CN104092604A - Message transmission control method and device - Google Patents
Message transmission control method and device Download PDFInfo
- Publication number
- CN104092604A CN104092604A CN201410313175.8A CN201410313175A CN104092604A CN 104092604 A CN104092604 A CN 104092604A CN 201410313175 A CN201410313175 A CN 201410313175A CN 104092604 A CN104092604 A CN 104092604A
- Authority
- CN
- China
- Prior art keywords
- port
- message
- aggregation group
- switch
- forwarding
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 38
- 230000005540 biological transmission Effects 0.000 title claims abstract description 33
- 230000002776 aggregation Effects 0.000 claims abstract description 234
- 238000004220 aggregation Methods 0.000 claims abstract description 234
- 230000008859 change Effects 0.000 claims description 16
- 238000012423 maintenance Methods 0.000 claims description 13
- 238000012217 deletion Methods 0.000 claims description 12
- 230000037430 deletion Effects 0.000 claims description 12
- 238000012544 monitoring process Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 230000006870 function Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000013507 mapping Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000004590 computer program Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006855 networking Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Landscapes
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention provides a message transmission control method and device. The method comprises the following steps that a plurality of forwarding paths are generated for a message flow; different output ports, belonging to the same switch, on the forwarding paths are configured to be a port aggregation group of the switch; configuration information of the port aggregation group is issued to the switch, so that when the switch receives messages of the message flow, the messages are forwarded through the output ports in the port aggregation group. When the message transmission control method and device are applied, load sharing can be conducted on the message flow by the multiple paths through the port aggregation group, link congestion in a network can be avoided, and the utilization rate of the bandwidth of the network can be increased effectively.
Description
Technical Field
The present invention relates to the field of network communications, and in particular, to a method and an apparatus for controlling packet transmission.
Background
SDN (Software Defined Network) is a novel Network architecture, and in an optional implementation scheme, a control plane and a data plane of a Network device may be separated by an OpenFlow (OpenFlow) technology, so as to implement flexible control on Network traffic. In an SDN, a Controller (Controller) that implements a control plane function and several switches (switches) that implement a data plane function are typically included. When the switch receives the first message of a certain message flow, the first message is sent to the controller, the controller confirms the forwarding path of the message flow according to the forwarding information of the first message and the port information of each switch, and issues flow entries (FlowEntry) to the switches on the forwarding path, so that the switches forward the message flow from the source device to the destination device according to the received flow entries.
In the prior art, when a controller confirms a forwarding path of a packet flow, an optimal forwarding path is selected for the packet flow according to ports of each switch in an SDN and a connection relationship between the ports. However, since there may be multiple forwarding paths between the source device and the destination device, when the network traffic is large, if the packet is forwarded only according to the optimal forwarding path, the optimal forwarding path is easily congested, and it is difficult to fully utilize the network bandwidth resources.
Disclosure of Invention
The invention provides a message transmission control method and a message transmission control device, which are used for solving the problems that link congestion is easily caused and network bandwidth resources are difficult to be fully utilized when a single forwarding path is adopted to forward a message in the conventional SDN.
According to a first aspect of the embodiments of the present invention, there is provided a packet transmission control method, where the method is applied to a controller in a software defined network SDN, and the method includes:
generating a plurality of forwarding paths for the message flow;
configuring different output ports belonging to the same switch on the plurality of forwarding paths as a port aggregation group of the switch;
and issuing configuration information of the port aggregation group to the switch so that the switch forwards the message through an output port in the port aggregation group when receiving the message of the message flow.
According to a second aspect of the embodiments of the present invention, there is provided a packet transmission control method, where the method is applied to a switch in an SDN, and the method includes:
receiving configuration information of a port aggregation group issued by a controller, wherein the port aggregation group is configured for the switch according to different output ports of the switch on a plurality of forwarding paths after the controller generates the plurality of forwarding paths for a message stream;
and when receiving the message of the message flow, forwarding the message through an output port in the port aggregation group.
According to a third aspect of the embodiments of the present invention, there is provided a packet transmission control apparatus, which is applied to a controller in an SDN, and includes:
the generating unit is used for generating a plurality of forwarding paths for the message flow;
a configuration unit, configured to configure different egress ports belonging to the same switch on the multiple forwarding paths as a port aggregation group of the switch;
and the control unit is used for issuing configuration information of the port aggregation group to the switch so that the switch forwards the message through an output port in the port aggregation group when receiving the message of the message flow.
According to a fourth aspect of the embodiments of the present invention, there is provided a packet transmission control apparatus, which is applied to a switch in an SDN, the apparatus including:
a receiving unit, configured to receive configuration information of a port aggregation group issued by a controller, where the port aggregation group is a port aggregation group configured for a switch according to different output ports of the switch on multiple forwarding paths after the controller generates multiple forwarding paths for a packet stream;
and the forwarding unit is used for forwarding the message through an output port in the port aggregation group when receiving the message of the message flow.
It can be seen from the embodiments of the present invention that, a controller in an SDN generates a port aggregation group for a switch that forwards a message, and after the controller issues configuration information of the port aggregation group to the switch, the switch can simultaneously forward the message from a source address to a destination address through a plurality of egress ports in the port aggregation group, so that message traffic can be shared to a plurality of forwarding paths through a port aggregation group load, thereby avoiding link congestion in a network and effectively improving the utilization rate of a network bandwidth.
Drawings
FIG. 1 is a flow chart of one embodiment of a message transmission control method of the present invention;
FIG. 2 is a flow chart of another embodiment of a message transmission control method of the present invention;
figure 3 is a schematic diagram of an SDN network architecture to which embodiments of the present invention are applied;
FIG. 4 is a flow chart of another embodiment of a message transmission control method of the present invention;
fig. 5 is a hardware structure diagram of a device in which the message transmission control apparatus of the present invention is located;
fig. 6 is a block diagram of an embodiment of a message transmission control apparatus according to the present invention;
fig. 7 is a block diagram of another embodiment of a message transmission control apparatus according to the present invention.
Detailed Description
The embodiment of the invention can be applied to SDN, the control plane function in the SDN is realized by the controller, and the controller mainly sends a message forwarding strategy to the switch through the flow table item; the function of the data forwarding plane is realized by the switch, and the data forwarding plane is mainly used for forwarding the message according to the flow table items issued by the controller. In the embodiment of the invention, for a specific message flow transmitted from a source address to a destination address, a controller can generate a plurality of forwarding paths from the source address to the destination address, and different output ports belonging to the same switch on the plurality of forwarding paths are configured as a port aggregation group of the switch, so that the switch can forward the message flow through a plurality of output ports in the port aggregation group, thereby enabling the plurality of forwarding paths to share message transmission flow and fully utilizing network bandwidth resources.
