Whether we usual use dot-decimal notation to represent network or IP by opposite mask?
10.10.10.0 0.0.0.255 # a network 10.10.10.0 255.255.255.0 # a IP
if we represent a network, we can use
10.10.10.0/24, but how can we represent a IP address of
10.10.10.0 with mask? Is it not
I also sometimes find the
10.10.10.0 0.0.0.255 can represent a network, what's the difference.
Some friend says like the
192.168.2.1/32 can not stand for the networks, but in the route, there obviously regard this as a subnet.
192.168.1.0/24 is variably subnetted, 2 subnets, 2 masks C 192.168.1.0/24 is directly connected, GigabitEthernet0/0/0 L 192.168.1.1/32 is directly connected, GigabitEthernet0/0/0 192.168.2.0/24 is variably subnetted, 2 subnets, 2 masks C 192.168.2.0/24 is directly connected, GigabitEthernet0/0/1 L 192.168.2.1/32 is directly connected, GigabitEthernet0/0/1
/24is an alternative but equivalent method of writing the mask
255.255.255.0, which has 24 ones at the beginning followed by 8 zeros.
0.0.0.255is only used in ACLs, see my answer.