open shortest path first Resources on ZDNet

ZDNet Resources

Scale OSPF and IS-IS without sacrificing stability or performance: If you simply follow the OSPF and IS-IS standards, you may get a link state protocol implementation that is workable for small networks, but it will lack the stability, scalability, and accuracy necessary to survive in large-scale networks. For router vendors wanting to market to the largest network...; Tags: Performance, Open Shortest Path First, IS-IS; Book chapters 2007-06-22
Large-Scale Network Simulation Techniques: Examples of TCP and OSPF Models: Simulation of large-scale networks remains to be a challenge, although various network simulators are in place. This paper identifies fundamental issues for large-scale network simulation, and proposes new techniques that address them. First, it exploits optimistic parallel simulation techniques to enable fast execution on inexpensive hyper-threaded, multiprocessor systems. Second, the...; Tags: Technique, Network, Open Shortest Path First, TCP, Productivity, Networking; White papers 2007-01-01
Network Design for OSPF Routing: Internet Protocol (IP) traffic follows rules established by routing protocols, such as Open Shortest Path First (OSPF). Each router computes shortest paths using weights assigned by the network operator, and creates destination tables used to direct each IP packet to the next router on the path to its final destination....; Tags: Network, Open Shortest Path First, IP, Routing Protocol, Network Design, Internet Protocol Traffic, Networking, Network Technology; White papers 2007-01-01
Survivable IP Network Design With OSPF Routing: Internet protocol (IP) traffic follows rules established by routing protocols. Shortest path-based protocols, such as Open Shortest Path First (OSPF), direct traffic based on arc weights assigned by the network operator. Each router computes shortest paths and creates destination tables used for routing flow on the shortest paths. If a...; Tags: Router, Network, Open Shortest Path First, IP, IP Network, Path, Internet Protocol Traffic, Networking, Routers & Switches, Network Technology; White papers 2006-10-02
OSPF Design Guide: The Open Shortest Path First (OSPF) protocol is an Interior Gateway Protocol used to distribute routing information within a single Autonomous System. OSPF protocol was developed due to a need in the internet community to introduce a high functionality non-proprietary Internal Gateway Protocol (IGP) for the TCP/IP protocol family. The...; Tags: Open Shortest Path First, Open Shortest Path First Protocol; White papers 2006-04-06

Learn how to properly configure and use OSPF and EIGRP routing protocols: This sample chapter, taken from CCNA Certification Library (CCNA Self-Study, exam #640-801), discusses link-state and balanced hybrid protocols do their work. Learn how two different types of routing protocols, link-state and balanced hybrid, learn the current best routes and put those subnets in the IP routing table....; Tags: CCNA, Open Shortest Path First, Routing Protocol, Cisco Systems Inc.; Book chapters 2006-01-18
Improve network performance with routing redistribution of OSPF: This sample chapter, taken from OSPF Network Design Solutions, 2nd Edition, discusses route redistribution and how it operates within OSPF. Redistribution in OSPF can be highly dependent on what type of route you are trying to redistribute. Learn about route redistribution and how it operates within OSPF.This...; Tags: Redistribution, Network, Open Shortest Path First; Book chapters 2006-01-18
Survivable Composite-Link IP Network Design With OSPF Routing: OSPF, or Open Shortest Path First, is a commonly used interior gateway protocol. Given a network topology, a set of link types to be deployed, each having a different capacity, and predicted traffic demands, the problem considered in this paper is to find a set of OSPF weights that minimizes...; Tags: Open Shortest Path First; White papers 2006-01-05
Addressing OSPF Load in IP/MPLS Networks: There is an increasing trend towards deploying IP/MPLS networks that provide value added services such as virtual private networks, guaranteed bandwidth pipes, etc. to network users. Such networks are required to be highly reliable and robust even under peak load and/or unanticipated situations of link/router failures. TE mechanisms typically involve...; Tags: MPLS, Network, Open Shortest Path First, IP, Networking; White papers 2005-04-21
Bidirectional Forwarding Detection for OSPF: Bidirectional Forwarding Detection (BFD) provides a method for network administrators to configure sub-second Layer 2 failure detection between adjacent network nodes. Furthermore, they can configure their routing protocols to respond to BFD notifications, and begin Layer 3 route convergence almost immediately. Provided that the appropriate caveats mentioned in this paper...; Tags: Detection, Network, Open Shortest Path First, Cisco Systems Inc., Bidirectional Forwarding Detection, Networking; White papers 2005-02-01
Cisco Security Advisory: Cisco IOS Malformed OSPF Packet Causes Reload: A Cisco device running Internetwork Operating System (IOS) and enabled for the Open Shortest Path First (OSPF) protocol is vulnerable to a Denial of Service (DoS) attack from a malformed OSPF packet. The OSPF protocol is not enabled by default. The vulnerability is only present in Cisco IOS release trains...; Tags: Security, Cisco IOS, Vulnerability, Open Shortest Path First, Cisco Systems Inc., Open Shortest Path First Protocol; White papers 2004-08-27
open shortest path first (OSPF) Conformance and Performance Testing: The Open Shortest Path First (OSPF) routing protocol has been gaining support as the most popular Interior Gateway Protocol (IGP) used in IP networks. This white paper provides an overview of OSPF basics: how it is defined and how it operates. It also introduces appropriate test methodologies to help ensure...; Tags: Performance, Network, Open Shortest Path First, Ixia, Open Shortest Path First Routing Protocol, Networking; White papers 2004-03-14
RIP and OSPF Redistribution: This case study addresses the issue of integrating Routing Information Protocol (RIP) networks with Open Shortest Path First (OSPF) networks. Most OSPF networks also use RIP to communicate with hosts or to communicate with portions of the internetwork that do not use OSPF. Cisco supports both the RIP and OSPF...; Tags: Network, Open Shortest Path First, Routing Information Protocol, Cisco Systems Inc.; White papers 2001-06-19
open shortest path first: Open Shortest Path First (OSPF) is a routing protocol developed for Internet Protocol (IP) networks by the interior gateway protocol (IGP) working group of the Internet Engineering Task Force (IETF). The working group was formed in 1988 to design an IGP based on the shortest path first (SPF) algorithm...; Tags: Open Shortest Path First, Open Shortest Path First Specification; White papers 1999-06-17
International Network Services Case Study: Countrywide Financial Corporation: Countrywide Financial Corporation drives a significant amount of business over its network and due to exponential growth in lending, faced the need to enhance its network in order to improve performance. Countrywide recognized the urgent need to migrate its network to the OSPF protocol and design a new Layer 3...; Tags: Countrywide Financial Corp., Financial, Network, Open Shortest Path First, Networking; Case studies

