WO2013131431A1

WO2013131431A1 - Method and apparatus for managing link aggregation group of network equipment

Info

Publication number: WO2013131431A1
Application number: PCT/CN2013/071781
Authority: WO
Inventors: 范汇华
Original assignee: 中兴通讯股份有限公司
Priority date: 2012-03-08
Filing date: 2013-02-22
Publication date: 2013-09-12
Also published as: CN102594696B; CN102594696A

Abstract

Disclosed is a method for managing the link aggregation group (LAG) of network equipment, the method comprising: determining whether the priority of the current standby LAG is higher than the priority of the main LAG according to the priority policy, if yes, setting the standby LAG as the current main LAG, and setting the main LAG as the current standby LAG; if not, continuing determining whether the priority of the current standby LAG is higher than the priority of the main LAG according to the priority policy. Further disclosed is an apparatus for managing the link aggregation group LAG of network equipment. The present invention enables network equipment, as customer equipment (CE), analyses the condition of the self-managed LAG, and selects the optimized LAG as the main LAG, thus ensuring the network performance.

Description

Method and device for managing network device aggregation group

The present invention relates to a link aggregation technology in Ethernet communication, and in particular, to a method and an apparatus for managing a Link Aggregation Group (LAG) of a network device. Background technique

Currently, in a communication network, link aggregation technology is usually used to solve the bandwidth bottleneck problem in a network. The so-called link aggregation is to bind two or more ports of the network device with the same attribute as a logical interface to increase. A method of bandwidth. By establishing a LAG between two network devices, the N ports in the network device are aggregated, so that the bandwidth between the network devices is increased by N times that of the original single port. Thus, the network device does not need hardware through link aggregation. Upgrades can increase the bandwidth of network devices. In addition, each link in the LAG is a backup of each other. As long as there is an available link in the LAG, the interworking between the network devices at both ends can be ensured, thereby ensuring network reliability. However, when all the links in the LAG fail, or the peer network device fails, the network device service is lost, which affects the reliability of the network and affects the customer experience.

To solve the above problem, the industry proposes a cross-device link aggregation (MC-LAG, Multi Chassis-LAG), as shown in FIG. 1, including: User Edge (CE), network equipment, and main supplier edge ( PE, Provider Edged) The network device and the standby PE network device; wherein the CE network device is a client network device, and the PE network device is a network device of the service provider. The CE network device establishes a primary LAG with the primary PE network device, and the CE network device and the standby PE network device establish a standby LAG. When the primary PE network device or the primary LAG fails, the CE network device enables the backup LAG to connect to the standby PE network device. , the service is transmitted to the standby PE network device. However, this method requires the operator to actually follow the network. The situation is that the primary/standby PE network device and the primary/secondary LAG are set. The CE network device cannot automatically evaluate the primary/backup LAG corresponding to the primary/secondary PE network device, and select the current optimal LAG as the primary LAG. Thus, there is a delay due to the need for manual intervention and affecting network performance.

It can be seen that when the existing network device is used as the CE network device, the LAG of the self-managed ACL cannot be automatically analyzed, and the optimal primary LAG is selected, thereby affecting network performance. Summary of the invention

In view of the above, an object of the present invention is to provide a method and an apparatus for managing a network device LAG, which can analyze a situation of a LAG managed by a network device as a CE network device, and select an optimal LAG as a primary LAG. To ensure network performance.

In order to achieve the above object, the technical solution of the present invention is achieved as follows:

The present invention provides a method for managing a network device LAG, the method comprising: determining, according to a priority policy, whether a priority of a current standby LAG is higher than a primary LAG, and if so, setting the standby LAG to a current primary LAG, The primary LAG is set to the current standby LAG; otherwise, it continues to determine whether the priority of the current standby LAG is higher than the primary LAG according to the priority policy.

In the foregoing solution, before determining, according to the priority policy, whether the priority of the current standby LAG is higher than the primary LAG, the method further includes: after the network device is turned on, establishing an active LAG, and establishing a standby LAG.

In the above solution, the establishing the primary LAG includes: determining whether the LAG of the received packet status is entered in the network device, and if yes, setting the LAG that has entered the received message state to an active state, and As the primary LAG; otherwise, continue to determine whether there is a LAG that has entered the status of the received message.

In the above solution, the establishing the standby LAG includes: determining whether a LAG in the network device except the activation state LAG enters the received message state, and if yes, the The LAG is used as the current standby LAG; otherwise, it continues to determine whether the LAG has entered the received message state in other LAGs other than the active state LAG in the network device.

