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Re: TeliaSonera routing issue / microsoft.com
- From: Tom Sands
- Date: Thu Sep 06 09:33:29 2007
This was the update we'd received.
At the moment we are seeing bit errors on a link between London and New
York in a provider’s network, which is significantly affecting traffic
on our IP backbone. This issue is escalated to our level 3 manager who
is currently in contact with the provider, and we are actively working
to reach a resolution. Unfortunately we can not provide an ETR for the
issue at this time.
At the same time we are experiencing a fault in London after a planned
upgrade. Our IP engineers are currently troubleshooting this issue and
we are waiting for further information.
------------------------------------------------------
Tom Sands
Chief Network Engineer
Rackspace Managed Hosting
(210)447-4391
------------------------------------------------------
Pekka Savola wrote:
Hi -
TeliaSonera has reported routing problem due to prefix filtering leaks /
max-prefix triggering, starting around 0616 UTC. I guess some others
are seeing this as well. I wonder what was the more exact reason, and
why the problem still persists after about 6 hours.
In particular, our customers have noticed this with various sites
related to Microsoft, including e.g., VoIP systems failing because
contacting some active-x site failed.
Is there a looking glass, traceroute server, or sensible contact info
for someone at AS 8075 to check what the routing looks like from that
perspective?
(Traceroute works from our upstream, but not from here, which suggests a
potential return path issue for e.g., 193.166.0.0/15, pingable address
193.166.255.241).
;; ANSWER SECTION:
www.microsoft.com. 1088 IN CNAME toggle.www.ms.akadns.net.
toggle.www.ms.akadns.net. 57 IN CNAME g.www.ms.akadns.net.
g.www.ms.akadns.net. 57 IN CNAME lb1.www.ms.akadns.net.
lb1.www.ms.akadns.net. 57 IN A 207.46.192.254
lb1.www.ms.akadns.net. 57 IN A 207.46.193.254
lb1.www.ms.akadns.net. 57 IN A 207.46.19.190
lb1.www.ms.akadns.net. 57 IN A 207.46.19.254
1 s-b4-link.telia.net (213.248.97.93) 0.620 ms 0.498 ms 0.409 ms
2 s-bb2-link.telia.net (213.248.66.13) 0.762 ms 0.597 ms 0.721 ms
3 kbn-bb2-pos0-0-0.telia.net (213.248.65.29) 10.231 ms 10.276 ms
10.215 ms
4 nyk-bb2-link.telia.net (213.248.82.101) 94.660 ms 94.670 ms
94.640 ms
5 sjo-bb1-link.telia.net (80.91.254.177) 161.549 ms 161.542 ms
161.530 ms
.. stops here.
If it works (from upstream) it continues as follows:
6 microsoft-110312-sjo-bb (213.248.86.70) 161.421 ms 161.818 ms
157.519 ms
7 ge-6-3-0-44.sjc-64cb-1a.ntwk.msn.net (207.46.44.98) 161.814 ms
155.456 ms 157.559 ms
8 ge-1-0-0-0.bay-64c-1a.ntwk.msn.net (207.46.37.158) 156.229 ms
158.292 ms 156.223 ms
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