Re: What is the most standard subnet length on internet

[bmanning () vacation karoshi com]

On Fri, Dec 19, 2008 at 02:40:47AM +0000, l l9l
 wrote:
> However, what I am really wondering is what is the most standard subnet length that always can be guaranteed through 
> Internet. less than /24 bit ?

        while one can get away w/ /24s (if that is all one has) for many places,
        I suspect that there will be increasing pressure to drop more specific
        /24s as folks routing tables grow.

        your question, "...length that can be guaranteed through the Internet." 
        argues for fairly short netmasks, e.g.  a /16 is likley to be accepted
        by most folks while very short masks, e.g.  /8 or smaller are likly to
        be seen with some level of consideration since so very few prefixes of 
        that size are likely to be origin-sourced (often proxy aggregates from
        transit parties)...

        as others have pointed out - this "acceptable" value is fluid, changing 
        over time and variable between ISPs.  Creating a static policy is likely
        to be flawed.

--bill (crawling out from under his rock, blinking in the bright lights)