R1(config)#username R2 password titok R1(config)#int s0/0/0 R1(config-if)#encapsulation ppp R1(config-if)#ppp authentication pap R1(config-if)#ppp pap sent-username R1 password titok R1(config-if)#
R2(config)#username R1 password titok R2(config)#int s0/0/0 R2(config-if)#encapsulation ppp R2(config-if)#ppp authentication pap R2(config-if)#ppp pap sent-username R2 password titok