CN102208999A - Ethernet looped network link polymerization group protecting method and device - Google Patents

Abstract

The invention discloses an Ethernet looped network link polymerization group protecting method comprising the steps of: configuring a polymerization group adding mode to a physical port of a physical link in a link polymerization group, wherein the polymerization group adding mode comprises a relevance mode; when the physical link breaks down, detecting whether the physical port of the physical link is in the relevance mode, if not, not triggering looped network switching; and if so, carrying out looped network switching. The invention also provides a corresponding device. By using the Ethernet looped network link polymerization group protecting method and device provided by the invention, islet formation caused by breakdown of the physical links on two link polymerization ports on a looped network device can be prevented, and data loss of users can be reduced to the maximum extent.

Description

Protection method and device for link aggregation group of Ethernet ring network

technical field

The invention relates to the communication field, in particular to a method and device for protecting an Ethernet ring network link aggregation group.

Background technique

With the wide application of Ethernet in MAN, the performance and reliability of Ethernet have become the focus of more and more attention of telecom operators. In a switched network, the main means to improve network reliability is to deploy some redundant links. In this way, the backup link can be used when the primary link fails. In the case of using redundant link backup, the protection and recovery ability of the network becomes the key. At present, the industry generally pays attention to EAPS (Ethernet Automatic Protection Switching, Ethernet protection technology). At the same time, due to the increasing demand for bandwidth, the rate of a single port on the device may not necessarily meet the actual application requirements. At this time, LACP (Link Aggregation Control Protocol, Link Aggregation Control Protocol) has been widely used, and LACP can be used without upgrading the hardware. Under the premise of improving the higher transmission bandwidth for users.

An Ethernet ring network protection domain can include a master node and several transmission nodes, a control VLAN (Virtual Local Area Network, Virtual Local Area Network) for EAPS protocol message transmission, and a group of protected VLANs for user data forwarding. Business VLAN. Wherein, the two ports of the master node on the ring are respectively defined as a master port and a slave port, and the protected service VLAN is defined as a protected service VLAN. When the link on the ring is intact, the master node blocks the protection service VLAN forwarding function of the slave port, and there is no loop in the network, which prevents the "broadcast storm" caused by the network loop; The protection service VLAN forwarding function of the slave port is enabled, and user data can pass through the slave port of the master node, ensuring service connectivity. The Ethernet ring network protection control message is a communication and control message between nodes in the domain. It is propagated in the control VLAN. When a node blocks a port, the ring network control message can still pass without being affected. When the Ethernet ring protection is running normally, each node on the ring records the current status of the ring network as intact or faulty.

Link aggregation is also known as backbone technology or bundling technology. Its essence is to "combine" several physical links between two devices into a logical data path, called an aggregated link. The link is logically a whole, and the internal composition and details of the transmitted data are transparent to the upper layer service. It can double the bandwidth according to the number of ports in the aggregation group, create link transmission elasticity and realize link redundancy backup.

However, in practical applications, there is a relatively serious problem in the current link aggregation group protection method in the Ethernet ring network. During engineering construction, it often happens that a physical link in the aggregation link on both sides of a certain ring network device exists in a fiber bundle. In this case, if the fiber bundle is accidentally damaged, the ring network device on both sides All the member links in the aggregation port of the device will fail. If the above-mentioned ring network switching method is used, the device will block all ports on both sides of itself and notify the master node to perform ring network switching, so that the device will be in an island state. , cannot communicate with other devices on the ring network.

Contents of the invention

The main purpose of the present invention is to provide a method and device for protecting a link aggregation group of an Ethernet ring network, so as to prevent the formation of an isolated island when physical links of the aggregation ports on the two rings of the ring network equipment fail, thereby reducing user data to the greatest extent. lost.

The present invention provides a method for protecting an Ethernet ring network link aggregation group, including:

The mode of joining the aggregation group is configured for the physical port of the physical link in the link aggregation group, and the mode of adding the aggregation group includes an association mode;

When the physical link fails, it is detected whether the physical port of the physical link is in the association mode, if not, the ring network switching is not triggered; if yes, the ring network switching is performed.

