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Priority monitor of open shortest path

A monitor and network controller technology, applied in the field of telecommunications, can solve unforeseen problems

Inactive Publication Date: 2007-06-13
ALCATEL LUCENT SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this tool is only suitable for packet networks and requires a vendor-neutral database structure definition stored within each network device
Also, a protocol for a polling mechanism is required, however, this cannot be foreseen in GMPLS networks

Method used

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  • Priority monitor of open shortest path
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  • Priority monitor of open shortest path

Examples

Experimental program
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Embodiment Construction

[0019] The above-explained principles of the GMPLS-Controlled Transport Network will be described in more detail with reference to Figure 1, which illustrates an exemplary network comprising five network elements NE1-NE5 using one or more fiber optic links roads are physically connected to each other. Each fiber link is illustrated as a dashed line. Fibers can also be bundled, which is represented by a circle surrounding multiple fibers belonging to the same bundle. For example, NE1 is connected to NE2 through three optical fibers forming a single bundle, to NE3 through three optical fibers forming a single bundle, and to NE4 through a single optical fiber. NE2 is also connected to NE3 and NE4 through two optical fibers, NE3 is connected to NE4 through two optical fibers, and NE5 is connected to NE4 through four optical fibers placed in two bundles.

[0020] Each fiber can carry one STM-N signal of a certain type, depending on the type of fiber used and the interface of the ...

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PUM

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Abstract

A network monitor monitors traffic on a dedicated data network passively. The data network connects network controllers which control associated network elements of an automatically switched optical transport network. The network controllers regularly advertise their locally stored network topology and status information using a predefined protocol. The monitor filters protocol frames of this predefined protocol type and extracts therefrom information about the topology and status of the transport network and displays these information graphically to a user.

Description

technical field [0001] The invention relates to the field of telecommunications, in particular to a device for displaying the topology and status of an Automatic Switching Optical Transmission Network (ASON). Background technique [0002] The transport network is used for physical layer transmission of high bit rate tributary signals. Specifically, the signal transmitted on the transmission network is encoded and multiplexed into a continuous bit stream structured into frames of the same length. Within this fixed bit-rate bitstream, the frames repeat periodically at a typical frame repetition rate of 8kHz and are structured according to a multiplexing scheme. An example of such a multiplexing hierarchy is SDH (Synchronous Digital Hierarchy, see ITU-TG.70710 / 2000), where the frames are called Synchronous Transport Modules of size N (STM-N, where N=1, 4, 16 , 64 or 256). These frames have a section overhead and contain at least one higher order multiplexing unit, called vir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/00H04L12/56H04L29/06H04L12/24H04L12/26
CPCH04L43/0811H04L41/12H04L41/22
Inventor 托马斯·莫尔
Owner ALCATEL LUCENT SAS