Path: utzoo!utgpu!watmath!clyde!att!ucbvax!A.ISI.EDU!CERF From: CERF@A.ISI.EDU Newsgroups: comp.protocols.tcp-ip Subject: re: Running out of Internet addresses? Message-ID: <[A.ISI.EDU]29-Nov-88.10:57:22.CERF> Date: 29 Nov 88 15:57:00 GMT References: <8811281821.AA00300@bel.isi.edu> Sender: daemon@ucbvax.BERKELEY.EDU Organization: The Internet Lines: 16 Jon, The way I read it, there are 127 possible class A nets, 16,383 class B nets, roughly 2M+ class C nets, and a bunch (2**28 - 1) of broadcast addresses. The large number of class C nets available should have been sufficient, but we are experiencing some difficulty dealing with large numbers of nets at the IP gateway level (table and routing update sizes). Subnetting works better with class B network format, because there is some room for subnet and host address space. Reparsing the class C address space might be a helpful step towards making more nets effectively available. Vint