Re: Using x.x.x.0 and x.x.x.255 host addresses in supernets.

[Jon Lewis]

On Tue, 8 Jan 2008, Joe Provo wrote:

> Yes.  Efficient address utilization is a Good Thing.
>
> > I realize that technically they are valid addresses, but does anyone
> > assign a node or server which is a member of a /22 with a x.x.x.0
> > and x.x.x.255?
>
> Great for router interfaces, loops, etc where you don't care that
> broken or archaic systems cannot reach them, and where the humans
> interacting with them should have no issues.

Until you assign a .255/32 to a router loopback interface and then find 
that you can't get to it because some silly router between you and it 
thinks '.255? that's a broadcast address.'

Been there...had to change the loopback IP.

----------------------------------------------------------------------
 Jon Lewis                   |  I route
 Senior Network Engineer     |  therefore you are
 Atlantic Net                |
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