Method and device for regulating protection bandwidth of FRR

Abstract

The invention discloses a method and a device for regulating protection bandwidth of FRR. The method comprises the following steps: inquiring a bandwidth of a main path periodically, regulating the protection bandwidth of a backup path in real time according to corresponding regulating rules, regulating an obligated bandwidth according to an actual binding relationship when the binding relationship varies, and re-optimizing the backup path. By applying the invention, the bandwidth of the main path can be protected as far as possible after the FRR is switched, and waste of network resources caused by obligation of a large amount of protection bandwidth is avoided.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a FRR protection bandwidth adjustment method and equipment. Background technique [0002] Fast ReRoute (FRR) is a technology for realizing local network protection in Multi-Protocol Label Switching (Multi-Protocol Label Switching, MPLS) Traffic Engineering (Traffic Engineering, TE). The switching speed of FRR can reach 50ms, which can minimize the loss of data when the network fails. After the FRR function is configured on an LSP, when a link or a node on the LSP fails, traffic will be switched to the protection link, and the head node of the LSP will try to establish a new LSP. [0003] In the existing FRR rules, the following basic concepts are included: [0004] Primary LSP is the protected LSP in the current system. [0005] The standby LSP, also called a bypass LSP (Bypass LSP), is an LSP used to protect the main LSP in the current system. [0006] The loc...

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Problems solved by technology

[0017] However, there are corresponding disadvantages in configuring the reserved bandwidth: the reserved bandwidth manually configured on the Bypass LSP cannot strictly match the actual protected bandwidth. In the FRR protection environment, multiple main paths may change all the time, and the bandwidth of each main path is also different. The bandwidth value pre-configured on the Bypass LSP is only an estimated value, and the deviation may be large. If the configuration is large, it may cause waste. Small enough to not guarantee full protection of all main path bandwidth after FRR switchover

During this period, the main path traffic has not been able to get real bandwidth protection. In the case of congestion, a large amount of traffic will be lost, that is, in the case of congestion, FRR switching cannot protect the bandwidth of all the main paths.

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