Question Having high number of uncorrectables on modem + errors

[jellybeanx007]

I recently got Gigabit and have been facing issues with my modem. I have a Arris SB8200 for internet and Arris TM3402a for voice.

Background: I previously had a Cox DOCSIS 2.0 Modem (I had a 200 Mbps plan). The technician who installed the modem also included a 6 dB attenuator on the coax cable.

Current: I have used both a 2-way splitter (-3.5 dB) and a 4-way splitter (-7 dB), and I'm still facing uncorrectables and errors. Hardwired Internet speeds are good and I'm working on addressing the wifi issues from my AX88U router.

Thumbnails:

Downstream/Upstream -


Event Log -

 

[DaaQ]

Are you getting any packet loss or performance issues?

I recently got Gigabit and have been facing issues with my modem. I have a Arris SB8200 for internet and Arris TM3402a for voice.

Background: I previously had a Cox DOCSIS 2.0 Modem (I had a 200 Mbps plan). The technician who installed the modem also included a 6 dB attenuator on the coax cable.

Current: I have used both a 2-way splitter (-3.5 dB) and a 4-way splitter (-7 dB), and I'm still facing uncorrectables and errors. Hardwired Internet speeds are good and I'm working on addressing the wifi issues from my AX88U router.

Thumbnails:

Downstream/Upstream -
View attachment 25103View attachment 25106View attachment 25105

Event Log -
View attachment 25104

Edit, you want to be close to 0db, and those correctable / uncorrectable could have nothing to do with your data stream but more so either noise in the system, or symbol errors ect. Your MER SNR looks good.

 

[jellybeanx007]

Are you getting any packet loss or performance issues?

Edit, you want to be close to 0db, and those correctable / uncorrectable could have nothing to do with your data stream but more so either noise in the system, or symbol errors ect. Your MER SNR looks good.

No on packet loss; but there are times where the internet just hangs for a couple of seconds. On my last router, I was getting noticeable lag while playing online. I'm also getting 500/35 on a 1Gb/35 subscription hardwired.

 

[SamirD]

I'd call your isp--this sounds like something on their end/wiring/signal. They can run a ping to the modem and see what's going on.