thank you both! the pdf Ryan linked is excellent, and the extra detail is much appreciated. On Fri, May 10, 2019 at 6:51 PM Ross Tajvar <ross@tajvar.io> wrote:
Hi Justin,
What I think Ryan is getting at is that packet loss at a single hop just means that hop is rate-limiting ICMP. It's not a cause for concern. If you see cascading loss (loss starting at one hop and persisting through all subsequent hops), then that *is* a cause for concern.
FWIW I checked my monitoring to a target in Level3's network in DC and I don't see any issues.
-Ross
On Fri, May 10, 2019 at 9:47 PM Ryan Kearney via Outages < outages@outages.org> wrote:
Read this
https://www.nanog.org/meetings/nanog47/presentations/Sunday/RAS_Traceroute_N...
On Fri, May 10, 2019 at 8:36 PM Justin Kinney via Outages <outages@outages.org> wrote:
seeing large amounts of packet loss between from Level 3 in Washington,
DC. Anyone else?
Snippet of an MTR:
9.|-- 9-1-21.bear2.Washington111.Level3.net 0.0% 10
1.5 1.9 1.3 4.4 0.8
10.|-- ae-1-3502.ear2.Washington12.Level3.net 90.0% 10 1.9 1.9 1.9 1.9 0.0 11.|-- ix-ae-36-0.tcore1.aeq-ashburn.as6453.net 0.0% 10 15.4 3.5 1.5 15.4 4.4 12.|-- if-ae-2-2.tcore2.aeq-ashburn.as6453.net 0.0% 10 209.4 209.6 209.4 210.2 0.0 13.|-- if-ae-12-4.tcore4.njy-newark.as6453.net 0.0% 10 210.1 210.2 209.9 210.7 0.0 14.|-- if-ae-1-3.tcore3.njy-newark.as6453.net 0.0% 10 209.0 209.0 208.9 209.3 0.0 15.|-- if-ae-15-2.tcore1.l78-london.as6453.net 0.0% 10 208.9 209.1 208.9 209.5 0.0 16.|-- if-ae-3-2.tcore1.pye-paris.as6453.net 0.0% 10 209.3 209.5 209.3 210.4 0.0 17.|-- if-ae-8-1600.tcore1.wyn-marseille.as6453.net 0.0% 10 200.6 201.9 200.4 213.4 4.0 18.|-- if-ae-5-6.tcore1.mlv-mumbai.as6453.net 90.0% 10 211.0 211.0 211.0 211.0 0.0 19.|-- if-ae-2-2.tcore2.mlv-mumbai.as6453.net 0.0% 10 203.6 203.8 203.5 204.1 0.0 20.|-- if-ae-9-2.tcore2.cxr-chennai.as6453.net 0.0% 10 203.6 205.6 203.1 225.6 7.0 _______________________________________________ Outages mailing list Outages@outages.org https://puck.nether.net/mailman/listinfo/outages
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