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  • Archive for November, 2009

    CCNP BSCI Notes – Understanding Simple Single-Area OSPF

    Thursday, November 19th, 2009

    OSPF Fundamentals Link-state routing protocols utilize more internal resources in favor of reducing bandwidth consumption. All OSPF routers in an area share the same Link State Database (LSDB). Link State Advertisements (LSAs) are flooded to all neighboring routers. OSPF tables: Tags: BSCI Notes, OSPF

    CCNP BSCI Notes – Scalable EIGRP

    Thursday, November 19th, 2009

    Configuring EIGRP Enabling EIGRP:        Tags: BSCI Notes, EIGRP

    OReilly – Network Troubleshooting Tools

    Thursday, November 19th, 2009

    Network Troubleshooting Tools helps you sort through the thousands of tools that have been developed for debugging TCP/IP networks and choose the ones that are best for your needs. It also shows you how to approach network troubleshooting using these tools, how to document your network so you know how it behaves under normal conditions, […]

    Cisco Router and Switch Forensics: Investigating and Analyzing Malicious Network Activity

    Thursday, November 12th, 2009

    Cisco IOS (the software that runs the vast majority of Cisco routers and all Cisco network switches) is the dominant routing platform on the Internet and corporate networks. This widespread distribution, as well as its architectural deficiencies, makes it a valuable target for hackers looking to attack a corporate or private network infrastructure. Compromised devices […]

    CCNP BSCI Notes – EIGRP Principles

    Thursday, November 12th, 2009

    Supports routed protocols like IP and IPv6 via protocol-dependent modules Uses Reliable Transport Protocol (RTP, Cisco proprietary) for some traffic (updates, queries, and replies) Uses hellos to identify/monitor neighbors Uses the Diffusing Update Algorithm (DUAL) to select routes Tags: BSCI Notes, EIGRP

    CCNP BSCI Notes – Network Design

    Thursday, November 12th, 2009

    Full mesh formula: n(n-1)/2 Example: To create a mesh between 8 nodes, 8 * (8-1) / 2 = 28; 28 links are needed. Design concepts Legacy Hierarchical Design Model Tags: BSCI Notes, Network Design

    CCIE Routing and Switching Exam Certification Guide, Fourth Edition

    Tuesday, November 10th, 2009

    CCIE Routing and Switching Exam Certification Guide, Fourth Edition is a comprehensive self-study tool for preparing for the latest CCIE Routing and Switching written exam (version 4.0). Complete coverage of all exam topics in the 4.0 blueprint ensures you will arrive at a thorough understanding of what you need to master to succeed on the […]

    CCNP BCMSN Notes – Cisco Unified Wireless Network

    Tuesday, November 10th, 2009

    Autonomous APs can be burdensome to manage in large numbers; a lightweight solution is preferred. Lightweight Access Points (LAPs) communicate with a centralized Wireless LAN Controller (WLC) through Lightweight Wireless Access Point Protocol (LWAPP) tunnels. The division of layer two functions between a LAP and WLC is referred to as a split-MAC architecture. LWAPP tunnels: […]

    CCNP BCMSN Notes – Wireless Architecture and Design

    Tuesday, November 10th, 2009

    Legacy Authentication Types Open Authentication No authentication is used; any client can associate to an AP. Pre-Shared Key (PSK) A pre-shared static Wired Equivalence Protocol (WEP) key authenticates the client to the AP. Tags: BCMSN Notes, Design, Wireless