On Sat, 2004-05-08 at 10:05, Jamie Cadorette wrote: > >> I'm' not a network expert, and others will probably > correct me if I am wrong, but I think it is unusual or > even plain wrong to have an IP address (inet addr) > ending in .0. The last number should be between 1 and > 254. Did you set this yourself, or was it allocated > by DHCP? << > > This is correct. With an IP address, a hostid of all > zeroes (ending in .0) and a hostid of all ones (ending > in .255) are both reserved. A valid IP should end with > a number from 1 through 254. It has been my experience > that the number 1 is usually seen on DNS servers and > routers. > > - Jamie It all depends on the subnet mask which defines what portion of the IP address represents the network and what portion represents the host addresses. If your network uses a 16 bit subnet mask there can be several host address that end in 0 and 255. Very strange looking but perfectly valid. In the case described above they have a 24 bit subnet mask, in that case you are correct the address ending in 0 is the network and 255 is the broadcast. -- Scot L. Harris <webid@xxxxxxxxxx>