At present, the OpenFlow protocol is the most popular in the SDN technology, and the OpenFlow protocol is taken as an example to be described below, and it should be noted that the present application does not exclude other protocols capable of implementing the SDN function. Specifically, when the present invention is implemented, the following adaptation modifications may be performed on the existing OpenFlow protocol:
the first modification: aiming at a port member in a port aggregation group on a controller, increasing the message type of a configuration message on the basis that the existing controller acquires the configuration message of the switch so as to allow the controller to acquire the information of the port member in the port aggregation group on the switch;
the second modification: aiming at the change of port members in a port aggregation group on a switch, adding a message type in a port change event of a controller notified by the existing switch, wherein the message type is used for notifying the controller of an event that the port members in the port aggregation group are added or withdrawn by the switch;
a third modification: and adding configuration information aiming at the change of port members in the port aggregation group maintained by the controller, wherein the configuration information is used for informing the switch of the controller to form a port aggregation group by a plurality of output ports, deleting the port aggregation group, adding or deleting the port members in the appointed port aggregation group and appointing the message forwarding ratio of the port members in the port aggregation group.
Referring to fig. 1, a flowchart of an embodiment of a message transmission control method according to the present invention is applied to a controller in an SDN, and includes the following steps:
step 101: multiple forwarding paths are generated for the message stream.
When a switch in the SDN receives a first message of a certain message flow, because the switch does not have a forwarding policy of the message flow yet, the first message of the message flow is sent to the controller, so as to request the forwarding policy of the message flow from the controller, where the forwarding policy may be generally carried in a flow table entry issued by the controller to the switch.
After the SDN is established, the controller learns a network topology structure of the SDN, obtains port information of each switch in the SDN, a connection relationship between ports, and the like, and thus, after the controller receives a header message of the message flow reported by the switch, obtains a source address and a destination address of the header message, and generates multiple forwarding paths from the source address to the destination address for the message flow according to the obtained SDN network topology, and the generation of the multiple forwarding paths may adopt various calculation methods in the prior art, such as a shortest path calculation method and the like, which is not described in detail in this embodiment.
Step 102: different output ports belonging to the same switch on a plurality of forwarding paths are configured as a port aggregation group of the switch.
In this embodiment, after generating multiple forwarding paths for a message stream, a controller may obtain an egress port of each switch on the multiple forwarding paths, and form an egress port on the multiple forwarding paths belonging to the same switch into a port aggregation group, so that the switch may forward the message through multiple egress ports in the port aggregation group; and for the switch which only comprises one output port on the plurality of forwarding paths, the switch forwards the message through the output port.
Step 103: and issuing configuration information of the port aggregation group to the switch so that the switch forwards the message through an output port in the port aggregation group when receiving the message.
In this embodiment, the configuration information of the port aggregation group at least includes port identifiers of a plurality of egress ports, and further may include a message forwarding ratio set for each egress port, and in a flow entry issued by the controller to the switch, an egress port of the flow entry is designated as the port aggregation group, so that the switch forwards a message flow through an egress port in the port aggregation group. When a message forwarding proportion is set for each egress port, the message forwarding proportion can be set for the egress port according to the effective bandwidth of the egress port, where the effective bandwidth refers to the sum of the bandwidth occupied by the egress port for forwarding the message and the idle bandwidth of the egress port.
In an implementation manner, the controller may generate a Group Table (Group Table) including a plurality of egress ports for the switch according to configuration information in a port aggregation Group of the switch, issue the Group Table to the switch through a control message, and point a message egress port of a flow Table item to the Group Table, so that the switch forwards a message through the plurality of egress ports in the Group Table. At this time, the controller may utilize an OFTP _ SET _ CONFIG configuration message in the OpenFlow protocol to send a group table to the switch, where a message type OFPC _ true _ SET is added for the configuration message, and the OFPC _ true _ SET is used to notify an egress port identifier in the controller group table, a packet forwarding ratio of the egress port, and corresponding message fields are as follows:
unit16_ t trunk _ id; an ID for representing a port aggregation group;
unit16_ t trunk _ mem; for representing egress ports within a port aggregation group;
unit16_ t trunk _ rate; the message forwarding proportion used for expressing the output port in the port aggregation group is as follows:
correspondingly, when a flow table entry is issued, an egress port is designated as the set of tables, and fields in the action type Struct of p _ action _ output of the flow table entry at this time are as follows:
uint16_ t type; for indicating the action type as an exit port pointing to the group table;
uint16_ len; for representing the length of the action;
Uint16_t trunk；
in another implementation, the controller may also integrate the configuration information into the flow entry to issue:
if an egress port and a packet forwarding ratio of each egress port are directly specified in the flow entry, the following action types may be newly added in the flow entry:
Struct ofp_action_outputSDN{
uint16_ t type; the SDNtrunk is used for indicating that the action type is newly added and comprises an exit port as a port list and a message forwarding proportion of each exit port;
uint16_ t len; for representing the length of the action;
uint16_ t portmem; for expressing the number of output ports;
struct ofp _ sdntrink portmap [0 ]; a first address for representing a port list;
}
wherein, the information of each exit port in the port list is represented by the following fields:
Struct opf_action_output_trunkport{
uint16_ t port; a port number used to represent an egress port;
uint16_ t ratio; the message forwarding proportion is used for expressing the output port;
}
it should be noted that the two implementation manners are extensions and supplements to the OpenFlow protocol, and in practical applications, the OpenFlow protocol may not be modified, but the configuration information is issued through upper layer software that can interact with the controller and the switch, that is, after the controller confirms the configuration of the port aggregation group, the configuration is notified to software such as NetConf (network configuration) and network management, and the configuration information of the port aggregation group is issued to the corresponding switch by the software.
Subsequently, when the switch receives the message, the switch may allocate the message to be forwarded to each egress port according to the message forwarding proportion of each egress port in the port aggregation group, and forward the allocated message. When the switch receives a message, the switch first calculates a hash value based on a message attribute, where the message attribute may be one or a combination of a source address, a protocol type, a Virtual Private Network (VPN), and the like, and the invention is not limited in this respect. And after the hash value is obtained, determining an exit port corresponding to the hash value through a hash mapping table, and forwarding the message through the determined exit port.
