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Topological convergence method and service provider edge device (PE)

A technology for service providers and edge devices, applied in the field of communications, which can solve problems such as network bandwidth consumption and system performance degradation, MAC address flooding, and re-learning, and achieve the effect of reducing flooding and re-learning.

Inactive Publication Date: 2012-03-14
ZTE CORP
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AI Technical Summary

Problems solved by technology

However, the MAC address withdrawal (MAC address withdrawal) mechanism in RFC4762 and draft-ietf-l2vpn-vpls-ldp-mac-opt does not distinguish between different MAC address spaces in the same VPLS instance. The MAC address space affected by structural changes is also implicated, causing unnecessary MAC address flooding and re-learning, which will lead to network bandwidth consumption and system performance degradation

Method used

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  • Topological convergence method and service provider edge device (PE)
  • Topological convergence method and service provider edge device (PE)
  • Topological convergence method and service provider edge device (PE)

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Embodiment Construction

[0018] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0019] figure 1 A flowchart showing a topology convergence method for VPLS according to an embodiment of the present invention, including:

[0020] Step S10, the PE receives a message to withdraw the MAC address (for example, the MAC address withdraw message of the pseudowire PW);

[0021] Step S20, the PE parses the message to obtain the MAC address space identifier (such as MAC Address Space ID);

[0022] Step S30, the PE deletes the corresponding MAC address entry in the MAC address space corresponding to the MAC address space identifier, that is, the PE only deletes the corresponding MAC address entry in the MAC address space specified by the MAC address space identifier among the multiple MAC ...

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Abstract

The invention discloses a topological convergence method and service provider edge device (PE) for virtual private local area network service (VPLS). The method comprises the steps as follows: the PE receives a message of canceling a medium access control (MAC) address; the PE analyses the message to obtain an MAC address space identifier; the PE deletes a corresponding MAC address item in the MAC address space corresponding to the MAC address space identifier; and when a received message belongs to the MAC address space identifier, the PE floods the message and relearns the MAC address item. The invention reduces the flooding and relearning of the MAC address.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a topology convergence method and service provider edge equipment (Provider Edge, PE) for VPLS (Virtual Private LAN Service, virtual private local area network service). Background technique [0002] VPLS provides users with a virtual local area network, which has the functions of flooding, MAC (Media Access Control, Media Access Control) address learning, forwarding and filtering Ethernet frames. When the VPLS instance is used to carry bidirectional (the two directions are respectively marked as direction 1 and direction 2) data flows, while the data flow in direction 1 is being forwarded, the control plane will use the source MAC address learning mechanism as the data in direction 2 Flow establishes a forwarding entry and forms a forwarding path, so that the data flow in direction 2 can get rid of the flooding state, and the subsequent Ethernet exchange can be performed direc...

Claims

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Application Information

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IPC IPC(8): H04L12/46H04L12/56H04L12/58H04L29/12
CPCH04L12/4641
Inventor 杨美琴金利忠王玉保
Owner ZTE CORP
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