nanog mailing list archives
Re: Cogent NOC
From: Andrew Paolucci <andrew () paolucci ca>
Date: Wed, 14 Dec 2016 14:59:53 -0500
If the loss is seen towards a terminating webserver maybe spool curl response times over the course of a day and correlated that to observed loss via a smokeping service. Support may be more responsive with some hard statistics. Regards, Andrew Paolucci Sent with [ProtonMail](https://protonmail.com) Secure Email. -------- Original Message -------- Subject: Re: Cogent NOC Local Time: December 14, 2016 2:53 PM UTC Time: December 14, 2016 7:53 PM From: listas () kurtkraut net To: amps () djlab com Nanog <nanog () nanog org> Hello, mtr packet loss column has no scientific precision and should not be considered. It is not mtr fault but forwarding routers have a low priority to respond to ICMP requests. The only way you can prove there is a problem is a end to end ping, the regular ping command, not mtr. Best regards, Kurt Kraut 2016-12-14 17:16 GMT-02:00 Randy <amps () djlab com>:
Hi all, Anyone beyond front line support at cogento on list? Nanog is the last place I'd look for assistance but it seems support over at cogentco is not nearly what it used to be. Example MTR to cogen't own website (support doesn't utilize or understand MTR at all apparently): Host Loss% Snt Last Avg Best Wrst StDev 1. x.x.x.x 0.0% 196 0.5 11.7 0.3 186.8 35.2 2. x.x.x.x 0.0% 196 0.6 10.2 0.4 226.3 36.2 3. 38.88.249.209 0.0% 196 0.9 1.1 0.7 17.7 1.2 4. te0-0-2-3.nr13.b023801-0.iad01.atl 0.0% 196 1.0 1.0 0.8 2.0 0.1 5. te0-0-0-1.rcr22.iad01.atlas.cogent 2.0% 196 2.1 1.9 1.0 3.3 0.4 6. be2961.ccr41.iad02.atlas.cogentco. 2.6% 196 1.8 2.1 1.1 3.8 0.5 7. be2954.rcr21.iad03.atlas.cogentco. 2.6% 196 2.0 2.3 1.2 9.4 0.7 8. be2952.agr11.iad03.atlas.cogentco. 0.5% 196 2.7 2.6 1.5 6.8 0.6 9. cogentco.com 4.1% 196 2.1 2.0 1.0 16.8 1.1 Pretty much the same to anywhere. Packet loss begins at rcr22.iad01 and propagates all the way down the line. Worse during peak hours, gone late at night. After three days of no email response for my ticket, I called and after an hour of my life I want back, front line support cannot reproduce the loss. Final conclusion: "Your host is dropping packets". -- ~Randy
Current thread:
- Cogent NOC Randy (Dec 14)
- Re: Cogent NOC Kurt Kraut (Dec 14)
- Re: Cogent NOC Randy (Dec 14)
- Re: Cogent NOC Ken Chase (Dec 14)
- Re: Cogent NOC Randy (Dec 14)
- Re: Cogent NOC Andrew Paolucci (Dec 14)
- Re: Cogent NOC Mike Hammett (Dec 14)
- Re: Cogent NOC Bryan Holloway (Dec 14)
- Re: Cogent NOC Randy (Dec 14)
- Re: Cogent NOC Bryan Holloway (Dec 14)
- Re: Cogent NOC Randy (Dec 15)
- Re: Cogent NOC Kurt Kraut (Dec 14)