france telecom R&D 15 ITU-T Workshop on Security Seoul (Korea), 13-14 May 2002 ATM network (1/2) ATM v/s SDH-SONET Bandwidth on-demand v/s no dynamic bandwidth control Bursty traffic v/s switched services, private lines Logical v/s physical path structure Variations of VPs and VCs capabilities (from 0 to the physical link rate) v/s fixed capacities Non-hierarchy v/s hierarchy path capacity Separation of capacity allocation and physical route assignment for VPs and VCs OAM bandwidth with allocation on demand delay reduction for restoration message exchange, quicker detection of system degradation Faster detection of soft failure
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