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Label searching method and device

A label search and label technology, applied in the field of communications, can solve the problems of repeated search operations, network resource utilization, data message forwarding efficiency, waste of network resources, network resource utilization, data message forwarding efficiency, etc. Data packet forwarding rate and the effect of saving network resources

Inactive Publication Date: 2015-02-11
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Obviously, the repetitive search operation of the last node in the T-MPLS network will inevitably waste a lot of network resources, resulting in a decrease in network resource utilization and data message forwarding efficiency
[0006] Aiming at the problems of the repetitive search operation of the last node in the T-MPLS network in related technologies, the utilization rate of network resources and the reduction of data message forwarding efficiency have not been proposed yet.

Method used

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  • Label searching method and device
  • Label searching method and device
  • Label searching method and device

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Embodiment Construction

[0025] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0026] An embodiment of the present invention provides a tag search method. figure 2 is a flow chart of a tag search method according to an embodiment of the present invention, such as figure 2 As shown, the method mainly includes the following steps (step S202-step S204):

[0027] Step S202, according to the label in the message, look up the label attribute corresponding to the label in the TCAM, wherein the label includes: inner label or outer label, and label attributes include: forwarding label or non-forwarding label Label;

[0028] Step S204, in the case that the label attribute is a forwarding label, search the random access memory (RAM) according to the forwarding label, and obtain the l...

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Abstract

Disclosed are a method and device for label lookup. The method for label lookup comprises: looking up, on the basis of a label in a packet, in a ternary content-addressable memory (TCAM) for a label attribute corresponding to the label, where the label comprises: an inner-layer label or an outer-layer label, and, the label attribute comprises: a forwarding label or a non-forwarding label; and, insofar that the label attribute is the forwarding label, looking up in a random access memory (RAM) on the basis of the forwarding label, and acquiring label forwarding information. The present invention achieves the effect of conserved network resources and increased packet forwarding rate.

Description

technical field [0001] The present invention relates to the field of communications, in particular to a tag search method and device. Background technique [0002] MPLS (Multi-protocol Label Switch, Multi-Protocol Label Switching) is a system for fast data packet switching and routing, which is proposed to improve the speed of data packet forwarding, and traditional IP (Internet Protocol, Internet Protocol) Compared with the longest matching search routing method, MPLS can forward data according to the pre-assigned labels during data forwarding, which saves processing time such as matching search. T-MPLS (Transport-MPLS, Transport Multi-Protocol Label Switching) is an MPLS-based connection-oriented packet transmission technology, which simplifies some complex functions of the MPLS data forwarding plane and adds traditional connection-oriented OAM (Operation Administration and Maintenance, operation, management and maintenance) function and protection recovery function, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/723H04L12/741H04L45/50H04L45/74
CPCH04L45/00H04L45/50
Inventor 冷星星
Owner ZTE CORP
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