Preferably, also include：Increase user interface, user interface receive user instruction option and installment is the preferential mould of stability
Formula or load mode of priority；When user selects stability mode of priority, execution step A and B；When user selects to load preferential mould
During formula, execution step A and C；
Preferably, described threshold value T is currently all VLAN equally loadeds to mean value during each multicast tree.
Preferably, described AVF adds and deletes delta algorithm and is specially：
Add an AVF, the counter in the currently used multicast tree of this AVF adds 1；
Delete an AVF, the counter in the original multicast tree using of this AVF subtracts 1.
The present invention also provides a kind of TRILL protocol increase to share the device of stability by vlan load, and this device includes counting
Digital-to-analogue block and stability priviledge module, wherein：
Counting module, for being respectively created a counter for every multicast tree, is added by AVF and deletion algorithm is to group
Broadcast all AVF in tree to count；
Stability priviledge module, for when the count value of the counter of any one multicast tree in multicast tree group exceed default
Threshold value T when, share AVF to the minimum multicast tree of the count value of current multicast tree group Counter, exceed threshold value until described
The count value of the counter of the upper limit is not more than threshold value T；
Preferably, also include：Load mode of priority module, for as multicast tree deletion AVF, immediately from current multicast
AVF is redistributed on the count value highest multicast tree of tree group Counter and deletes the multicast tree of AVF to this, when adding AVF
During in multicast tree group, select the minimum multicast tree of the count value of current multicast tree group Counter.
Preferably, also include：Select unit, for receiving the user instruction from user interface, option and installment is stable
Property mode of priority or load mode of priority；
When user selects stability mode of priority, enablement count module and stability priviledge module；
When user select load priviledge module when, enablement count module and load priviledge module；
Preferably, described threshold value T is currently all VLAN equally loadeds to mean value during each multicast tree.
Preferably, described AVF adds and deletes delta algorithm and is specially：
Add an AVF, the counter in the currently used multicast tree of this AVF adds 1；
Delete an AVF, the counter in the original multicast tree using of this AVF subtracts 1.
Compared with prior art, the present invention can farthest ensure that each VLAN on entrance RB uses the steady of multicast tree
Qualitative, take into account the problem that different vlan loads share so that the flow difference of each link will not be excessive simultaneously.
Brief description
Fig. 1 is to increase the method flow diagram sharing stability by vlan load in one embodiment of the present invention；
Fig. 2 is to increase the building-block of logic sharing stability devices by vlan load in one embodiment of the present invention.
Specific embodiment
For making the objects, technical solutions and advantages of the present invention become more apparent, develop simultaneously embodiment referring to the drawings, right
Scheme of the present invention is described in further detail.
As a example implemented in software, the present invention provides a kind of TRILL protocol increase to share the device of stability by vlan load,
This device runs on network devices as a logic device, refer to Fig. 1, in the hardware structure of the network equipment, generally wraps
Include CPU, internal memory, nonvolatile memory and other hardware, this device is generally understood that the computer program in internal memory,
The logic device being formed after being run by CPU, this logic device includes：Counting module, stability priviledge module, load are preferential
Module and selecting module.Refer to Fig. 2, in this logic device running, execute following processing procedure.
Step S201, counting unit is respectively created a counter for every multicast tree, is added by AVF and deletes increment
Algorithm counts to AVF all in multicast tree；
In this step, described AVF adds and deletes delta algorithm and is specially：When adding an AVF, then this AVF is current
The multicast tree using, that is, the counter that with the addition of in the multicast tree of this AVF adds 1；When deleting an AVF, then this AVF is former
Subtract 1 come the counter in the multicast tree to use.
Step S202, increases user interface, and the user instruction option and installment that select unit receives from user interface is steady
Qualitative mode of priority or load mode of priority；
Step S203, when user's option and installment is stability mode of priority, the meter of any one multicast tree in multicast tree group
When the count value of number device reaches default threshold value T, share AVF to the minimum multicast of current multicast tree group Counter count value
Tree, until the count value of the described counter reaching upper threshold is less than threshold value T；
Specifically, described threshold value T is currently all VLAN equally loadeds to mean value during each multicast tree.
