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Message generation method and device

A technology of message and message header, applied in the field of communication, can solve problems such as occupying system resources and affecting the overall performance of the MPLS system, and achieve the effect of saving system resources and improving overall performance

Inactive Publication Date: 2009-11-18
NEW H3C TECH CO LTD
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Problems solved by technology

The process of fragmenting LDP packets greatly occupies system resources and affects the overall performance of the MPLS system

Method used

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  • Message generation method and device

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Embodiment Construction

[0059] The present invention mainly provides a method for message generation. The main idea is: at least one of the LSRs participating in the initialization negotiation determines the local PDU length value according to the local PMTU length value, and uses the value in the PDU length value of the LSR participating in the initialization negotiation The smaller one is used as the final PDU length value, and the LSR participating in the initial negotiation generates an LDP packet according to the final PDU length value, so that the generated LDP packet length value is not greater than the local PMTU length value, and there is no need for fragmentation during LDP packet transmission processing, saving system resources and improving the overall performance of the MPLS system.

[0060] The present invention proposes a method for message generation, which is applied to a system including at least two LSRs. The method is as follows: figure 2 shown, including the following steps:

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Abstract

The invention discloses a message generation method and a device which are applied to a system comprising at least two LSRs. The method comprises the following steps: a first LSR and a second LSR respectively acquire a length value of a local PDU, wherein at least one of the first LSR and the second LSR acquires the length value of the local PDU according to the length value of a local PMTU; the length values of the local PDU acquired by the first LSR and the second LSR are compared and the smaller length value of the PDU is taken as the final length value of the PDU; and the first LSR and the second LSR respectively generate an LDP message according to the final length value of the PDU. In the invention, fragmentation processing is not needed in the transmission process of the LDP message, thus saving system resources and improving the overall performance of an MPLS system.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for generating a message. Background technique [0002] LDP (Label Distribution Protocol, Label Distribution Protocol) is a main protocol in the MPLS (Multi-Protocol Label Switching, Multi-Protocol Label Switching) system. LDP is specially used for label distribution in the MPLS system. LDP defines a set of procedures and messages Through these programs and messages, one LSR (Label Switching Router, label switching router) in the MPLS system can form a label binding with another LSR, and then an LSP (Label Switched Path, label switching path) is established between the two LSRs. [0003] The specific form of the LDP message in the prior art is as follows figure 1 As shown, the LDP packet includes an LDP packet message body and an LDP packet header field. Wherein, the LDP message body includes an LDP identifier (LDP identifier) ​​and TLV (Type ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L29/06H04L12/70
Inventor 王磊
Owner NEW H3C TECH CO LTD
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