Assuming that three egress ports are respectively port1, port2 and port3 in the port aggregation group, and for the case that no packet forwarding ratio is set for an egress port in the port aggregation group, the packet forwarding ratios of the three egress ports are respectively 1:1:1 by default, and each egress port corresponds to one hash value, and a hash mapping table shown in table 1 below is correspondingly established:
TABLE 1
| Hash value | Output port |
| 0 | Port1 |
| 1 | Port2 |
| 2 | Port3 |
If the message forwarding ratios of the three output ports are 1:2:1 respectively, hash values corresponding to different numbers of different output ports are set according to the message forwarding ratios, that is, the forwarding ratios of the port1 and the port3 are 1, the hash values correspond to one hash value respectively, and the message forwarding ratio of the port2 is 2, the hash mapping table established in the following table 2 corresponds to two hash values:
TABLE 2
| Hash value | Output port |
| 0 | Port1 |
| 1 | Port2 |
| 2 | Port3 |
| 3 | Port2 |
Optionally, in the embodiment of the present invention, the port aggregation group may be maintained in any one of the following manners:
the first maintenance mode corresponds to the case of port deletion in the port aggregation group: when a link where a first port in a port aggregation group is located is disconnected, namely the first port is down, the switch can locally delete the first port in the port aggregation group, and at the moment, if the switch needs to forward a message stream, the switch can forward a received message according to a message forwarding proportion configured by the rest ports in the port aggregation group; meanwhile, the switch can report a port exit message to the controller, after the controller learns the down of the first port, the first port in the port aggregation group can be deleted, a first port aggregation group change message is issued to the switch, a subsequent controller can learn the network topology of the SDN again, the configuration information of the port aggregation group is updated according to the learning result, and the updated configuration information is issued to the switch.
The second maintenance mode corresponds to the situation that ports in a port aggregation group are increased: when a second port for forwarding the message is added to the switch, the port adding message reported by the switch is received, the second port is added to the port aggregation group according to the port adding message, and a second port aggregation group change message is issued to the switch, so that the switch adds the second port to the port aggregation group according to the second port aggregation group change message.
The third maintenance mode corresponds to the case of deleting the port aggregation group: when the controller monitors that only one output port is contained in the port aggregation group, the port aggregation group is deleted, and a port aggregation group deletion message is sent to the switch, so that the switch deletes the port aggregation group according to the port aggregation group deletion message, and the output port of the message is designated as the remaining output port. The controller may add a message type OFPC _ TRUNK _ DEL to the OFTP _ SET _ CONFIG configuration message, and carry the ID of the port aggregation group to be deleted in a field Unit16_ ttrank _ ID of the message type.
The fourth maintenance mode corresponds to the condition of adjusting the message forwarding proportion of the output port in the port aggregation group: when the message forwarding proportion is maintained, the controller can collect the flow information of each outlet port in the port aggregation group in real time, and determine the effective bandwidth of the outlet port in real time according to the flow information, so that when the effective bandwidth changes, the message forwarding proportion of the outlet port in the port aggregation group is adjusted according to the changed effective bandwidth, thereby better utilizing the network bandwidth and avoiding network congestion. For example, two output ports, namely, an output port a and an output port B, are arranged in the port aggregation group on the forwarding path corresponding to the packet traffic 1, and when the effective bandwidth of the output port a is 1G and the effective bandwidth of the output port B is 2G, the packet forwarding ratio of the output port a to the output port B may be set to be 1: 2; when the controller detects that the effective bandwidth of the output port B becomes 1G, the message forwarding ratio of the output port a to the output port B can be adjusted to 1:1, thereby avoiding traffic congestion at egress port B. When adjusting the message forwarding ratio, the controller may use the aforementioned message type OFPC _ TRUNK _ SET, and carry the port number of the output port whose message forwarding ratio needs to be adjusted in the Unit16_ t TRUNK _ mem field of the message type, and carry the adjusted message forwarding ratio in the Unit16_ t TRUNK _ rate field.
As can be seen from the above embodiments, after the controller sends configuration information of the port aggregation group to the switch, the switch may simultaneously forward a packet from a source address to a destination address through a plurality of egress ports in the port aggregation group, so that packet traffic may be shared to a plurality of paths through the port aggregation group, thereby avoiding link congestion in a network and effectively improving the utilization rate of a network bandwidth.
Referring to fig. 2, a flowchart of another embodiment of the message transmission control method according to the present invention is applied to a switch in an SDN, and includes the following steps:
step 201: and receiving configuration information of a port aggregation group sent by the controller, wherein the port aggregation group is configured for the switch according to different output ports of the switch on a plurality of forwarding paths after the controller generates the plurality of forwarding paths for the message flow.
In this embodiment, the configuration information of the port aggregation group at least includes port identifiers of a plurality of egress ports, and further may include a message forwarding ratio set for each egress port.
When receiving the configuration information of the port aggregation group, the switch may receive, respectively, a control message that is sent by the controller and includes the configuration information of the port aggregation group, and a flow entry used for forwarding the message, where a message egress port of the flow entry is designated as the port aggregation group; or, the switch may also only receive a flow entry for forwarding a packet sent by the controller, where the flow entry is added with configuration information of a port aggregation group, and a packet egress port of the flow entry is designated as the port aggregation group.
In addition, for the case that the controller issues the control message to the switch, the controller may also generate a Group Table (Group Table) including a plurality of egress ports for the switch according to configuration information in the port aggregation Group of the switch, issue the Group Table to the switch through the control message, and direct the packet egress port of the flow Table item to the Group Table, so as to implement that the switch forwards the packet through the plurality of egress ports in the Group Table.
Step 202: when receiving the message of the message flow, the message is forwarded through the output port in the port aggregation group.
When the switch receives the message, the switch can match a corresponding flow table entry for the message, and forward the message according to the designated output port of the message in the flow table entry, namely a plurality of output ports in the port aggregation group; further, when each egress port is configured with a message forwarding ratio, a message to be forwarded may be allocated to each egress port in the port aggregation group according to the message forwarding ratio before forwarding the message through the plurality of egress ports.
As can be seen from the above embodiments, after the controller sends configuration information of the port aggregation group to the switch, the switch may simultaneously forward a packet from a source address to a destination address through a plurality of egress ports in the port aggregation group, so that packet traffic may be shared to a plurality of paths through the port aggregation group, thereby avoiding link congestion in a network and effectively improving the utilization rate of a network bandwidth.
Referring to fig. 3, it is a schematic diagram of an SDN architecture applied in the embodiment of the present invention:
fig. 3 shows an SDN architecture including a controller 20, a switch 21 to a switch 29, and a source terminal 30 and a destination terminal 31. The controller 20 is directly connected to the switch 21, and the other switches 22 to 29 are connected to the controller 20 through a network topology. It should be noted that fig. 3 only shows one networking manner, and in an actual networking, the controller may also be directly connected to each switch in the network, which is not limited to this embodiment of the present invention.
In this embodiment, it is assumed that a packet is transmitted from the source terminal 30 to the destination terminal 31, each switch includes a plurality of ports for transmitting the packet, and the ports are divided into an ingress port and an egress port according to the transmission direction of the packet, for example, the switch 23 includes an ingress port 231 for transmitting the packet and an egress port 234.
Referring to fig. 4, a flowchart of another embodiment of the packet transmission control method according to the present invention is described in conjunction with the SDN architecture shown in fig. 3:
step 401: when the controller receives a first message of the message flow, a source address and a destination address of the first message are obtained.