Specifically, such as now there are two multicast tree in multicast tree group, respectively root1 and root2, if currently used
The VLAN of root1 and root2 is 20, and now threshold value T is 20.In practice, the value of described threshold value T is not done
Especially limit, this threshold value T can be that a dynamic value may also be a static value, and those skilled in the art can be according to reality
Demand is adjusted to assignment, will not be described in detail herein.
Step S204, when user's option and installment is load mode of priority, any one multicast tree deletion in multicast tree group
During AVF, AVF is redistributed from the count value highest multicast tree of current multicast tree group Counter to this multicast tree immediately；
When interpolation AVF is in multicast tree group, select the minimum multicast tree of the count value of current multicast tree group Counter.
To elaborate step S103 and step S104 below by way of a specific embodiment：
Assume that the entrance RB of now TRILL network has three multicast tree, respectively root3, root4 and root5,
VLAN10 to 15 uses root3, and VLAN16 to 21 uses root4, VLAN22 to use root5 to 27.In the prior art, if
Now delete the AVF of VLAN10 to 15, VLAN16 can be redistributed to 27, for example, redistribute rear VLAN16 to 19 and use
Root3, VLAN20 use root4, VLAN24 to use root5 to 27 to 23.For the user requiring network stabilization, VLAN16
Change to 19, VLAN22 to 23 forward-path is completely unnecessary, and that is, VLAN16 to 19 can be continuing with root4 completely,
VLAN22 to 23 can be continuing with root5 completely.
If above example is after introducing the method for the invention, when user is steady by user interface option and installment
During qualitative mode of priority, threshold value T is preset as the mean value that VLAN10 to VLAN27 is evenly distributed to three multicast tree, i.e. threshold value T
For 6.
As the AVF deleting VLAN10 to 15, the counter due to now root4 and root5 is 6, not
Exceed threshold value T, now multicast tree is not redistributed to VLAN16 to 27, VLAN16 to 21 is continuing with root4, VLAN22 to 27
It is continuing with root5, thus ensure that stablizing of VLAN16 to 27 forward-path.
Further, if now root4 increases an AVF newly, the count value of root4 counter adds 1, has exceeded threshold value 6, than
Compared with the count value of other multicast tree counters, now the count value of the counter of root3 is minimum, and then root4 distribution AVF gives
Root3, until the count value of the counter of root4 is less than threshold value T.Specifically, when root4 distributes an AVF to root3,
The count value of the counter of root4 subtracts 1, and now the count value of root4 counter is 6, less than threshold value T, in being off continuing
Distribute AVF for root3.
It is noted that under stability mode of priority, when increase multicast tree is in multicast tree group, comparative group first
Broadcast the count value of the counter of other each multicast tree in tree group, only when the count value having multicast tree counter exceedes threshold value T
Share AVF to the multicast tree newly increasing, otherwise remain stablizing of each multicast tree.
As seen from the above embodiment, under stability mode of priority, the counting of any one multicast tree in multicast tree group
Before the count value of device exceedes threshold value, multicast tree is not redistributed to whole VLAN, thus ensure that other to greatest extent
The stablizing of VLAN forward-path.
When it is to load mode of priority that user passes through user interface option and installment, still, now taking above-described embodiment as a example
The entrance RB of TRILL network still has three multicast tree, respectively root3, root4 and root5, when multicast table is stablized,
VLAN10 to 15 uses root3, and VLAN16 to 21 uses root4, VLAN22 to use root5 to 27.In load mode of priority
Under, do not introduce threshold value T and multicast tree VLAN quantity is limited.
Assume now to delete the AVF of VLAN10, the count value of the counter of root3 subtracts 1, compares the meter of other multicast tree
After the count value of number device, find that the count value of root4 and root5 counter is 6, when multicast tree counter in multicast tree group
Count value is identical when cannot preferably go out the minimum or maximum multicast tree of counter, and system can be defaulted as the count value of nonce counter
It is maximum or minimum, then arbitrary from count value highest root4 of current multicast tree group Counter and root5 immediately
A VLAN is taken to distribute to root3 in multicast tree it is assumed that taking a VLAN16 to distribute to root3 from root4, at this point for making
For the VLAN of root4 and root5, the only forward-path of VLAN16 there occurs change, thus farthest ensure that
The stablizing of other VLAN forward-paths.When need be further added by a VLAN28 in multicast tree group when, the relatively counting of each multicast tree
The count value of device, now the counter of root4 is minimum, then VLAN28 is added in root4.Now root3,
The count value of the counter of root4 and root5 is 6.
