At 03:49 PM 1/24/01, Jim Dixon wrote:
>Wouldn't that make it layer 2?
>A bridge then?
>Broadcast and don't care if I get a response?
Bridges don't broadcast. They send multicasts for the spanning-tree
algorithm, but that's not relevant. They forward broadcasts (and other
frames), but that's not relevant either. We're talking about a single
subnet that has two devices. The two devices probably aren't bridges. What
would be the point of connecting two bridges together in one subnet that
allows only two devices?
Whether I get a response or not depends on what upper layer I'm using. For
example, I could use ping to send a message from the first device
(10.0.0.0/31) to the second device (10.0.0.1/31) on a point-to-point link.
I should get a response (assuming the operating system would let me
configure these addresses to start with.)
If it's two routers on the ends of this point-to-point link, they are
mostly just forwarding traffic on behalf of other stations. The IP
addresses of the routers themselves are irrelevant in that case. In fact, I
could use ip unnumbered, but then I couldn't ping the point-to-point
interfaces, which makes management a bit harder.
>Since I can't tell if anyone
>is actually there, I just know that
>someone is sending me broadcasts from somewhere on this link.
What does "somewhere on this link" mean? It's a point-to-point link.
There's only one other thing besides myself on the link.
If I yell into a room that has only one person in it, "Hello, I'm trying to
reach everyone in this room," won't I get an answer? Does it matter that I
wasn't more precise? No.......
>Correct me if my thinking is in
>need of more coffee.
You need more coffee. (or maybe less??) &;-)
Priscilla
P.S. Please don't send messages directly to me. Please address them to the
group. Thanks.
>Jim :)
>
>-----Original Message-----
>From: Priscilla Oppenheimer [mailto:[EMAIL PROTECTED]]
>Sent: Wednesday, January 24, 2001 3:17 PM
>To: Jeff McCoy; [EMAIL PROTECTED]
>Subject: Re: slash 31 address
>
>
>Yes, but on a point-to-point link, so what if you use the network number
>and broadcast address to identify the two nodes? If one station sends to
>the broadcast address it's not a problem, there's only one other station
>anyway! I think /31 should be allowed on point-to-point links.
>
>Priscilla
>
>At 08:22 AM 1/24/01, Jeff McCoy wrote:
>
> >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.
> > > >
________________________
Priscilla Oppenheimer
http://www.priscilla.com
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