Download Building Scalable Cisco Internetworks. Student Guide by Cisco Systems PDF

By Cisco Systems

This module explains why it can be crucial to control routing info. in the course of direction redistribution among IP routing domain names, suboptimal routing can take place with out manipulation. There also are instances while routing details could waste bandwidth on a router interface simply because routing info isn't needed.This module presents an outline and examples of how to enforce the controls defined above with Cisco structures units.

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2006 Cisco Systems, Inc. , for the sole use by Cisco employees for personal study. The files or printed representations may not be used in commercial training, and may not be distributed for purposes other than individual self-study. Configuring EIGRP 2-15 Calculating the EIGRP Metric This topic describes how the EIGRP metric is calculated. EIGRP Metric Calculation • By default, EIGRP metric: Metric = bandwidth (slowest link) + delay (sum of delays) • Delay = sum of the delays in the path, in tens of microseconds, multiplied by 256 • Bandwidth = [107 / (minimum bandwidth link along the path, in kilobits per second)] * 256 • Formula with default K values (K1 = 1, K2 = 0, K3 = 1, K4 = 0, K5 = 0): Metric = [K1 * BW + ((K2 * BW) / (256 – load)) + K3 * delay] • If K5 not equal to 0: Metric = metric * [K5 / (reliability + K4)]: © 2006 Cisco Systems, Inc.

2006 Cisco Systems, Inc. , for the sole use by Cisco employees for personal study. The files or printed representations may not be used in commercial training, and may not be distributed for purposes other than individual self-study. Configuring EIGRP 2-15 Calculating the EIGRP Metric This topic describes how the EIGRP metric is calculated. EIGRP Metric Calculation • By default, EIGRP metric: Metric = bandwidth (slowest link) + delay (sum of delays) • Delay = sum of the delays in the path, in tens of microseconds, multiplied by 256 • Bandwidth = [107 / (minimum bandwidth link along the path, in kilobits per second)] * 256 • Formula with default K values (K1 = 1, K2 = 0, K3 = 1, K4 = 0, K5 = 0): Metric = [K1 * BW + ((K2 * BW) / (256 – load)) + K3 * delay] • If K5 not equal to 0: Metric = metric * [K5 / (reliability + K4)]: © 2006 Cisco Systems, Inc.

For EIGRP to establish a neighbor relationship, all neighbors must be in the same AS. 0/16 participate in the EIGRP routing process. In this case, this includes all four interfaces. 0 is not configured in the EIGRP configuration on router A, because router A does not have any interfaces in that network. 0 © 2006 Cisco Systems, Inc. , for the sole use by Cisco employees for personal study. The files or printed representations may not be used in commercial training, and may not be distributed for purposes other than individual self-study.

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