CN105812267B - A kind of multicast tree switching method and device - Google Patents
A kind of multicast tree switching method and device Download PDFInfo
- Publication number
- CN105812267B CN105812267B CN201610173884.XA CN201610173884A CN105812267B CN 105812267 B CN105812267 B CN 105812267B CN 201610173884 A CN201610173884 A CN 201610173884A CN 105812267 B CN105812267 B CN 105812267B
- Authority
- CN
- China
- Prior art keywords
- multicast
- tree
- multicast group
- router
- shortest path
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/12—Avoiding congestion; Recovering from congestion
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/16—Multipoint routing
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The present invention provides a kind of multicast tree switching method and device, applied to the controller of SDN, this method comprises: obtaining the multicast packet total flow of all multicast groups of convergent point forwarding；The total flow is determined beyond maximum stream flow threshold value, selection needs to be switched to the multicast group of shortest path tree in the multicast group of shared tree；It sends shortest path tree and handovers messages to each router, wherein the shortest path tree handover request carries the information of the multicast group for needing to be switched to shortest path tree.Convergent point burden can accurately and effectively be mitigated through the invention.
Description
Technical field
The present invention relates to network communication technology field more particularly to a kind of multicast tree switching methods and device.
Background technique
PIM-SM (Protocol Independent Multicast-Sparse Mode, the sparse mould of Protocol Independent Multicast-
Formula) belong to the multicast routing protocol of sparse mode.In pim-sm domain, the multicast data traffic in the multicast group of shared tree is by RP
(Rendezvous Point, convergent point) transfer.
And prior art is responsible for detection group by the DR (Designated Router, Designated Router) of recipient side
The multicast data traffic in group is broadcast, initiates multicast tree switching as final jump (last hop) router, i.e., by multicast group
Forward-path from RPT (Rendezvous Point Tree, shared tree) be switched to SPT (Shortest Path Tree, it is most short
Path tree).Therefore, the prior art can not carry out multicast tree switching according to RP actual loading.
Summary of the invention
The purpose of the present invention is to provide a kind of multicast tree switching method and devices, to be executed according to the load of convergent point
The switching of multicast tree.
For achieving the above object, the present invention provides technical solutions:
The present invention provides a kind of multicast tree switching method, the road applied to the controller of software defined network SDN, in SDN
PIM-SM agreement is run by device, method includes:
Obtain the multicast packet total flow of all multicast groups of convergent point forwarding；
Total flow is determined beyond maximum stream flow threshold value, selection needs to be switched to shortest path tree in the multicast group of shared tree
Multicast group；
It sends shortest path tree and handovers messages to each router, wherein shortest path tree handover request, which carries, needs to be switched to
The information of the multicast group of shortest path tree.
The present invention also provides a kind of multicast tree switching device, applied to the controller of software defined network SDN, in SDN
Router runs PIM-SM agreement, and device includes:
Multicast control unit, the multicast packet total flow of all multicast groups for obtaining convergent point forwarding；Determine total stream
Amount exceeds maximum stream flow threshold value, and selection needs to be switched to the multicast group of shortest path tree in the multicast group of shared tree；
Transmission unit handovers messages to each router for sending shortest path tree, wherein shortest path tree handover request
Carry the information for needing to be switched to the multicast group of shortest path tree.
The present invention is being confirmed using the multicast data traffic of SDN controller perception convergent point it can be seen from above description
When convergent point flow overloads, the switching from shared tree to shortest path tree is initiated, to realize according to convergent point actual loading essence
Quasi- switching multicast tree, effectively mitigates the burden of convergent point.
Detailed description of the invention
Fig. 1 is the schematic diagram of the SDN network shown in the embodiment of the present invention；
Fig. 2 is the multicast tree switching method flow chart shown in the embodiment of the present invention；
Fig. 3 A is the forward-path schematic diagram in the multicast tree shown in the embodiment of the present invention；
Fig. 3 B is forward-path schematic diagram in multicast tree after switching shown in the embodiment of the present invention；
Fig. 4 A is the structural schematic diagram of the SDN network internal controller shown in the embodiment of the present invention；
Fig. 4 B is the structural schematic diagram of the multicast tree switching device of controller in Fig. 4 A.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistented with the present invention.On the contrary, they be only with it is such as appended
The example of device and method being described in detail in claims, some aspects of the invention are consistent.