In connection with fig. 3, it is assumed that the source terminal 30 is to transmit a message stream to the destination terminal 31, where the source address of the message stream is the address "1.1.1.1" of the source terminal 30 and the destination address is the address "2.2.2.2" of the destination terminal 31. The source terminal 30 transmits the header message of the message flow to the switch 22, and the switch 22 has no forwarding policy of the message, so that the header message of the message flow is uploaded to the controller 20 through the switch 21, and the controller obtains the source address "1.1.1.1" and the destination address "2.2.2.2" carried in the header message.
Step 402: the controller generates a plurality of forwarding paths from a source address to a destination address for the message flow according to the port connection relation of the switch in the SDN.
In this embodiment, it is assumed that the controller 20 generates four forwarding paths from the source terminal 30 and the destination terminal 31 for the packet flow according to the port connection relationship of the switch in the SDN, where the four forwarding paths are:
link 1: switch 22 (ingress port 233, egress port 222) > switch 21 (ingress port 211, egress port 214) > switch 25 (ingress port 255, egress port 252) > switch 27 (ingress port 273, egress port 274) > switch 26 (ingress port 262, egress port 263);
and a link 2: switch 22 (ingress port 233, egress port 222) > switch 21 (ingress port 211, egress port 213) > switch 25 (ingress port 251, egress port 252) > switch 27 (ingress port 273, egress port 274) > switch 26 (ingress port 262, egress port 263);
and a link 3: switch 22 (ingress port 233, egress port 221) — > switch 23 (ingress port 231, egress port 234) — > switch 25 (ingress port 254, egress port 252) — > switch 27 (ingress port 273, egress port 274) — > switch 26 (ingress port 262, egress port 263);
and a link 4: switch 22 (ingress port 233, egress port 221) — > switch 23 (ingress port 231, egress port 234) — > switch 25 (ingress port 254, egress port 253) — > switch 28 (ingress port 281, egress port 282) — > switch 26 (ingress port 261, egress port 263).
Step 403: the controller obtains an egress port of each switch on the plurality of forwarding paths.
Based on the four forwarding paths generated as described above, the controller obtains an egress port included in each switch on the four forwarding paths, and the obtaining result is shown in table 3 below:
TABLE 3
| Switch identification | Exit port identification |
| Switch 21 | Egress port 213, egress port 214 |
| Switch 22 | Output port 221, output port 222 |
| Switch 23 | Outlet port 234 |
| Switch 25 | Outlet port 252, outlet port 253 |
| Switch 26 | Outlet port 263 |
| Switch 27 | Output port 274 |
| Switch 28 | Exit port 282 |
Step 404: the controller generates a port aggregation group consisting of a plurality of egress ports for a switch comprising a plurality of egress ports on a plurality of forwarding paths.
Based on the foregoing table 3, the controller generates a port aggregation group 1 for the switch 22, where the port aggregation group 1 includes an egress port 221 and an egress port 222; generating a port aggregation group 2 for the switch 21, wherein the port aggregation group 2 comprises an egress port 213 and an egress port 214; port aggregation group 3 is generated for switch 25, with egress port 252 and egress port 253 included in port aggregation group 3. As shown in fig. 3, the above-mentioned three port aggregation groups are respectively represented by dashed ellipses.
Step 405: the controller sets a message forwarding ratio for each output port in the port aggregation group.
In this embodiment, when the controller sets a message forwarding ratio for an egress port in each port aggregation group, the controller may calculate the message forwarding ratio according to the effective bandwidth of each egress port, and taking port aggregation group 2 as an example, assuming that the effective bandwidth of the egress port 214 is 20G, and the effective bandwidth of the egress port 213 is 10G, therefore, the message forwarding ratio of the egress port 214 to the egress port 213 may be set to be 2:1, so that after the switch 21 receives the message, the egress port 214 and the egress port 213 perform load sharing forwarding on the message according to the ratio of 2: 1.
Step 406: and issuing a flow table item to the switch, wherein the flow table item is added with configuration information of a port aggregation group, a message output port of the flow table item is designated as the port aggregation group, and the configuration information comprises output ports in the port aggregation group and the message forwarding proportion of each output port.
After configuring the port aggregation group for the switch, the controller generates a flow entry for forwarding the message for the switch, and issues the corresponding flow entry to each switch. The message matching field in the flow table entry may be a source address and a destination address of the message, or other information capable of uniquely identifying the message; the message egress port field may add configuration information of the port aggregation group, including an egress port identifier in the port aggregation group and a message forwarding ratio corresponding to each egress port.
Step 407: when the exchanger receives the message, the corresponding flow table item is matched for the message.
When the switch receives the message, if the matching fields of the message in the flow table entry are the source address and the destination address, the switch can identify the source address and the destination address of the message and match the flow table entry of the message according to the source address and the destination address; or, if the matching field of the packet in the flow entry is other packet information, the switch may identify the packet information used for matching from the packet header information of the packet, and match the flow entry of the packet according to the packet information. The process of matching the upper message of the switch with the flow table entry is consistent with the existing matching process, and is not described herein again.
Step 408: and forwarding the message through an output port in a port aggregation group specified in the flow table entry, wherein each output port distributes the message to be forwarded according to the message forwarding proportion.
As can be seen from fig. 3, in the process of transmitting a message from a source terminal 30 to a destination terminal 31, taking a switch including a port aggregation group as an example, the message is first transmitted from the source terminal 30 to the switch 22, and the switch 22 forwards the message to the switch 23 and the switch 21 through an egress port 221 and an egress port 222 in the port aggregation group 1, respectively; similarly, switch 21 forwards the received packet to switch 25 through egress port 214 and egress port 213 in port aggregation group 2, and switch 25 forwards the received packet to switch 28 and switch 27 through egress port 253 and egress port 252 in port aggregation group 3, respectively. Through the transmission process, the message from the source address 1.1.1.1 to the destination address 2.2.2.2 can realize load sharing on a plurality of forwarding paths.
As can be seen from the above embodiments, after the controller sends configuration information of the port aggregation group to the switch, the switch may simultaneously forward a packet from a source address to a destination address through a plurality of egress ports in the port aggregation group, so that packet traffic may be shared to a plurality of paths through the port aggregation group, thereby avoiding link congestion in a network and effectively improving the utilization rate of a network bandwidth.
Corresponding to the embodiment of the message transmission control method, the disclosure also provides an embodiment of a message transmission control device.
