del@mlb.semi.harris.com (Don Lewis) (06/07/90)
On Jun 6, 2:47pm, Philippe Prindeville wrote: } Subject: Re: BIND bug list [Really: client/resolver interface] > From: del@mlb.semi.harris.com (Don Lewis) > } Subject: Re: BIND bug list [Really: client/resolver interface] > > If you use UDP to make queries, you can't distinguish between: > > 1) name server is dead > > 2) query packet or response packet was lost > > 3) name server is taking a long time to find the answer > > > Since cases 1 and 2 (above) are indeed problems, I will state again > that VMTP would distinguish between 3 and the previous two. So > perhaps it is useful beyond the scope of recursive queries. Case 3 doesn't really happen (unless the server is seriously overloaded) with non-recursive queries since the name server has all the information needed for the answer already squirreled away. I would be more concerned with the extra overhead associated with VMTP since timely responses will be received for the vast majority of non-recursive queries. Don "Truck" Lewis Harris Semiconductor Internet: del@mlb.semi.harris.com PO Box 883 MS 62A-028 Phone: (407) 729-5205 Melbourne, FL 32901