It is only to be not intended to limit the invention merely for for the purpose of describing particular embodiments in terminology used in the present invention.
It is also intended in the present invention and the "an" of singular used in the attached claims, " " and "the" including most shapes
Formula, unless the context clearly indicates other meaning.It is also understood that term "and/or" used herein refers to and includes
One or more associated any or all of project listed may combine.
It will be appreciated that though various information, but this may be described using term first, second, third, etc. in the present invention
A little information should not necessarily be limited by these terms.These terms are only used to for same type of information being distinguished from each other out.For example, not departing from
In the case where the scope of the invention, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as
One information.Depending on context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determination ".
The embodiment of the present invention proposes a kind of multicast tree switching method, and this method utilizes SDN (Software
DefinedNetwork, software defined network) controller perception pim-sm domain in all-router operating status, recipient side
Designated Router when the multicast data traffic that convergent point forwards transfinites, will be specified shared according to the notice of SDN controller
The multicast group of tree is switched to the multicast group of shortest path tree, to mitigate the burden of convergent point.
The control plane and data planar separation of the network equipment in SDN network are connected entirely between the network equipment.SDN
Network internal controller can sensing network equipment operating status, execute network topology collect, for the network equipment generate execute data
The processing such as the flow table of forwarding and execution flow control.
It include: SDN controller 120, router R1~R5, group in SDN network provided in an embodiment of the present invention shown in FIG. 1
Broadcast source 110, recipient Client1 and recipient client2.Wherein, router R1 is the Designated Router of 110 side of multicast source,
Router R4 is the Designated Router of the side recipient client1, and router R3 is the Designated Router of the side recipient client2,
Router R2 is convergent point.
It referring to fig. 2, is one embodiment flow chart of multicast tree switching method of the present invention, the embodiment is from SDN controller
Multicast tree handoff procedure is described in 120 sides.
Step 201, the multicast packet total flow of all multicast groups of convergent point forwarding is obtained.
SDN controller 120 carries out information exchange, receiving router by the router of SDN network agreement and pim-sm domain
The role's notice message reported, for example, router can will identify self-role in the SDN network of operation OpenFlow agreement
Route-map carry the angle that 120 receiving router of SDN controller reports in the reserved field of OpenFlow protocol massages
Color notice message can determine the convergent point in pim-sm domain.For example, router R2 notices oneself to SDN controller 120 to converge
Accumulation.
In addition, SDN controller 120 also it is logical can to receive the multicast that each router reports by the information exchange with router
Accuse message, carry in the multicast announcement message multicast list information, the multicast data traffic of the multicast group of each router forwarding with
And multicast tree information.Above- mentioned information generate local multicast routing table to SDN controller 120 based on the received.Referring to table 1, for this
Invention multicast routing table example.
Table 1
The multicast packet total flow of the statistics convergent point of SDN controller 120, it is assumed that R2 is convergent point, as shown in Table 1, currently
The multicast packet total flow of R2 forwarding is 70Mb/s.
Step 202, total flow is determined beyond maximum stream flow threshold value, and selection needs to be switched to most in the multicast group of shared tree
The multicast group of short path tree.
The embodiment of the present invention is by presetting whether the multicast packet total flow of maximum stream flow threshold decision convergent point overloads.When
When the multicast packet total flow of convergent point is greater than preset maximum stream flow threshold value, illustrate the multicast traffic stream by convergent point transfer
Amount is excessive, part should be switched to shortest path tree forwarding by the multicast data traffic that shared tree forwards.Certainly, in order to avoid
Flowed fluctuation leads to frequent switching, can increase the time restriction to flow overload, i.e. flow overload maintains to execute after a certain period of time
Handover operation.
