Control method for packet sequence switch on transmission path of multiple protocol label switch

Abstract

The invention relates to the network communication technology, in particular relates to the MPLS network fault recovery technology. The invention discloses a message order control method of the MPLS network transmission path switching in order to aim at the technical problem that the message disordering occurs easily when the message transmission path is switched found in the MPLS network in the prior art; the technical proposal of the invention includes that the message sequence is labeled initiatively and controlled; the message disordering is avoided through the mechanism; the message order control method controls the message transmission sequence according to the identification label in the message; when the message path is switched from the main label exchange path to the backup label exchange path; a disordering control label is imbedded into the inner layer of the message forwarded in the backup label exchange path; a layer of switching label is imbedded into the inner layer ofthe last message forwarded in the backup label exchange path; the router controls the message sequence in the confluence point. The message order control method is applicable to the fault recovery field in the MPLS network environment.

Description

technical field [0001] The invention relates to network communication technology, in particular to multi-protocol label switching network failure recovery technology. Background technique [0002] Multiprotocol Label Switching (MPLS for short) network fault recovery technology means that in an MPLS network environment, when the working path (primary label switching path) for transmitting data fails, the traffic is quickly switched to an undamaged path (Protection path, or called backup label switching path) technology to continue transmission. MPLS fault recovery technology is one of the important advantages of MPLS technology. Because of its fast speed, high service quality and easy expansion, it has become one of the research hotspots in the MPLS field. Currently, the well-known MPLS fault recovery schemes based on the protection switching mechanism are the Haskin scheme and the Makam scheme, which can provide fast path switching. However, when the fault on the primary l...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is aimed at the technical problem that in the prior art MPLS network environment, when the message transmission path is switched, it is easy to send out of order of the message, and to provide a method for controlling the out of order of the message in the MPLS network, so as to avoid the problem caused by the out of order of the message. Network performance drops

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