How to optimally allocate redundant routers for high availability (HA) networks is a crucial task. In this paper, a 5-tuple availability function A (N ,M, , , ) is proposed to determine the minimum required number of standby routers to meet the desired availability ( ) of an HA router, where N and M are the numbers of active routers and standby routers, respectively, and , , and are a single ro...

The function of a router is to switch arriving packets to their correct output destination. A router is built to achieve a specified capacity (the sum of the rates of its interfaces), and users expect a router to consistently achieve this capacity. However, no commercial high-speed router can guarantee today that it will achieve its full capacity for all arrival traffic patterns. This is becaus...

In this paper we investigate the noise and crosstalk characteristics of all optical router based on SMZ switch using a numerical model. Two effects, the relative intensity noise (RIN) and channel crosstalk (CXT) that degrade the bit error rate (BER) performance of the router are investigated. Numerical simulation results show that for BER of 10, the sensitivity of the receiver with all-optical ...

A rotor-router walk is a deterministic version of a random walk, in which the walker is routed to each of the neighbouring vertices in some fixed cyclic order. We consider here directed covers of graphs (called also periodic trees) and we study several quantities related to rotor-router walks on directed covers. The quantities under consideration are: order of the rotor-router group, order of t...

2 Studying the Internet Topology (Underlay) 6 2.1 AS-level Topology of the Internet . . . . . . . . . . . . . . . . . . 6 2.1.1 Data Sources for AS-level Topology . . . . . . . . . . . . 7 2.1.2 Characterization Methods for AS-level Topology . . . . . 10 2.1.3 Modeling the AS-level Topology . . . . . . . . . . . . . . 13 2.2 Router-level Topology of the Internet . . . . . . . . . . . . . . . . ...

Network-on-Chips (NoCs) are important components for scalable many-core processors. Because the performance of parallel applications is usually sensitive to latency NoCs, reducing it a primary requirement. In this study, compression router that hides (de)compression-operation delay proposed. The (de)compresses contents incoming packet before switch arbitration completed, thus shortening length ...

This paper presents an asynchronous on-chip network router with Quality-of-Service (QoS) support. The router uses a virtual channel architecture with a priority-based scheduler to differentiate between multiple connections with various QoS requirements sharing the same physical channel. A gatelevel prototype of the router has been built and its functionality and performance is evaluated. The si...

Vol. 9 No. 3 1997 A DIGITAL router engineering team has refined and extended routing protocols to guarantee a five-second maximum loss-of-service time during a single failure in an Internet Protocol (IP) network. We use the term router cluster to describe our improved implementation. A router cluster is defined as a group of routers on the same local area network (LAN), providing mutual backup....

Click is a new software architecture for building flexible and configurable routers. A Click router is assembled from packet processing modules called elements. Individual elements implement simple router functions like packet classification, queueing, scheduling, and interfacing with network devices. Complete configurations are built by connecting elements into a graph; packets flow along the ...