It, can be according to the sequence of multicast data traffic from big to small, altogether in the specific multicast group for determining and needing to switch
The multicast group for successively selecting to need to be switched to shortest path tree in the multicast group of tree is enjoyed, until the multicast packet total flow of convergent point
Less than maximum stream flow threshold value, i.e., the load condition of convergent point can restore normal after switching the multicast group that needs switch.As it can be seen that
When convergent point overload, the preferential multicast group for selecting multicast data traffic big is switched over, and can quickly reduce the load of convergent point,
Meanwhile keeping the multicast group number switched to shortest path tree minimum, newly-increased list item quantity is reduced, reduces switching to system resource
Consumption.
Step 203, it sends shortest path tree and handovers messages to each router, wherein shortest path tree handover request, which carries, needs
It is switched to the information of the multicast group of shortest path tree.
It is provided according to PIM-SM agreement, the multicast data traffic between different multicast trees switches by specifying as recipient side
Router is initiated.It is recipient side Designated Router which router the SDN controller 120 of the embodiment of the present invention, which is indifferent to,
It sends shortest path tree handover request to all-router, carries in the shortest path tree handover request and needs to be switched to most
The information of the multicast group of short path tree.When recipient side, Designated Router receives shortest path tree handover request, disappear to this
The multicast group for needing to be switched to shortest path tree carried in breath initiates the switching from shared tree to shortest path tree.
Certainly, the number for needing the multicast group switched can also be carried in above- mentioned information, so that recipient side specified circuit
It is verified by the multicast group that device quantitatively switches needs, improves the safety of multicast group switching to a certain extent.
It can be seen from the above description that the present invention directly perceives the multicast traffic stream of convergent point using SDN controller 120
Amount, to effectively control multicast data traffic in flow overload and switch from shared tree to shortest path tree, the control mode is more
Add accurate and effective.
But multicast data traffic can change, when the multicast data traffic on convergent point is reduced, in order to obtain more
The multicast data traffic forwarded by shortest path tree should be switched back into shared tree forwarding by good resource utilization.
Preset minimum flow threshold value of the embodiment of the present invention, when the multicast data traffic of convergent point forwarding is less than preset minimum
When flow threshold, illustrate that the load on convergent point is too small, the advantage of shared tree does not make full use of, and therefore, can further determine that
Need to be switched to the multicast group of shared tree from shortest path tree.
Specifically, the sequence according to multicast data traffic from small to large, successively selects in the multicast group of shortest path tree
The multicast group for shared tree is needed, until the multicast data traffic of convergent point is greater than minimum discharge threshold value.As it can be seen that when convergent point is negative
When carrying too small, the preferential multicast group for selecting multicast data traffic small is switched over, and can increase the multicast group number switched to shared tree
Mesh reduces system resources consumption to reduce list item quantity.
SDN controller 120 sends shared tree handover request to all-router, and carrying in the shared tree handover request needs
It is switched to the information of the multicast group of shared tree.Recipient side Designated Router receives shared tree handover request, in the message
The multicast group for needing to be switched to shared tree carried initiates the switching from shortest path tree to shared tree.
In Fig. 1, the IP address of multicast source 110 is 1.1.1.1, and router R2 is the convergent point of pim-sm domain.Multicast source 110
Respectively to multicast group address be 225.1.1.1 the first multicast group and multicast group address be 225.2.2.2 the second multicast group hair
Multicast packet is sent, multicast data traffic is respectively 40Mb/s, 30Mb/s.
As shown in Figure 3A, recipient client1 is the recipient of the multicast packet of the first multicast group, and router R4 is to receive
The Designated Router of the side person client1.The shared tree path that multicast source 110 arrives recipient client1 is multicast source 110 → routing
Device R1 → router R2 → router R3 → router R4 → recipient client1.Recipient client2 is the second multicast group
The recipient of multicast packet, router R3 is the Designated Router of the side recipient client2, from multicast source 110 to recipient
The shared tree path of client2 is 110 → router of multicast source R1 → router R2 → router R3 → recipient client2.
The maximum stream flow threshold value configured on SDN controller 120 is 65Mb/s, and minimum discharge threshold value is 15Mb/s.
