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Re: Outage during reroute in Nordunet on Feb 14 2022
by Carsten Pettersson 21 Feb '22

21 Feb '22

Hi Otto, I have tweaked a little on our ISIS links to/from our routers in ASIA. Hopefully it will help in future cases. I have a little problem understanding what other problems you have been observing and or what you would be expecting to see in case of errors in network and time for network to converge.. could you please help me understand your microdep graphs etc. Thanks.. -- Carsten Pettersson Senior IP Network Engineer carsten(a)nordu.net | mobile: +45 3118 7401 > On 15 Feb 2022, at 16.22, Otto J Wittner <otto.wittner(a)sikt.no> wrote: > > Hi, Nordunet NOC! > > While browsing yesterdays (2022-02-14) events discovered by our https://microdep.uninett.no end-to-end monitoring tool, we observe a collection of "routechange-events" with associated connection downtimes ("Lost") in Nordunet: > > ## trondheim-mp to adelaide-mp > https://microdep.uninett.no/tracetree.html?topo=/dragonlab/mp/trondheim-mp/… > > Day Time Lost(s) Queue(ms) > 14 14:01 0.1 0.2 > 14 14:22 26.9 0.3 > 14 14:25 0.1 0.2 > > ## trondheim-mp to auckland-mp > https://microdep.uninett.no/tracetree.html?topo=/dragonlab/mp/trondheim-mp/… > > Day Time Lost(s) Queue(ms) > 14 10:23 2.4 0.2 > > (Also observable on trondheim-mp to saopaulo-mp: https://microdep.uninett.no/tracetree.html?topo=/dragonlab/mp/trondheim-mp/…) > > > ## trondheim-mp to zurich-mp > https://microdep.uninett.no/tracetree.html?topo=/dragonlab/mp/trondheim-mp/… > > Day Time Lost(s) Queue(ms) > 14 17:27 0.6 0.1 > > > 26.9, 2.4 and 0.6 second outages... can something perhaps be further optimized? > > BR > O2 > > -- > Otto J Wittner tel +47 99550566 > Sikt http://sikt.no

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Outage during reroute in Nordunet on Feb 14 2022
by Otto Wittner (Uninett) 15 Feb '22

15 Feb '22

Hi, Nordunet NOC! While browsing yesterdays (2022-02-14) events discovered by our https://microdep.uninett.no end-to-end monitoring tool, we observe a collection of "routechange-events" with associated connection downtimes ("Lost") in Nordunet: ## trondheim-mp to adelaide-mp https://microdep.uninett.no/tracetree.html?topo=/dragonlab/mp/trondheim-mp/… Day Time Lost(s) Queue(ms) 14 14:01 0.1 0.2 14 14:22 26.9 0.3 14 14:25 0.1 0.2 ## trondheim-mp to auckland-mp https://microdep.uninett.no/tracetree.html?topo=/dragonlab/mp/trondheim-mp/… Day Time Lost(s) Queue(ms) 14 10:23 2.4 0.2 (Also observable on trondheim-mp to saopaulo-mp: https://microdep.uninett.no/tracetree.html?topo=/dragonlab/mp/trondheim-mp/…) ## trondheim-mp to zurich-mp https://microdep.uninett.no/tracetree.html?topo=/dragonlab/mp/trondheim-mp/… Day Time Lost(s) Queue(ms) 14 17:27 0.6 0.1 26.9, 2.4 and 0.6 second outages... can something perhaps be further optimized? BR O2 -- Otto J Wittner tel +47 99550566 Sikt http://sikt.no -- Otto J Wittner tel +47 99550566 Uninett AS http://uninett.no (Uninett AS er under avvikling, og 1. januar 2022 blir vi en del av Sikt - Kunnskapssektorens tjenesteleverandør.)

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Fwd: Microdep - weekly reports
by Otto Wittner (Uninett) 08 Feb '22

08 Feb '22

Hi, all, The message below seem to have gotten stuck due to my new email-address. O2 -------- Forwarded Message -------- Subject: Microdep - weekly reports Date: Fri, 4 Feb 2022 17:37:53 +0100 From: Otto J Wittner <otto.wittner(a)sikt.no> To: network-metrics(a)lists.nordu.net Dear all, Sikt (Uninett's new name) have now improved the Microdep system somewhat and will try to provide some weekly reports with example observations made with the system. Attached is a first example for week 4. All feedbacked is welcome. Have a wonderful weekend. BR O2 -- Otto J Wittner, Senioringeniør (PhD) https://sikt.no mob: +47 99550566

