Visitor
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3 Messages
Latency spike every 11 minutes
I've seen a couple of threads reported on here regarding a high latency spike received every 11 minutes, just like clockwork. What I unfortunately have not seen is a fix on any of the threads. I swapped my modem out at the Xfinity store but that has not fixed the issue. I also have the issue across multiple devices on my network, and the problem hits at exactly the same time. I know this is not my equipment, as I've run constant pings to my wireless router, and through my wireless router to the XB6 Archer X1 gateway IP 10.0.0.1, without seeing the latency. Where I do see the latency is if I have a ping running to an external IP, 4.2.2.2, 8.8.8.8, etc. I think my last resort is to get a technician out to my house.
I happened to stumble upon my first public IP hop being an IP address within the RFC6598 space and thought I may have been on to something, but as I read this more and educated myself more on RFC6598, I am pretty sure this shared address space is similar to RFC1918 space, but used for Service Providers. I was at first thinking RFC5968 worked like Microsoft APIPA, where a router or other infrastructure device may automatically assign a shared address in the event there was a duplicate IP address detected, but after further reading, I'm fairly certain the RFC5968 is configured manually, is not an automatic addressing, and a feature to help save the rapidly depleting IPv4 IP addresses, which makes it similar to RFC1918 but specifically used for Service Providers. I really hope I can get this figured out, as I spend a fair amount of my free time gaming and the lag spikes that hit are not a fun experience, especially in fast-paced competitive games like Rocket League.
Shared Address Space is distinct from RFC 1918 private address spacebecause it is intended for use on Service Provider networks.However, it may be used in a manner similar to RFC 1918 privateaddress space on routing equipment that is able to do addresstranslation across router interfaces when the addresses are identicalon two different interfaces.
XfinityBillie
Official Employee
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3.6K Messages
11 months ago
@krump1e We appreciate your time in reaching out to us here on our Xfinity Forums and for providing us the troubleshooting steps you have already taken. I'd love to take a closer look on our end. Please send us a DM to Xfinity Support with your full name and address to get started.
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krump1e
Visitor
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3 Messages
11 months ago
RESOLVED!!! I swapped my XB6 modem on Friday night, and this did not resolve the issue. Called Xfinity Tech Support over the weekend and got a technician lined up for today. During the call with Tech Support this weekend, I was informed that on 9/5, the bootfile on my modem uplifted from 1Gb/s to 2Gb/s, however, the XB6 modem does not support 2Gb/s, it only supports 1Gb/s. Setup a dispatch for today to send a technician today (9/17) to send a technician out. The technician spent some time testing line signal from outside, and apparently swapped some termination items which apparently had started to oxidize. Had also swapped the modem from XB6 to XB7. So far today, i have been running without the consistent 11 min latency spikes I was receiving earlier.
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