Effect of Frame Loss on the Holding Time of a Virtual Circuit in ATM
LAN Interconnection
Mohammed Atiquzzaman
Department Electrical and Computer Systems Engineering,
Monash University Clayton Campus,
Clayton 3168, Australia.
atiq@eng.monash.edu.au
Mahbub Hassan
School of Computing and Information Technology,
Monash University Gippsland Campus,
Churchill 3842, Australia.
mahbubh@gscit-1.fcit.monash.edu.au
Abstract
We analyse the cost performance of LAN interconnection
over ATM using switched VC.
Frame loss due to buffer overflow during connection setup
has been taken into consideration in the proposed cost function.
We investigate the effect of the length of the holding time of an
idle VC
on the total cost per frame transmitted. Our simulation results
suggest
that there is no optimum holding time for minimising the total cost.
Increasing the holding time either increases or decreases
the total cost depending on the cost associated with
a connection setup and frame loss. We also show that for a given cost
associated with a frame loss
the practical range of buffer sizes is bounded by
a minimum and a maximum value. Within the practical range,
larger buffer reduces total cost. Increasing buffer
beyond the maximum size does not have any impact on the total cost.
For buffers below
the minimum size, a connection should never be closed; such buffer
sizes have, therefore, no benefit at all.
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