By Diane Teare
Designing for Cisco Internetwork suggestions (DESGN), moment variation, is a CiscoR-authorized, self-paced studying software for CCDAR starting place studying. This publication will give you the information had to layout firm networks. by way of studying this booklet, you are going to achieve an intensive knowing of designing routed and switched community infrastructures and companies inside of a modular structure. In Designing for Cisco Internetwork recommendations (DESGN), moment version, you are going to research a extensive diversity of community layout rules and guidance. you'll find out about community layout within the context of the Cisco Service-Oriented community structure (SONA) framework and the Cisco company structure. particular subject matters contain campus and information heart infrastructure, distant connectivity, IP addressing layout, routing protocol choice, voice community layout, instant community layout, and together with safeguard on your designs. An ongoing case research plus chapter-ending assessment questions illustrate and support solidify the innovations provided within the ebook. even if you're getting ready for CCDA certification or just are looking to achieve a greater figuring out of community layout rules, you are going to enjoy the starting place details awarded during this booklet. Designing for Cisco Internetwork suggestions (DESGN), moment variation, is a part of a prompt studying course from Cisco that incorporates simulation and hands-on education from licensed Cisco studying companions and self-study items from Cisco Press. to determine extra approximately instructor-led education, e-learning, and hands-on guide provided via licensed Cisco studying companions all over the world, please stopover at www.cisco.com/go/authorizedtraining. Diane Teare is a qualified within the networking, education, and e-learning fields. She has greater than two decades of expertise in designing, enforcing, and troubleshooting community and software program and has additionally been taken with instructing, direction layout, and undertaking administration. She has wide wisdom of community layout and routing applied sciences and is an teacher with one of many greatest licensed Cisco studying companions. * comprehend the Cisco imaginative and prescient of clever networks and the SONA framework * how one can constitution and modularize community designs in the Cisco firm structure * layout simple campus and knowledge heart networks * construct designs for distant connectivity with WAN applied sciences * Create IPv4 addressing schemes * comprehend IPv6 layout * choose the right routing protocol for numerous modules within the Cisco firm structure * layout easy VoIP and IP telephony networks * comprehend instant layout rules * construct defense into your community designs
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Extra info for Designing for Cisco internetwork solutions
The returned MAC address is used as the destination address in the frames that encapsulate the packets of data being routed to the destination IP address. Routing This section examines how routers work and introduces routing tables and routing protocols. Routers work at the OSI model network layer. The main functions of a router are ﬁrst to determine the best path that each packet should take to get to its destination and second to send the packet on its way. Sending the packet out the appropriate interface, along the best path, is also called switching the packet because the packet is encapsulated in a new frame, with the appropriate framing information.
A hub works at Layer 1 and connects multiple devices so that they are logically all on one LAN. Physical Interfaces and Ports The physical connection point on a network device—a hub, switch, or router—is called an interface or a port. Don’t confuse this deﬁnition of port with the application layer port numbers discussed in the “TCP/IP Transport Layer Protocols” section later in this chapter. A hub has no intelligence—it sends all data received on any port to all the other ports. Consequently, devices connected through a hub receive everything that the other devices send, whether or not it was meant for them.
Protocols and the OSI Model 9 Upper Layers—Layers 5 Through 7 From the lower layers’ perspective, the three upper layers represent the data that must be transmitted from the source to the destination; the network typically neither knows nor cares about the contents of these layers. For completeness, the following brieﬂy describes the functions of these layers: ■ The session layer, Layer 5, is responsible for establishing, maintaining, and terminating communication sessions between applications running on different hosts.