> You may like to know that 10.0.0.0 is a class A network, so > you can legally > use a netmask of 255.0.0.0 and a broadcast of 10.255.255.255 > without any Nope, 10.0.0.0 is not a class A network anymore! 10.0.0.0 is just a single address out of for example 8.0.0.0/6. CIDR has been around since 1993. See RFC1519. 10.0.0.0/8 is one of the three CIDR blocks in RFC 1918 space. (10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16)
Clueful people around here, have silently agreed to say /8, /16 and /24 instead of class X, because classes do not only mean prefix length but also ip address range. For example "Class A address" once ment any ip addresses in the range from 1.0.0.0 to 126.255.255.255. "Class A network" ment any of the networks 1.0.0.0/8 to 126.0.0.0/8 with a mask of 255.0.0.0. Have fun, Boyan Krosnov, CCIE#8701 http://boyan.ludost.net/ Just another techie speaking for himself -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]