SDN controller 120 obtains the multicast list of router R1~R5 in real time and corresponds to multicast data traffic, updates this
The multicast routing table on ground.It is assumed that the multicast routing table of current SDN controller 120 calculates router R2's as shown in aforementioned table 1
Multicast packet total flow 40Mb/s+30Mb/s=70Mb/s > 65Mb/s determines that router R2 overloads.At this point, inquiry table 1, finds
The maximum multicast data traffic 40Mb/s forwarded by shared tree, the multicast data traffic correspond to multicast group address and are
225.1.1.1 the first multicast group, calculate by the multicast data traffic of first multicast group be switched to the shortest path tree way of escape by
Multicast packet total flow on device R2 is 30Mb/s < 65Mb/s, and router R2 no longer overloads.
SDN controller 120 issues shortest path tree handover request to router R1~router R5, and is carried in the message
The multicast group address 225.1.1.1 and shortest path tree of one multicast group are identified.The router R4 of the side recipient client1 is received
To after multicast group address and the shortest path tree mark of the first multicast group, initiate for the first multicast group from shared tree to most short
The switching of path tree.
As shown in Figure 3B, after switching, the forward-path of the first multicast group is 110 → router of multicast source R1 → router R5
The shortest path tree path → router R4 → recipient client1, reduces the burden of router R2.
The updated multicast routing table of SDN controller 120 is as shown in table 2:
Table 2
It is assumed that the multicast data traffic for the second multicast group that multicast source 110 is sent drops to 10Mb/s, SDN controller 120
The multicast announcement message reported according to router R1-R5, the multicast data traffic of more new record, multicast routing table are updated to table 3:
Table 3
The multicast packet total flow for counting router R2 is 10Mb/s < 15Mb/s, and the load on router R2 is too small, inquiry
Table 3 finds the minimum multicast data traffic 40Mb/s forwarded by shortest path tree, and the multicast data traffic is with corresponding to multicast group
Location be 225.1.1.1 the first multicast group, calculate by the multicast data traffic of first multicast group be switched to the shared tree way of escape by
Multicast packet total flow on device R2 is 10Mb/s+40Mb/s=50Mb/s>15Mb/s, and 50Mb/s<65Mb/s, in router
In the loading range that R2 can bear, therefore, SDN controller 120 issues shared tree switching to router R1~router R5 and disappears
It ceases, the multicast group address 225.1.1.1 and shared tree switching mark of the first multicast group is carried in the message.
The router R4 of the side recipient client1 receives the multicast group address and shared tree switching mark of the first multicast group
After knowledge, the switching from shortest path tree to shared tree is initiated for the first multicast group.After switching, multicast group 225.1.1.1's turns
Hair path is that 110 → router of multicast source R1 → router R2 → router R3 → router R4 → recipient client1 is total to
Enjoy tree path.
The multicast routing table of SDN controller 120 is as shown in table 4 after updating:
Table 4
Corresponding with the embodiment of aforementioned multicast tree switching method, the present invention also provides the implementations of multicast tree switching device
Example.
The embodiment of multicast tree switching device 400 of the present invention can be applied on SDN controller.Installation practice can lead to
Software realization is crossed, can also be realized by way of hardware or software and hardware combining.Taking software implementation as an example, as a logic
Device in meaning is that corresponding computer program instructions are formed in the processor run memory by equipment where it.
It is a kind of hardware structure diagram of 400 place equipment of multicast tree switching device of the present invention as shown in Figure 4 A for hardware view,
Other than processor and nonvolatile memory shown in Fig. 4 A, equipment in embodiment where device 400 generally according to
The actual functional capability of the equipment can also include other hardware, repeat no more to this.
Fig. 4 B is please referred to, is the structural schematic diagram of the multicast tree switching device 400 in one embodiment of the invention.The multicast
Setting switching device 400 includes multicast control unit 401 and transmission unit 402, in which:
Multicast control unit 401, the multicast packet total flow of all multicast groups for obtaining convergent point forwarding；It determines total
Flow exceeds maximum stream flow threshold value, and selection needs to be switched to the multicast group of shortest path tree in the multicast group of shared tree；
Transmission unit 402 handovers messages to each router for sending shortest path tree, and wherein shortest path tree switching disappears
Breath carries the information for needing to be switched to the multicast group of shortest path tree.