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traceroute interpretation dk-ore-fw
by Olav Kvittem 04 Oct '21

04 Oct '21

Hi, We are looking at error-detection in traceroutes. We have this traceroute from praha to copenhagen that many times a day ends i asterisks after hitting dk-ore-fw.nordu.net as the last hop. This router has fw in its name and might be some FireWall-thing ? Is it possible to understand this behaviour ? Can we persuade it to allow for more traceroutes ? The last three routers we see is these on the last hop before the copenhagen VM is enclosed. Cheers Olav name dk-ore-sw-a01.nordu.net address 109.105.97.207 name dk-ore-sw-a01.nordu.net address 109.105.97.197 name dk-ore-fw.nordu.net address 109.105.99.180 From : raw traceroute : https://iou2.uninett.no/microdep/traceraw.pl?mp=praha-mp&index=dragonlab&de… 1633309853 starttime 03:10:53 traceroute to 109.105.116.52 40 hops max, 60 byte packets 1 100.64.102.1 0.576 ms 0.696 ms 100.64.102.2 0.514 ms 0.648 ms 100.64.102.1 0.745 ms 0.873 ms 2 100.64.0.1 1.033 ms 195.178.64.232 4.026 ms 4.004 ms 100.64.0.1 1.092 ms 1.231 ms 195.178.64.232 3.935 ms 3 195.113.235.89 2.532 ms 195.178.64.232 3.890 ms 195.113.235.89 2.487 ms 195.178.64.232 3.927 ms 195.113.235.89 2.118 ms 2.081 ms 4 195.113.235.89 2.029 ms 62.40.124.29 0.419 ms 195.113.235.89 1.974 ms 62.40.124.29 0.394 ms 195.113.235.89 1.574 ms 62.40.124.29 0.662 ms 5 62.40.124.29 0.636 ms 0.488 ms 0.461 ms 0.404 ms 0.367 ms * 6 62.40.98.192 6.834 ms 6.805 ms 62.40.98.69 15.299 ms 62.40.98.192 6.934 ms 62.40.98.69 15.316 ms 15.310 ms 7 62.40.98.69 15.287 ms 62.40.125.206 15.319 ms 62.40.98.69 15.297 ms 62.40.125.206 15.274 ms 62.40.98.69 15.246 ms 15.209 ms 8 109.105.97.56 20.463 ms 62.40.125.206 16.365 ms 16.303 ms 15.416 ms 109.105.97.56 20.412 ms 20.433 ms 9 109.105.97.197 20.550 ms 109.105.97.56 20.414 ms 109.105.97.207 20.381 ms 109.105.97.56 20.244 ms 20.221 ms 20.174 ms 10 109.105.99.180 20.503 ms 20.520 ms 109.105.97.197 20.565 ms 20.559 ms 20.620 ms 109.105.99.180 20.973 ms 11 109.105.99.180 20.424 ms 109.105.116.52 20.835 ms 20.957 ms 109.105.99.180 20.505 ms 109.105.116.52 20.865 ms 20.965 ms 1633309918 starttime 03:11:58 traceroute to 109.105.116.52 40 hops max, 60 byte packets 1 100.64.102.2 0.623 ms 100.64.102.1 2.814 ms 100.64.102.2 0.694 ms 0.855 ms 0.987 ms 1.153 ms 2 100.64.0.1 2.894 ms 195.178.64.232 2.765 ms 100.64.0.1 3.013 ms 3.160 ms 3.296 ms 195.178.64.232 2.675 ms 3 195.178.64.232 2.651 ms 195.113.235.89 0.729 ms 0.706 ms 0.682 ms 4.305 ms 195.178.64.232 2.130 ms 4 195.113.235.89 4.003 ms 62.40.124.29 0.479 ms 0.453 ms 195.113.235.89 3.844 ms 3.848 ms 3.724 ms 5 62.40.124.29 0.452 ms * 0.631 ms * 0.641 ms * 6 62.40.98.192 6.802 ms 6.779 ms 62.40.98.69 16.160 ms 16.102 ms 62.40.98.192 6.787 ms 6.719 ms 7 62.40.98.69 15.621 ms 15.586 ms 15.258 ms 15.315 ms 62.40.125.206 15.532 ms 15.507 ms 8 62.40.125.206 15.485 ms 15.594 ms 109.105.97.56 20.150 ms 62.40.125.206 15.494 ms 15.365 ms 109.105.97.56 20.212 ms 9 109.105.97.207 20.406 ms 20.368 ms 109.105.97.56 20.280 ms 20.243 ms 109.105.97.197 20.552 ms 109.105.97.56 20.195 ms 10 109.105.99.180 20.952 ms 20.547 ms 20.505 ms 20.431 ms 20.989 ms 20.435 ms 11 109.105.99.180 20.849 ms 20.377 ms 20.494 ms 20.459 ms 20.490 ms 20.474 ms 12 * * * * * * 13 * * * * * * 14 * * * * * *

