cisco ccna 200 301 full course for networking basics

cisco ccna 200 301 full course for networking basics.For nonfeasible successor routes ,EIGRP is concerned that the router that advertises them may be part of a routing loop. For this reason, EIGRP enters an active state to further verify these routes with its neighbors. The neighbors will look at the information in their topology tables and provide the requester with information about these alternative routes. The terms passive and active can be misleading: passive means that a valid alternative route exists and can be added to the routing table immediately without contacting the neighbor that advertised the alternative route, while active means that an alternative route exists, but it may or may not be valid.Exam Essentials When a successor route is not available and there is no feasible successor route in the topology table, an EIGRP multicast query is sent to all neighbors that advertise an alternative path to determine if they have a valid path (successor route) to the destination network.Authentication Destination 20.0320.3 Configuring HGRPEIGRP is as simple to configure as RIPv2.Router(config)# router eigrp autonomous_system_# Router(config-router)# network IP_network_# [subnet_mask]As you can see from the above commands, enabling EIGRP is easy: just enter the autonomous system ( AS) number and use the command network to specify the interface that will participate in EIGRP. The AS numbers of the neighboring routers must be the same, otherwise the adjacency will not be established. Note that the specified network number is the classified network number, although EIGRP is classless. Alternatively, you can use a subnet mask to qualify the network number to add only some of the subnets in the classified network to the EIGRPASoExam Essentials You must specify the AS number when you configure EIGRP. The AS numbers of the neighboring routers must be the same, otherwise the adjacency cannot be established. Although EIGRP is classless, it is configured as a classification protocol when the network number is specified in the command network. For example, network172.16.0.0 will contain the interfaces in subnets 172.16.1.0/24 and 172.16.100.0/24. ,172.16.1.0/24 10.1.1.0/24