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Fault treatment method and device

A fault and state technology, applied in the communication field, can solve the problems affecting communication reliability, MAC table pointing error, route advertisement error, etc., to achieve the effect of improving reliability, solving MAC table pointing error, and avoiding service interruption.

Inactive Publication Date: 2009-09-16
深圳市智通天下科技服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] When CE is dual-homed to PE in VPLS and L3VPN networks, there may be loops in the network, as well as problems such as MAC table pointing errors and routing advertisement errors, which seriously affect the reliability of communication.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] see figure 2 , the embodiment of the present invention provides a method for troubleshooting, the method includes:

[0031] 101: Determine the state of the VPLS VLAN corresponding to the sub-interface in the instance;

[0032] 102: If the state of the VPLS VLAN corresponding to the sub-interface is blocked in the instance, block the sub-interface.

[0033] Wherein, the instance may be an STP instance, an RSTP (Rapid Spanning Tree Protocol, Rapid Spanning Tree Protocol) instance or an MSTP (Multiple Spanning Tree Protocol, Multiple Spanning Tree Protocol) instance.

[0034] The beneficial effect of the embodiment of the present invention is: by judging the state of the VPLS VLAN corresponding to the sub-interface in the instance, and blocking the sub-interface where the VPLS VLAN is in the blocked state, the loop generated when CE is dual-homed to PE in the VPLS and L3VPN network is broken , and solve the problem of MAC table pointing error caused by the loop, and imp...

Embodiment 2

[0036] The embodiment of the present invention provides a fault handling method. The following describes in detail the fault handling method when the CE device is dual-homed to the PE device in the VPLS and L3VPN network in combination with specific examples.

[0037] Wherein, the CE device may be a network device with a layer-2 forwarding function such as a switch, and the PE device may be a network device with a layer-3 forwarding function such as a backbone network router. VPLS and L3VPN are deployed on PEs. Dual-homing is also called dual-connection, which means that a CE device is connected to two PE devices for the reliability of information transmission. When a PE device fails, another PE device can continue to serve the CE device. Among them, there can be one or more CE devices, that is, one CE device is dual-homed to two PE devices, or multiple CE devices are connected to each other and then dual-homed to two PE devices, such as figure 1 CE1, CE2, CE3, and CE4 are ...

Embodiment 3

[0050] see Figure 4 , the embodiment of the present invention provides a method for troubleshooting, including:

[0051] 301: Determine the status of the VLAN corresponding to the interface in the instance;

[0052] 302: If the state of the VLAN corresponding to the interface is blocked in the instance, the route is not advertised to the outside.

[0053] Wherein, the interface is a sub-interface or a main interface; the instance is an STP instance, an RSTP instance or an MSTP instance.

[0054] The beneficial effect of the embodiment of the present invention is: by judging the state of the VLAN corresponding to the own interface in the instance, when the state is blocked, the route is not announced to the outside, and the service interruption caused by the wrong route announcement is avoided.

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Abstract

The invention discloses a fault treatment method and a device. The method comprises the following steps: judging the state of VPLS VLAN corresponding to a sub-interface in an instance, if the state is blocked, blocking the sub-interface; judging the state of VLAN corresponding to an interface in the instance, if the state is blocked, not advertising routes outward. The device comprises a state judgment module, an interface blocking module and a routing module. The invention gets rid of the ring circuits generated in VPLS and L3VPN networks when CE double returns to PE, solves the problem of incorrect direction of MAC table caused by the ring circuits, avoids service interruption caused by incorrect advertising of routes and greatly improves the reliability of the communication systems.

Description

technical field [0001] The present invention relates to the communication field, in particular to a fault handling method and device. Background technique [0002] In order to improve the reliability of the communication system, the CE (Customer Edge, user edge) equipment is often used in the current metropolitan area network to dual-homing the PE (Provider Edge, service provider edge) equipment. However, in L3VPN (Lay3 Virtual Private Network, three-layer virtual private network) and VPLS (Virtual Private LAN Service, virtual private local area network service) networks, there are various defects when CE equipment is dual-homed to PE equipment. [0003] see figure 1 In the example shown in which CE is dual-homed to PE, CE devices (including CE1, CE2, CE3, and CE4) form a layer-2 loop and are dual-homed to PE1 and PE2. A VPLS peer (neighborhood) relationship is established between PE devices (including PE1, PE2, PE3, and PE4). Set host 1 to access the network through PE3,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/46H04L12/56H04L29/06H04L45/28
Inventor 冯建权
Owner 深圳市智通天下科技服务有限公司
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