/31 on 2 interfaces

[Baldur Gislason]

/31 is common practice today. You don't need broadcast on a point-to-point link.
The only broadcast you need is ARP and that's on layer 2.

Baldur

On Tue, May 16, 2006 at 05:55:46PM -0700, John-Mark Gurney wrote:
> Unix-Solutions - Steven wrote this message on Wed, May 17, 2006 at 02:10 +0200:
> > I have 2 servers with both 2x 'em' interfaces in it.
> > I configged a /31 on both interfaces
> > em0 in box 1 = 10.0.0.1
> > em0 in box 2 = 10.0.0.2
> 
> As someone else mentioned even if you did a /31, those addresses aren't
> on the same network...
> 254 & 1 == 0
> 254 & 2 == 2
> 
> Hence different networks.. the other thing is that you can't have a /31
> due to the fact that one ip w/ all the node bits set is the broadcast
> for the network causing other sorts of troubles...  the smallest usable
> network is a /30...
> 
> -- 
>   John-Mark Gurney				Voice: +1 415 225 5579
> 
>      "All that I will do, has been done, All that I have, has not."
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