The embodiment of the message transmission control device can be respectively applied to a controller and a switch in an SDN. The device embodiments may be implemented by software, or by hardware, or by a combination of hardware and software. The software implementation is taken as an example, and as a logical device, the device is formed by reading corresponding computer program instructions in the nonvolatile memory into the memory by the CPU of the device where the device is located and running the computer program instructions. From a hardware level, as shown in fig. 5, it is a hardware structure diagram of a device where the message transmission control apparatus of the present invention is located, and besides the CPU, the memory and the nonvolatile memory shown in fig. 5, the device where the apparatus is located in the embodiment may also include other hardware, such as a forwarding chip responsible for processing a message, in general; the device may also be a distributed device in terms of hardware structure, and may include multiple interface cards to facilitate expansion of message processing at the hardware level.
Referring to fig. 6, a block diagram of an embodiment of a message transmission control device according to the present invention is shown, where the embodiment can be applied to a controller in an SDN:
the device includes: a generating unit 610, a configuring unit 620 and a controlling unit 630.
The generating unit 610 is configured to generate multiple forwarding paths for a packet flow;
a configuration unit 620, configured to configure different egress ports belonging to the same switch on the multiple forwarding paths as a port aggregation group of the switch;
a control unit 630, configured to issue configuration information of the port aggregation group to the switch, so that when the switch receives the packet of the packet flow, the switch forwards the packet through an egress port in the port aggregation group.
In an alternative implementation:
the generating unit 610 may include (not shown in fig. 6): the address acquisition subunit is configured to acquire a source address and a destination address of the first packet when the first packet of the packet stream is received; and the link generation subunit is configured to generate multiple forwarding paths from the source address to the destination address for the packet flow according to a port connection relationship of a switch in the SDN.
In another alternative implementation:
the configuration unit 620 may include (not shown in fig. 6): an egress port obtaining subunit, configured to obtain an egress port of each switch on the multiple forwarding paths; and the aggregation group generation subunit is configured to generate a group table composed of the plurality of egress ports for the switch including the plurality of egress ports on the plurality of forwarding paths.
In another alternative implementation:
the control unit 630 may comprise at least one of the following sub-units (not shown in fig. 6): a first issuing subunit, configured to issue a control message including configuration information of the port aggregation group to the switch, and a flow table entry for forwarding the packet, where a packet egress port of the flow table entry is designated as the port aggregation group; and the second issuing subunit is configured to add the configuration information of the port aggregation group to a flow entry generated for the switch and used for forwarding the packet, and issue the flow entry to the switch, where a packet egress port of the flow entry is specified as the port aggregation group.
In another alternative implementation:
the device may further comprise (not shown in fig. 6): a setting unit, configured to set a message forwarding ratio according to an effective bandwidth of each egress port in the port aggregation group, so that the switch allocates a message to be forwarded to each egress port in the port aggregation group according to the message forwarding ratio; the configuration information of the port aggregation group issued by the control unit 630 may further include: and the message forwarding proportion is set for each output port.
In another alternative implementation:
the device may further comprise (not shown in fig. 6): the monitoring unit is used for monitoring the effective bandwidth of the output port; an adjusting unit, configured to adjust, when the effective bandwidth changes, a message forwarding ratio of an output port in the port aggregation group according to the changed effective bandwidth; and the control unit is also used for sending a control message containing the adjusted message forwarding proportion to the switch.
In another alternative implementation:
the device may further comprise (not shown in fig. 6): a first receiving unit, configured to receive a port exit message reported by the switch when a link where a first port in the port aggregation group is located is disconnected; a first maintenance unit, configured to delete the first port in the port aggregation group according to the port exit message; and the first issuing unit is used for issuing a first port aggregation group change message to the switch.
In another alternative implementation:
the device may further comprise (not shown in fig. 6): a second receiving unit, configured to receive a port join message reported by the switch when a second port for forwarding the packet is added to the switch; the second maintenance unit is used for adding the second port into the port aggregation group according to the port adding message; and the second issuing unit is used for issuing a second port aggregation group change message to the switch.
In another alternative implementation:
the device may further comprise (not shown in fig. 6): the third maintenance unit is used for deleting the port aggregation group when only one output port is detected to be contained in the port aggregation group; a third issuing unit, configured to issue a port aggregation group deletion message to the switch, so that the switch deletes the port aggregation group according to the port aggregation group deletion message, and designates an egress port of the message as the egress port.
Referring to fig. 7, a block diagram of another embodiment of a message transmission control device according to the present invention is shown, where the embodiment can be applied to a switch in an SDN:
the device includes: a receiving unit 710 and a forwarding unit 720.
The receiving unit 710 is configured to receive configuration information of a port aggregation group issued by a controller, where the port aggregation group is a port aggregation group configured for the switch according to different egress ports of the switch on multiple forwarding paths after the controller generates multiple forwarding paths for a packet stream;
a forwarding unit 720, configured to forward, when receiving the packet of the packet flow, the packet through an egress port in the port aggregation group.
In an alternative implementation:
the receiving unit 710 may include at least one of the following sub-units (not shown in fig. 7): a first receiving subunit, configured to receive, respectively, a control message that is sent by the controller and includes configuration information of the port aggregation group, and a flow entry used for forwarding the packet, where a packet output port of the flow entry is designated as the port aggregation group; a second receiving subunit, configured to receive a flow entry sent by the controller and used to forward the packet, where the flow entry is added with configuration information of the port aggregation group, and a packet output port of the flow entry is designated as the port aggregation group.
In another alternative implementation:
the configuration information of the port aggregation group received by the receiving unit 710 may further include: the controller sets a message forwarding proportion for each output port in the port aggregation group; the device may further comprise (not shown in fig. 7): and the distribution unit is used for distributing the message to be forwarded to each output port in the port aggregation group according to the message forwarding proportion.
In another alternative implementation:
the device may further comprise (not shown in fig. 7): a first reporting unit, configured to report a port exit message to the controller when a link where a first port in the port aggregation group is located is disconnected, so that the controller deletes the first port in the port aggregation group according to the port exit message; and the first maintenance unit is used for deleting the first port in the port aggregation group according to the first port aggregation group change message after receiving the first port aggregation group change message sent by the controller.
In another alternative implementation:
the device may further comprise (not shown in fig. 7): a second reporting unit, configured to report a port join message to the controller when a second port for forwarding the packet is added to the switch, so that the controller joins the second port to the port aggregation group according to the port join message; and the second maintenance unit is used for adding the second port into the port aggregation group according to the second port aggregation group change message after receiving the second port aggregation group change message sent by the controller.
In another alternative implementation:
the device may further comprise (not shown in fig. 7): a message receiving unit, configured to receive a port aggregation group deletion message issued by the controller, where the port aggregation group deletion message is a message generated when the controller monitors that only one output port is included in the port aggregation group; and the third maintenance unit is used for deleting the port aggregation group according to the port aggregation group deletion message and designating the output port of the message as the output port.
The implementation process of the functions and actions of each unit in the above device is specifically described in the implementation process of the corresponding step in the above method, and is not described herein again.