Preferably, before performing the step of detecting whether the physical port of the physical link is in association mode when the physical link fails, the method also includes:

It is judged whether the physical link fails.

Preferably, when the physical link fails, detecting whether the physical port of the physical link is in association mode, and if so, performing ring network switching includes:

If the physical port of the physical link is in association mode, block the port of the link aggregation group where the physical link is located, and send a link failure report to the master node;

After receiving the link failure report, the master node opens the slave port, sends a ring network failure notification message to the transit node, and performs ring network switching.

Preferably, after receiving the link failure report, the master node opens the slave port, sends a ring network failure notification message to the transmission node, and performs ring network switching, further comprising:

Detecting whether the physical link returns to normal;

If it recovers, block the slave port, send a ring network intact notification message to the transit node, and perform ring network switching.

The present invention also proposes a protection device for an Ethernet ring network link aggregation group, including:

The configuration module is used to configure the mode of joining the aggregation group for the physical port of the physical link in the link aggregation group, and the mode of joining the aggregation group includes an association mode;

The first detection module is used to detect whether the physical port of the physical link is in association mode when the physical link fails, if not, then do not trigger ring network switching; if yes, perform ring network switching.

Preferably, the above-mentioned device also includes:

A judging module, configured to judge whether the physical link fails.

Preferably, the first switching module includes:

The sending unit is configured to block the port of the link aggregation group where the physical link is located, if the physical port of the physical link is in an association mode, and send a link failure report to the master node;

The switching unit is configured to open the slave port of the master node after receiving the link failure report, send a ring network failure notification message to the transmission node, and perform ring network switching.

Preferably, the protection device of the Ethernet ring network link aggregation group also includes:

The second detection module is used to detect whether the physical link returns to normal;

The switching module is used for such as recovering, blocking the slave port, sending the ring network intact notification message to the transmission node, and performing ring network switching.

The present invention provides a method and device for protecting a link aggregation group of an Ethernet ring network. By configuring the physical ports of the physical links in the link aggregation group to join the aggregation group mode, when a link fails, the link is judged The mode of joining the aggregation group can determine whether to trigger ring switching. It can prevent the formation of isolated islands when the physical links of the aggregation ports on the two rings of the ring network device fail, and minimize the loss of user data.

Description of drawings

Fig. 1 is a schematic flow chart of an embodiment of a method for protecting an Ethernet ring network link aggregation group according to the present invention;

FIG. 2 is a schematic flow diagram of detection in an embodiment of a method for protecting an Ethernet ring network link aggregation group according to the present invention;

FIG. 3 is a schematic flowchart of another embodiment of a method for protecting an Ethernet ring network link aggregation group according to the present invention;

FIG. 4 is a schematic flowchart of another embodiment of the method for protecting an Ethernet ring network link aggregation group according to the present invention;

5 is a schematic structural diagram of an embodiment of a protection device for an Ethernet ring network link aggregation group according to the present invention;

6 is a schematic structural diagram of a first detection module in an embodiment of a protection device for an Ethernet ring network link aggregation group according to the present invention;

7 is a schematic structural diagram of another embodiment of a protection device for an Ethernet ring network link aggregation group according to the present invention;

8 is a schematic structural diagram of another embodiment of a protection device for an Ethernet ring network link aggregation group according to the present invention;

The realization of the purpose of the present invention, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

With reference to Fig. 1, an embodiment of the protection method of the Ethernet ring network link aggregation group of the present invention is proposed, the method includes:

Step S101, configuring the mode of joining the aggregation group for the physical port of the physical link in the link aggregation group, the mode of joining the aggregation group includes an association mode;

The Ethernet ring network technology is configured on the nodes, and the aggregation link control protocol is adopted in the entire ring. Configure the mode of joining the aggregation group for the physical port of each physical link in the link aggregation group. The default is association mode, and it can also be configured as non-association mode as required. If it is configured as non-association mode, the physical port corresponding to the physical port If a link fails, it will not affect the state of the link aggregation group. For nodes with physical links in one fiber bundle in the link aggregation groups on both sides, it is necessary to configure the physical port of at least one physical link on one side as non-associated mode. When the fiber is damaged, it can pass Detect the mode in which the physical port of the physical link joins the aggregation group to determine whether to use one of the link aggregation groups at both ends of the node to continue communicating with other nodes.