Further, if now deleting multicast tree root3, compare the counting of other multicast tree counters in multicast tree group
Value, that is, compare the count value of the counter of root4 and root5, finds that the count value of root4 and root5 counter is equal more afterwards
For 6, system thinks that the count value of the counter of current root4 and root5 is minimum, and then root3 distributes a VLAN and gives
Arbitrary multicast tree in root4 and root5 is it is assumed that one VLAN of now root3 distribution, to root4, compares after being assigned again
The count value of the counter of root4 and root5, now the count value of the counter of root5 is minimum, then root3 reallocation one
Individual VLAN, to root5, repeats above assigning process, until the VLAN using root3 is fully allocated to root4 and root5.
Further, if now increasing new multicast tree root6 in multicast tree group, compare in current multicast tree group
The count value of each multicast tree counter, now the count value of root4 and root5 counter be 9, now system will be considered that
The count value of root4 and root5 counter is maximum, then distributes one in arbitrary multicast tree from root4 and root5
VLAN is to root6 it is assumed that one VLAN of now root4 distribution, to root6, compares root4's and root5 again after being assigned
The count value of counter, the count value of the counter of current root5 is maximum, then distributes a VLAN again from root5 and gives
Root6, repeats above allocation step, until the count value of the counter of root6 reaches currently all VLAN equally loadeds to institute
There is the mean value 6 during multicast tree.It is noted that in practice, all VLAN exist can not mean allocation completely
Situation, so the negated integer of above-mentioned mean value is allowed.
It is emphasized that cannot preferably go out counter when the count value of the counter of multicast tree in multicast tree group is identical
During little or maximum multicast tree, the count value that system can be defaulted as nonce counter is maximum or minimum, then randomly chooses
One multicast tree.
As seen from the above embodiment, under load mode of priority, delete behaviour when multicast tree arbitrary in multicast tree group carries out AVF
When making, suitable AVF is distributed immediately from the count value highest multicast tree of counter and deletes the multicast tree of AVF to this,
All VLAN are not carried out redistributing using multicast tree during this, thus ensure that other VLAN turn to greatest extent
Send out stablizing of path, and taken into account vlan load and share so that the flow difference of each link will not be excessive.
Relatively for existing program, the present invention passes through to arrange counter to AVF countings all in multicast tree, passes through to increase simultaneously
Plus user interface, provide the user two kinds can lectotype, user can according to the actual selection of network be suitable for pattern or according to
Actual conditions cooperation is suitable for, you can the stability of the multicast tree being used with each VLAN on maximum guarantee entrance RB, simultaneously
The problem of different vlan loads can be taken into account, the flow difference making each link will not be excessive.
By the description of above example, it will be appreciated by those skilled in the art that the unit in device in embodiment can close
And for a unit it is also possible to be further split into multiple subelements.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement done etc., should be included within the scope of protection of the invention.
Claims (10)
1. a kind of vlan load sharing method based on multi-link translucent interconnection TRILL protocol is it is characterised in that methods described
Including：
Step A：Every multicast tree is respectively created a counter, turns originator AVF by assigned vlan and adds and deletion increment calculation
Method counts to AVF all in multicast tree；
Step B：When the count value of the counter of any one multicast tree in multicast tree group exceedes default threshold value T, share AVF
To the multicast tree that the count value of current multicast tree group Counter is minimum, until the counting of the described counter exceeding upper threshold
Value is not more than threshold value T.
2. the method for claim 1 is it is characterised in that methods described also includes：
Step C：During multicast tree deletion AVF, weight from the count value highest multicast tree of current multicast tree group Counter immediately
New distribution AVF deletes the multicast tree of AVF to this；When interpolation AVF is in multicast tree group, select current multicast tree group Counter
The minimum multicast tree of count value.
