Publication: Latency-aware resource orchestration in SDN-based packet over optical flexi-grid transport networks
Loading...
Identifiers
Publication date
2019-04-23
Defense date
Advisors
Tutors
Journal Title
Journal ISSN
Volume Title
Publisher
IEEE
Impact
Export
Abstract
In the upcoming 5G networks and following
the emerging Software Defined Network/Network
Function Virtualization (SDN/NFV) paradigm, demanded
services will be composed of a number of
virtual network functions that may be spread across
the whole transport infrastructure and allocated in
distributed Data Centers (DCs). These services will
impose stringent requirements such as bandwidth
and end-to-end latency that the transport network
will need to fulfill. In this paper, we present an orchestration
system devised to select and allocate virtual
resources in distributed DCs connected through a
multi-layer (Packet over flexi-grid optical) network.
Three different on-line orchestration algorithms are
conceived to accommodate the incoming requests by
satisfying computing, bandwidth and end-to-end latency
constraints, setting up multi-layer connections.
We addressed end-to-end latency requirements by
considering both network (due to propagation delay)
and processing delay components. The proposed algorithms
have been extensively evaluated and assessed
(via a number of figures of merit) through experimental
tests carried out in a Packet over Optical
Flexi-Grid Network available in the ADRENALINE
testbed with emulated DCs connected to it.
Description
Keywords
5G, NFV, Orchestration, SDN, Virtual network function, VNF forwarding graph
Bibliographic citation
Fichera, S., Martínez, R., Martini, B., Gharbaoui, M., Casellas, R., Vilalta, R., Muñoz, R. y Castoldi, P. (2019). Latency-aware resource orchestration in SDNbased packet over optical flexi-grid transport networks. IEEE/OSA Journal of Optical Communications and Networking, 11 (4), pp. B83-B96.