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CM500 only one upstream channel and frequent disconnects
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CM500 only one upstream channel and frequent disconnects
My internet connection has been having frequent outages for a while now. I noticed the upstream light on my modem was solid amber and after looking at how to fix that I saw recommendations to look at the cable connection and event logs of the modem. I saw I only have 1 upstream channel and my modem says I should have 4. Any advice on how to fix this?
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Re: CM500 only one upstream channel and frequent disconnects
You have a lot of errors in your lines.
Remove any splitters, amplifiers, attenuators from your line. Try and hook the modem to right where the coax enters the home. If you still continue to have signal issues like that, your isp needs to check your lines.
also in AP setup: RAXE500->EAX80
1.4gig download/100mbps upload from Xfinity
We’re members of the public helping out on our own time.
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Re: CM500 only one upstream channel and frequent disconnects
WHat can I learn from Critical and Warning entries in my Event Log? I'd like to separate findings that are my responsibility from those of my ISP. EX:
Critical (3) No Ranging Response received - T3 time-out;
Critical (3) Unicast Ranging Received Abort Response - Re-initializing
Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
Critical (3) Started Unicast Maintenance Ranging - No Response received -
Unicast DSID PSN startup error
No UCDs Received - Timeout
SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;
SYNC Timing Synchronization failure - Failed to acquire FEC framing
DHCP WARNING - Non-critical field invalid in response
Honoring MDD; IP provisioning mode = IPv4
Are there docs for these logs?
Thanks!
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Re: CM500 only one upstream channel and frequent disconnects
@westerj Please start your own thread. Include screen snips of the logs and cable connections page. Easier to read.
some basic info
https://pickmymodem.com/signal-levels-docsis-3-03-1-cable-modem/
also in AP setup: RAXE500->EAX80
1.4gig download/100mbps upload from Xfinity
We’re members of the public helping out on our own time.
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