For the device embodiments, since they substantially correspond to the method embodiments, reference may be made to the partial description of the method embodiments for relevant points. The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the disclosed solution. One of ordinary skill in the art can understand and implement it without inventive effort.
As can be seen from the above embodiments, after the controller sends configuration information of the port aggregation group to the switch, the switch may simultaneously forward a packet from a source address to a destination address through a plurality of egress ports in the port aggregation group, so that packet traffic may be shared to a plurality of paths through the port aggregation group, thereby avoiding link congestion in a network and effectively improving the utilization rate of a network bandwidth.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (16)
1. A message transmission control method is applied to a controller in a Software Defined Network (SDN), and the method comprises the following steps:
generating a plurality of forwarding paths for the message flow;
configuring different output ports belonging to the same switch on the plurality of forwarding paths as a port aggregation group of the switch;
and issuing configuration information of the port aggregation group to the switch so that the switch forwards the message through an output port in the port aggregation group when receiving the message of the message flow.
2. The method of claim 1, wherein the issuing the configuration information of the port aggregation group to the switch comprises:
respectively issuing a control message containing configuration information of the port aggregation group and a flow table entry for forwarding the message to the switch, wherein a message output port of the flow table entry is designated as the port aggregation group;
or,
adding the configuration information of the port aggregation group into a flow table entry which is generated for the switch and used for forwarding the message, and issuing the flow table entry to the switch, wherein a message output port of the flow table entry is designated as the port aggregation group.
3. The method according to claim 1, wherein after configuring different egress ports belonging to a same switch on the plurality of forwarding paths as a port aggregation group of the switch, further comprising:
setting a message forwarding ratio according to the effective bandwidth of each output port in the port aggregation group, so that the switch allocates a message to be forwarded to each output port in the port aggregation group according to the message forwarding ratio;
the configuration information of the port aggregation group further includes: and the message forwarding proportion is set for each output port.
4. The method of claim 3, further comprising:
monitoring the effective bandwidth of the output port;
when the effective bandwidth changes, the message forwarding proportion of an output port in the port aggregation group is adjusted according to the changed effective bandwidth;
and sending a control message containing the adjusted message forwarding proportion to the switch.
5. The method according to any one of claims 1 to 4, further comprising maintaining the port aggregation group in any one of the following manners:
when a link where a first port in the port aggregation group is located is disconnected, receiving a port exit message reported by the switch, deleting the first port in the port aggregation group according to the port exit message, and sending a first port aggregation group change message to the switch;
when a second port for forwarding the message is added to the switch, receiving a port join message reported by the switch, adding the second port to the port aggregation group according to the port join message, and issuing a second port aggregation group change message to the switch;
when it is monitored that only one exit port is included in the port aggregation group, deleting the port aggregation group, and issuing a port aggregation group deletion message to the switch, so that the switch deletes the port aggregation group according to the port aggregation group deletion message, and designates the exit port of the message as the exit port.
6. A message transmission control method is applied to a switch in an SDN, and comprises the following steps:
receiving configuration information of a port aggregation group issued by a controller, wherein the port aggregation group is configured for the switch according to different output ports of the switch on a plurality of forwarding paths after the controller generates the plurality of forwarding paths for a message stream;
and when receiving the message of the message flow, forwarding the message through an output port in the port aggregation group.
7. The method according to claim 6, wherein the receiving the configuration information of the port aggregation group sent by the controller comprises:
respectively receiving a control message which is sent by the controller and contains configuration information of the port aggregation group, and a flow table entry used for forwarding the message, wherein a message output port of the flow table entry is designated as the port aggregation group;
or,
and receiving a flow table entry which is issued by the controller and used for forwarding the message, wherein the configuration information of the port aggregation group is added in the flow table entry, and a message output port of the flow table entry is designated as the port aggregation group.
8. The method of claim 6, wherein the configuration information of the port aggregation group further comprises: the controller sets a message forwarding proportion for each output port in the port aggregation group;
before forwarding the packet through an egress port in the port aggregation group, the method further includes:
and distributing the message to be forwarded to each output port in the port aggregation group according to the message forwarding proportion.
9. A packet transmission control apparatus, applied to a controller in an SDN, the apparatus comprising:
the generating unit is used for generating a plurality of forwarding paths for the message flow;
a configuration unit, configured to configure different egress ports belonging to the same switch on the multiple forwarding paths as a port aggregation group of the switch;
and the control unit is used for issuing configuration information of the port aggregation group to the switch so that the switch forwards the message through an output port in the port aggregation group when receiving the message of the message flow.
10. The device according to claim 9, characterized in that the control unit comprises at least one of the following sub-units:
a first issuing subunit, configured to issue a control message including configuration information of the port aggregation group to the switch, and a flow table entry for forwarding the packet, where a packet egress port of the flow table entry is designated as the port aggregation group;
and the second issuing subunit is configured to add the configuration information of the port aggregation group to a flow entry generated for the switch and used for forwarding the packet, and issue the flow entry to the switch, where a packet egress port of the flow entry is specified as the port aggregation group.
11. The apparatus of claim 9, further comprising:
a setting unit, configured to set a message forwarding ratio according to an effective bandwidth of each egress port in the port aggregation group, so that the switch allocates a message to be forwarded to each egress port in the port aggregation group according to the message forwarding ratio;
the configuration information of the port aggregation group issued by the control unit further includes: and the message forwarding proportion is set for each output port.
12. The apparatus of claim 11, further comprising:
the monitoring unit is used for monitoring the effective bandwidth of the output port;
an adjusting unit, configured to adjust, when the effective bandwidth changes, a message forwarding ratio of an output port in the port aggregation group according to the changed effective bandwidth;
and the control unit is also used for sending a control message containing the adjusted message forwarding proportion to the switch.
13. The apparatus of any one of claims 9 to 12, further comprising:
a first receiving unit, configured to receive a port exit message reported by the switch when a link where a first port in the port aggregation group is located is disconnected; a first maintenance unit, configured to delete the first port in the port aggregation group according to the port exit message; the first issuing unit is used for issuing a first port aggregation group change message to the switch;
and/or the presence of a gas in the gas,
a second receiving unit, configured to receive a port join message reported by the switch when a second port for forwarding the packet is added to the switch; the second maintenance unit is used for adding the second port into the port aggregation group according to the port adding message; the second issuing unit is used for issuing a second port aggregation group change message to the switch;
and/or the presence of a gas in the gas,
the third maintenance unit is used for deleting the port aggregation group when only one output port is detected to be contained in the port aggregation group; a third issuing unit, configured to issue a port aggregation group deletion message to the switch, so that the switch deletes the port aggregation group according to the port aggregation group deletion message, and designates an egress port of the message as the egress port.
