#Bit-Count
R1#terminal ip netmask-format bit-count
R1#show interface fa 0/0 | in Internet address
Internet address is 11.11.11.1/24
R1#show ip route | in subnet
10.0.0.0/24 is subnetted, 5 subnets
11.0.0.0/24 is subnetted, 1 subnets
#Decimal
R1#terminal ip netmask-format decimal
R1#show ip route | in subnet
10.0.0.0 255.255.255.0 is subnetted, 5 subnets
11.0.0.0 255.255.255.0 is subnetted, 1 subnets
R1#show interface fa 0/0 | in Internet address
Internet address is 11.11.11.1 255.255.255.0
#Hexadecimal
R1#terminal ip netmask-format hexadecimal
R1#show interface fa 0/0 | in Internet address
Internet address is 11.11.11.1 0xFFFFFF00
R1#show ip route | in subnet
10.0.0.0 0xFFFFFF00 is subnetted, 5 subnets
11.0.0.0 0xFFFFFF00 is subnetted, 1 subnets