CN110661732B - Device and method for scheduling flow among working groups based on MAC (media access control) VLAN (virtual local area network) - Google Patents
Device and method for scheduling flow among working groups based on MAC (media access control) VLAN (virtual local area network) Download PDFInfo
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- H04L49/00—Packet switching elements
- H04L49/35—Switches specially adapted for specific applications
- H04L49/354—Switches specially adapted for specific applications for supporting virtual local area networks [VLAN]
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- H—ELECTRICITY
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- H04L47/00—Traffic control in data switching networks
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- H—ELECTRICITY
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Abstract
The invention discloses a device and a method for dispatching flow among working groups based on VLAN division by MAC, wherein the device comprises a switch, a Leaf switch, a Spine switch and an SDN controller, downlink ports of the switch are respectively connected with PCs of the working groups, an uplink port of the switch is connected with the downlink port of the Leaf switch, the uplink port of the Leaf switch is connected with the downlink port of the Spine switch, the uplink port of the Spine switch is accessed into an Internet network, and the SDN controller is connected with the Spine switch. The invention can appoint the flow scheduling relation, which PC in another working group is called by a PC in one working group can be appointed by the specific MAC address of the PC in the working group according to the actual use condition; the problem that the flow scheduling cannot be carried out after the PC connected with one HUB moves the position is solved.
Description
Technical Field
The invention relates to a device and a method for dispatching traffic among working groups based on MAC partition VLAN, belonging to the technical field of computer networks.
Background
The great advantage of dividing VLANs based on MAC addresses is that VLANs do not have to be reconfigured when the physical location of a user moves, i.e. from one switch to another. Vxlan (virtual Extensible lan) is a network virtualization technology, which is based on IP network and adopts a two-layer VPN technology in the form of "MAC in UDP" encapsulation. The VXLAN technology creates a large number of virtual extensible local area networks on the existing Network architecture by establishing VXLAN tunnels, and different virtual extensible local area networks are identified by using VNI (virtual extensible local area Network Identifier). VXLAN provides the same layer 2 network services as VLAN, but with greater scalability and flexibility than VLAN. SDN (Software Defined Network) is an implementation manner of Network virtualization, and a control plane and a data plane of a Network device are separated, so that flexible scheduling of data traffic is realized, and a Network becomes more intelligent as a transmission pipeline.
In the prior art, a network management controller first finds a full network topology, acquires monitored flow data in other ways, sends a flow optimization command according to the monitored data, and sends a border gateway protocol flow specification message to a controlled device, thereby achieving the purpose of flow optimization. In the prior art, a multi-level domain link model is constructed by using an SDN controller, traffic and link bandwidth utilization rate of each application are analyzed, whether a link with a link load exceeding a threshold exists is judged, and if the link load exceeds the threshold, an IP address of an internet service accessed by an internet user belonging to a province where a congested or faulty link belongs is adjusted.
However, in the scheme in the prior art, the flow table of the traffic scheduling is automatically updated according to the traffic condition in the existing network, and the traffic scheduling relationship cannot be specified.
Disclosure of Invention
Aiming at the defects of the method, the invention provides the device and the method for dispatching the flow among the working groups based on the MAC partition VLAN, the flow dispatching relationship can be manually appointed according to the MAC address of the actual PC, and the flow dispatching relationship is still kept unchanged after the PC is changed.
The technical scheme adopted for solving the technical problems is as follows:
on one hand, the inter-workgroup traffic scheduling device for dividing VLANs based on MAC provided in the embodiments of the present invention includes a switch, a Leaf switch, a Spine switch, and an SDN controller, where downstream ports of the switch are respectively connected to PCs of workgroups, an upstream port of the switch is connected to a downstream port of the Leaf switch, an upstream port of the Leaf switch is connected to a downstream port of the Spine switch, an upstream port of the Spine switch is connected to an Internet network, and the SDN controller is connected to the Spine switch.
