Detection and Handling of TRUNK Congestion in the ATM Network

  • Authors:

  • Charlie Yang;Chuan-Chuen Chang;Chi-Ming Chen;David Lu;Monowar Hossain

  • Affiliations:

  • AT&T, Middletown, USA NJ 07748;AT&T, Middletown, USA NJ 07748;AT&T, Middletown, USA NJ 07748;AT&T, Middletown, USA NJ 07748;AT&T, Middletown, USA NJ 07748

  • Venue:
  • APNOMS '08 Proceedings of the 11th Asia-Pacific Symposium on Network Operations and Management: Challenges for Next Generation Network Operations and Service Management
  • Year:
  • 2008

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Abstract

This paper presents a management structure and methodology for determining a root cause of trunk delay due to trunk congestion events. Based on trunk delay measurements, we conclude that a High Trunk Utilization (HTU) alert can be determined by correlating Constant Bit Rate (CBR) and Variable Bit Rate-non real time (VBR-nrt) trunk delay data. An automated adaptive procedure is developed to prevent trunk congestion before the user is impacted.