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Hitron CODA, upload speeds intermittently fluctuating
I ran into some information that suggested I contact the Xfinity Digital Care team. From what I understand, they have access to tier-2 backend tools that can fix a specific Hitron CODA provisioning glitch.
I recently upgraded from a Motorola MB7220 modem to a Hitron CODA modem. The Hitron CODA modem is in the next-gen tier, and supports 934 Mbps download speeds and 100 Mbps upload speeds: https://www.xfinity.com/support/internet/customerowned. Here is a screenshot of the section: https://drive.google.com/file/d/1Z1cKL15zfy7r7YeYNgU6fEtq_BvM5a2U/view?usp=sharing.
I switched my Internet plan from the legacy 300 "Connect More" tier to the modern 300 tier. The modern 300 tier is listed to have typical download speeds of 352 Mbps and typical upload speeds of 117 Mbps. I've been performing recurring speedtests on the device wired directly into the modem (sometimes a laptop; sometimes a router; not a device indirect to the modem that's, for example, on the WLAN broadcasted by my router). I monitor my LAN's traffic on my router's dashboard. My download speeds are stable at ~350 Mbps, even though my LAN has more download activity. My upload speeds are intermittently fluctuating between 20 Mbps and 120 Mbps, even though the upload activity is, at most, 2 Mbps bursts, coming from the Xfinity cameras. Here is a screenshot of a speedtest done on the TP-Link Deco M9 Plus dashboard: https://drive.google.com/file/d/1QEQ8V0Id4jzWWRHQiL1RqV4--CJRMdhh/view?usp=sharing.
I've contacted several Xfinity live agents who claim they have provisioned my modem with the latest bootfile and sent refresh signals. When I power cycle the modem, the upload speed initially hits 120 Mbps, as expected, but eventually degrades.
I've inspected my modem's upstream overview dashboard, and under DOCSIS mode column, DOCSIS 3.0 ATDMA is listed across all channels. I was expecting, with the latest bootfile, for it to list DOCSIS 3.1 OFDMA, indicating that it's using the new next-gen/mid-split profile. Here is a screenshot of the Hitron CODA modem's upstream overview: https://drive.google.com/file/d/1IgYmYu8z4EzAvnvOeUHr9kMYydYNSe9H/view?usp=sharing.
Some information suggested that my CMTS (Cable Modem Termination System) profile cache be cleared.
Any thoughts? Please advise.
Thanks.
user_8684so
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41 Messages
9 hours ago
After 3 weeks of using the Xfinity Gateway CGM4981COM XB8 to troubleshoot, I'm going to swap it back with the Hitron CODA. I want to simplify my infrastructure, and it's annoying having to be aware that, when the XB8 is serviced in such a way that disables bridge mode, the XB8 can steer my Xfinity cameras away from the network I want my cameras to be on. The CODA performs slightly better too, for whatever reason.
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