Hi, I'm wondering about something, maybe one of you can enlighten me here. I have set up a few UDMs (... to eventually get out of Atlas what we had with TTM). A small one with only 10 probes is now showing that actually only 7 probes return data - two more have returned data at some point in the past - "Jul 06, 06:11" in one case - while the 10th assigned problem seems to have never sent anything. (This is UDM 1002000, the "dead" probe is #2760 in AS 3292). The question coming from this is: how do probes get assigned to UDMs, and will dead probes get replaced eventually? Or is the assignment done statically at the beginning of the UDM? The reason why this is relevant: if I am going to set up UDMs to replace what TTM does, the idea is to have a reasonable high number of probes, say "50" or "100", and define our Internet reliability as "more than 2/3rd of the UDM probes have been answered without loss", or something like that - taking into account that somewhere on the Internet, things will always be broken, but that's not our responsibility. This falls apart of probes deteriorate after a given time, and a given UDM measurement will use "less and less probes" (so in the extreme, of the 50 initial probes, 30 might be "dead probe" and thus the result is always "0% reliability, more than 50% of the probes can not reach us"), instead of the system keeping the requested number of probes by replacing dead ones... Gert Doering -- NetMaster -- have you enabled IPv6 on something today...? SpaceNet AG Vorstand: Sebastian v. Bomhard Joseph-Dollinger-Bogen 14 Aufsichtsratsvors.: A. Grundner-Culemann D-80807 Muenchen HRB: 136055 (AG Muenchen) Tel: +49 (89) 32356-444 USt-IdNr.: DE813185279