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New PDF release: CCIE: Cisco Certified Internetwork Expert Study Guide

By John Swartz

ISBN-10: 078212657X

ISBN-13: 9780782126570

Are you prepared to take on the main hard computing device examination? This booklet will give you the knowledge you will need to understand for the Cisco qualified Internetworking professional qualification examination. All issues incorporated in Cisco's examination blueprints are coated in-depth. Hands-on workouts and 1000's of tough evaluate questions offers you the virtue you would like as you pursue the holy grail of networking certifications.

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Extra resources for CCIE: Cisco Certified Internetwork Expert Study Guide

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Bridging By using source-route bridging and integrated routing and bridging, you can integrate your older networks and protocols that do not support routing into the new internetwork. Accessible but Secure Access-layer routers must both be accessed and be used to connect to a variety of WAN services, while maintaining security to keep hackers out. com Fault-Tolerant Topologies 15 The following Cisco IOS features support these requirements: Dedicated and switched WAN support You can create a direct connection with Cisco routers using basic or digital services (a T1, for example).

The Distribution Layer The distribution layer is sometimes referred to as the workgroup layer and is the communication point between the access layer and the core. com Hierarchical Topologies 9 WAN access and to determine how packets can access the core, if needed. The distribution layer must determine the fastest way to user requests for services, for example, the path that a file request packet uses when it is forwarded to a server. After the distribution layer determines the best path, it forwards the request to the core layer.

The best way to reduce the bandwidth usage is to reduce the amount of update traffic on the LAN that will be sent over your WAN. The Cisco IOS features available to help reduce bandwidth usage are: Access lists These are used to permit or deny certain types of traffic from entering or exiting a specific router interface. Access lists can stop basic traffic, broadcasts, and protocol updates from saturating a particular link. TCP/IP, IPX, and AppleTalk can all be filtered extensively. Snapshot routing Commonly used for ISDN connections when running Distance Vector protocols, snapshot routing allows routers to exchange full Distance Vector routing information at an interval defined by the administrator.

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CCIE: Cisco Certified Internetwork Expert Study Guide by John Swartz


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