Further,
Multicast control unit 401 is also used to determine total flow lower than minimum discharge threshold value, in the multicast group of shortest path tree
The middle multicast group for selecting to need to be switched to shared tree；
Transmission unit 402 is also used to send shared tree and handovers messages to each router, and wherein shared tree handover request carries
Need to be switched to the information of the multicast group of shared tree.
Further,
Multicast control unit 401, for the sequence according to multicast data traffic from small to large, in the multicast of shortest path tree
Successively selection needs to be switched to the multicast group of shared tree in group, until total flow is greater than minimum discharge threshold value.
Further,
Multicast control unit 401, for the sequence according to multicast data traffic from big to small, in the multicast group of shared tree
Successively selection needs to be switched to the multicast group of shortest path tree, until total flow is less than maximum stream flow threshold value.
Further, device 400 further include:
Receiving unit 403, the role's notice message sent for receiving each router, and receive what each router was sent
Multicast announcement message；
Multicast control unit 401 is also used to be determined as the router of convergent point according to the role's notice message received；With
According to the multicast announcement message received, the multicast data traffic of each multicast group forwarded as the router of convergent point is obtained；
Obtain and record the multicast list information of the multicast group of other routers forwarding, multicast data traffic and multicast tree information.
The function of each unit and the realization process of effect are specifically detailed in the above method and correspond to step in above-mentioned apparatus
Realization process, details are not described herein.
For device embodiment, since it corresponds essentially to embodiment of the method, so related place is referring to method reality
Apply the part explanation of example.The apparatus embodiments described above are merely exemplary, wherein described be used as separation unit
The unit of explanation may or may not be physically separated, and component shown as a unit can be or can also be with
It is not physical unit, it can it is in one place, or may be distributed over multiple network units.It can be according to actual
The purpose for needing to select some or all of the modules therein to realize the present invention program.Those of ordinary skill in the art are not paying
Out in the case where creative work, it can understand and implement.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (10)
1. a kind of multicast tree switching method, the router operation applied to the controller of software defined network SDN, in the SDN
Protocol independent multicast-sparse mode PIM-SM agreement, which is characterized in that the described method includes:
The multicast announcement message that convergent point is sent is received, each multicast of the convergent point forwarding is carried in the multicast announcement message
The multicast data traffic of group；
Based on the multicast data traffic of each multicast group, determine that the multicast packet of all multicast groups of the convergent point forwarding is total
Flow；
The total flow is determined beyond maximum stream flow threshold value, selection needs to be switched to shortest path tree in the multicast group of shared tree
Multicast group；
It sends shortest path tree and handovers messages to each router, cut wherein the shortest path tree handover request carries the needs
It is changed to the information of the multicast group of shortest path tree.
2. the method as described in claim 1, which is characterized in that the method also includes:
The total flow is determined lower than minimum discharge threshold value, selection needs to be switched to shared tree in the multicast group of shortest path tree
Multicast group；
It sends shared tree and handovers messages to each router, be switched to altogether wherein the shared tree handover request carries the needs
Enjoy the information of the multicast group of tree.
3. method according to claim 2, which is characterized in that the selection in the multicast group of shortest path tree needs to switch
For the multicast group of shared tree, comprising:
According to the sequence of multicast data traffic from small to large, successively selection needs to be switched to altogether in the multicast group of shortest path tree
The multicast group for enjoying tree, until the total flow is greater than the minimum discharge threshold value.
4. the method as described in claim 1, which is characterized in that the selection in the multicast group of shared tree needs to be switched to most
The multicast group of short path tree, comprising:
According to the sequence of multicast data traffic from big to small, successively selection needs to be switched to shortest path in the multicast group of shared tree
The multicast group of diameter tree, until the total flow is less than the maximum stream flow threshold value.
5. the method as described in claim 1, which is characterized in that the group of all multicast groups of the determination convergent point forwarding
Before multicast data total flow step, the method also includes:
Receive role's notice message that each router is sent；
The router of the convergent point is determined as according to the role's notice message received；
Receive the multicast announcement message that each router is sent；
According to the multicast announcement message that each router received is sent, the group of the multicast group of other routers forwarding is obtained and recorded
Broadcast list item information, multicast data traffic and multicast tree information.
