... summary-address eigrp command Router(config-if)#ip summary-address eigrpautonomous-system-number ip-address mask administrative-distance 8. The EIGRP hello interval should be tuning to 10 ... these routers. To turn off auto-summarization, use the following command : Router(config-router)#no auto-summary Note : - Automatic summarization may not be ... EIGRP hello interval should be tuning to 10 seconds R1(config-if)#ip hello-interval eigrp 100 0 109 .To verify operation of EIGRP ,the commands should be issued : ...