Troubleshooting IP Routing Protocols (CCIE Professional Development Series)

The comprehensive, hands-on guide for resolving IP routing problems Understand and overcome common routing problems associated with BGP, IGRP, EIGRP, OSPF, IS-IS, multicasting, and RIP, such as route installation, route advertisement, route redistribution, route summarization, route flap, and neighbor relationships Solve complex IP routing problems through methodical, easy-to-follow flowcharts and step-by-step scenario instructions for troubleshooting Obtain essential troubleshooting skills from detailed case studies by experienced Cisco TAC team members Examine numerous protocol-specific debugging tricks that speed up problem resolution Gain valuable insight into the minds of CCIE engineers as you prepare for the challenging CCIE exams As the Internet continues to grow exponentially, the need for network engineers to build, maintain, and troubleshoot the growing number of component networks has also increased significantly. IP routing is at the core of Internet technology and expedient troubleshooting of IP routing failures is key to reducing network downtime and crucial for sustaining mission-critical applications carried over the Internet. Though troubleshooting skills are in great demand, few networking professionals possess the knowledge to identify and rectify networking problems quickly and efficiently. Troubleshooting IP Routing Protocols provides working solutions necessary for networking engineers who are pressured to acquire expert-level skills at a moment's notice. This book also serves as an additional study aid for CCIE candidates. Authored by Cisco Systems engineers in the Cisco Technical Assistance Center (TAC) and the Internet Support Engineering Team who troubleshoot IP routing protocols on a daily basis, Troubleshooting IP Routing Protocols goes through a step-by-step process to solving real-world problems. Based on the authors' combined years of experience, this complete reference alternates between chapters that cover the key aspects of a given routing protocol and chapters that concentrate on the troubleshooting steps an engineer would take to resolve the most common routing problems related to a variety of routing protocols. The book provides extensive, practical coverage of BGP, IGRP, EIGRP, OSPF, IS-IS, multicasting, and RIP as run on Cisco IOS Software network devices. Troubleshooting IP Routing Protocols offers you a full understanding of invaluable troubleshooting techniques that help keep your network operating at peak performance. Whether you are looking to hone your support skills or to prepare for the challenging CCIE exams, this essential reference shows you how to isolate and resolve common network failures and to sustain optimal network operation. This book is part of the Cisco CCIE Professional Development Series, which offers expert-level instruction on network design, deployment, and support methodologies to help networking professionals manage complex networks and prepare for CCIE exams.

Autorentext
Zaheer Aziz, CCIE No. 4127, is a network consulting engineer in the Internet Infrastructure Services group for Cisco Systems, providing consulting services to major ISPs in the MPLS and IP routing protocols area. Johnson Liu, CCIE No. 2637, is a senior customer network engineer with the Advance Network Services Team for the enterprise in Cisco Systems. Abe Martey, CCIE No. 2373, is a product manager of the Cisco 12000 Internet Router Series for Cisco Systems, specializing in high-speed IP routing technologies and systems. Faraz Shamim, CCIE No. 4131, is a network consulting engineer with the Advance Network Services Team for the Service Provider (ANS-SP) for Cisco Systems, providing consulting services to his dedicated Internet service providers.

Inhalt
Introduction. 1. Understanding IP Routing. IP Addressing Concepts. IPv4 Address Classes. IPv4 Private Address Space. Subnetting and Variable-Length Subnet Masks. Classless Interdomain Routing. Static and Dynamic Routes. Dynamic Routing. Unicast Versus Multicast IP Routing. Classless Versus Classful IP Routing Protocols. Interior Gateway Protocols Versus Exterior Gateway Protocols. Distance Vector Versus Link-State Protocols. Distance Vector Routing Concepts. Link-State Protocols. Routing Protocol Administrative Distance. Fast Forwarding in Routers. Summary. Review Questions. References. 2. Understanding Routing Information Protocol (RIP). Metric. Timers. Split Horizon. Split Horizon with Poison Reverse. RIP-1 Packet Format. RIP Behavior. RIP Rules for Sending Updates. RIP Rules for Receiving Updates. Example of Sending Updates. Example of Receiving Updates. Why RIP Doesn't Support Discontiguous Networks. Why RIP Doesn't Support Variable-Length Subnet Masking. Default Routes and RIP. Protocol Extension to RIP. Route Tag. Subnet Mask. Next Hop. Multicast Capability. Authentication. Compatibility Issues. Summary. Review Questions. Further Reading. 3.Troubleshooting RIP. Flowcharts to Solve Common RIP Problems. Troubleshooting RIP Routes Installation. Problem: RIP Routes Not in the Routing Table. RIP Routes Not in the Routing Table-Cause: Missing or Incorrect network Statement. Debugs and Verification. Solution. RIP Routes Not in the Routing Table-Cause: Layer 1/2 Is Down. Debugs and Verification. Solution. RIP Routes Not in the Routing Table-Cause: distribute-list in Is Blocking the Route. Debugs and Verification. Solution. RIP Routes Not in the Routing Table-Cause: Access List Blocking RIP Source. Address. Debugs and Verification. Solution. RIP Routes Not in the Routing Table-Cause: Access List Blocking RIP Broadcast or Multicast (in Case of RIP-2). Debugs and Verification. Solution. RIP Routes Not in the Routing Table-Cause: Incompatible RIP Version Type. Debugs and Verification. Solution. RIP Routes Not in the Routing Table-Cause: Mismatch Authentication Key (RIP-2). Debugs and Verification. Solution. RIP Routes Not in the Routing Table-Cause: Discontiguous Network. Debugs and Verification. Solution. RIP Routes Not in the Routing Table-Cause: Invalid Source. Debugs and Verification. Solution. RIP Routes Not in the Routing Table-Cause: Layer 2 Problem (Switch, Frame Relay, Other Layer 2 Media). Debugs and Verification. Solution. RIP Routes Not in the Routing Table-Cause: Offset List Has a Large Metric Defined. Debugs and Verification. Solution. RIP Routes Not in the Routing Table-Cause: Routes Reached RIP Hop Count Limit. Debugs and Verification. Solution. Problem: RIP Is Not Installing All Possible Equal-Cost Paths-Cause: maximum-path Command Restricts RIP from Installing More Than One Path. Debugs and Verification. Solution. Troubleshooting RIP Routes Advertisement. Problem: Sender Is Not Advertising RIP Routes. Sender Is Not Advertising RIP Routes-Cause: Missing or Incorrect network Statement. Debugs and Verifications. Solution. Sender Is Not Advertising RIP Routes-Cause: Outgoing Interface Is Down. Debugs and Verification. Solution. Sender Is Not Advertising RIP Routes-Cause: distribute-list out Is Blocking the Route. Debugs and Verification. Solution. Sender Is Not Advertising RIP Routes-Cause: Advertised Network Interface Is Down. Debugs and Verification. Solution. Sender Is Not Advertising RIP Routes-Cause: Outgoing Interface Is Defined Passive. Debugs and Verification. Solution. Sender Is Not Advertising RIP Routes-Cause: Broken Multicast Capability (Frame Relay). Debugs and Verification. Solution. Sender Is Not Advertising RIP Routes-Cause: Misconfigured neighbor Statement. Debugs and Verification. Solution. Sender Is Not Advertising RIP Routes-Cause: Advertised Subnet Is VLSM. Debugs and Verification. Solution. Sender Is Not Advertising RIP Routes-Cause: Split Horizon Is Enabled. Debugs and Verification. S…

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