6. a kind of multicast tree switching device, the router operation applied to the controller of software defined network SDN, in the SDN
Protocol independent multicast-sparse mode PIM-SM agreement, which is characterized in that described device includes:
Multicast control unit, for receiving the multicast announcement message of convergent point transmission, in the multicast announcement message described in carrying
The multicast data traffic of each multicast group of convergent point forwarding；Based on the multicast data traffic of each multicast group, the remittance is determined
The multicast packet total flow of all multicast groups of accumulation forwarding；The total flow is determined beyond maximum stream flow threshold value, in shared tree
Multicast group in selection need to be switched to the multicast group of shortest path tree；
Transmission unit handovers messages to each router for sending shortest path tree, wherein the shortest path tree handover request
Carry the information of the multicast group for needing to be switched to shortest path tree.
7. device as claimed in claim 6, it is characterised in that:
The multicast control unit is also used to determine the total flow lower than minimum discharge threshold value, in the multicast of shortest path tree
Selection needs to be switched to the multicast group of shared tree in group；
The transmission unit is also used to send shared tree and handovers messages to each router, wherein the shared tree handover request is taken
With the information of the multicast group for needing to be switched to shared tree.
8. device as claimed in claim 7, it is characterised in that:
The multicast control unit, for the sequence according to multicast data traffic from small to large, in the multicast group of shortest path tree
In successively selection need to be switched to the multicast group of shared tree, until the total flow is greater than the minimum discharge threshold value.
9. device as claimed in claim 6, it is characterised in that:
The multicast control unit, for the sequence according to multicast data traffic from big to small, in the multicast group of shared tree according to
The secondary multicast group for selecting to need to be switched to shortest path tree, until the total flow is less than the maximum stream flow threshold value.
10. device as claimed in claim 6, which is characterized in that described device further include:
Receiving unit, the role's notice message sent for receiving each router, and receive the multicast that each router is sent and lead to
Accuse message；
The multicast control unit is also used to be determined as the routing of the convergent point according to the role's notice message received
Device；Multicast announcement message for being sent according to each router received obtains and records the multicast group of other routers forwarding
Multicast list information, multicast data traffic and multicast tree information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610173884.XA CN105812267B (en) | 2016-03-24 | 2016-03-24 | A kind of multicast tree switching method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610173884.XA CN105812267B (en) | 2016-03-24 | 2016-03-24 | A kind of multicast tree switching method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105812267A CN105812267A (en) | 2016-07-27 |
| CN105812267B true CN105812267B (en) | 2019-02-19 |
Family
ID=56454885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610173884.XA Active CN105812267B (en) | 2016-03-24 | 2016-03-24 | A kind of multicast tree switching method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105812267B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111865788A (en) * | 2020-06-30 | 2020-10-30 | 新华三信息安全技术有限公司 | Path switching method, RP (radio protocol) equipment and storage medium |
| CN113810277B (en) * | 2021-10-29 | 2023-04-18 | 深圳市风云实业有限公司 | Multicast configuration and path calculation method and system based on SDN |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101296105A (en) * | 2008-06-11 | 2008-10-29 | 杭州华三通信技术有限公司 | Multicast fast switching method and system, three-layer network appliance |
| CN101789874A (en) * | 2009-12-15 | 2010-07-28 | 福建星网锐捷网络有限公司 | Multicast tree switching realization method, device and routing equipment in PIM-SM |
| CN103346969A (en) * | 2013-07-05 | 2013-10-09 | 中国科学院计算机网络信息中心 | Method for achieving dynamic multicast spanning tree path adjustment based on OpenFlow |
