[194180] in North American Network Operators' Group
AW: Facebook more specific via Level3 ?
daemon@ATHENA.MIT.EDU (=?UTF-8?Q?J=C3=BCrgen_Jaritsch?=)
Tue Mar 21 15:44:47 2017
X-Original-To: nanog@nanog.org
From: =?UTF-8?Q?J=C3=BCrgen_Jaritsch?= <juergen@jaritsch.at>
To: "'Luke Guillory'" <lguillory@reservetele.com>,
<nanog@nanog.org>
In-Reply-To: <8D89F96B7AB1B84F9E049CC7BB91BF5CFB0E571B@RTC-EXCH01.RESERVE.LDS>
Date: Tue, 21 Mar 2017 20:39:49 +0100
Errors-To: nanog-bounces@nanog.org
Hi Luke,
please see =
https://mailman.nanog.org/pipermail/nanog/2017-March/090658.html ... I =
did some tests a few min ago and yes, I'm receiving the 31.13.77.x and =
31.13.76.x via DNS for www.facebook.com.
Best regards
J=C3=BCrgen
-----Urspr=C3=BCngliche Nachricht-----
Von: Luke Guillory [mailto:lguillory@reservetele.com]=20
Gesendet: Dienstag, 21. M=C3=A4rz 2017 20:38
An: J=C3=BCrgen Jaritsch <juergen@jaritsch.at>; nanog@nanog.org
Betreff: RE: Facebook more specific via Level3 ?
Are they replying with that subnet via dns when requests are being made?
Luke Guillory
Network Operations Manager
Tel: 985.536.1212
Fax: 985.536.0300
Email: lguillory@reservetele.com
Reserve Telecommunications
100 RTC Dr
Reserve, LA 70084
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-----Original Message-----
From: NANOG [mailto:nanog-bounces@nanog.org] On Behalf Of J=C3=BCrgen =
Jaritsch
Sent: Tuesday, March 21, 2017 2:24 PM
To: nanog@nanog.org
Subject: Re: Facebook more specific via Level3 ?
Hi,
> This specific, and many others, are only announced to peers in the=20
> metro they originate in. To receive this prefix directly you'll need=20
> to peer with us in Los Angeles.
the point is: Level3 is exporting this prefix to the EU since ~1 week =
=E2=80=A6 Telia is learning it from Level3 and they also started to =
re-export it:
Telia Looking Glass
(http://lg.telia.net/?query=3Dbgp&protocol=3DIPv4&addr=3D31.13.71.0/24+ex=
act&route
r=3DVienna)
Command: show route protocol bgp 31.13.71.36 table inet.0
31.13.71.0/24 *[BGP/170] 18w5d 16:40:16, MED 0, localpref 150
AS path: 3356 32934 I, validation-state: =
unverified
> to 80.239.128.178 via ae9.0
This is causing >120ms latency to Austrian (and some German ...) =
networks towards Facebook - current traceroute from source network =
188.172.239.0/24:
Packets Pings
Host Loss% Snt Last =
Avg
Best Wrst StDev
1. router 0.0% 4 0.5 =
0.5
0.5 0.6 0.0
2. 192.168.8.3 0.0% 4 0.6 =
0.7
0.6 0.8 0.1
3. 37.252.236.88 0.0% 4 37.3 =
34.2
30.6 37.3 2.9
4. er-03.00-09-23.anx04.vie.at.anexia-it.com 0.0% 4 21.1 =
31.9
21.1 50.9 13.3
5. cr-02.0v-08-72.anx03.vie.at.anexia-it.com 0.0% 4 23.2 =
25.9
20.4 31.6 5.1
6. win-b4-link.telia.net 0.0% 4 22.1 =
25.0
22.1 30.1 3.5
7. level-ic-1573273-wien-b4.c.telia.net 0.0% 3 22.4 =
22.3
21.1 23.3 1.1
8. ae-3-3611.edge2.dallas1.level3.net 0.0% 3 150.5 =
150.6
150.4 150.8 0.2
9. facebook-in.edge2.dallas1.level3.net 0.0% 3 156.6 =
152.9
151.0 156.6 3.2
10. po102.psw02.dft4.tfbnw.net 0.0% 3 151.4 =
151.6
151.4 152.0 0.4
11. 173.252.67.57 0.0% 3 151.6 =
152.3
151.6 153.4 0.9
12. edge-star-mini-shv-01-dft4.facebook.com 0.0% 3 159.3 =
158.4
152.5 163.6 5.6
The admins of AS42473 started to drop the more specific from Level3 and =
now they get it from Telia (which is the Level3 re-export they learned).
I guess you guys should talk to Level3 and ask them what the hell they =
are doing? :).
Thanks & best regards
J=C3=BCrgen
