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Service flow switching method and apparatus

A technology for business traffic and traffic switching, which is applied in the network field to ensure normal transmission and improve reliability.

Inactive Publication Date: 2008-04-09
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, mechanisms such as BFD / MPLSOAM / Ethernet OAM can only detect whether the link is faulty, but do not perceive the quality of the link. As long as the other party’s packets can be received within a fixed period, even if the packet loss rate is high, It will not think that the link is faulty, and there will be no switching of business traffic

Method used

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  • Service flow switching method and apparatus
  • Service flow switching method and apparatus

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Referring to Figure 2, in the IP network, there are two routes from device B to device F, where the bandwidth of the B-C-E link is 300M, and the bandwidth of the B-D-E link is 200M. When the routing protocol generates a route, select the link with a bandwidth of 300M as the active link, and the link with the bandwidth of 200M as the backup link.

[0031] Then, referring to Figure 3, the methods for implementing service traffic switching include:

[0032] S301, at the device B, through the IP packet Internet exploration (PING, Packet Internet Groper), that is, using the Internet Control Message Protocol (ICMP, Internet Control Message Protocol) response (ICMP Echo) and its response to test a certain network in the IP network Whether the device is reachable, to detect the quality of the main and standby links, regularly collect the delay, jitter, packet loss rate and other related parameters of the main and standby links, and generate the database of the main and standby ...

Embodiment 2

[0038] Referring to Figure 4, in the MPLS network, there are two LSP tunnels from device B to device F. The bandwidth of the B-C-E link is 300M, the bandwidth of the B-D-E link is 200M, and the LSP tunnel with a bandwidth of 300M is the main link. The LSP tunnel with the highest bandwidth is the backup link.

[0039] Then, referring to Figure 5, the methods for implementing service traffic switching include:

[0040] S501. At device B, detect the quality of the primary and secondary LSP tunnels through LSP PING, regularly collect relevant parameters such as time delay, jitter, and packet loss rate of the primary and secondary LSP tunnels, and generate a database of the primary and secondary LSP tunnels.

[0041]S502. Periodically check parameters such as time delay, jitter, and packet loss rate of the active and standby LSP tunnels in the database, and if it is found that the time delay, jitter, and packet loss rate of the active LSP tunnel are relatively high, exceeding the p...

Embodiment 3

[0044] Referring to Figure 6, in the MAC IN MAC network, there are two MAC IN MAC tunnels from device B to device F, where the B-C-E link is 300M, the B-D-E link is 200M, and the MAC IN MAC tunnel with 300M bandwidth is the main link , MAC IN MAC tunnel with 200M bandwidth is the backup link.

[0045] Then, referring to Figure 7, the methods for implementing service traffic switching include:

[0046] S701. At device B, use 802.1ag MAC PING to detect the quality of the primary and backup MAC IN MAC tunnels, regularly collect relevant parameters such as time delay, jitter, and packet loss rate of the primary and backup MAC IN MAC tunnels, and generate primary and backup MAC IN MAC tunnel quality. Database of MAC IN MAC tunnels.

[0047] S702. Regularly check the time delay, jitter, packet loss rate and other parameters of the primary and backup MAC IN MAC tunnels in the database. If it is found that the time delay and jitter of the primary MAC IN MAC tunnel are relatively larg...

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Abstract

The invention discloses a service flow switching method and a device for switching service flow according to link quality, so as to guarantee normal transmission of service and improve reliability of network. The method comprises switching the service flow on a master link to a reserved link when the link quality parameter of the master link is larger than or equals to the predetermined threshold while the link quality parameter of the reserved link is smaller than the predetermined threshold.

Description

technical field [0001] The present invention relates to the field of network technology, in particular to a method and device for switching service flow. Background technique [0002] Usually, there are multiple routes to the same destination, which may be equivalent or non-equivalent. When equal-cost routes exist, packets are forwarded in load sharing mode, and traffic can be adjusted through the weight value of each route. In the case of non-equivalence, the optimal route will be selected to forward the message. When the optimal route fails, the device will select an optimal route from the remaining routes to forward the message (equivalent to the original sub-optimal route). [0003] The routes in the routing table are usually generated by the routing protocol, and the routing protocol usually selects the path according to the hop count of the link and the static bandwidth of the physical link. As shown in Figure 1, when generating a route to device F on device B, since...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L12/26H04L12/24
CPCH04L45/50H04L43/16H04L45/28H04L45/00H04L45/125H04L45/22
Inventor 吕鸿
Owner HUAWEI TECH CO LTD
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