3. method as claimed in claim 2 is it is characterised in that methods described also includes：
Increase user interface, user interface receive user instruction option and installment is stability mode of priority or load mode of priority；
When user selects stability mode of priority, execution step A and B；
When user selects load mode of priority, execution step A and C.
4. the method for claim 1 is it is characterised in that described threshold value T is currently all VLAN equally loadeds to each group
Broadcast mean value during tree.
5. the method for claim 1 is it is characterised in that described AVF adds and deletion delta algorithm is specially：
Add an AVF, the counter in the currently used multicast tree of this AVF adds 1；
Delete an AVF, the counter in the original multicast tree using of this AVF subtracts 1.
6. a kind of vlan load sharing device based on TRILL protocol is it is characterised in that described device includes：
Counting module, for being respectively created a counter for every multicast tree, is added by AVF and deletion algorithm is to multicast
In tree, all AVF count；
Stability priviledge module, for exceeding default threshold when the count value of the counter of any one multicast tree in multicast tree group
During value T, share AVF to the minimum multicast tree of the count value of current multicast tree group Counter, exceed upper threshold until described
Counter count value be not more than threshold value T.
7. device as claimed in claim 6 is it is characterised in that described device also includes：
Load mode of priority module, for as multicast tree deletion AVF, immediately from the count value of current multicast tree group Counter
The multicast tree that AVF deletes AVF to this is redistributed on highest multicast tree, when interpolation AVF is in multicast tree group, selects to work as
The minimum multicast tree of the count value of front multicast tree group Counter.
8. device as claimed in claims 6 or 7 is it is characterised in that described device also includes：
Select unit, for receiving the user instruction from user interface, option and installment is stability mode of priority or load is excellent
First pattern；
When user selects stability mode of priority, enablement count module and stability priviledge module；
When user select load mode of priority when, enablement count module and load mode of priority module.
9. device as claimed in claim 6 is it is characterised in that described threshold value T is currently all VLAN equally loadeds to each group
Broadcast mean value during tree.
10. device as claimed in claim 6 is it is characterised in that described AVF adds and deletion delta algorithm is specially：
Add an AVF, the counter in the currently used multicast tree of this AVF adds 1；
Delete an AVF, the counter in the original multicast tree using of this AVF subtracts 1.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101247348A (en) * | 2008-03-12 | 2008-08-20 | 华为技术有限公司 | Load sharing method and device |
| CN102316033A (en) * | 2011-09-06 | 2012-01-11 | 中兴通讯股份有限公司 | Method for assigning distribution trees and system thereof |
| CN103023798A (en) * | 2011-09-27 | 2013-04-03 | 华为技术有限公司 | Method for assigning virtual local area network and network element |
| CN103209132A (en) * | 2012-01-16 | 2013-07-17 | 华为技术有限公司 | Method, device and system for achieving multicast in transparent interconnection of lots of links (TRILL) network |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8369335B2 (en) * | 2010-03-24 | 2013-02-05 | Brocade Communications Systems, Inc. | Method and system for extending routing domain to non-routing end stations |
| US9154394B2 (en) * | 2010-09-28 | 2015-10-06 | Brocade Communications Systems, Inc. | Dynamic latency-based rerouting |
-
2013
- 2013-10-28 CN CN201310518661.9A patent/CN103560964B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101247348A (en) * | 2008-03-12 | 2008-08-20 | 华为技术有限公司 | Load sharing method and device |
| CN102316033A (en) * | 2011-09-06 | 2012-01-11 | 中兴通讯股份有限公司 | Method for assigning distribution trees and system thereof |
| CN103023798A (en) * | 2011-09-27 | 2013-04-03 | 华为技术有限公司 | Method for assigning virtual local area network and network element |
| CN103209132A (en) * | 2012-01-16 | 2013-07-17 | 华为技术有限公司 | Method, device and system for achieving multicast in transparent interconnection of lots of links (TRILL) network |
Non-Patent Citations (1)
| Title |
|---|
| VLAN based Tree Selection for Multi-destination Frames;Y. Li，W. Hao等;《draft-yizhou-trill-tree-selection》;20120305;全文 * |
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