ABSTRACT This study examined resilient
packet ring technology, the
resilient packet Ring is a ring based network protocol being standardised by
IEEE. Rings is a dominant topology and is built using several point to point
connections. Rings are the dominant topology in metropolitan backbone primarily
for their protection properties, that is, even under a link failure, full
connectivity among all ring nodes is maintained. The network deployment by far
has been done using SONET/SDH rings and Gigabit Ethernet. The dual ring
configuration is present in them and one of the rings is used as a backup ring
in case of link failure. But these technologies suffer from several
disadvantages. The static bandwidth allocation and network monitoring
requirements increase the total cost of SONET network. On the other hand, a
Gigabit Ethernet Ring can provide full statistical multiplexing, but suffers
from poor utilization and unfairness. Low utilization arises because Ethernet
spanning tree protocol requires that one link be disabled to preclude “loops,â€
thereby preventing traffic from being forwarded along the true shortest path to
the destination. Other ring technology such as FDDI does not employ spatial
reuse. The current standard suffers from several drawbacks-fairness algorithm,
slow convergence, Class-of-service and dual ring utilisation.
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