How many IP address in 197.210.152.14/30
If im correct, its just 1 > 197.210.152.14 Gateway is 197.210.152.13
How many IP address in 197.210.152.14/30
If im correct, its just 1 > 197.210.152.14 Gateway is 197.210.152.13
The /30
network that include the 197.210.152.14
IP address is 197.210.152.12/30
The /30 part indicate that there's 2 bits that define the host portion of the address (32-30 = 2). So you have 2^2 = 4 available IP addresses:
197.210.152.12
197.210.152.13
197.210.152.14
197.210.152.15
The first address of a subnet is reserved, it is the network address
. The last address is also reserved, it is the broadcast address
.
This leave you 2 usable addresses: 13 and 14. So you use one for your equipment and the other one is the ISP gateway address.
Note that, to avoid wasting IP addresses, a point to point link can be configured with a /31 network, in which there's only 2 addresses. This is an exception, defined in RFC3021 in which the addresses that are normally used for network and broadcast can be configured on hosts.
For information a point to point link can also be configured as unnumbered
, in this case you route the traffic trough interface rather than IP.
197.210.152.13
and197.210.152.14
. – Ron Maupin Mar 30 '17 at 13:43