Unlock instant, AI-driven research and patent intelligence for your innovation.

Method, device and system for preventing packet loss of E-TRUNK (Enhanced-Trunk)

A packet loss and data packet technology, applied in the field of communication, can solve problems such as packet loss and business interruption, and achieve the effects of improving reliability, avoiding packet loss, and preventing packet loss

Inactive Publication Date: 2013-07-10
BEIJING HUAWEI DIGITAL TECH
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the link between the second forwarding device and the first forwarding device returns to normal, the traffic packets sent by the first forwarding device to the third forwarding device are switched to the second forwarding device for further processing. forwarding, and the second forwarding device still forwards the traffic packet received from the third forwarding device to the fourth forwarding device, but at this time the link between the fourth forwarding device and the first forwarding device has been Blocked by LACP, resulting in packet loss and service interruption

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method, device and system for preventing packet loss of E-TRUNK (Enhanced-Trunk)
  • Method, device and system for preventing packet loss of E-TRUNK (Enhanced-Trunk)
  • Method, device and system for preventing packet loss of E-TRUNK (Enhanced-Trunk)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] see figure 1 , Embodiment 1 of the present invention provides a system for preventing packet loss of an enhanced aggregation link E-TRUNK, the system comprising:

[0023] The first forwarding device 101, when the link between it and the second forwarding device 102 returns to normal, receives the data packet sent by the second forwarding device 102;

[0024] The second forwarding device 102, when the link between it and the first forwarding device 101 returns to normal, and the state of the interface connected to the first forwarding device 101 becomes UP, updates its own MAC entry; receiving the data packet sent by the third forwarding device 103; and sending the data packet to the first forwarding device 101 according to the updated MAC entry;

[0025] The third forwarding device 103 is configured to send a data packet to the second forwarding device 102 .

[0026] For example, if an E-trunk is deployed between the second forwarding device 102 and the fourth forward...

Embodiment 2

[0033] join figure 2 , Embodiment 2 of the present invention provides a method for preventing packet loss of an enhanced aggregation link E-TRUNK, the method comprising:

[0034] 201: When the link between the first forwarding device 101 and the second forwarding device 102 returns to normal, and the state of the interface connecting the second forwarding device 102 to the first forwarding device 101 changes to UP, trigger the The second forwarding device 102 updates the medium access control address MAC entry.

[0035] E.g, figure 1 If E-TRUNK is deployed between the second forwarding device 102 and the fourth forwarding device 104 and the first forwarding device 101, the Eth-Trunk (Ethernet Trunk of the second forwarding device 102 and the fourth forwarding device 104, for the Ethernet port The bundled Trunk) interfaces are respectively connected to the first forwarding device 101, wherein the Eth-Trunk interface is a physical Ethernet interface bundled in the Eth-trunk. ...

Embodiment 3

[0041] see image 3 , Embodiment 3 of the present invention further provides a device for preventing packet loss of an enhanced aggregation link E-TRUNK, the device may be, for example figure 1 In the second forwarding device 102, the second forwarding device 102 includes:

[0042] A triggering unit 301, configured to when the link between the first forwarding device 101 and the second forwarding device 102 returns to normal, and the state of the interface between the second forwarding device 102 and the first forwarding device becomes UP , triggering the second forwarding device 102 to update the media access control address MAC entry;

[0043] a receiving unit 302, configured to receive the data packet sent by the third forwarding device 103;

[0044] The forwarding unit 303 is configured to forward the data packet received by the receiving unit 302 to the first forwarding device 101 according to the updated MAC entry.

[0045] For example, if E-Trunk is deployed between ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The embodiment of the invention provides a method, device and system for preventing packet loss of two-layer transit failback flow of an E-TRUNK (Enhanced-Trunk). The method comprises the steps of: judging whether a port is in the E-Trunk when the port of a transit device is accessed into a virtual local area network (VLAN); if yes, setting a Smart VLAN mark for the port; and when the state of the port of the transit device is changed from Down to Up, judging whether the port has the Smart VLAN mark, if yes, clearing an MAC (Media Access Control) route on the transit device, and re-learning an MAC address by the transit device. According to the method for preventing packet loss of two-layer transit failback flow of the E-TRUNK, provided by the embodiment of the invention, the transit device is triggered for updating the MAC route when the port of the transit device is recovered to be an UP state through providing an MAC refreshing mechanism of the transit device in the current E-TRUNKtwo-layer transit network, thus the condition that packet loss of the flow grouping because the transit device transits the received flow grouping to an error device is avoided and the reliability ofservices in the E-TRUNK two-layer transit network is improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method, device and system for preventing packet loss of an enhanced aggregation link E-TRUNK. Background technique [0002] With the wide application of MAN and WAN, operators have higher and higher requirements on the bandwidth and reliability of backbone links using Ethernet technology. Using the link aggregation technology, the link bandwidth can be increased by bundling multiple physical interfaces into one logical interface without hardware upgrade. After the LACP (Link Aggregation Control Protocol, Link Aggregation Control Protocol) technology based on the IEEE802.3ad standard appeared, the aggregation link Trunk (Trunk is a bundle of ports or links is a kind of combination of multiple independent physical ports) Bundled together as a logical port) fault tolerance, and can provide M:N backup function to ensure high reliability of member links. LACP is a protocol that r...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L12/70H04L29/12
Inventor 程永锋王洪健兰雪梅
Owner BEIJING HUAWEI DIGITAL TECH