In combination with a possible implementation manner as this embodiment, there are a plurality of Leaf switches, and all Leaf switches are connected to different downlink ports of the same Spine switch.
In combination as a possible implementation manner of this embodiment, the switches of different working groups are connected to different downstream ports of the same Leaf switch.
In combination with a possible implementation manner as this embodiment, the switches of different workgroups are connected to different downstream ports of different Leaf switches.
In combination with a possible implementation manner as this embodiment, a HUB is disposed between the switch and the PC of the workgroup.
On the other hand, the method for scheduling traffic between work groups based on the MAC-partitioned VLAN according to the embodiments of the present invention includes:
the flow scheduling of PCs among different working groups under the same Leaf switch node;
and (4) carrying out traffic scheduling on the PCs among different working groups under different Leaf switch nodes.
In combination with a possible implementation manner of this embodiment, the process of scheduling traffic of PCs between different workgroups in the same Leaf switch node includes the following steps:
the uplink and downlink ports of the Leaf switch are configured to be the same VLAN ID;
an uplink port and a downlink port of a switch to be scheduled are both configured to be VLAN ID same as the VLAN ID of the Leaf switch; configuring the MAC address of a downlink port connected with a switch to be scheduled and a PC to be scheduled into the MAC address of the PC to be scheduled;
the uplink port and the downlink port of the dispatched switch are both configured to be VLAN ID same as the Leaf switch; the MAC address of the downstream port of the dispatched switch connected with the dispatched P is configured as the MAC address of the dispatched PC.
In combination with a possible implementation manner of this embodiment, the process of scheduling traffic of PCs between different workgroups under different Leaf switch nodes includes the following steps:
the uplink and downlink ports of the Leaf switch are configured to be the same VLAN ID;
an uplink port and a downlink port of a switch to be scheduled are both configured to be VLAN ID same as that of a Leaf switch; configuring the MAC address of a downlink port connected with a switch to be scheduled and a PC to be scheduled into the MAC address of the PC to be scheduled;
the uplink port and the downlink port of the dispatched switch are both configured to be VLAN ID same as the Leaf switch; the MAC address of a downlink port of the dispatched PC is configured as the MAC address of the dispatched PC;
deploying VXLAN on the Leaf switch, and configuring the mapping of VLAN ID to VXLAN;
visiting between the same working group PCs across Leaf switches, wherein the Leaf switches are used as VTEPs of VXLAN networks, and VXLAN tunnels are established between the two Leaf switches;
visiting different work groups PC across Leaf, building VXLAN tunnel between Leaf exchanger and Spine exchanger, and deploying VXLAN three-layer gateway on Spine exchanger.
In combination with a possible implementation manner as this embodiment, the Leaf switch and the Spine switch are configured as an EVPN network.
The technical scheme of the embodiment of the invention has the following beneficial effects:
the invention can appoint the flow scheduling relation, a PC in one working group calls which PC of another working group, and the PC can be appointed by the concrete MAC address of the PC in the working group according to the actual use condition; the PC connected to the switch or HUB can move position arbitrarily within the workgroup and still perform MAC-based traffic scheduling as long as the MAC address is unchanged. The invention solves the problem that the flow scheduling can not be carried out after the PC connected with a HUB moves the position.
Description of the drawings:
fig. 1 is a schematic diagram illustrating an inter-working group traffic scheduling apparatus for partitioning VLANs based on MAC according to an exemplary embodiment;
FIG. 2 is a flow diagram illustrating a method for inter-workgroup traffic scheduling based on MAC partitioning of VLANs in accordance with an illustrative embodiment;
fig. 3 is a schematic diagram illustrating traffic scheduling of PCs between different workgroups under the same Leaf switch node in accordance with an exemplary embodiment;
fig. 4 is a schematic diagram of a switch configuration, according to an example embodiment;
fig. 5 is a schematic diagram illustrating traffic scheduling of PCs between different workgroups under different Leaf switch nodes in accordance with an exemplary embodiment.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
in order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings. The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and procedures are omitted so as to not unnecessarily limit the invention.
