28 Jul
1993
28 Jul
'93
4:39 p.m.
A recent posting on comp.dcom.cisco suggested that you can't have a 7-bit subnet. For example, 192.239.0.0 255.255.254.0 should be equal to two class C networks, but the two "subnets" would be the all zeros and the all ones subnets. Apparently this goes against the Host Requirments RFC. Would this be a vaild CIDR route? Thanks.... Eric, As I replied privately, I believe this will work with CIDR "supernetting" because no "all-nets" broadcast addresses are defined. This issue may be more sticky as we move toward a truely classless addressing plan, though - consider a CIDR block which is carved out of a "class A" network, for example... Anyone else care to comment? --Vince