In the above solution, the LAG that is currently in the state of the received packet is set to the active state, and the LAG is used as the primary LAG. The method further includes: after the network device is enabled, adding each port to the corresponding LAG one by one;

After the port in the network device receives the link aggregation control protocol data unit LACPDU packet, the port is set to the state of the received packet, and is removed from the original LAG; the port is added to the corresponding port. LAG, and set the status of the LAG to the received message.

In the foregoing solution, the priority policy includes:

Determine whether the primary/standby LAG is a full-duplex LAG. If not, the priority of the full-duplex LAG in the primary/standby LAG is higher than the priority of the non-full-duplex LAG;

Otherwise, it is determined whether the primary/backup LAGs satisfy the minimum number of active links. If not, in the primary/backup LAG, the priority of the LAG that satisfies the minimum activated link number is higher than the priority of the LAG that does not satisfy the minimum activated link number. Level

Otherwise, the system priority of the primary/secondary LAG peer network device is compared. If they are not equal, the LAG of the peer network device with a lower system priority is higher than the system of the peer network device. The priority of the LAG with a high priority;

Otherwise, the MAC addresses of the primary/secondary LAG peer network devices are compared. If they are not equal, the LAG of the peer network device has a lower MAC address than the peer network device. Priority of the LAG;

Otherwise, compare the number of ports in the primary/backup LAG that are in the state of received packets. If they are not equal, the LAG in the primary/backup LAG that has received more packets will have priority. Level, higher than the priority of the LAG with a small number of ports in the state of the received message; otherwise, the primary/secondary LAGs have the same priority.

The present invention also provides an apparatus for managing a network device LAG, the apparatus comprising: a policy module and a link aggregation control protocol LACP processing module;

a priority policy module, configured to determine, according to the priority policy, whether the priority of the current standby LAG is higher than the primary LAG, and if yes, notify the LACP processing module that the priority of the current standby LAG is higher than the primary LAG, otherwise, according to the priority The policy determines whether the priority of the current standby LAG is higher than the primary LAG;

The LACP processing module is configured to: when the priority of the current standby LAG sent by the priority policy module is higher than the notification of the primary LAG, set the standby LAG as the current primary LAG, and set the primary LAG to the current Alternate LAG.

In the above solution, the LACP processing module is further configured to establish a primary LAG and establish a standby LAG after the network device is enabled.

In the foregoing solution, the LACP processing module is specifically configured to determine whether a LAG that has received the received packet status is present in the network device, and if yes, set the current LAG that has entered the received message state to an active state. And as the primary LAG; otherwise, continue to determine whether there is a LAG that has entered the status of the received message.

In the above solution, the LACP processing module is specifically configured to determine whether a LAG enters a received message state in another LAG of the network device except the active state LAG, and if yes, the LAG is used as the current standby LAG. Otherwise, continue to judge whether the LAG in the other LAGs other than the active state LAG in the network device enters the received state.

In the above solution, the LACP processing module is specifically configured to add each port to the corresponding LAG one by one after the network device is enabled; when the port in the network device receives the link aggregation control protocol data unit LACPDU packet Then, the port is set to the state of the received message and is removed from the original LAG; the port is added to the corresponding LAG, and the status of the LAG is set to the received message.

In the above solution, the priority policy module is further configured to execute a priority policy; the priority policy includes: Determine whether the primary/backup LAG is a full-duplex LAG. If not, the priority of the full-duplex LAG in the primary/backup LAG is higher than the priority of the non-full-duplex LAG;

Otherwise, compare the number of ports in the primary/backup LAG that are in the state of received packets. If they are not equal, the LAG in the primary/backup LAG that has received more packets will have priority. Level, higher than the priority of the LAG with a small number of ports in the state of the received message; otherwise, the primary/secondary LAGs have the same priority. The priority comparison between the primary and secondary LAGs established in the current network device is performed. Once the backup LAG has a higher priority than the primary LAG, the current standby LAG is the optimal LAG, and the current standby LAG is used as the primary LAG. In this way, the impact of manually selecting the primary/backup LAG can be avoided. When the network device is used as the CE network device, the LAG of the self-managed LAG is analyzed, and the optimal LAG is automatically selected as the primary LAG. Thereby ensuring network performance. DRAWINGS

Figure 1 is a schematic diagram showing the structure of an MC-LAG;

2 is a schematic flowchart of a method for managing a network device LAG according to the present invention;

FIG. 3 is a schematic structural diagram of a device for managing a network device LAG according to the present invention. detailed description

The basic idea of the present invention is: determining whether the priority of the current standby LAG is higher than the primary LAG according to the priority policy, and if so, setting the standby LAG as the current primary LAG, and setting the primary LAG as the current standby LAG; Otherwise, it is determined whether the priority of the current standby LAG is higher than the primary LAG according to the priority policy.