Fig. 1 is a schematic diagram illustrating an inter-working group traffic scheduling apparatus for partitioning VLANs based on MAC according to an exemplary embodiment. As shown in fig. 1, a device for scheduling traffic between work groups based on MAC-based VLAN according to an embodiment of the present invention includes a switch, a Leaf switch, a Spine switch, and an SDN controller, where downstream ports of the switch are respectively connected to PCs of the work groups, an upstream port of the switch is connected to a downstream port of the Leaf switch, an upstream port of the Leaf switch is connected to a downstream port of the Spine switch, an upstream port of the Spine switch is connected to an Internet network, and the SDN controller is connected to the Spine switch.
In combination as a possible implementation manner of this embodiment, the Leaf switches are multiple, and all the Leaf switches are connected to different downlink ports of the same Spine switch.
In combination as a possible implementation manner of this embodiment, the switches of different working groups are connected to different downstream ports of the same Leaf switch.
In combination as a possible implementation manner of this embodiment, the switches of different working groups are connected to different downstream ports of different Leaf switches.
In combination with a possible implementation manner as this embodiment, a HUB is disposed between the switch and the PC of the workgroup.
Fig. 2 is a flowchart illustrating an inter-working group traffic scheduling method for partitioning VLANs based on MAC, according to an example embodiment. As shown in fig. 2, a method for scheduling inter-working-group traffic based on MAC-based VLAN according to an embodiment of the present invention includes:
the flow scheduling of PCs among different working groups under the same Leaf switch node;
and (4) carrying out traffic scheduling on the PCs among different working groups under different Leaf switch nodes.
In combination with a possible implementation manner of this embodiment, the process of scheduling traffic of PCs between different workgroups in the same Leaf switch node includes the following steps:
the uplink and downlink ports of the Leaf switch are configured to be the same VLAN ID;
an uplink port and a downlink port of a switch to be scheduled are both configured to be VLAN ID same as that of a Leaf switch; configuring the MAC address of a downlink port connected with a switch to be scheduled and a PC to be scheduled into the MAC address of the PC to be scheduled;
the uplink port and the downlink port of the dispatched switch are both configured to be VLAN ID same as the Leaf switch; the MAC address of the downstream port of the dispatched switch connected with the dispatched P is configured as the MAC address of the dispatched PC.
In combination with this as a possible implementation manner of this embodiment, the process of scheduling traffic of PCs between different workgroups under different Leaf switch nodes includes the following steps:
the uplink and downlink ports of the Leaf switch are configured to be the same VLAN ID;
an uplink port and a downlink port of a switch to be scheduled are both configured to be VLAN ID same as that of a Leaf switch; the MAC address of a downlink port connected with a switch to be scheduled and a PC to be scheduled is configured as the MAC address of the PC to be scheduled;
the uplink port and the downlink port of the dispatched switch are both configured to be VLAN ID same as the Leaf switch; the MAC address of a downlink port connected with the scheduled P of the scheduled switch is configured as the MAC address of the scheduled PC;
deploying VXLAN on the Leaf switch, and configuring the mapping of VLAN ID to VXLAN;
visiting between the same working group PCs across Leaf switches, wherein the Leaf switches are used as VTEPs of VXLAN networks, and VXLAN tunnels are established between the two Leaf switches;
visiting different work groups PC across Leaf, building VXLAN tunnel between Leaf exchanger and Spine exchanger, and deploying VXLAN three-layer gateway on Spine exchanger.
In combination with a possible implementation manner as this embodiment, the Leaf switch and the Spine switch are configured as an EVPN network.
