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1)interface fa0/0
2)ip address -DGM-SM
3)no shut
4)do wr
5)exit

first enter to the router then 
1)no then click to enter
2)en or enable then click to enter
3)config then click to enter

rouetr-1 commend
interface fa1/0
ip address 120.40.40.254 255.0.0.0
no shut
do wr
exit

router-2 commend
interface fa1/0
ip address 178.30.30.254 255.255.0.0
no shut
do wr
exit

for router 01 (se2/0)
interface se2/0
ip address 199.56.56.5 255.255.255.0
clock rate 64000
no shut
do wr
exit

for router 02 (se3/0)
interface se3/0
ip address 199.56.56.6 255.255.255.0
clock rate 64000
no shut
do wr
exit

ip route 178.30.0.0 255.255.0.0 199.56.56.6
exit

ip route 120.0.0.0 255.0.0.0 199.56.56.5
exit