Subnet mask 255.255.255.0 - Masks

Jul 24, 2017 · (In reply to yangfei from comment #0) > Description of problem: > > Setting IP address by nmtui, the 255.255.255.255 netmask by default, I think > this is not make sense. > I expect the netmask according to the IP subnet to add, for example, > 192.168.0.0/24 the default netmask is 255.255.255.0, and 172.16.0.0/16, the > default netmask is 255.255.0.0 I don't think that choosing the prefix of In IPv4, the subnet mask 255.255.255.0 is 32 bits and consists of four 8-bit octets. The address: 10.10.10.0 subnet mask 255.255.255.0 means that the subnet is a range of IP addresses from 10.10.10.0 - 10.10.10.255. The prefix-length in IPv6 is the equivalent of the subnet mask in IPv4. Imagine you have a subnet of 192.168.0.0 with a mask of 255.255.255.0 Now you know that you have 254 hosts available. Why? Because the HOST portion of the subnet in bold 192.168.0.0 equal the formula 2^8 - 2 = 254 So your valid hosts would be 192.168.0.1 to 192.168.0.254 The network address is: 192.168.0.0 The broadcast address: 192.168.0.255 To configure a 24-bit mask for the interface e3a that you have already configured, enter the following command: ifconfig e3a netmask 255.255.255.0. To change the subnet mask for an interface that has been configured with a primary and an alias address, enter the following command for each IP address: ifconfig interface_nameIP address netmask mask The ifconfig command can change both the ip address and netmask of a network interface: ifconfig eth0 10.10.10.10 netmask 255.255.255.0 Is it possible to change the netmask of the network interface

IP Subnet Calculator. This calculator returns a variety of information regarding Internet Protocol version 4 (IPv4) and IPv6 subnets including possible network addresses, usable host ranges, subnet mask, and IP class, among others.

CIDR Conversion Table Feb 21, 2005 networking - What's the best way to convert from network For example, if I have a network spec like 172.20.10.0/24, "24" is the bitcount. What's the best way to convert that to a netmask like 0xffffff00 ?

Sep 17, 2009

networking - What's the best way to convert from network For example, if I have a network spec like 172.20.10.0/24, "24" is the bitcount. What's the best way to convert that to a netmask like 0xffffff00 ?