The invention mainly solves the problem that the flow scheduling can not be carried out after the PC connected with a HUB moves the position. The specific application examples are: the user of one internet cafe can call the resources of other internet cafes to surf the internet and play games. Based on the condition that the user calls resources in the internet bar, the internet flow accesses the internet from the called nodes of the resources of the internet bar, and if the PC of the internet bar moves, other internet bar flows can still be appointed to be called as long as the MAC address of the PC is unchanged.
The method comprises the steps of firstly discovering a full network topology by utilizing an SDN controller, and then configuring VLAN division based on MAC according to needs. The PC of an internet cafe is connected to the Leaf switch via the HUB. As shown in fig. 3.
Some internet cafes have more people and less people, the flow may need to be borrowed among the internet cafes, and the internet cafes with more people schedule the flow resources of the internet cafes with less people.
1. If the A internet bar needs to schedule the resources of the B internet bar, and the A and B internet bars are under the same Leaf node, that is, in the same operator node machine room as shown in FIG. 1. The configuration process is as follows (illustrated by the switch shown in fig. 4):
1.1 Leaf node switch ports 0-1 and 0-25 with IP 172.20.234.103 each add VLAN 100.
1.2, configuring VLAN 100 at port 0-1 of the switch with IP 172.20.234.102(SW-A), configuring VLAN based on MAC at port 0-5, wherein the MAC address is the MAC address of the PC to be dispatched, and the VLAN is consistent with the VLAN at the uplink port.
1.3, the switch configuration with 172.20.234.104(SW-B) IP is similar to 172.20.234.102, VLAN 100 is configured on ports 0-28, VLAN based on MAC is configured on ports 0-11, the MAC address is the MAC address of the scheduled PC, and the VLAN is consistent with the VLAN on the uplink port.
The configuration specific commands are as follows:
103(Leaf node):
vlan database
interface eth-0-1
switchport mode trunk
switchport trunk allowed vlan add 100
interface eth-0-25
switchport mode trunk
switchport trunk allowed vlan add 100
102(SW-A)：
vlan classifier rule 11mac 1c39.47cc.93ad vlan 100
vlan classifier rule 12mac 1c39.47cc.93aa vlan 100
vlan classifier group 8add rule 11
vlan classifier group 8add rule 12
vlan database
interface eth-0-1
switchport mode trunk
switchport trunk allowed vlan add 100
interface eth-0-5
switchport mode hybrid
switchport hybrid allowed vlan add 100untagged
vlan classifier activate 8based mac
104(SW-B)：
vlan database
vlan classifier rule 2mac 8c16.454a.69c8 vlan 100
vlan classifier rule 11mac 8c16.454a.69c6 vlan 100
vlan classifier group 31add rule 2
vlan classifier group 31add rule 11
interface eth-0-11
switchport mode hybrid
switchport hybrid allowed vlan add 100untagged
vlan classifier activate 31based mac
interface eth-0-28
switchport mode trunk
switchport trunk allowed vlan add 100
2. if the A internet bar needs to schedule the resources of the B internet bar, and the A and B internet bars are under different Leaf nodes, the configuration is as follows
2.1, SW-A and SW-B and Leaf are the same basic configuration as above.
And 2.2, deploying VXLAN on the Leaf node, and configuring and completing the mapping of the VLAN ID to the VXLAN.
And 2.3, accessing across the same subnet of Leaf, taking the Leaf node as a VTEP of the VXLAN network, and constructing a VXLAN tunnel between the two leaves, so that the mutual communication between the PCs in the same network segment can be realized. As shown in fig. 5.
And 2.4, accessing different subnets across Leaf, respectively building VXLAN tunnels between Leaf1 and Spine and between Leaf2 and Spine, and deploying a VXLAN three-layer gateway on Spine, so that mutual communication of PCs in different network segments can be realized. As shown in fig. 3.
2.5, between Leaf-Spine, EVPN can be used to reduce configuration difficulty.
The foregoing is only a preferred embodiment of the present invention, and it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements are also considered to be within the scope of the present invention.