Step S102, when the physical link fails, check whether the physical port of the physical link is in association mode, if not, do not trigger ring network switching; if yes, perform ring network switching.

When a physical link in the link aggregation group fails, it is necessary to detect the mode in which the physical port of the physical link joins the aggregation group, and judge whether the mode in which it joins the aggregation group is associated mode, if the detection result is non-associated mode , the state of the physical link will not affect the state of the link aggregation group it belongs to, that is, it will not trigger a ring network switchover, and the link aggregation group can continue to communicate with other nodes; if the detection result is association mode, then The state of the link aggregation group where the physical link is located is faulty, and a ring network switchover is required at this time.

The invention provides a method for protecting a link aggregation group of an Ethernet ring network. By configuring the mode of joining the aggregation group for the physical port of the physical link in the link aggregation group, when a link fails, it is judged that the link joins the aggregation group. The mode of the group can determine whether to trigger ring switching. It can prevent the formation of isolated islands when the physical links of the aggregation ports on the two rings of the ring network device fail, and minimize the loss of user data.

Referring to FIG. 2, in an embodiment of the protection method for the link aggregation group of the Ethernet ring network of the present invention, step S102 includes:

Step S1021, if the physical port of the physical link is in association mode, block the port of the link aggregation group where the physical link is located, and send a link failure report to the master node;

If the status of all links is normal, the link aggregation group connected to the main port of the main node communicates with the transit node. Therefore, when the main node detects that the physical link fails, it will block the main port; When the transit node detects that the physical link fails, it will block the port of the link aggregation group where it is located, and send a link failure report to the master node.

Step S1022, after receiving the link failure report, the master node opens the slave port, sends a ring network failure notification message to the transit node, and performs ring network switching.

After receiving the link failure report, the slave port of the master node is opened, and user data can continue to communicate with other nodes through the link aggregation group connected to the slave port. After the slave port is opened, a ring network failure notification message is sent to notify other transmission nodes to perform ring network switching. After the transmission node receives the ring network failure notification message, it performs ring network switching.

The mode of joining the aggregation group by detecting the physical port of the failed physical link, when it is in the association mode, blocks the port of the link aggregation group where it is located, triggers the ring network switchover, and uses the link connected to the slave port of the master node The aggregation group continues to communicate with other transmission nodes, so that user data will not be interrupted and business connectivity is guaranteed.

Referring to Fig. 3, another embodiment of the protection method of the link aggregation group of the Ethernet ring network of the present invention is proposed, the method also includes:

Step S103, judging whether the physical link fails;

After the port of the physical link in the link aggregation group is configured to join the aggregation group, the status of each physical link in the link aggregation group is detected, that is, it is judged whether it is faulty.

A switching threshold is preset. In this embodiment, the switching thresholds of all link aggregation groups on the ring network can be set to be 1, that is, as long as a physical link fails, the link where the physical link is located The state of the aggregation group is Failed. Therefore, when it is detected that the state of a physical link in the link aggregation group is faulty, it can be determined that the state of the link aggregation group is also faulty.

By detecting the state of the physical link in the link aggregation group, if there is a failure, it is judged whether the link aggregation group is a failure according to the preset threshold, so that the link failure detection is more convenient and accurate.

Referring to Fig. 4, propose another embodiment of the protection method of the link aggregation group of the Ethernet ring network of the present invention, the method also includes:

Step S104, detecting whether the physical link returns to normal;

When the master node opens the slave port and switches to the aggregated link group connected to the slave port to communicate with other transmission nodes, it needs to detect the status of the failed physical link to determine whether it returns to normal.

Step S105, if it is restored, block the slave port, and send a ring network intact notification message to the transit node, and the transit node performs ring network switching.

If the state of the physical link returns to normal, block the slave port of the master node, reopen the master port of the master node, and send a ring network intact notification message to the transit node, perform ring network switching, and switch to the restored link. The road aggregation group communicates.

After switching to the backup link for communication, by detecting whether the status of the failed link returns to normal, and switching to the recovered link aggregation group for communication, the data will not be interrupted, and the connectivity of the business is further guaranteed.