14. A packet transmission control apparatus, applied to a switch in an SDN, the apparatus comprising:
a receiving unit, configured to receive configuration information of a port aggregation group issued by a controller, where the port aggregation group is a port aggregation group configured for a switch according to different output ports of the switch on multiple forwarding paths after the controller generates multiple forwarding paths for a packet stream;
and the forwarding unit is used for forwarding the message through an output port in the port aggregation group when receiving the message of the message flow.
15. The apparatus of claim 14, wherein the receiving unit comprises at least one of the following sub-units:
a first receiving subunit, configured to receive, respectively, a control message that is sent by the controller and includes configuration information of the port aggregation group, and a flow entry used for forwarding the packet, where a packet output port of the flow entry is designated as the port aggregation group;
a second receiving subunit, configured to receive a flow entry sent by the controller and used to forward the packet, where the flow entry is added with configuration information of the port aggregation group, and a packet output port of the flow entry is designated as the port aggregation group.
16. The apparatus of claim 14,
the configuration information of the port aggregation group received by the receiving unit further includes: the controller sets a message forwarding proportion for each output port in the port aggregation group;
the device further comprises:
and the distribution unit is used for distributing the message to be forwarded to each output port in the port aggregation group according to the message forwarding proportion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410313175.8A CN104092604B (en) | 2014-07-02 | 2014-07-02 | message transmission control method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410313175.8A CN104092604B (en) | 2014-07-02 | 2014-07-02 | message transmission control method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104092604A true CN104092604A (en) | 2014-10-08 |
| CN104092604B CN104092604B (en) | 2018-02-09 |
Family
ID=51640286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410313175.8A Active CN104092604B (en) | 2014-07-02 | 2014-07-02 | message transmission control method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104092604B (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104283785A (en) * | 2014-10-29 | 2015-01-14 | 杭州华三通信技术有限公司 | Method and device for processing flow table rapidly |
| CN104917678A (en) * | 2015-06-02 | 2015-09-16 | 上海斐讯数据通信技术有限公司 | SDN(software defined networking)-based link aggregation method |
| CN104980302A (en) * | 2015-05-12 | 2015-10-14 | 上海斐讯数据通信技术有限公司 | STP-based method for removing redundancy link under SDN framework |
| WO2016066144A1 (en) * | 2014-10-31 | 2016-05-06 | Hangzhou H3C Technologies Co., Ltd. | Forwarding path link table packet in software defined network |
| CN105656772A (en) * | 2016-03-09 | 2016-06-08 | 上海斐讯数据通信技术有限公司 | Interchanger port failover polymerization method and system |
| WO2016086693A1 (en) * | 2014-12-03 | 2016-06-09 | 华为技术有限公司 | Message transmission method, backbone switch and access switch |
| CN105681215A (en) * | 2015-12-29 | 2016-06-15 | 华为技术有限公司 | Forwarding table entry generation method and controller |
| CN106059822A (en) * | 2016-06-29 | 2016-10-26 | 杭州华三通信技术有限公司 | Configuration information issuing method and device |
| WO2016177180A1 (en) * | 2015-07-01 | 2016-11-10 | 中兴通讯股份有限公司 | Method and device for reporting openflow switch capability |
| CN106209670A (en) * | 2016-06-28 | 2016-12-07 | 杭州华三通信技术有限公司 | A kind of interface control method and device |
| WO2017181807A1 (en) * | 2016-04-18 | 2017-10-26 | 中兴通讯股份有限公司 | Sdn-based switch port information detection method, device, and terminal apparatus |
| CN107888518A (en) * | 2017-10-20 | 2018-04-06 | 深圳市楠菲微电子有限公司 | For the method and device to E-Packet |
| CN107948247A (en) * | 2017-11-01 | 2018-04-20 | 西安交通大学 | A kind of virtual cache passage buffer memory management method of software defined network |
| CN108809836A (en) * | 2018-05-31 | 2018-11-13 | 新华三技术有限公司 | Multicast data packet forwarding method and device |
| CN109361626A (en) * | 2018-11-09 | 2019-02-19 | 盛科网络（苏州）有限公司 | A kind of the port density extended method and SDN network of OpenFlow interchanger |
| CN109525501A (en) * | 2018-12-27 | 2019-03-26 | 新华三技术有限公司 | A kind of method and apparatus adjusting forward-path |
| CN109995667A (en) * | 2017-12-29 | 2019-07-09 | 北京华为数字技术有限公司 | The method and sending device of transmitting message |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101404619A (en) * | 2008-11-17 | 2009-04-08 | 杭州华三通信技术有限公司 | Method for implementing server load balancing and a three-layer switchboard |
| US20100329147A1 (en) * | 2009-06-30 | 2010-12-30 | Nam Scott K | Inter-node link aggregation system and method |
| CN102647355A (en) * | 2012-04-12 | 2012-08-22 | 华为技术有限公司 | LACP (Link Aggregation Control Protocol) consultation processing method, relay node and system |
| CN103200122A (en) * | 2013-03-05 | 2013-07-10 | 中兴通讯股份有限公司 | Processing method and system for group table in software definition network, and controller |
| US20130201822A1 (en) * | 2010-09-26 | 2013-08-08 | Hangzhou H3C Technologies Co., Ltd. | Computer network method and device using link aggregation |
| CN103780511A (en) * | 2012-10-19 | 2014-05-07 | 中兴通讯股份有限公司 | Flow path negotiation method and device in link aggregation group |
-
2014
- 2014-07-02 CN CN201410313175.8A patent/CN104092604B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101404619A (en) * | 2008-11-17 | 2009-04-08 | 杭州华三通信技术有限公司 | Method for implementing server load balancing and a three-layer switchboard |
| US20100329147A1 (en) * | 2009-06-30 | 2010-12-30 | Nam Scott K | Inter-node link aggregation system and method |
| US20130201822A1 (en) * | 2010-09-26 | 2013-08-08 | Hangzhou H3C Technologies Co., Ltd. | Computer network method and device using link aggregation |
| CN102647355A (en) * | 2012-04-12 | 2012-08-22 | 华为技术有限公司 | LACP (Link Aggregation Control Protocol) consultation processing method, relay node and system |
| CN103780511A (en) * | 2012-10-19 | 2014-05-07 | 中兴通讯股份有限公司 | Flow path negotiation method and device in link aggregation group |
| CN103200122A (en) * | 2013-03-05 | 2013-07-10 | 中兴通讯股份有限公司 | Processing method and system for group table in software definition network, and controller |
Cited By (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104283785A (en) * | 2014-10-29 | 2015-01-14 | 杭州华三通信技术有限公司 | Method and device for processing flow table rapidly |