Claims (6)
1. A flow scheduling device between workgroups for dividing VLAN based on MAC is characterized by comprising a switch, a Leaf switch, a Spine switch and an SDN controller, wherein downlink ports of the switch are respectively connected with PCs of workgroups, uplink ports of the switch are connected with the downlink ports of the Leaf switch, the uplink ports of the Leaf switch are connected with the downlink ports of the Spine switch, the uplink ports of the Spine switch are accessed to the Internet, and the SDN controller is connected with the Spine switch;
the Leaf switches are multiple, and all the Leaf switches are connected with different downlink ports of the same Spine switch; when the switches of different working groups are connected with different downlink ports of the same Leaf switch, the flow scheduling of the PCs between different working groups under the same Leaf switch node is carried out.
2. The device for inter-workgroup traffic scheduling based on MAC partition VLAN of claim 1 wherein a HUB is provided between the switch and the PC of the workgroup.
3. A flow scheduling device between workgroups for dividing VLAN based on MAC is characterized by comprising a switch, a Leaf switch, a Spine switch and an SDN controller, wherein downlink ports of the switch are respectively connected with PCs of workgroups, uplink ports of the switch are connected with the downlink ports of the Leaf switch, the uplink ports of the Leaf switch are connected with the downlink ports of the Spine switch, the uplink ports of the Spine switch are accessed to the Internet, and the SDN controller is connected with the Spine switch;
the Leaf switches are multiple, and all the Leaf switches are connected with different downlink ports of the same Spine switch; when the switches of different working groups are connected with different downlink ports of different Leaf switches, the flow scheduling of the PCs between different working groups under different Leaf switch nodes is carried out.
4. The device as claimed in claim 3, wherein a HUB is provided between the switch and the PCs of the workgroup.
5. A method for dispatching traffic among working groups based on MAC partition VLAN is characterized by comprising the following steps:
the flow scheduling of PCs among different working groups under the same Leaf switch node;
the flow scheduling of PCs between different working groups under different Leaf switch nodes;
the flow scheduling process of the PC between different working groups under the same Leaf switch node comprises the following steps:
the uplink and downlink ports of the Leaf switch are configured to be the same VLAN ID;
an uplink port and a downlink port of a switch to be scheduled are both configured to be VLAN ID same as that of a Leaf switch; configuring the MAC address of a downlink port connected with a switch to be scheduled and a PC to be scheduled into the MAC address of the PC to be scheduled;
the uplink port and the downlink port of the dispatched switch are both configured to be VLAN ID same as the Leaf switch; the MAC address of a downlink port connected with the scheduled P of the scheduled switch is configured as the MAC address of the scheduled PC;
the flow scheduling process of the PC between different working groups under different Leaf switch nodes comprises the following steps:
the uplink and downlink ports of the Leaf switch are configured to be the same VLAN ID;
an uplink port and a downlink port of a switch to be scheduled are both configured to be VLAN ID same as that of a Leaf switch; configuring the MAC address of a downlink port connected with a switch to be scheduled and a PC to be scheduled into the MAC address of the PC to be scheduled;
the uplink port and the downlink port of the dispatched switch are both configured to be VLAN ID same as the Leaf switch; the MAC address of a downlink port connected with the scheduled P of the scheduled switch is configured as the MAC address of the scheduled PC;
deploying VXLAN on the Leaf switch, and configuring the mapping of VLAN ID to VXLAN;
visiting between the same working group PCs across Leaf switches, wherein the Leaf switches are used as VTEPs of VXLAN networks, and VXLAN tunnels are established between the two Leaf switches;
visiting different work groups PC across Leaf, building VXLAN tunnel between Leaf exchanger and Spine exchanger, and deploying VXLAN three-layer gateway on Spine exchanger.
6. The method for dispatching the traffic among the working groups based on the MAC partition VLAN of claim 5, wherein a Leaf switch and a Spine switch are configured as an EVPN network.
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