http://www.mynetworkdictionary.com Resources for Networkers Sun, 06 Sep 2009 15:41:10 +0000 http://backend.userland.com/rss092 en Route summarization or aggregation,  is a mechanism used to design networks that are more flexible and perform better. With route summarization  or aggregation, in a hierarchical routing infrastructure, one route in a routing table represents many routes. Although some routing protocols summarize only at the boundaries of major network numbers, ... http://www.mynetworkdictionary.com/2009/05/route-or-aggregation/ By Diane Teare, Catherine Paquet. Published by Cisco Press. Series: Self-Study Guide. Description:Building Scalable Cisco Internetworks (BSCI) , Third Edition is a    Cisco authorized, self-paced learning tool for CCNP preparation. This book teaches readers to design, configure, maintain, and scale routed networks.The book covers routing principles of both distance vector and link-state ... http://www.mynetworkdictionary.com/2009/05/building-scalable-cisco-internetworks-bsci-2/ By:Richard Froom, Balaji Sivasubramanian, Erum Frahim. Published by: Cisco Press. Series: Self-Study Guide. Description: * Provides a thorough introduction to campus switched network construction, support, and security * Explains the fundamentals of multilayer switched network design and specific design features such as Spanning Tree Protocol, quality of service (QoS), and high availability * Covers virtual LAN ... http://www.mynetworkdictionary.com/2009/05/builder-cisco-multilayer-switch-network/ DHCP snooping is a security feature for filtering untrusted DHCP messages, and can protect clients on the network from peering up with an unauthorized DHCP server. When enabled, it builds a table of MAC address, IP address, lease time, binding type, and interface information . There is also an important ... http://www.mynetworkdictionary.com/2009/04/dhcp_snooping/ CCNP ONT Official Exam Certification Guide by Amir S. Ranjbar - CCIE No. 8669 Publisher: Cisco Press Pub Date: May 21, 2007 Print ISBN-10: 1-58720-176-3 Print ISBN-13: 978-1-58720-176-9 This  official study guide helps you master all the topics on the CCNP ONT exam, including Implementing a voice-over-IP (VoIP) network Implementing QoS on converged networks Specific IP QoS mechanisms for ... http://www.mynetworkdictionary.com/2009/03/ccnp-ont-of%ef%ac%81cial-exam-certi%ef%ac%81cation/ It is important to note that the ip helper-address command does not just forward DHCP requests. In fact, although you can configure it to forward any UDP broadcast you want, by default it will forward UDP broadcast packets for several different UDP ports to the specified address. In some cases, ... http://www.mynetworkdictionary.com/2009/03/limiting-the-impact-of-ip-helper-addresses/ The traditional role of routers in DHCP has been simply to act as a proxy device.DHCP proxy function is still the most common for routers. Initial DHCP request comes from a client that typically doesn’t have an IP address, it must find the server using a Layer 2 broadcast. So, if ... http://www.mynetworkdictionary.com/2009/03/configure-router-to-pass-dhcp-requests-from-local-clients-to-a-centralized-dhcp-server/ A broadcast is a data packet that is destined for multiple hosts. Broadcasts can occur at the data link layer and the network layer. Data-link broadcasts are sent to all hosts attached to a particular physical network. Network layer broadcasts are sent to all hosts attached to a particular logical ... http://www.mynetworkdictionary.com/2009/01/udp-broadcast-flooding/ 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 ... http://www.mynetworkdictionary.com/2009/01/rip-and-ospf-redistribution/ The Routing Information Protocol (RIP) is a dynamic routing protocol used in local and wide area networks. As such it is classified as an interior gateway protocol (IGP) using the distance-vector routing algorithm. It was first defined in RFC 1058 (1988). The protocol has since been extended several times, resulting ... http://www.mynetworkdictionary.com/2009/01/windows-2003-server-to-exchange-rip-routes-with-a-cisco-router/