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1566989 
Journal Article 
MPLS-TE and MPLS VPNs with OpenFlow 
Sharafat, A; Das, S; Parulkar, G; Mckeown, N 
2011 
Yes 
Computer Communications Review
ISSN: 0146-4833 
41 
4 
452-453 
WOS:000302124800066 
We demonstrate MPLS Traffic Engineering (MPLS-TE) and MPLS based Virtual Private Networks (MPLS VPNs) using OpenFlow [1] and NOX [6]. The demonstration is
the outcome of an engineering experiment to answer the following questions: How hard is it to
implement a complex control plane on top of a network controller such as NOX? Does the global
vantage point in NOX make the implementation easier than the traditional method of implementing
it on every switch, embedded in the data plane? We implemented every major feature of MPLS-TE and
MPLS-VPN in just 2,000 lines of code, compared to much larger lines of code in the more
traditional approach, such as Quagga-MPLS. Because NOX maintains a consistent, up-to-date
topology map, the MPLS control plane features are quite simple to implement. And its simplicity
makes it easy to extend: We have easily added several new features; something a network operator
could do to customize their network to meet their customers' needs. The demo consists of two
parts: MPLS-TE services and then MPLS VPN driven by a GUI. 
Management; Design; Experimentation; MPLS; MPLS-TE; VPN; Traffic Engineering; OpenFlow 
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