Referring to Fig. 5, an embodiment of the protection device of the Ethernet ring network link aggregation group of the present invention is proposed, the device includes:

Configuration module 10, is used for the physical port configuration of physical link in the link aggregation group joins the mode of aggregation group, and the mode of described joining aggregation group comprises association mode; With reference to Fig. 7, proposes a kind of Ethernet ring network link of the present invention Another embodiment of the protection device of the aggregation group, the device also includes:

The first detection module 20 is configured to detect whether the physical port of the physical link is in association mode when the physical link fails, if not, then do not trigger ring network switching; if yes, perform ring network switching.

The Ethernet ring network technology is configured on the nodes, and the aggregation link control protocol is adopted in the entire ring. The configuration module 10 configures the physical port of each physical link in the link aggregation group to join the mode of the aggregation group, which is an association mode by default, and can also be configured as a non-association mode as required. If it is configured as a non-association mode, the physical port If the corresponding physical link fails, it will not affect the state of the link aggregation group. For nodes with physical links in one fiber bundle in the link aggregation groups on both sides, it is necessary to configure the physical port of at least one physical link on one side as non-associated mode. When the fiber is damaged, it can pass Detect the mode in which the physical port of the physical link joins the aggregation group to determine whether to use one of the link aggregation groups at both ends of the node to continue communicating with other nodes.

When a physical link in the link aggregation group fails, the first detection module 20 needs to detect the mode in which the physical port of the physical link joins the aggregation group, and judges whether the mode in which it joins the aggregation group is an association mode, such as detecting If the result is non-associated mode, the state of the physical link will not affect the state of the link aggregation group it belongs to, and will not trigger ring network switchover, and the link aggregation group can continue to communicate with other nodes; if the detection result In association mode, the state of the link aggregation group where the physical link is located is faulty. At this time, a ring network switchover is required.

A protection device for an Ethernet ring network link aggregation group provided by the present invention, by configuring the mode of joining the aggregation group for the physical port of the physical link in the link aggregation group, when a link fails, it is judged that the link joins the aggregation group The mode of the group can determine whether to trigger ring switching. It can prevent the formation of isolated islands when the physical links of the aggregation ports on the two rings of the ring network device fail, and minimize the loss of user data.

Referring to FIG. 6, in an embodiment of the protection device of the Ethernet ring network link aggregation group of the present invention, the first detection module 20 includes:

The sending unit 21 is configured to block the port of the link aggregation group where the physical link is located as the physical port of the physical link is in an association mode, and send a link failure report to the master node;

The switching unit 22 is configured to open the slave port of the master node after receiving the link failure report, send a ring network failure notification message to the transit node, and perform ring network switching.

If the status of all links is normal, the link aggregation group connected to the main port of the main node communicates with the transit node. Therefore, when the main node detects that the physical link fails, it will block the main port; When the transit node detects that the physical link fails, it will block the port of the link aggregation group where it is located, and the sending unit 21 sends a link failure report to the master node.

After receiving the link failure report, the slave port of the master node is opened, and user data can continue to communicate with other nodes through the link aggregation group connected to the slave port. After the slave port is opened, a ring network failure notification message is sent to notify other transmission nodes to perform ring network switching. After the transmission node receives the ring network failure notification message, the switching unit 22 performs ring network switching.

The mode of joining the aggregation group by detecting the physical port of the failed physical link, when it is in the association mode, blocks the port of the link aggregation group where it is located, triggers the ring network switchover, and uses the link connected to the slave port of the master node The aggregation group continues to communicate with other transmission nodes, so that user data will not be interrupted and business connectivity is guaranteed.

Referring to Fig. 7, another embodiment of the protection device of the Ethernet ring network link aggregation group of the present invention is proposed, the device also includes:

A judging module 30, configured to judge whether the physical link fails.

After the port of the physical link in the link aggregation group is configured to join the aggregation group, the judging module 30 starts to detect the status of each physical link in the link aggregation group, that is, judges whether it is faulty.

