Abstract
The backbone infrastructure for providing carrier-class services, such as
a wavelength-switched optical network (WSON), usually involves equipment
from multiple vendors. For intelligent path control in the WSON, it is
highly desirable to introduce a unified generalized multiprotocol label
switching (GMPLS) control plane, which is beneficial for reducing the
operational cost and facilitating the dynamic service recovery. However, the
interoperability issue of GMPLS-enabled WSON among multiple vendors has not
been investigated to date, preventing its wide deployment in an actual
operational scenario. Accordingly, in this paper, we experimentally present
a highly resilient WSON with a multivendor interoperable GMPLS control
plane. We successfully verify the interworking of the GMPLS control plane
and wavelength-switching equipment from multiple vendors, and experimentally
present dynamic wavelength path control and dynamic lightpath recovery from
single-link failures that occur at different times and multiple link
failures that occur simultaneously on a multivendor WSON testbed with both
control and data planes. To the best of our knowledge, the interoperability
trial of GMPLS-controlled WSON is a world first.
© 2011 IEEE
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