Switch Allocation (SA) holds a critical stage in Network-on-Chip (NoC) routers, its performance gets affected adversely due to Head-of-Line (HoL) blocking. In traditionally used Input-Queued Routers (IQR), packets are arranged particular order each Virtual Channel (VC). This implementation is vulnerable HoL blocking, as the switch allocator can allocate only those which available at head VC. th...

Choosing a path length for low latency anonymous networks that optimally balances security and performance is an open problem. Tor’s design decision to build paths with precisely three routers is thought to strike the correct balance. In this paper, we investigate this design decision by experimentally evaluating several of the key benefits and drawbacks of two-hop and three-hop paths. We find ...

We aim at improving the power efficiency of network routers without compromising their performance. Using server-based software routers as our prototyping vehicle, we investigate the design of a router that consumes power in proportion to the rate of incoming traffic. We start with an empirical study of power consumption in current software routers, decomposing the total power consumption into ...

In order to offer low communication latency and reduced buffer requirements, wormhole routing has been used in almost all new generation parallel computers. It has been a powerful switching technique where its communication latency is distance insensitive. On the other hand, deadlock avoidance is the most critical issue in wormhole networks. If deadlock handling is not considered, wormhole rout...

In Wireless Mesh Networks (WMNs), mobile clients may experience frequent handoffs due to the relatively small transmission range of the mesh routers. Each handoff may lead to packet delays and/or packet losses, which limits the performance of real-time applications over WMNs. In this work, we propose BASH—a BackhaulAided Seamless Handoff scheme. BASH takes advantage of the wireless backhaul fea...

This white paper describes how an ISP can reduce its FIB size, and in so doing delay the time at which the ISP must upgrade its routers. The approach, called Virtual Aggregation (VA) works with existing routers. An ISP can autonomously deploy VA ― it does not need to coordinate with its neighbor ISPs. While VA results in some increased load and path latency, the increase is minimal. VA can shri...

Mobility support in the wireless network enables us to be served continuous service. Fast Handover for Mobile IPv6 (FMIPv6) is proposed to support a faster handover than that of Mobile IPv6. Unfortunately, FMIPv6 shows too long handover latency to serve smooth video traffic flows. We proposed semi-soft FMIPv6 handover to minimize the handover latency to serve video traffic efficiently. The prop...

Asynchronous on-chip networks are power efficient and tolerant to process variation but they are slower than synchronous on-chip networks. One reason for the low speed is the way that asynchronous routers use to build wide channels. To meet the bandwidth requirement, current routers broaden their channels by synchronizing multiple sub-channels. The C-element tree in the completion detection cir...

Although Tor is the most widely used system for providing anonymity services, its users often experience very high delays. Because much of Tor usage is for Web applications, which are sensitive to latency, it is critical to reduce delays in Tor. To take an important step in this direction, we seek an in-depth understanding of delays in Tor. By taking snapshots of the entire Tor network within a...

This paper introduces a router delay model that accurately models key aspects of modern routers. The model accounts for the pipelined nature of contemporary routers, the specific flow control method employed, the delay of the flowcontrol credit path, and the sharing of crossbar ports across virtual channels. Motivated by this model, we introduce a microarchitecture for a speculative virtual-cha...