A switching threshold is set in advance. In this embodiment, the switching threshold of all link aggregation groups on the ring network can be set to be 1, that is, as long as a physical link fails, the link aggregation group where the physical link is located The status of the group is Failed. Therefore, when it is detected that the state of a physical link in the link aggregation group is faulty, it can be determined that the state of the link aggregation group is also faulty.

By detecting the state of the physical link in the link aggregation group, if there is a failure, it is judged whether the link aggregation group is a failure according to the preset threshold, so that the link failure detection is more convenient and accurate.

Referring to Fig. 8, another embodiment of the protection device of the Ethernet ring network link aggregation group of the present invention is proposed, the device also includes:

The second detection module 40 is used to detect whether the physical link returns to normal;

The switching module 50 is configured to, for example, recover, block the slave port, send a ring network intact notification message to the transit node, and perform ring network switching.

After the master node opens the slave port and switches to the aggregated link group connected to the slave port to communicate with other transmission nodes, the second detection module 40 needs to detect the state of the failed physical link to determine whether it is back to normal.

If the state of this physical link returns to normal, then the slave port of the master node will be blocked, the master port of the master node will be reopened, and the ring network integrity notification message will be sent to the transmission node, and the switch module 50 will switch the ring network and switch to recovery Intact link aggregation groups communicate.

After switching to the backup link for communication, by detecting whether the status of the failed link returns to normal, and switching to the recovered link aggregation group for communication, the data will not be interrupted, and the connectivity of the business is further guaranteed.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related All technical fields are equally included in the scope of patent protection of the present invention.

Claims (8)

1. the guard method of an ethernet ring network link aggregation group is characterized in that, comprising:

For the configuration of the physical port of physical link in the link aggregation group adds the pattern of aggregation group, the pattern of described adding aggregation group comprises association mode;

When described physical link broke down, whether the physical port that detects this physical link was association mode, if not, did not then trigger looped network and switched; If then carry out looped network and switch.

2. the guard method of ethernet ring network link aggregation group as claimed in claim 1 is characterized in that, is carrying out describedly when physical link breaks down, and whether the physical port that detects this physical link is before the association mode, also comprises:

Judge whether described physical link breaks down.

3. the guard method of ethernet ring network link aggregation group as claimed in claim 2 is characterized in that, and is described when physical link breaks down, and whether the physical port that detects this physical link is association mode, if then carry out the looped network switching and comprise:

The physical port of physical link is an association mode as described, blocks the port of this physical link place link aggregation group, and the transmission link failure reports to host node;

After receiving described link failure report, host node slave port is opened, and sends ring network fault notice message and gives transmission node, and carry out the looped network switching.

4. as the guard method of each described ethernet ring network link aggregation group in the claim 1 to 3, it is characterized in that, carry out described receive the link failure report after; host node slave port is opened; send ring network fault notice message and give transmission node, and carry out also comprising after the looped network switching:

Detect described physical link and whether recover normal;

As recovering, block host node slave port, send the intact notice message of looped network to transmission node, and carry out the looped network switching.

5. the protective device of an ethernet ring network link aggregation group is characterized in that, comprising:

Configuration module is used to the physical port of physical link in the link aggregation group to dispose the pattern that adds aggregation group, and the pattern of described adding aggregation group comprises association mode;

First detection module is used for when described physical link breaks down, and whether the physical port that detects this physical link is association mode, if not, does not then trigger looped network and switches; If then carry out looped network and switch.

6. the protective device of ethernet ring network link aggregation group as claimed in claim 5 is characterized in that, this device also comprises:

Judge module is used to judge whether described physical link breaks down.

7. the protective device of ethernet ring network link aggregation group as claimed in claim 6 is characterized in that, described first handover module comprises:

Transmitting element is used for as described that the physical port of physical link is an association mode, blocks the port of this physical link place link aggregation group, and sends link failure and report to host node;

Switch unit, be used to receive the report of described link failure after, host node slave port is opened, and sends ring network fault notice message and gives transmission node, and carry out looped network and switch.

8. as the protective device of each described ethernet ring network link aggregation group in the claim 5 to 7, it is characterized in that this device also comprises:

Second detection module is used to detect described physical link and whether recovers normal;

Handover module is used for blocking from port as recovering, and sends the intact notice message of looped network to transmission node, and carries out the looped network switching.

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