Jak zadat atypickou sit. Masku

[Michal.Vymazal na deltax.cz]

> Od:     Martin Mačok <martin.macok na underground.cz> 24.01.2001 10:58:38
>
> Podlozim to temito citacemi z RFC 950:
>
> *
>
>      For example, the Internet address might be interpreted as:
>
>         <network-number><subnet-number><host-number>
>
>      where the <network-number> field is as defined by IP [3], the
>      <host-number> field is at least 1-bit wide, and the width of the
>      <subnet-number> field is constant for a given network.  No further
>      structure is required for the <subnet-number> or <host-number>
>      fields.  If the width of the <subnet-number> field is zero, then
>      the network is not subnetted (i.e., the interpretation of [3] is
>      used).
>
> *
>
> Z cehoz jsem usoudil, ze maska je jen "delitko", ktere rika "nalevo je
> sit" a "napravo je host" a musi (nebo melo by (might)) byt kontinualni
> - tedy nesmi se se obe casti nejak "prolinat".
>
> Nicmene v examples se vyskutuje i:
>
> *
>
>   3.  A Class C Network Case (illustrating non-contiguous subnet bits)
>
>      For this case, assume that the requesting host is on class C
>      network 192.1.127.0, has address 192.1.127.19, that there is a
>      gateway at 192.1.127.50, and that on network an 3-bit subnet field
>      is in use (01011000), that is, the address mask is 255.255.255.88.
>
> *
>
> Coz situaci mirne komplikuje a budu rad, kdyz se odtedka budou k
> situaci vyjadrovat jen ti, kteri OPRAVDU VEDI, JAK TO JE. (Ja uz se do
> toho michat nebudu).


V podstate to neodporuje popisu netmask z RFC 1024, ale to me moc
      neuklidnilo:-) Vypada to na nejaka "zadni" vratka pro pozdejsi
      vyuziti. Faktem je, ze v tomto prikladu se hovori o address mask a ne
      o netmask. Otazka je, zda jsou to totozne vyrazy.



Michal Vymazal