Provisioning nonconflicting restoration policies in a multiservice IP network

Joseph Kroculick; Cynthia Hood

doi:10.1117/12.434428

26 July 2001 Provisioning nonconflicting restoration policies in a multiservice IP network

Joseph Kroculick, Cynthia Hood

Proceedings Volume 4527, Technologies, Protocols, and Services for Next-Generation Internet; (2001) https://doi.org/10.1117/12.434428
Event: ITCom 2001: International Symposium on the Convergence of IT and Communications, 2001, Denver, CO, United States

Abstract

Limited attention has been paid to the interactions of service restoration protocols that operate during a fiber cut to restore connectivity between communications equipment. Historically, restoration protocols were deployed only at the SONET layer in telephony networks. SONET frames that carried voice-grade signals such as a T1 or T3 would be redirected to protection path over architectures that supported bidirectional communication. With the advent of new communication technologies such as ATM, IP and WDM, a cable cut can affect multiple routing processes at each of these layers even if a particular network region only supports a few of these technologies. For example, restoration processes at an arbitrary layer in adjacent networks might trigger if lower-layer protocols don't finish within specific deadlines. With the growth of data traffic and a wide range of service offerings, the telecommunication networks of the future are growing more complex, requiring multiple interactions between software systems. Failures will be difficult to pinpoint and the cooperation of the repair processes will be key to ensure that services traversing multiple networks are not interrupted.

Citation Download Citation

Joseph Kroculick and Cynthia Hood "Provisioning nonconflicting restoration policies in a multiservice IP network", Proc. SPIE 4527, Technologies, Protocols, and Services for Next-Generation Internet, (26 July 2001); https://doi.org/10.1117/12.434428

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KEYWORDS

Networks

Switches

Wavelength division multiplexing

Control systems

Systems modeling

Asynchronous transfer mode

Bridges

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