RTA# interface serial 0 no ip addres. encapsulation frame-relay nterface serial0. I point-to-point ip address128.213.63.6255.25.252.0 frame-relay interface-dlci 20 erface seria10. 2 pe ip address I28.213.64625.255.252.0 frame-relay interface-dlci 30 router ospf10 netork l28.213.0.00.0.255.255 area l RTB# interface serial0 no ip address encapsulation frame-relay interface serial0. I point-to-point ip address128.213.63.5255.255.252.0 frame-relay interface-dlci 40 interface serial I p address I28.212..1255.255.255.0 ospf 10 netork l28.213.0.00.0.255.255 area l netork l28.212.0.00.0.255.255amea0 (2)Select interface network type ip ospf network broadcast non-broadcastpoint-to-multipointy RTa#. interface loopback 0 ip address200.200.10.1255.255.25.0 interface serial 0 ip addres128.213.10.1255.255.252.0 encapsulation frame-relay ip ospf netw ork point-to-multipointRTA#: interface serial 0 no ip address encapsulation frame-relay interface serial0.1 point-to-point ip address 128.213.63.6 255.255.252.0 frame-relay interface-dlci 20 iterface serial0.2 point-to-point ip address 128.213.64.6 255.255.252.0 frame-relay interface-dlci 30 router ospf 10 network 128.213.0.0 0.0.255.255 area 1 RTB#: interface serial 0 no ip address encapsulation frame-relay interface serial0.1 point-to-point ip address 128.213.63.5 255.255.252.0 frame-relay interface-dlci 40 interface serial 1 ip address 128.212.1.1 255.255.255.0 router ospf 10 network 128.213.0.0 0.0.255.255 area 1 network 128.212.0.0 0.0.255.255 area 0 (2) Select interface network type: ip ospf network {broadcast|non-broadcast|point-to-multipoint} 例： RTA#: interface loopback 0 ip address 200.200.10.1 255.255.255.0 interface serial 0 ip address 128.213.10.1 255.255.252.0 encapsulation frame-relay ip ospf network point-to-multipoint