book ccna 200-301 exam

book ccna 200-301 exam.Step 3 (Optional) Use the eigrp router-id va/we router subcommand to explicitly set the EIGRP router ID (RID). Step 4 (Optional) Use the ip hello-interval eigq? asn time and ip hold-time eigrp asn time interface subcommands to modify the interface Hello1.2 Basics 203timer and hold timer. Step 5 (Optional) Adjusts the bandwidth and delay using the bandwidth value and delay interface subcommands to affect the metric value calculation. Step 6 (Optional) Use the maximum-paths number and variance multiplier router subcommands to configure support for multiple equivalent routes. Step 7 (Optional) Use the auto-summary router subcommand to enable automatic route summarization at the boundary of a classful IPv4 network. Example W-1 Begin the discussion of configuration with the simplest possible EIGRP configuration. This configuration uses the default values whenever possible. but it enables EIGRP on all interfaces on each router shown in Figure 10-1. all three routers can use the exact same configuration. only two commands are required on each router.Example 10-1 EIGRP Configuration on All Three Routers in Figure 10-1router eigrp 1 network 10.0.0.0This simple configuration uses only the two parameters that the network engineer must select: the autonomous system number and the classful network number in the network command. The actual ASN (autonomous system number) is not important, but all routers must use the same ASN in the routereigrp command. for example, in this example, they all use router eigrp1. (Routers with different ASNs will not become EIGRP neighbors.) The valid range for ASNs is 1 to 65535, which is the same as the valid process ID range for the routerospf command. The EIGRPnetwork command allows two syntax options: one with a wildcard mask at the end and one without a wildcard mask, as shown in the network10.0.0.0 command in Example 10-1. No wildcard mask is listed; it must list a classful network (a class A, B, or C network number). When the configuration is complete, this command tells the router to do the following: . Find the interfaces on this router whose addresses belong to this classful network.Enable EIGRP on these interfaces. once enabled, EIGRP begins to advertise the subnet connected to the interface. It also begins sending Hello messages and listening for incoming Hello messagesmessages, trying to form neighbor relationships with other EIGRP routers. Tip: Interestingly, on a real router, you can type an EIGRP network number command and use a dotted decimal number that is not a classful network number. In this case, IOS will not issue an error message. However, IOS converts the number you enter to the classful network number where that number resides. For example, I0S modifies the network 10.1.1.1 command to network 10.0.0.0.(1) a and c (2) c and d (3) d (4) c (5) c (6) a (7) b204 Chapter 10 Implementing IPv4 EIGRP