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CCNP BSCI Notes – Understanding Simple Single-Area OSPF
Thursday, November 19th, 2009OSPF 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:
CCNP BSCI Notes – Scalable EIGRP
Thursday, November 19th, 2009Configuring EIGRP Enabling EIGRP:
OReilly – Network Troubleshooting Tools
Thursday, November 19th, 2009Network 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, 2009Cisco 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, 2009Supports 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
CCNP BSCI Notes – Network Design
Thursday, November 12th, 2009Full 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
CCIE Routing and Switching Exam Certification Guide, Fourth Edition
Tuesday, November 10th, 2009CCIE 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, 2009Autonomous 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, 2009Legacy 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.