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

A method for managing a network device LAG, as shown in FIG. 2, includes the following steps:

Step 101: Determine, according to the priority policy, whether the priority of the current standby LAG is higher than the priority of the primary LAG. If yes, go to step 102; otherwise, set the primary standby LAG to end the processing flow.

Here, the determining may be a periodic determination, and the period may be arbitrarily set according to requirements; the priority policy includes:

Otherwise, compare the number of ports in the primary/backup LAG that are in the state of received packets, if not If the number of the LAGs in the primary/secondary LAG is higher than the number of the LAGs that have received the received packets, the priority of the LAGs that are in the state of the received packets is higher than the priority of the LAGs that are in the state of the received packets. ; Otherwise, the primary/secondary LAGs have the same priority.

The number of the activated links is the total number of links included in the LAG; the system priority of the peer network device and the MAC address of the peer network device are all in accordance with the LACP requirements in the prior art. The parameter set for the network device in the link aggregation. The number of ports in the state of the received packet is the number of ports on which the recorded port is set to the status of the received packet.

The setting of the primary and backup LAGs is prior art, and is not mentioned here.

Step 102: Set the standby LAG to activate the LAG and act as the current primary LAG; set the primary LAG to the inactive LAG and act as the current alternate LAG.

Before the foregoing step 101, the primary LAG and the standby LAG need to be established, including the following steps: Step a: After the network device is turned on, determine whether there is any LAG that has entered the received message status in real time, and if so, perform the steps. b; Otherwise, repeat step a.

Here, the LAG that enters the received message state includes: when the network device is turned on, each port in the network device does not receive the network information, and each port is added to the corresponding LAG one by one; when the network device is in the network device After receiving the Link Aggregation Control Protocol Data Unit (LACPDU), any port is set to the status of the received packet and is removed from the original LAG. Add the corresponding LAG to the port of the LACPDU and set the status of the LAG to the received packet.

The adding the corresponding LAG includes: searching for a corresponding LAG according to the key value of the port and the system ID, and if yes, joining the LAG; otherwise, establishing a new LAG by using the key value of the port and the system ID as the LAG ID. ;

The method of adding the LAG and establishing a new LAG to the existing LACP protocol is not mentioned here; the method for generating and obtaining the Key value is the technology specified by the existing LACP, and is not described here; The LACPDUs are received and sent by the network device according to the Link Aggregation Control Protocol (LACP). The methods for generating and receiving are all in the prior art, and are not mentioned here.

Step b: Set the LAG that has entered the status of the received message to the active state and use it as the current primary LAG.

Step c: Real-time judge whether any LAG in the network device except the activation state LAG enters the received message state, and if yes, the LAG is used as the current standby LAG, and step 101 is performed; otherwise, the execution is repeated. Step c.

In addition, after the step c is completed, the network device also determines in real time whether any port managed by itself is in the state of the received packet, and the idle time of the packet is not received. If the timeout occurs, the state of the port is set to The status of the received packet is removed from the current LAG. The LAG with the same key value, the same system ID, and the status is added to the corresponding LAG, and then the process returns to step c.

The present invention also provides an apparatus for managing a network device LAG. As shown in FIG. 3, the present invention includes: a priority policy module 21 and an LACP processing module 22;

The priority policy module 21 is configured to determine, according to the priority policy, whether the priority of the current standby LAG is higher than the primary LAG, and if yes, notify the LACP processing module 22 that the priority of the current standby LAG is higher than the primary LAG, otherwise, according to the priority LAG The priority policy determines whether the priority of the current standby LAG is higher than the primary LAG;

The LACP processing module 22 is configured to: after receiving the notification that the priority of the current standby LAG sent by the priority policy module 21 is higher than that of the primary LAG, set the standby LAG as the current primary LAG, and set the primary LAG to The current alternate LAG.

The LACP processing module 22 is further configured to determine, in real time, whether there is any LAG that has entered the received message status, and if so, the current LAG that has entered the received message status. Set to activate LAG and act as the current primary LAG; otherwise, Continue to determine if there is any LAG that has entered the status of the received message.

The LACP processing module 22 is specifically configured to add each port to the corresponding LAG one by one after the network device is turned on. When any port receives the network information, the port is set to the status of the received packet. After the original LAG is removed, the port that receives the network information is added to the corresponding LAG, and the status of the LAG is set to the received message.

The LACP processing module 22 is specifically configured to search for a corresponding LAG according to the key value of the port and the system ID, and if yes, join the LAG; otherwise, establish a new LAG by using the key value of the port and the system ID as the LAG ID. .