| WO2016066144A1 (en) * | 2014-10-31 | 2016-05-06 | Hangzhou H3C Technologies Co., Ltd. | Forwarding path link table packet in software defined network |
| US10887132B2 (en) | 2014-10-31 | 2021-01-05 | Hewlett Packard Enterprise Development Lp | Forwarding path link table packet in software defined network |
| CN105721181B (en) * | 2014-12-03 | 2019-02-26 | 华为数字技术（苏州）有限公司 | Method, backbone switch and the access switch of message transmissions |
| WO2016086693A1 (en) * | 2014-12-03 | 2016-06-09 | 华为技术有限公司 | Message transmission method, backbone switch and access switch |
| CN105721181A (en) * | 2014-12-03 | 2016-06-29 | 华为数字技术（苏州）有限公司 | Method of message transmission, backbone switch and access switch |
| CN104980302A (en) * | 2015-05-12 | 2015-10-14 | 上海斐讯数据通信技术有限公司 | STP-based method for removing redundancy link under SDN framework |
| CN104980302B (en) * | 2015-05-12 | 2018-06-19 | 上海斐讯数据通信技术有限公司 | A kind of method for eliminating redundant link based on STP under SDN frames |
| CN104917678A (en) * | 2015-06-02 | 2015-09-16 | 上海斐讯数据通信技术有限公司 | SDN(software defined networking)-based link aggregation method |
| CN104917678B (en) * | 2015-06-02 | 2018-07-06 | 上海斐讯数据通信技术有限公司 | Link aggregation method based on SDN |
| RU2687215C1 (en) * | 2015-07-01 | 2019-05-07 | ЗетТиИ Корпорейшн | Method and device for transmitting information on openflow switch functions |
| US10374899B2 (en) | 2015-07-01 | 2019-08-06 | Zte Corporation | Method and device for reporting OpenFLow switch capability |
| WO2016177180A1 (en) * | 2015-07-01 | 2016-11-10 | 中兴通讯股份有限公司 | Method and device for reporting openflow switch capability |
| CN105681215B (en) * | 2015-12-29 | 2019-02-12 | 华为技术有限公司 | A kind of generation method and controller of forwarding-table item |
| CN105681215A (en) * | 2015-12-29 | 2016-06-15 | 华为技术有限公司 | Forwarding table entry generation method and controller |
| CN105656772B (en) * | 2016-03-09 | 2020-02-04 | 上海斐讯数据通信技术有限公司 | Method and system for aggregating failover of switch ports |
| CN105656772A (en) * | 2016-03-09 | 2016-06-08 | 上海斐讯数据通信技术有限公司 | Interchanger port failover polymerization method and system |
| CN107306193A (en) * | 2016-04-18 | 2017-10-31 | 中兴通讯股份有限公司 | Switch ports themselves information sensing method, device and terminal device based on SDN |
| WO2017181807A1 (en) * | 2016-04-18 | 2017-10-26 | 中兴通讯股份有限公司 | Sdn-based switch port information detection method, device, and terminal apparatus |
| CN107306193B (en) * | 2016-04-18 | 2020-11-27 | 中兴通讯股份有限公司 | Switch port information sensing method and device based on SDN network and terminal equipment |
| CN106209670A (en) * | 2016-06-28 | 2016-12-07 | 杭州华三通信技术有限公司 | A kind of interface control method and device |
| CN106059822A (en) * | 2016-06-29 | 2016-10-26 | 杭州华三通信技术有限公司 | Configuration information issuing method and device |
| CN106059822B (en) * | 2016-06-29 | 2019-07-09 | 新华三技术有限公司 | A kind of delivery method and device of configuration information |
| CN107888518A (en) * | 2017-10-20 | 2018-04-06 | 深圳市楠菲微电子有限公司 | For the method and device to E-Packet |
| CN107948247A (en) * | 2017-11-01 | 2018-04-20 | 西安交通大学 | A kind of virtual cache passage buffer memory management method of software defined network |
| CN107948247B (en) * | 2017-11-01 | 2020-04-10 | 西安交通大学 | Virtual cache channel cache management method of software defined network |
| CN109995667A (en) * | 2017-12-29 | 2019-07-09 | 北京华为数字技术有限公司 | The method and sending device of transmitting message |
| CN108809836A (en) * | 2018-05-31 | 2018-11-13 | 新华三技术有限公司 | Multicast data packet forwarding method and device |
| CN109361626A (en) * | 2018-11-09 | 2019-02-19 | 盛科网络（苏州）有限公司 | A kind of the port density extended method and SDN network of OpenFlow interchanger |
| CN109525501A (en) * | 2018-12-27 | 2019-03-26 | 新华三技术有限公司 | A kind of method and apparatus adjusting forward-path |
| CN109525501B (en) * | 2018-12-27 | 2022-05-24 | 新华三技术有限公司 | Method and device for adjusting forwarding path |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104092604B (en) | 2018-02-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104092604B (en) | message transmission control method and device | |
| US9379975B2 (en) | Communication control system, control server, forwarding node, communication control method, and communication control program | |
| US10397098B2 (en) | Establishing instance in software defined network | |
| US20160315845A1 (en) | SDN Controller, Data Center System, and Routing Connection Method | |
| EP3637700B1 (en) | Sdn network system, controller, and controlling method | |
| EP2892188B1 (en) | Method for determining packet forwarding path, network device and control device | |
| US9917766B2 (en) | Loop-free hybrid network | |
| CN104335537A (en) | System and method for layer-2 multicast multipathing | |
| KR20160056191A (en) | System and method for virtual network-based distributed multi-domain routing | |
| CN103346969A (en) | Method for achieving dynamic multicast spanning tree path adjustment based on OpenFlow | |
| US20130286844A1 (en) | Information system, control apparatus, communication method, and program | |
| CN102469019B (en) | Device and method for allocating aggregated link bandwidth in packet-switched network | |
| CN106330697A (en) | Hybrid network spanning tree establishing method, backup method and control system thereof | |
| US20150002616A1 (en) | Apparatus and method for processing multicast traffic in openflow environment | |
| CN104980368A (en) | Bandwidth guarantee method and apparatus in software defined network (SDN) | |
| US9832114B2 (en) | Packet forwarding system, control apparatus, packet forwarding method, and program | |
| US9614758B2 (en) | Communication system, integrated controller, packet forwarding method and program | |
| CN105099725A (en) | Multicast realizing method and apparatus for edge network | |
| CN106209633B (en) | Message forwarding method and device | |
| US10742539B2 (en) | Control apparatus, communication system, relay apparatus control method, and program | |
| CN111756659A (en) | Multi-master station EtherCAT network implementation method and network system adopting same | |
| US20160065427A1 (en) | Communication system, control apparatus, information collection method, and program | |
| CN105577559B (en) | A kind of method of routing, equipment and system | |
| JP2015192391A (en) | Network system, packet transmission device, packet transmission method, and information processing program | |
| CN105897576A (en) | Router design method for sharing routing control logic |
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 |
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. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |