Optimization and Performance of Network Restoration Schemes for Wide-Area Teletraffic Networks
D. Medhi
Computer Science Telecommuncations
University of Missouri-Kansas City
5100 Rockhill Road
Kansas City, MO 64110-2499 USA
Email: dmedhi_AT_cstp.umkc.edu
R. Khurana*
Sprint Corporation
Burlingame, California
(*work done while at the University of Missouri-Kansas City)
Email: rajeev.khurana_AT_sprint.sprint.com
Abstract
In the event of a major network outage such as a fiber cable cut, a network c
an experience significant deterioration of network performance. To address such
a situation, a network can be equipped with restoration capacity. We present her
e a mathematical model and design algorithm for determination of transmission ne
twork restoration capacity.
We then present models for two restoration options -- connection based restorati
on and load directed restoration (for restoration of bundle of circuits) -- and
consider their impact on a wide-area dynamic call routing teletraffic network wh
en the restoration capacity is limited (tight). Our network simulation of failur
e and restoration of a dynamic call routing teletraffic network shows that
the load directed approach generally performs better than the connection based a
pproach.
Keywords: Wide-are networks; dynamic call rouitng; teletraffic networks; restoration capacity design; restoration rerouting; multi-commodity flow models; network restoration performance
JNSM: Vol. 3, No. 3, 1995
Optimization and Performance of Network Restoration Schemes for Wide-Area Teletraffic Networks [Vol. 3, No. 3, 1995]
NOTE: only abstract of paper available on-line
Back to JNSM main page