18 Dec
2018
18 Dec
'18
4:13 p.m.
Why do we still have network equipment, where half the configuration requires netmask notation, the other half requires CIDR and to throw you off, they also included inverse netmasks. tir. 18. dec. 2018 20.51 skrev Brian Kantor <Brian@ampr.org>:
/24 is certainly cleaner than 255.255.255.0.
I seem to remember it was Phil Karn who in the early 80's suggested that expressing subnet masks as the number of bits from the top end of the address word was efficient, since subnet masks were always a series of ones followd by zeros with no interspersing, which was incorporated (or independently invented) about a decade later as CIDR a.b.c.d/n notation in RFC1519. - Brian