A, Honne Gowda (Honne) wrote:
By convention or standard IP address are classiffied like Class A(0-127),Class B(128-191) class C(192-223),class D(224-239) and Class E( 240-247)..
The concept of network classes with corresponding fixed-length netmasks is obsolete; see RFCs 1517-1519 for information about Classless Inter-Domain Routing (CIDR).
Today, network addresses are always specified together with the length of their netmask, like 10/8 (meaning the network 10.0.0.0 - 10.255.255.255) or 64.27/26 (64.27.0.0 - 64.27.0.63).
My question here is : are the following IP addresses valid for assignment.. If not why?
0.0.0.0
This address is usually seen as symbolic for "this network" and will not work for other purposes. This includes hosts addresses in 0/8 accordingly. See RFC 3330.
10.0.0.0
10/8 is reserved for private networks (RFC 1918).
126.0.0.0
126/8 is reserved by IANA, presumably subject to allocation.
192.0.0.0
192.0/16 is reserved by IANA and subject to allocation; higher addresses in 192/8 are allocated.
Regards, Juergen.
-- Juergen Nickelsen <juergen.nickelsen@Netzwert.AG> Netzwert AG * An den Treptowers 1 * D-12435 Berlin Fon +49.30.5900.80-1112 * Fax +49.30.5900.800-700 - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
