Hi, One more RIPE Atlas research support request: this time on DSCP marking/bleaching from as many vantage points as possible. This one feeds into the IETF tsvwg, and is pretty applicable to operators in the RIPE community also. In short: they have one target host, and they want to test 3 DSCP codepoints with traceroutes from as many probes as possible. This is not an ongoing study. They'll run a pretty typical traceroute config from as many probes as possible once for each DSCP they're interested in, and they'd like to do it as rapidly as possible. This is simplest as three one-off measurements. Could you: - bump their credit allowance if necessary - bump the number of probes allowed per measurement to some high number; as close to "all probes" as possible? The account they're using is ana@erg.abdn.ac.uk <mailto:ana@erg.abdn.ac.uk> Cheers, S. -------- Forwarded Message -------- Subject: Re: Can you help perform a large-scale ATLAS measurement campaign? Date: Tue, 4 May 2021 19:48:40 +0100 From: ana@netstat.org.uk To: Stephen Strowes <sds@ripe.net> Hi Stephen,

Would you like to run (e.g.) thousands of probes to the target with all DSCP values as rapidly as possible, or would you run multiple measurements with 1,000 probes each over a longer period?

Thousands of probes as rapidly as possible, but each DSCP is a separate measurement (so 3 separate measurements). I don’t expect to repeat them over a longer period.

Either way, the credit cost will likely be the same, but the Atlas folks may need to modify other limits to accommodate the measurements. Your current account settings should be visible at https://atlas.ripe.net/atlas/user/

The only limit that worries me there is: Maximum number of probes per measurement:1,000 It doesn’t look like these measurements will hit the other limits.

Also: Is this email address the one to add credits to?

The account uses email address ana@erg.abdn.ac.uk <mailto:ana@erg.abdn.ac.uk>, rather than this one. Thanks again! Ana