ccna 200 301 official cert guide volume 3

ccna 200 301 official cert guide volume 3.EIGRP Load BalancingEIGRPV6 and EIGRPV4 use the exact same concepts of equal- and unequal-overhead load balancing, and the exact same configuration commands and syntax. However, EIGRPV6 has its own configuration setting values that can be set with the maximum-paths and variance commands in EIGRPV6 configuration mode. In EIGRPv4 configuration mode, EIGRPv4 has setting values that are separate from each other, even if the same commands are used.For example, suppose that in a dual-stack network, routers use EIGRPv4 and EIGRPV6. A network engineer might choose the same variance and maximum-paths setting values for both routing protocols. However, to illustrate the difference, assume that the engineer chooses different settings as follows.EIGRPv4: up to 2 routes with a variance of 3 for routes with different overheads. EIGRPV6: up to 5 routes with a variance of 4 for routes with different overheads.13.2 Basics 377 Example 18-4 illustrates how to set different setting values for these two different routing processes. Note, however, that these commands happen to use the same syntax. Example 18-4 Setting the Load Balancing Parameters for Each Routing ProcessRl# configure terminal Enter configuration commands, one per line. end with CNTL/Z. !First, configure the settings for IPv4 Rl(config)# router eigrp 10 Rl(config-router)# maximum-paths 2 Rl(config-router)# variance 3 !Next, configure the similar settings for IPv6 Rl(config-router)# ipv6 router eigrp 11 Rl(config-rtr)#maximum-paths 5 Rl(config-rtr)#variance 4 Rl(config-rtr)# AZ Rl#EIGRP TimerEIGRPv6 and EIGRPv4 use the same Hello and timer concepts. To set these values differently in each routing process, IOS provides us with the EIGRPv6 and EIGRPV4 commands with slightly different syntax. the EIGRPv6 command uses the keyword ipv6, not ip. Otherwise, the syntax of EIGRPv6 will be exactly the same as in the EIGRPv4 command.Example 18-5 gives an example of changing the Hello timer for EIGRPV4 and EIGRPV6 so that the different commands are displayed side-by-side. For EIGRPv4, the Hello timer is set to 6 seconds, while EIGRPv6's is set to 7 seconds.Example 18-5 Setting the Hello Timer for EIGRPV4 and EIGRPV6