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Proposal for collaboration project in the pipeline...
by Otto Wittner (Uninett) 23 Sep '21

23 Sep '21

Dear all, I hope you are all well, Covid-free, and perhaps back in your offices (either the classic one or the home variant) and "behind the wheel" again. Me, Olav and Olaf at Uninett have started preparing a new variant of our proposal for a Nordic collaboration project on end-to-end monitoring. We aim to have a first draft of our document ready by tomorrow. We would very much like to have feedback, hence is doable for you to read through those few pages and join a quick online meeting on Thursday Aug 26th to give us your comments? Calendar invitation with Zoom-link is incoming in separate email. BR O2 -- Otto J Wittner tel +47 99550566 Uninett AS http://uninett.no

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Fwd: outage amazon us to trondheim
by Olav Kvittem 12 Aug '21

12 Aug '21

what microdep can help with : -------- Forwarded Message -------- Subject: outage amazon us to trondheim Date: Thu, 12 Aug 2021 15:01:42 +0200 From: Olav Kvittem <olav.kvittem(a)uninett.no> To: stamnett(a)uninett.no <stamnett(a)uninett.no>, NORDUnet NOC <noc(a)nordu.net> Hi, On 2021-08-10 we saw outages from Amazon US est to Trondheim. 3 outages each close to 20 minutes between 14 and 15 oclock and a few smaller ones indicating a turbulent network situation. (coloumn 2 is seconds outage)) Traceroute visualization shows red nodes where the route has stopped. We see several nordunet routers in the list which indicates routing instability. See https://iou2.uninett.no/microdep/tracetree.html?topo=/dragonlab/mp/amazonuw… if access control permits. The other way we also see routing turbulence even within uninett ( oslo-gw1 and dk-bal2 has lost amazon prefix). We propose project to develop alarms based on traceroutes when main routes fails like this. Olav

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Kickoff - Nordic Network Metrics WG
by Lars Fischer 23 Jun '21

23 Jun '21

Subject: Kickoff - Nordic Network Metrics WG When: Tue 29.6.2021 13:00 - 15:00 (2.0 hours) (GMT +02:00) Where: https://nordunet.zoom.us/j/4522881729 Required: network-metrics(a)lists.nordu.net Agenda will follow on the mailing list

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Kick-off meeting
by Lars P. Fischer 23 Jun '21

23 Jun '21

All, Let’s see if we can manage to kick off the Nordic network metrics WG before the holidays. Please fill in his doodle: - https://doodle.com/poll/zqhxp93ts77yf9ky The doodle avoids next week due to TNC, midsummer, etc. We will have a simple agenda, with our items: 1. Introductions 2. Deploying the Uninett micro-dependency measurement probes 3. Next Meeting 4. AoB Item 2) above is the reason we want to get started right ahead. Uninett is eager to progress the deployment. /Lars -- Lars Fischer - Strategy & Policy, NORDUnet lars(a)nordu.net, +45 2288 1729, @lpfischer

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Welcome!
by Lars P. Fischer 11 Jun '21

11 Jun '21

All, Welcome to the Nordic network metrics WG mailing list. You have been added to this list because you attended a meeting on network metric in the recent weeks. If you do not think you should be on the list, let me know. Likewise, if someone else from your NREN should be on the list, let me know. As agreed in the CAG, this group will serve as a forum for discussions related to (operational) network metrics, and to coordinate joint action. Initially, the group will help coordinate deployment of probes for the Uninett-developed micro-dependability system. I will issue a doodle poll for a first WG meeting soon(ish). For reference, the group description is attached. /Lars -- Lars Fischer - Strategy & Policy, NORDUnet lars(a)nordu.net, +45 2288 1729, @lpfischer

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Welcome to me
by Anders Mundt Due 11 Jun '21

11 Jun '21

Hello I'm me, who are we? Suddenly got this mail and it might be a good idea, but it's very out of the blue :-) Are we people that allready know each other, or is an introduction in order ? Mvh Anders Mundt Due Technician, DeiC

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