>Now that I have my 5000/200 back up and running, I've been looking at
>getting NTP working correctly with multicasting...
>
>The problem is that peers discovered via multicast always dissapear
>between multicast broadcasts, since the reachability change goes to zero
>before the next multicast packet is received.
>
>I guess it boils down to the question: why does xntpd think that 224.0.1.1
>is unreachable?  The reachability change should be going up, not down...
>
>(For the curious, the same thing happens under linux as well.)

Is your multicast key configured correctly? The key number, key type
an key value have to be the same on all multicast clietns as they are
on the multicast (or broadcast) server.

or you can start xntpd with no auth set (-A on the commandline).
the manual page is ... less than helpful about explaining that.

Once you've double-checked that: does it work?