Ray,
I'm not sure what you mean when you state that if "done that with a PC the
interface would not work"...Let's take it to mean that you would try to ping
an address assigned to PC's network interface. Depends on what the
"interface" is comprised of. E.g, Windows 9x, NT and 2k and Linux (hey,
it's a PC operating system too! ) all allow you to create a hosts file and
of course you always have the loopback and, if you're not using DHCP, the
local host addresses. So if you've loaded a TCP/IP stack you can always
ping those addresses. The fact that they're not physical interfaces or
connected to one don't matter beans to IP (Layer 3, remember?), that's not
for it to know or care about. Now, normally you'd have a NIC installed and
the host address assigned to that so you also have Layers 2 and 1
functionality, but they're _not necessary for a ping to happen_. See what
I'm driving at? I'm quite ignorant of Sun hardware, but I'll bet that le0
is a virtual interface (Solaris shells don't care about layer 1 either)
representing some physical interface that may or may not be hooked up to an
actual transmission medium. The fact is that an interface (physical or
virtual) is configured with an address and it's active is enough for PING.
>
>""Ray Smith"" wrote in message
>[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> > Guys,
> >
> > I was putting a lab together and noticed something wierd. I configured
>my
> > Sparc (Unix) station's Le0 interface with an IP address, brought it up
>and
> > decided to play around with it a little. I noticed that I could ping
>the
>IP
> > that I configured on the interface although it was disconnected
>from/plugged
> > OUT of the hub. I asked one of the Unix guys at my job if this was
>strange
> > and he said NO! He could not tell me why but only said that it will
>always
> > be able to ping the IP address configured on the box despite the fact
>that
> > it is not connected to a Hub.
> >
> > What I need to know guys is WHY. I am not just satisfied with the fact
>that
> > it is suppose happen unless I can know WHY it happen. Any takers here?
> > Thanks dude.
> >
> > Ray
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