nanog mailing list archives

Re: verizon fios, northeast, routing issues?


From: Miles Fidelman <mfidelman () meetinghouse net>
Date: Fri, 15 Oct 2021 12:48:16 -0400

FYI:

Funny thing, this morning, the packet loss rate has dropped to between 0 and 10% (from closer to 40%).  Route seems to the same.

One wonders if some piece of equipment has been updated.

Miles Fidelman


Miles Fidelman wrote:
Ok folks,

Thanks for the info about uunet.  But that doesn't address:

3. The intermittent, high delays (factor of 10) jump out  (also, when running ping tests, there seem to be intermittent periods of long sequences of timeouts)
or, that, for about 4 years now, gamers seem to be reporting really poor performance across FIOS in the Northeast - tied to rather high packet loss rates.

Note that those packet losses seems to be bursts of 8-10 lost packets every 10 packets or so, and the really high delays on some of the traceroutes seem to indicate that it's happening somewhere in the middle of the path, not at my end.

And, come to think of it, that might explain some of the horrid performance of the FIOS channel guide.


Any thoughts?  Anyone here from Verizon Northeast FIOS operations who might have a comment?

Thanks,

Miles Fidelman



Miles Fidelman wrote:
Any Verizon folks here?

I've been having some rather weird network issues lately - just reading email via IMAP, from home.  Over a 1gig FIOS connection to a machine in a nearby Tierpoint data center that has LOTS of good connectivity.

I just tried some traceroutes, and got some interesting results:

These originate on a machine connected to a 1gig FIOS feed, and end at a machine, located in a Tierpoint datacenter, about 10 miles from here.

traceroute to ntcorp.com (207.154.13.58), 64 hops max, 52 byte packets
 1  * fios_quantum_gateway (192.168.1.1)  3.530 ms  2.822 ms
 2  * * *
 3  100.41.27.110 (100.41.27.110)  14.970 ms  5.323 ms  6.306 ms
 4  0.csi1.bstnmafr-mse01-bb-su1.alter.net (140.222.10.32) 11.069 ms  8.477 ms  17.097 ms
 5  * * *
 6  0.ae1.br1.bos30.alter.net (140.222.236.253)  17.121 ms 19.027 ms
    0.ae2.br1.bos30.alter.net (140.222.236.255)  19.795 ms
 7  * * *
 8  colo4-dalla.bear1.boston1.level3.net (4.53.61.86)  2205.648 ms 8.331 ms  13.161 ms
 9  static-33-65-203-66.axsne.net (66.203.65.33)  16.951 ms 13.791 ms
    static-145-65-203-66.axsne.net (66.203.65.145)  21.503 ms
10  server1.ntcorp.com (207.154.13.58)  17.872 ms  15.902 ms 14.415 ms

Several things jump out:

1. alter.net is not a common path between here & there - usually a lower grade connection, when other backbones aren't working right

2. origin - alter.net - level.3 - endpoint is just bizarre, one would think that the regional FIOS network has a direct connection to level.3  (it also seems kind of odd that the packets are flowing from Acton MA, to Boston, and back out to Marlboro MA - there's an awful lot of fiber running along Rt. 495, and the networks are fairly dense around here)

3. The intermittent, high delays (factor of 10) jump out  (also, when running ping tests, there seem to be intermittent periods of long sequences of timeouts)

All in all it's really mucking with both streaming services, and simply posting emails (SMTP timeouts).

All of which leads me to wonder if there's something mucked up with Verizon's routing tables (or a particular network interface).

Any insights (or fixes) to be had?

Thanks,

Miles Fidelman







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In practice, there is.  .... Yogi Berra

Theory is when you know everything but nothing works.
Practice is when everything works but no one knows why.
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