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Overview/Description In routing environments, Enhanced Interior Gateway Routing Protocol (EIGRP) offers benefits and features over historical distance-vector routing protocols such as Routing Information Protocol version 1 (RIPv1). These benefits include rapid convergence, lower bandwidth utilization, and multiple routed protocol support besides IP. As an administrator, understanding the EIGRP commands used to configure a router is essential, especially during initial configuration or routing protocol migration. EIGRP can also operate over various underlying network technologies – Ethernet...
Overview/Description Configuring Open Shortest Path First (OSPF) in today's networks is an important skill to have as a network administrator. You will need to understand the primary configuration commands for single-area and multiarea OSPF designs, and the commands used to verify configurations. OSPF presents some design limitations, but offers up solutions for each. Scalability, improved CPU and memory utilization, and the ability to mix small routers with large routers are all benefits of using proper route summarization techniques which is a key feature of OSPF. An OSPF network can scale...
Overview/Description Policy-based routing allows administrators to route traffic along specific paths according to their needs and gives you greater flexibility in determining traffic patterns and best routes. Sometimes, simple destination-based routing is not sufficient, so in these cases you may route packets based on source address, protocol type, or application type so that they can optimally shape traffic patterns. As an administrator, understanding the collection of tools, or set of commands, that are used to manipulate the routing protocol forwarding table, and bypass the default...
Overview/Description The convergence of voice, video, and data has not only changed the conceptual network models but has also affected the way that networks support services and applications. Planning routing services to support requirements requires an understanding of the Cisco Enterprise Architectures and how they align with the traditional three-layer hierarchical network model. Understanding of the network traffic moving throughout the architecture is also important. To create an implementation plan, you must have detailed network information, tools, resources, and a work plan. By...
Overview/Description Open Shortest Path First (OSPF) is one of the most commonly used IP routing protocols in today's networks. It is an open standard that is used by both enterprise and service provider networks. OSPF has several functions and five packet types to enable all OSPF information flow between routers. OSPF areas may be made up of different types of network links and it is vital that you know which ones are being used in order to properly configure OSPF. It is equally important to note that OSPF pays special attention to different network types, such as point-to-point and...
Overview/Description When you are migrating to a VoIP network, all network requirements, including power and capacity planning, must be examined so that voice is seamlessly integrated into the existing network. IP telephony services provided over the campus infrastructure must have mechanisms set in place to differentiate traffic types and to offer priority processing to delay sensitive voice traffic. Congestion avoidance techniques, quality of service (QoS), and high availability also need to be implemented to ensure an optimal flow throughout the network. This course covers how to plan...
Overview/Description Over the last 50 years, businesses have achieved improving levels of productivity and competitive advantages through the use of communication and computing technology. Over the past 20 years the enterprise campus network has evolved, becoming a key element in this business computing and communication infrastructure. The increasing complexity of business and network requirements creates an environment where a fixed model no longer completely describes the set of capabilities and services that constitute the campus network today. The Cisco Life-cycle Services model uses a...
Overview/Description Businesses and consumers that rely on intranet and Internet services for their mission-critical communications require and expect their networks and applications to be continuously available to them. A network with high availability provides an alternative means by which all infrastructure paths and key servers can be accessed at all times. It is important for you as a Cisco administrator to know how to implement high availability using Cisco IOS software. Features such as Hot Standby Router Protocol (HSRP) provide Layer 3 redundancy to network hosts. Virtual Router...
Overview/Description A network with high availability provides an alternate means of allowing constant access to all infrastructure paths and key servers. High availability is not only about adding redundant devices. It also implies planning with an eye on where the points of failure occur, and to design the network so that these points of failure can be compensated for. As a Cisco administrator it is important for you to have the knowledge required to implement a highly available network. This course covers how to evaluate the uses, requirements, benefits, and performance expectations for...
Overview/Description Multiple active paths between switches can cause loops in the network topology. This can cause duplication of frames being forwarded. To prevent loops while providing path redundancy, you can use Spanning Tree Protocol (STP). One limitation of the traditional Spanning Tree Protocol (STP; IEEE 802.1D) is the convergence delay after a topology change. In response, several enhancements were made to improve this convergence time by adding specific Cisco features to the original 802.1D protocol, and by creating new protocols that are faster or more efficient. This course...

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