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lbgaus's profile

New Member

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2 Messages

Thursday, March 9th, 2023 6:39 AM

IP Peering issues in Texas region?

I am an AT&T Fiber customer in Houston, Texas. For the last week or so, I have had issues come up daily 2-3+ times in a 24 hour period where I completely lose all internet connectivity for around 90 seconds, then it comes back for several more hours, then this behavior repeats again.  First, I suspected my BGW210-700 gateway was causing it, but in troubleshooting I have ruled that out.  It seems as if there is some peering/network issue within the AT&T backhaul network causing this and was hoping someone in the networking team can take a look.

If I do a traceroute from my machine to 1.1.1.1, it passes through the following routers...
192.168.0.254 (my Arris BGW210 CPE router)

104.186.12.1 (104-186-12-1.lightspeed.hstntx.sbcglobal.net)

71.149.39.62

32.130.16.255

on and on...

For testing purposes, I opened 4 terminal windows running a continuous ping to each of them and I have a solid 100% ping statistics to 192.168.0.254 (my router), 104.186.12.1, and 71.149.39.62.  There is no connectivity or latency problem anywhere there. The problems begin somewhere in the path between 71.149.39.62 and 32.130.16.255 from what my testing has shown...

Since I cannot directly ping 32.130.16.255, I resorted to pinging 1.1.1.1 with a TTL value of 8 (which is the hop number after 71.149.39.62) and alas beginning with this router I can see the timeouts occurring during the approximately 90 second window of time when total internet connectivity is lost.  I want to re-iterate that I never have any packet loss pinging the routers earlier in the traceroute, they have 100% packet reply rate so because of this I am absolutely sure I do not have any problems with my CPE equipment.

As I have demonstrated through testing, the problem is beyond my Arris gateway box.  Please do not reply with any instructions asking me to reboot or factory reset my router.

ACE - Expert

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35.9K Messages

1 year ago

First, that's some pretty good diagnostics so far, and thank you for being so thorough.

Second, there are no AT&T engineers here, and the AT&T Support group that does read these posts doesn't seem to have any ability to actually get in touch with that group.  Maybe they can raise tickets, though, so if ATTHelp responds with a request to do a DM Chat, join the DM chat and see what happens and report back about it.

Third, I would ask that you check to see if you can find a route to somewhere that doesn't fall apart at the same point, e.g. if you can think of an entity that you know has a host located on site that you could reach (e.g. a university's FTP or NTP server; not their main "www" marketing page, because that's usually hosted by a CDN or something) and repeat your test with that.  The idea being is there an AT&T host that's having an issue or a particular peering path.  Just thinking it might be useful information to put in the ticket if ATTHelp will create one.

If this continues to happen and ATTHelp doesn't seem interested, reply back here and we'll try to get someone to have them work with you.  Also, if you know of any other AT&T customer in your area that can also demonstrate the problem, it's incredibly helpful to document that it applies to multiple accounts (it gets more attention that way); get them to come here and reply to this post.

Community Support

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232.9K Messages

1 year ago

We understand how important it is to have a stable internet connection, @lbgaus

 

Thanks, @JefferMC, for your valuable input. 

 

Your extensive troubleshooting will help us determine what's going on with your network. We don't want to waste any more of your time, so please meet us in a direct message, so we can figure out why this is happening. Please check your direct message inbox in the top right corner of the page. We'll be messaging you there shortly. 

 

Raiden, AT&T Community Specialist 

Tutor

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4 Messages

1 year ago

@lbgaus If possible please let me know if you got any info from these people besides their damage control private message request. I've been dealing with horrible speeds, pings and occasional drop outs on a 1 gig fiber plan for the past month, it's basically only 700-800 mbps to their server in the local DC and thats it. Anything else farther and it's equivalent to low tier comcast docsis.

(edited)

New Member

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2 Messages

1 year ago

Interestingly, this problem seems to be fixed now, within a day of posting the issue stopped happening and now the connectivity has been stable for a few days now. Hopefully this keeps up...  but thanks to everybody for commenting and for AT&T reaching out to try to get started with troubleshooting.  Will revisit if necessary, but hopefully won't need to. 

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