Here's what's actually happening.

[Rune_Crystalblade]

Well I hate to wreck anyone's illusion here, but...

Level 3 isn't the problem. I work for an ISP that works very closely with level 3, and I just called their NOC to find out wtf is up with that report...

Apparently Level3 filters some of the probe traffic from "Internetpulse.net" because it probes with stupid frequency which is why it reports Packet loss... So if there's packet loss on level3's end, even they can't detect it so... Believe what you want, but that's not it.

[DSN]

Well I hate to wreck anyone's illusion here, but...

Level 3 isn't the problem. I work for an ISP that works very closely with level 3, and I just called their NOC to find out wtf is up with that report...

Apparently Level3 filters some of the probe traffic from "Internetpulse.net" because it probes with stupid frequency which is why it reports Packet loss... So if there's packet loss on level3's end, even they can't detect it so... Believe what you want, but that's not it.

Also It is not uncommon for edge routers to filter ICMP to a lower priority in which the router will just not respond if there is any load present for reasons such as listed above.

[Arioche]

Well I hate to wreck anyone's illusion here, but...

Level 3 isn't the problem. I work for an ISP that works very closely with level 3, and I just called their NOC to find out wtf is up with that report...

Apparently Level3 filters some of the probe traffic from "Internetpulse.net" because it probes with stupid frequency which is why it reports Packet loss... So if there's packet loss on level3's end, even they can't detect it so... Believe what you want, but that's not it.

It's clearly detectable via other means. You can use pathping yourself if you wanted too, which can sometimes filter the initial ping, but will still show the packet loss correctly. Try it yourself, pathping to SE's servers when it's running fine and you will see 0% loss on Level3. When this happens again, run the test and it will be anywhere from 50-100%.

[Squintina]

Well I hate to wreck anyone's illusion here, but...

Level 3 isn't the problem. I work for an ISP that works very closely with level 3, and I just called their NOC to find out wtf is up with that report...

Apparently Level3 filters some of the probe traffic from "Internetpulse.net" because it probes with stupid frequency which is why it reports Packet loss... So if there's packet loss on level3's end, even they can't detect it so... Believe what you want, but that's not it.

Pathpings show issues with Level 3.
Unfortunately for me it's not just for FF14. A client I work for is unable to reach their FTP server because the connection is also getting lost once it reaches a Level 3 hop.

[LunaHoshino]

Pathpings show issues with Level 3.
Unfortunately for me it's not just for FF14. A client I work for is unable to reach their FTP server because the connection is also getting lost once it reaches a Level 3 hop.

My pathping couldn't even complete. It got to the first Level3 node and just died.