Please see my below post on this matter, which I posted only 2 days ago: https://puck.nether.net/pipermail/outages/2013-January/005111.html What you've shown in your mtr does not show any issue of any kind with Level 3. The packet loss shown at hops 4/5/6 does not "trickle down" each subsequent hop (look at hop 7 onward for proof), nor is there any sign of latency increase either. On the other hand, the 2nd mtr you provided shows some degree of packet loss starting at hop 2 (TW Telecom) which *does* "trickle down" through all subsequent hops (egress). If you want to know how many packets were lost, look at the --order flag to mtr (I recommend --order=LSRNABW). Plain and simple: talk to TW Telecom about the loss in their network. -- | Jeremy Chadwick jdc@koitsu.org | | UNIX Systems Administrator http://jdc.koitsu.org/ | | Mountain View, CA, US | | Making life hard for others since 1977. PGP 4BD6C0CB | On Fri, Jan 25, 2013 at 05:46:27AM +1100, Chris Boulton wrote:
Seeing connectivity issues as traffic passes through Level 3 in Dallas - not seeing the same issues for where routes converge (above.net in DFW) over our TW Telecom link.
Anybody else experiencing this as well?
Level 3:
Host Loss% Snt Last Avg Best Wrst StDev 1. vlan358.car1.Houston1.Level3.net 0.0% 167 105.9 80.5 31.7 276.4 59.8 2. ae-2-5.bar1.Houston1.Level3.net 0.0% 167 32.5 34.6 32.2 93.8 7.3 3. ae-13-13.ebr1.Dallas1.Level3.net 0.0% 167 39.5 37.4 36.7 41.2 0.9 4. ae-91-91.csw4.Dallas1.Level3.net 65.1% 167 44.5 43.5 39.7 53.8 4.0 5. ae-4-90.edge2.Dallas3.Level3.net 5.4% 166 37.1 37.9 36.1 75.6 5.1 6. ex-3-1-0.er1.dfw2.us.above.net 66.1% 166 39.5 43.5 38.9 104.8 12.5 7. xe-3-1-0.cr1.dfw2.us.above.net 0.0% 166 37.3 40.4 37.0 114.1 10.6 8. xe-0-0-0.er3.dfw2.us.above.net 0.0% 166 36.2 39.8 36.1 99.3 10.2
Host Loss% Snt Last Avg Best Wrst StDev 1. 50.58.18.1 0.0% 829 4.3 23.9 4.1 121.2 14.5 2. dal2-pr2-xe-0-3-0-0.us.twtelecom.net 0.1% 829 55.4 31.2 9.4 121.0 17.2 dal2-pr2-xe-2-3-0-0.us.twtelecom.net 3. xe-3-0-0.er2.dfw2.us.above.net 0.1% 829 44.8 31.6 9.5 143.7 17.9 4. xe-0-1-0.cr2.dfw2.us.above.net 0.2% 829 40.5 31.2 10.3 116.2 15.9 xe-3-0-0.cr2.dfw2.us.above.net 5. xe-0-2-0.er3.dfw2.us.above.net 0.2% 829 42.7 32.4 9.6 109.2 16.5
Regards,
Chris Boulton Bigcommerce
Email: chris@bigcommerce.com
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