Continuing research begun in 2], we investigate problems of reserving capacity in the arcs of a network, subject to the constraint that, on the failure of any one arc, there is enough reserved capacity on the remaining arcs to support a ow of value T from a source s to a destination t. We also impose upper bounds on the amount of capacity we may reserve on the arcs: this alters the nature of th...

The p-Cycle concept is an efficient way to protect the network traffic against failures of network elements. We present the methods and issues related to network planning, management and operations of p-Cycles and highlight the advantages using this concept. Furthermore we report efficiency results of a case-study of the deployment of p-Cycles in Wavelength Divison Multiplex (WDM) networks.

The two main alternatives for achieving high QoS on the public internet are (i) admission control and (ii) capacity overprovisioning. In the study of these alternatives the implicit (and sometimes explicit) message is that ideally, QoS issues should be dealt with by means of sophisticated admission control (AC) algorithms, and only because of their complexity providers fall on the simpler, perh...

Resilient and exposure-resilient functions are functions whose output appears random even if some portion of their input is either revealed or fixed. We explore an alternative way of characterizing these objects that ties them explicitly to the theory of randomness extractors and simplifies current proofs of basic results. We also describe the inclusions and separations governing the various cl...

In this work we present a tool for the automated design of Wireless Mesh Networks (WMN). The general scenario we envision is that of constructing WMNs with WLAN networks as clients (tier 1) and a mesh network (tier 2) to provide interWLAN as well as gateway connectivity. Our main aim in this work is to a) design capacity-constrained WMNs, b) build resilient WMNs with transient demands. IEEE 802...

A major challenge in designing resilient infrastructure is to meet the needs of sustainable development (Kennedy & Corfee-Morlot, 2013). Sustainable development requires a high degree of energy efficiency. Municipal wastewater treatment plants (WWTPs), in particular, have the potential to be much more sustainable. In the U.S., 3 – 4% of the total energy consumed is dedicated to WWTPs and drinki...

ODMRP (On-Demand Multicast Routing Protocol) [5] [7] [1] is a popular multicast protocol for wireless ad hoc networks. The strengths of ODMRP are simplicity, high packet delivery ratio, and non-dependency on a specific unicast protocol. ODMRP floods a route request over the entire network to select a set of forwarding nodes for packet delivery. However, a single forwarding path is vulnerable to...

Salmon are inherently resilient species. However, this resiliency has been undermined in British Columbia by a century of centralized, command-and-control management focused initially on maximizing yield and, more recently, on economic efficiency. Community and cultural resiliency have also been undermined, especially by the recent emphasis on economic efficiency, which has concentrated access ...

A common paradigm for a network service architecture is to provide a number of different services or applications in which all of them share resources; the routing framework provides the best path to all services. A simple twist to this basic notion is if we were to architect in a way to virtualize the network so that different services are clustered into different virtual, adaptive partitions ...