A communication method and device

A table entry and equipment technology, applied in the field of communication, can solve the problems of time-consuming and affect the performance of PW protection switching, and achieve the effect of reducing pressure, solving large hardware development, and saving link switching time.

Active Publication Date: 2022-03-29
NEW H3C SECURITY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the active AC fails, delete the active AC entry in the forwarding chip first, and then associate the active PW entry with the Bypass PW entry and add it to the forwarding chip. When a link switch occurs, the BypassPW can only be delivered to the forwarding chip after it is activated. This will cause frequent operations on the hardware entries in the forwarding chip, which not only takes time but also affects the performance of PW protection switching

Method used

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  • A communication method and device
  • A communication method and device
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Embodiment Construction

[0055] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present application as recited in the appended claims.

[0056] The terminology used in this application is for the purpose of describing particular embodiments only, and is not intended to limit the application. As used in this application and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term...

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Abstract

The present application provides a communication method and device, which are applied to the main service provider edge PE equipment in the two-layer virtual private network L2VPN. Virtual link Bypass PW, and the main PE device pre-stores the main link entry and the Bypass PW entry, and the two-way association relationship between the main link entries, the Bypass PW entry and at least one main link The one-way association relationship between the road table items, the one-way association relationship between the active link table item and the Bypass PW table item is controlled by the path selection switch, and the method includes: the main PE device determines any active link In case of failure, switch the path selection switch to establish a bidirectional association relationship between the active link entry and the Bypass PW entry except for the faulty active link; use the established bidirectional association relationship to forward the received service data. In this way, fast link switching is realized, and there is no need to frequently operate the forwarding chip in the PE device.

Description

technical field [0001] The present application relates to the technical field of communication, and in particular to a communication method and device. Background technique [0002] With the continuous development of the network, the reliability of the networking is becoming more and more important. Generally, a virtual link (Pseudo Wire, PW) redundancy technology can be used to improve network reliability. In an existing Layer 2 Virtual Private Network (Layer2Virtual Private Network, L2VPN), it includes a first user edge (Custom Edge, CE) device, a second user edge device, a first service provider edge (Provider Edge, PE) device, The second service provider edge device and the third service provider edge device, wherein the second PE device and the third PE device are mutually active and standby devices, and a bypass virtual link (Bypass virtual link) is configured between the second PE device and the third PE device. PW), when the second PE device is the main PE device, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L45/28H04L45/74H04L12/46
CPCH04L45/28H04L45/74H04L12/4641
Inventor 邢家茂王蒙杨杰王慈淳张泽
Owner NEW H3C SECURITY TECH CO LTD
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