The LACP processing module 22 is further configured to determine, in real time, whether any LAG in the LAG other than the activated LAG enters the received message state, and if yes, the LAG is used as the current standby LAG, and the priority policy module is notified. 21: Compare the priority of the standby LAG with the primary LAG. Otherwise, continue to determine whether any LAG in the LAG other than the activated LAG enters the received message state; correspondingly, the priority policy module 21 is further used. The notification sent by the LACP processing module 22 to compare the priorities of the standby LAG and the primary LAG is received.

The priority policy module 21 is further configured to execute a priority policy, where the priority policy includes:

Otherwise, compare the MAC addresses of the primary/secondary LAG peer network devices. If they are not equal, In the primary/backup LAG, the LAG of the peer network device with a smaller MAC address has a higher priority than the LAG of the peer network device with a larger MAC address;

The LACP processing module 22 is further configured to determine in real time whether any port that is in the state of the received packet has not received the idle time of the packet, and if the timeout occurs, the state of the port is set to be unreceived. Go to the status of the packet; remove the port from the current LAG, find the LAG with the same key value, the same system ID, and the status, add the corresponding LAG, and then determine the LAG in the network device except the active LAG. Whether any LAG appears in the message has entered the status of the received message.

The LACP processing module also has all the functions of processing LACP related packets specified in the network device in the prior art, and is not mentioned here.

The above device can be installed as a logic module in a network device such as an Ethernet switch.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Claims

Claim

A method for managing a link aggregation group LAG of a network device, the method comprising:

Determine whether the priority of the current standby LAG is higher than the primary LAG according to the priority policy, and if so, set the standby LAG to the current primary LAG, and set the primary LAG to the current standby LAG; otherwise, continue according to the priority policy Determine whether the priority of the current standby LAG is higher than the primary LAG.

The method according to claim 1, wherein the determining, according to the priority policy, whether the priority of the current standby LAG is higher than the primary LAG, the method further includes: after the network device is turned on, establishing the primary LAG , and create an alternate LAG.

The method according to claim 2, wherein the establishing the primary LAG comprises: determining whether the network device has a LAG that has received the received message status, and if yes, the current entry has been received. The LAG of the message status is set to the active state and is used as the primary LAG; otherwise, it continues to determine whether there is a LAG that has entered the status of the received message.

The method of claim 2, wherein the establishing the standby LAG comprises: determining whether a LAG in the network device other than the active state LAG has entered the received message state, if any, The LAG is used as the current standby LAG; otherwise, it is determined whether the LAG in the other LAGs other than the active state LAG in the network device enters the received message state.

The method according to claim 3, wherein, after the LAG that currently enters the received message state is set to an active state and is used as the primary LAG, the method further includes: when the network device is turned on , each port is added to the corresponding LAG one by one;

The method according to any one of claims 1 to 5, wherein the priority policy comprises:

A device for managing a network device LAG, the device comprising: a priority policy module and a link aggregation control protocol LACP processing module;

The LACP processing module is configured to: after receiving the notification that the priority of the current standby LAG sent by the priority policy module is higher than that of the primary LAG, setting the standby LAG as the current primary LAG, Set the primary LAG to the current alternate LAG.

8. Apparatus according to claim 7 wherein:

The LACP processing module is further configured to establish a primary LAG and establish a standby LAG after the network device is turned on.

9. Apparatus according to claim 8 wherein:

The LACP processing module is specifically configured to determine whether a LAG that has received the received packet status is present in the network device, and if yes, set the current LAG that has entered the received packet state to an active state, and Use LAG; otherwise, continue to determine if there is a LAG that has entered the status of the received message.

10. Apparatus according to claim 9 wherein:

The LACP processing module is specifically configured to determine whether a LAG enters a received message state in another LAG of the network device except the activation state LAG, and if yes, the LAG is used as the current standby LAG; otherwise, continue It is judged whether the LAG in the other LAG of the network device except the activation state LAG enters the received state.

11. Apparatus according to claim 10 wherein:

The LACP processing module is specifically configured to: after the network device is enabled, add each port to the corresponding LAG one by one; after the port in the network device receives the link aggregation control protocol data unit LACPDU packet, The port is set to the state of the received message and is removed from the original LAG; the port is added to the corresponding LAG, and the status of the LAG is set to the received message.

12. Apparatus according to claim 7 wherein:

The priority policy module is further configured to execute a priority policy;

The priority policy includes:

Determine whether the primary/backup LAG is a full-duplex LAG. If not, the priority of the full-duplex LAG in the primary/backup LAG is higher than the priority of the non-full-duplex LAG; Otherwise, it is determined whether the primary/backup LAGs satisfy the minimum number of active links. If not, in the primary/backup LAG, the priority of the LAG that satisfies the minimum activated link number is higher than the priority of the LAG that does not satisfy the minimum activated link number. level;