private void SplitSubnets()
{
if (Mask == null || Ip == null)
{
return;
}
var buffer = new StringBuilder();
int requiredbits = GetBits(NetworkCount);
int maskbits = SubnetMask.GetBitLength(Mask);
int outmaskbits = requiredbits + maskbits;
if (outmaskbits > 32)
{
buffer.AppendLine("IPv4 is too small for this");
Output = buffer.ToString();
OnPropertyChanged(() => Output);
return;
}
buffer.AppendFormat("Required additional subnet bits for {0} networks: {1}\r\n", NetworkCount, requiredbits);
buffer.AppendFormat("New netmask: {0}/{1}\r\n", SubnetMask.CreateByNetBitLength(outmaskbits), outmaskbits);
buffer.AppendLine("--------------------------------------------------------------------------------------");
buffer.AppendLine();
uint tmp = Ip.GetUint();
int shift = 32 - outmaskbits;
for (uint i = 0; i < NetworkCount; i++)
{
uint sh = i << shift;
uint val = tmp + sh;
var addr = new IPAddress(0);
addr = addr.SetUint(val);
buffer.AppendFormat("Subnet {0,-4} Network adress: {1,-15} Broadcast Adress: {2,-15}\r\n",
i,
addr,
addr.GetBroadcastAddress(SubnetMask.CreateByNetBitLength(outmaskbits)));
}
Output = buffer.ToString();
OnPropertyChanged(() => Output);
}