VLSM with EIGRP

R1 Configuration !!!!

R1>en
R1>enable
R1#configure terminal
R1(config)#interface fastEthernet 0/0
R1(config-if)# ip address 172.0.1.65 255.255.255.248
R1(config-if)#no shut

PPP Of CHAP Authentication

Server

Router>enable
Router#configure terminal
Router(config)#hostname R1
R1(config)#interface serial 1/0
R1(config-if)#encapsulation ppp
R1(config-if)#ppp authentication pap

EIGRP Redestribution of Different AS Number

R1 Configuration !!!!!

R1>enable
R1#configure terminal
R1(config)#interface ethernet 0/3/0
R1(config-if)#ip address 100.100.100.254 255.255.255.0

EIGRP on Cisco Router (Single AS)

R1 Configuration!!!!!

R1>
R1>enable
R1#configure terminal
R1(config)#interface ethernet 1/0
R1(config-if)#ip address 200.200.200.1 255.255.255.252