> We are aware of the requirement to prevent two users on the same
VSWITCH
> from talking to each other.

*grump* That's what VLANs are for. Don't want two hosts to talk? Don't
put them on the same VLAN. Frame-based ACLs are very rare in the real
world; do we need packet inspection on that level here? I think not. 

> Restricting the details of the VSWITCH simply makes it more difficult
for
> the guest to be configured correctly.  I mean, does the sysprog
*really*
> want to be involved in every "guest A can't ping guest B" quandry?

That doesn't really make sense. Hosts should either be statically
configured (at which point they don't need access to the switch info at
all), or dynamically configured with DHCP (at which point they STILL
don't need to know the switch configuration and who else is connected). 

And yes, I *DO* want to know about connectivity problems. If host A
can't ping host B, then they are either 1) in the wrong VLAN, 2)
connected to the wrong switch, or 3) misconfigured in some way. All of
which imply I need to do something about it, and the networking people
certainly aren't going to fix it.  

> And if I wanted to, I'd just start ARPing for different IP addys and
see
> what responses I get.  Not have the QUERY output would slow me down
for a
> few minutes.

On the other hand, there's no reason to hand someone a list of
"interesting" MAC addresses for free, either. You couldn't get that
information from a real switch without logging into the management
interface, and there's *some* kind of authentication for that
configuration information, regardless of how strong that authentication
might be. 

I think I'd agree with Marcy: it seems odd to tell a class G guest
anything about the other guests attached to a switch. Class B, sure, but
not class G. 

-- db

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