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Very poor performance inside Comcast backbone - Can I route around that?
- Thread starter philb2
- Start date
Easiest way to get around this problem is to change the mac address on the wan side of your router to something else and then reboot everything to get a new public IP address that hopefully won't have the issue. In my experience unless you can get to network operations to tell them the problem (I've had this happen once since the 1990s), it will never be fixed.
SamirD
I am not sure that will work. The bottlenecks are many hops away from me, so I suspect the bottlenecks are only a few hops from the destination. I hope I'm expressing myself clearly.
Getting to Comcast network operations? I'll bet that's a level 3 discussion. I doubt if even the level 2's would have the ability to influence network operations. If I wasn't so deep into Comcast's pocket, especially with email addresses, I would just consider another service. But I am. However, I'm not sure that Verizon or AT&T would be any better.
Nicklebon
[H]ard|Gawd
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You, as a residential subscriber, will never speak to or even come close to network ops at any major ISP nor will anyone at the ISP that you do speak to. If there actually is an issue you discovered with something as simple as pathping they already know about it as would be impacting thousands or possibly all of their users.
I don't doubt it, but it's amazing how many different paths various IPs take and you'll probably luck out with an IP that's not suffering from the same problem as the one you currently have.
Yep, that's L3 and pretty much impossible. Every ISP has their ups and downs in my experience, and all of them essentially are great until they aren't. I didn't have any issues with comcast for 4 years until this year when we were out for a full 3 days and couldn't be up any quicker. I went out that day and got a t mobile cellular connection since my wife couldn't work without proper Internet. I had been telling her we needed dual wan for years but she didn't listen until we had the issue. Now we have two but we will see if I keep comcast since my rates get jacked up in Aug.
In my experience, it all depends on how good the NOC is. I've usually found issues before they have and I've seen issues take years to get resolved.
Nicklebon
[H]ard|Gawd
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NVM I actually looked at the txt ....Another of the OP's classics lol I'm out. /smh
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That's complete BS. There was a significant issue with the node in our neighborhood and no matter how many times it was reported and numerous techs came out, it was never fixed.
We eventually had to give up and get fiber, which was a blessing. Comcast is one of the most dysfunctional and incompetent companies I have ever dealt with.
Nicklebon
[H]ard|Gawd
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Assuming Comcast operates like spectrum/old twc, nodes are field ops, not netops. Netops isn't monitoring that at all. As for EU speaking to netops TBC I'm not saying it's good. I'm just saying it's reality. Too many people can't spell IP and see something like the OP posted in their output text and think it's a problem. Most l1 and l2 phone techs can barely spell IP and certainly can't troubleshoot it. They're mostly script jockeys. Again, I'm out of this thread.
Last edited:
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anything outside of the first 1-4 hops is usually the ISP, sometimes only 1 or 2, so it might not even be comcast.
Get a VPN service like Mullvadd or Nord just to test, as that "should" give you a different route to test.
Also, just because a node does not respond to ping/ICMP, does not mean it is not working properly, plenty of network routes/devices drop ICMP.
Get a VPN service like Mullvadd or Nord just to test, as that "should" give you a different route to test.
Also, just because a node does not respond to ping/ICMP, does not mean it is not working properly, plenty of network routes/devices drop ICMP.
Or let us know the ip's and we can post our pathpings or trace routes or just pings. That's a quick way to figure out if it's an isp issue or something else. There's a free online ping program I used once for the same thing--diagnosing an ISP--let me see if I can find it. Found it. https://ping.pe/
Still having trouble?
My general experience with Comcast is that if issues like this pop up they tend to get magically resolved in the middle of the night a few days later. Just enough time to call 2-3 times, end up with a tech appointment, tech finds nothing wrong with the line, and then the night after the tech visit it gets fixed while I'm sleeping. Most of the time this happens after upgrade work or an outage. In other words they upgraded or fixed something, didn't get it quite right, then fixed the issue on their end in the maintenance window. I'm kind of stuck with them here and have had Comcast since 2017. AT&T fiber is a few blocks away and will probably get to me eventually, but unless things get worse I don't think I would switch. It's basically been maybe 3-4 periods of slow/glitchy for a for a few days out of 9 years.
My general experience with Comcast is that if issues like this pop up they tend to get magically resolved in the middle of the night a few days later. Just enough time to call 2-3 times, end up with a tech appointment, tech finds nothing wrong with the line, and then the night after the tech visit it gets fixed while I'm sleeping. Most of the time this happens after upgrade work or an outage. In other words they upgraded or fixed something, didn't get it quite right, then fixed the issue on their end in the maintenance window. I'm kind of stuck with them here and have had Comcast since 2017. AT&T fiber is a few blocks away and will probably get to me eventually, but unless things get worse I don't think I would switch. It's basically been maybe 3-4 periods of slow/glitchy for a for a few days out of 9 years.
???
And you are being understated here. Of course, some of the airlines and utility companies would beg to differ with you.