Re: Clustering and browsing

[rob@xxxxxxxxx]

Is an "IP sprayer" anything like Round Robin DNS?  If so, that's not an 
option.  We tried Round Robin DNS for sametime and were totally 
dissatisfied with the results.  For example we would go to
http://sametime.dekko.com
and RRDNS would send them to either http://sametime01.dekko.com or 
http://sametime02.dekko.com.  However, if sametime01 was down, but it's 
box still running, nothing stopped the RRDNS from still routing requests 
to sametime01.  Basically it had the feeling that if I could ping 
sametime01 then who cares if:
a - http is running for that domino server
b - that domino server is even running at all
Now if we dropped the whole damn 400 then RRDNS would only route to 
sametime02.

The single point of failure with ICM does sound a bit scary.  I wonder if 
we need the same solution that IBM was suggesting to us as an alternative 
to RRDNS for sametime, for our domino issue?  Maybe that's a good thing as 
we couldn't cost justify it for sametime alone.  I think this solution at 
least made sure that the tasks were running and not just the simple tests 
that RRDNS did.

Rob Berendt