nanog mailing list archives
Amazon EU-West 1 trouble
From: Baldur Norddahl <baldur.norddahl () gmail com>
Date: Sun, 23 Apr 2017 12:52:08 +0200
Hello,We are currently experiencing massive packet loss from Amazon EU-West 1. This page http://ec2-reachability.amazonaws.com/ will show most of eu-west-1 as down but actually it is packet loss of 90+ %.
I have found that if I shutdown our link to Hurricane Electric the problem disappears. Also it is only an IPv4 problem as IPv6 is fine (also going through Hurricane Electric).
A traceroute shows everything ok until the first hop inside the Amazon network. The peering is apparently at AMS-IX.
Right now we are ok because I am keeping the HE.Net connection down, but I managed to find another NLNOG Ring node that has the same problem:
gigabit@casablanca01:~$ ping 52.16.0.2 PING 52.16.0.2 (52.16.0.2) 56(84) bytes of data. 64 bytes from 52.16.0.2: icmp_seq=2 ttl=244 time=35.1 ms 64 bytes from 52.16.0.2: icmp_seq=34 ttl=244 time=35.2 ms 64 bytes from 52.16.0.2: icmp_seq=44 ttl=244 time=35.2 ms 64 bytes from 52.16.0.2: icmp_seq=52 ttl=244 time=35.2 ms ^C --- 52.16.0.2 ping statistics --- 72 packets transmitted, 4 received, 94% packet loss, time 71228ms rtt min/avg/max/mdev = 35.170/35.220/35.251/0.232 msThat IP is one from eu-west-1 taken from the ec2-reachability page. When I ping it with the HE.Net link down there is 0% packet loss. With it up we are seeing something like the above. However I notice that Casablanca is going out through Telia not HE. The return path could very well be via HE of course, there is no way to know that.
From all the RING nodes I checked only Casablanca01 seems to experience the problem, so it appears it is not very wide spread.
Anyone know how to get in contact with Amazon and have them debug this issue?
Regards, Baldur
Current thread:
- Amazon EU-West 1 trouble Baldur Norddahl (Apr 23)
- Re: Amazon EU-West 1 trouble Dovid Bender (Apr 23)
- Re: Amazon EU-West 1 trouble Job Snijders (Apr 23)
- Re: Amazon EU-West 1 trouble Dovid Bender (Apr 23)