Bandwidth-based MBB path calculation method and system

A bandwidth and route calculation technology, applied in the bandwidth-based MBB route calculation method and system field, can solve the problems of reduced work efficiency, complexity, packet loss, etc., and achieve the goal of improving work efficiency, reducing packet loss rate, and high path calculation accuracy Effect

Active Publication Date: 2018-11-06
FENGHUO COMM SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) When the existing MBB establishes a new path, it will judge whether the available bandwidth of the original path is higher than the bandwidth occupied by the new path, and if so, continue to use the nodes of the original path, otherwise the new path cannot be established
[0006] (2) Since the used bandwidth of the original path cannot be known, it is necessary to obtain the port information of each node (such as IP address, next hop, etc.) ) and the used bandwidth of the link between two adjacent nodes, and the process of obtaining the port information (such as IP address, next hop, etc.) of each node and the used bandwidth of the link between adjacent nodes is more complicated ; Specifically, each node other than the head node sends port information and link bandwidth between adjacent nodes to the head node, which will not only reduce work efficiency, but also cause packet loss

Method used

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  • Bandwidth-based MBB path calculation method and system
  • Bandwidth-based MBB path calculation method and system

Examples

Experimental program
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Effect test

Embodiment 1

[0043] Embodiment one: see figure 1 As shown, the bandwidth-based MBB path calculation method in the embodiment of the present invention specifically includes the following steps:

[0044] S1: After the original LSP path is established and communicated, the port information of each node in the original path, the used bandwidth of the link between two adjacent nodes, and the initial Available bandwidth, form MBB information, go to S2.

[0045] S2: When a new path needs to be established, calculate the new path attribute information that meets the requirements of the new path according to the MBB information; the new path requirement includes the bandwidth occupied by the new path, and the new path attribute information includes the port information of each node in the new path, and the adjacent Additional occupied bandwidth for the link between the 2 nodes. In the process of calculating the attribute information of the new path, when two adjacent nodes of the new path exist i...

Embodiment 2

[0048] Embodiment 2: On the basis of Embodiment 1, the new path requirement also includes the head node and the tail node of the new path, and the path node indication requirements, and the head and tail nodes of the new path are the same as the original path; the process of S2 includes:

[0049] S201: Use the first node as the new path node, select the first node as the current node, and go to S202.

[0050] S202: Determine whether there are adjacent nodes of the current node in the MBB information, if so, go to S203, otherwise go to S204;

[0051] S203: Determine whether the initial available bandwidth of the link between the current node and the adjacent node is above the bandwidth occupied by the new path, and the adjacent node meets the indication requirements of the path node. Occupy the bandwidth and the corresponding bandwidth in the MBB information, set an additional occupied bandwidth for the link between the current node and the new path node, and go to S205; otherw...

Embodiment 3

[0056] Embodiment 3: On the basis of Embodiment 1, the path node indication requirement includes designated use nodes and prohibited use nodes. The nodes that meet the path node indication requirements in Embodiment 2 are: the node is the designated use node, or the node is not Disable node.

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Abstract

The invention discloses a bandwidth-based MBB path calculation method and a system thereof, and relates to the field of communication path establishment. The method comprises the following steps: whena new path needs to be established, acquiring the MBB information of the original path, wherein the MBB information includes the initial available bandwidth of the link between the two adjacent nodes; and calculating the attribute information of the new path conforming to the occupied bandwidth of the new path according to the MBB information, wherein the standard that meets the bandwidth occupied by the new path includes: the initial available bandwidth of the link between two adjacent nodes in the original path, which is above the bandwidth occupied by the new path. The invention is capableof establishing a new path by using the original path on the basis of the available bandwidth of the original path and the bandwidth occupied by the new path. The invention is high in path calculation precision, and is also capable of reducing the packet loss rate when the new path is established, which is not only high in working efficiency, but also capable of guaranteeing the communication quality.

Description

technical field [0001] The invention relates to the field of communication path establishment, in particular to a bandwidth-based MBB (Make Before Break, build before failure) path calculation method and system. Background technique [0002] MBB establishes a new path (also called Modify LSP) before the original LSP (Label Switch Path, Label Switching Path) is removed; during traffic switching, change as much as possible without losing data or occupying additional bandwidth The mechanism of MPLS TE (Multi-Protocol Label Switching Traffic Engineering, Multi-Protocol Label Switching Traffic Engineering) tunnel attributes (such as changing the bandwidth of the original path, or modifying the path, deactivating some of the original paths, and replacing them with other paths, etc.). [0003] The traditional MPLS-TE method for implementing MBB is: when the tunnel attributes need to be changed, the MBB is triggered to establish a new path with a suitable bandwidth. When there are ...

Claims

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Application Information

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IPC IPC(8): H04L12/729H04L12/911H04L45/125
CPCH04L45/125H04L47/70
Inventor 周芬林黄雷刘雪
Owner FENGHUO COMM SCI & TECH CO LTD
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