| CN103746923A (en) * | 2013-12-19 | 2014-04-23 | 杭州华三通信技术有限公司 | Multicast tree management and scheduling method and device |
| WO2014139564A1 (en) * | 2013-03-13 | 2014-09-18 | Nec Europe Ltd. | Method and system for controlling an underlying physical network by a software defined network |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9419895B2 (en) * | 2013-02-25 | 2016-08-16 | Brocade Communications Systems, Inc. | Techniques for customizing forwarding decisions via a hardware lookup result |
-
2016
- 2016-03-24 CN CN201610173884.XA patent/CN105812267B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101296105A (en) * | 2008-06-11 | 2008-10-29 | 杭州华三通信技术有限公司 | Multicast fast switching method and system, three-layer network appliance |
| CN101789874A (en) * | 2009-12-15 | 2010-07-28 | 福建星网锐捷网络有限公司 | Multicast tree switching realization method, device and routing equipment in PIM-SM |
| WO2014139564A1 (en) * | 2013-03-13 | 2014-09-18 | Nec Europe Ltd. | Method and system for controlling an underlying physical network by a software defined network |
| CN103346969A (en) * | 2013-07-05 | 2013-10-09 | 中国科学院计算机网络信息中心 | Method for achieving dynamic multicast spanning tree path adjustment based on OpenFlow |
| CN103746923A (en) * | 2013-12-19 | 2014-04-23 | 杭州华三通信技术有限公司 | Multicast tree management and scheduling method and device |
Non-Patent Citations (3)
| Title |
|---|
| MCDC:Multicast Routing leveraging SDN for Data Center Networks;Sapna Shukla, PriyaRanjan, Karan Singh;《2016 6th International Conference-Cloud System and Big Data Engineering (Confluence)》;20160115;第585-590页 |
| Protocol Independent Multicast - Sparse Mode (PIM-SM): Protocol Specification (Revised);B. Fenner, M. Handley, H. Holbrook, I. Kouvelas;《Network Working Group Request for Comments: 4601》;20060831;第9-27页 |
| 基于SDN的IP组播研究;谢永斌，张宸;《信息通信》;20151231;第202-203页 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105812267A (en) | 2016-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6781266B2 (en) | Virtual tunnel endpoint for load balancing considering congestion | |
| EP2587750B1 (en) | Addressing the large flow problem for equal cost multi-path in the datacenter | |
| US9699077B2 (en) | Method for determining a packet forwarding path, network device, and control device | |
| KR101473783B1 (en) | Method and apparatus for control of dynamic service chaining by using tunneling | |
| EP2883334B1 (en) | Techniques for flooding optimization for link state protocols in a network topology | |
| US11917262B2 (en) | Dynamic designated forwarder election per multicast stream for EVPN all-active homing | |
| US20170142010A1 (en) | Network operation rule | |
| CN103348630B (en) | For controlling the method selected in multicast network | |
| US11336577B2 (en) | Method and apparatus for implementing load sharing | |
| US10819583B2 (en) | Network device management method and apparatus | |
| WO2021136430A1 (en) | Path selection method and apparatus, computer device, and computer readable medium | |
| US20190238949A1 (en) | Multicast service providing method and software defined networking controller | |
| CN110351187A (en) | Data center network Road diameter switches the adaptive load-balancing method of granularity | |
| US11805047B2 (en) | Method and apparatus for controlling network traffic path | |
| CN105812267B (en) | A kind of multicast tree switching method and device | |
| WO2017201750A1 (en) | Method, device and system for processing multicast data | |
| Joshi et al. | Sfo: Subflow optimizer for mptcp in sdn | |
| EP2888842A1 (en) | Congestion notification in a network | |
| CN106921588B (en) | Flow control method, device and equipment | |
| Chakraborty et al. | A low-latency multipath routing without elephant flow detection for data centers | |
| CN109792405B (en) | Method and apparatus for shared buffer allocation in a transmission node | |
| McCauley et al. | Taking an axe to L2 spanning trees | |
| CN110336759B (en) | RDMA (remote direct memory Access) -based protocol message forwarding method and device | |
| WO2018182467A1 (en) | Techniques for congestion control in information-centric networks | |
| CN103117943B (en) | VPLS message flow method for limiting speed and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 310052 Binjiang District Changhe Road, Zhejiang, China, No. 466, No. Applicant after: Xinhua three Technology Co., Ltd. Address before: 310052 Binjiang District Changhe Road, Zhejiang, China, No. 466, No. Applicant before: Huasan Communication Technology Co., Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |