All what's mentioned here is absolutey right, however use of /31 is allowed
in routing tables, for example.
Assuming the case when 2 routers are dual homed to each other serial serial
0 & serial 1 of each.
You want all the traffic to use serial 0 except 2 specific hosts (mission
critical servers) to use serial 1
The way to achieve this is as follows:
ip route 192.168.100.0 255.255.255.0 serial 0
ip route 192.168.100.20 255.255.255.254 serial 0
in that case if you check the routing table, you'd find a 192.168.100.20/31
entry :-)
the same applies of course for /32
I'm not saying that this is so common, but i'm just saying that you might
find a /31 address
Regards
Shahir
""Jeff McCoy"" <[EMAIL PROTECTED]> wrote in message
94mova$dik$[EMAIL PROTECTED]">news:94mova$dik$[EMAIL PROTECTED]...
>
> Michael...
> /30 = 4 address (1st is network number, 2 & 3 host ip's, 4th is broadcast
> address)
> /31 = 2 address (1st is network number, 2nd is broadcast address)
> no host ip's...this is not useful..
> /32 = 1 address (1 host address) i use this for loopbacks
>
>
> ""Neil Schneider"" <[EMAIL PROTECTED]> wrote in message
> 94mool$d33$[EMAIL PROTECTED]">news:94mool$d33$[EMAIL PROTECTED]...
> > AFAIK you can only go as far as /30.
> >
> > Neil Schneider
> >
> > <[EMAIL PROTECTED]> wrote in message
> [EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> > >
> > >
> > > Hello good guys of the group, can anyone with the knowledge of ip/31,
> help
> > me?
> > > please.
> > >
> > > I need to know what it is use for, and how it works, pls.
> > >
> > > Thanks in advance,
> > >
> > > Michael Taiwo.
> > >
> > > _________________________________
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