Additional Resources

Facebook makes its own 'data portability' move, Google to follow?: Not to be outdone by MySpace's "Data Availability" initiative, Facebook announced on Friday its own data portability strategy dubbed "Facebook Connect". Described as "the next iteration of Facebook Platform" the new feature will allow users to "connect" their Facebook identity, friends and privacy to participating sites --...; Tags: Google Inc., Facebook, Social Networking, Channel Management, Web Site Development, Security, Online Communications, Marketing, Advertising & Promotion, Internet, Steve O\'Hear; Blog posts 2008-05-12
News to know: Facebook; OpenOffice; Firefox; RIM: Notable headlines: Paula Rooney: Firefox 3 RC1 code complete, due in late May Joe McKendrick: Is anyone ready to process a trillion events per day? Tom Foremski: Informatica is on the block say senior sources Michael Krigsman: Hosted...; Tags: Apple iPhone, Google Inc., Facebook, OpenOffice, Research In Motion Ltd., Mozilla Firefox, Health Care, Microsoft Corp., Vertical Industries, Benefits, Healthcare, Microsoft Windows XP, Enterprise Software, Software, Human Resources, Operating Systems, Microsoft Windows, Larry Dignan; Blog posts 2008-05-12
Will Microsoft kill Linux on ULPCs?: Obviously, Microsoft has a significant interest in making sure that users of the new breed of netbooks and MIDs hitting the market don't get too comfortable using Linux. Many manufacturers have taken to installing various flavors of Linux on these devices to minimize footprint, improve performance, and reduce costs...; Tags: Microsoft Windows XP Home Edition, Microsoft Corp., ULPC, Negroponte, Linux, Microsoft Windows XP, Microsoft Windows, Operating Systems, UNIX, Open Source, Software, Christopher Dawson; Blog posts 2008-05-11
Microsoft's Hailstorm reappearing in the cloud?: "What is this Windows Live Mesh? It's a way to synchronize files." Joel Spolsky -- in classic Joel Spolsky style -- takes on Microsoft (but Google is also on his "radar") to task for fueling a round of hype around the whole notion of Cloud Computing....; Tags: Hype, Cloud Computing, Microsoft Corp., Microsoft Windows, Operating Systems, Software, Joe McKendrick; Blog posts 2008-05-11
Is anyone ready to process a trillion events per day?: What is event processing and how could it make a difference? Here is one example of where it could take us: Scientists are talking about the possibility of an in-body network that could detect heart attacks or diabetic collapses and alert emergency services. A typical company deals...; Tags: Event, Supply Chain Management (SCM), Sales Strategy, Financial Services, Enterprise Software, Software, Sales, Joe McKendrick; Blog posts 2008-05-11