NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
jim-hanson
Jan 08, 2024Star
CAX 30 and XFinity Upload Speed
i have a cax 30 and my xfinity service is 1gb download, 100mb upload. i get somewhere between 500 and 800mb download (which i guess is okay) BUT my upload speed is stuck around 25mb (which is not...
- Jan 11, 2024
jim-hanson wrote:okay so . . .
1. i can't get nextgen service at this time regardless of my modem.
2. even if i did have nextgen service, my cax30 is not yet capable of that (even though it is a recommended device)
correct?
Your specific service address has not yet been updated to receive the Xfinity Next Gen service. Work in progress across the Xfinity service areas.
Your CAX30 does not have the updated firmware necessary to allow it to connect to the Xfinity Next Gen network. The list of devices approved for Next Gen network connection is updated by Xfinity every month or so.
Yes, correct.
FURRYe38
Jan 12, 2024Guru - Experienced User
Lots of Criticals that the ISP should look at. Something is out of tune on the ISP signal up to the modem.
What FW version is currently loaded on the gateway?
jim-hanson wrote:
yea, the 1gb, 100mb plan would be great if i could get close to that especially the upload. and i understand my modem maxes out below 1gb--that's fine. of course, someday i hope they'll get fiber here or real docsis 4.0. either would be great.
so i ended the split cable--it now goes directly into the router. did that around 210pm today (1410)
Time
Priority
Description
2024-01-11 14:19:41
Critical (3)
UCD invalid or channel unusable;CM-MAC=e0:46:ee:7e:a3:7b;CMTS-MAC=00:90:f0:29:07:00;CM-QOS=1.1;CM-VER=3.1;
2024-01-11 14:19:41
Notice (6)
DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=e0:46:ee:7e:a3:7b;CMTS-MAC=00:90:f0:29:07:00;CM-QOS=1.1;CM-VER=3.1;
1970-01-01 00:00:32
Notice (6)
Honoring MDD; IP provisioning mode = IPv6
1970-01-01 00:00:25
Critical (3)
UCD invalid or channel unusable;CM-MAC=e0:46:ee:7e:a3:7b;CMTS-MAC=00:90:f0:29:07:00;CM-QOS=1.1;CM-VER=3.1;
1970-01-01 00:00:25
Critical (3)
SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=e0:46:ee:7e:a3:7b;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
2024-01-11 14:17:43
Critical (3)
UCD invalid or channel unusable;CM-MAC=e0:46:ee:7e:a3:7b;CMTS-MAC=00:90:f0:29:07:00;CM-QOS=1.1;CM-VER=3.1;
2024-01-11 14:14:18
Critical (3)
SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=e0:46:ee:7e:a3:7b;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
2024-01-11 14:14:13
Critical (3)
Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=e0:46:ee:7e:a3:7b;CMTS-MAC=00:90:f0:29:07:00;CM-QOS=1.1;CM-VER=3.1;
2024-01-11 14:14:09
Critical (3)
SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=e0:46:ee:7e:a3:7b;CMTS-MAC=00:90:f0:29:07:00;CM-QOS=1.1;CM-VER=3.1;
2024-01-11 14:14:08
Critical (3)
Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=e0:46:ee:7e:a3:7b;CMTS-MAC=00:90:f0:29:07:00;CM-QOS=1.1;CM-VER=3.1;
2024-01-11 14:13:23
Critical (3)
SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=e0:46:ee:7e:a3:7b;CMTS-MAC=00:90:f0:29:07:00;CM-QOS=1.1;CM-VER=3.1;
2024-01-11 14:13:19
Critical (3)
SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=e0:46:ee:7e:a3:7b;CMTS-MAC=00:90:f0:29:07:00;CM-QOS=1.1;CM-VER=3.1;
2024-01-10 22:05:33
Critical (3)
UCD invalid or channel unusable;CM-MAC=e0:46:ee:7e:a3:7b;CMTS-MAC=00:90:f0:29:07:00;CM-QOS=1.1;CM-VER=3.1;
1970-01-01 00:00:26
Critical (3)
UCD invalid or channel unusable;CM-MAC=e0:46:ee:7e:a3:7b;CMTS-MAC=00:90:f0:29:07:00;CM-QOS=1.1;CM-VER=3.1;
jim-hanson
Jan 24, 2024Star
so turns out i can get 100 mb uploads.
i rented an xfinity xb8 and i am getting 100 mb uploads. (the download speeds are in the 400s which isn't very impressive given i have a 1gb package but i guess is fine enough)
i am probably going to return my cax 30 and get a next gen approved modem/router.
- FURRYe38Jan 24, 2024Guru - Experienced User
Would need to have the ISP clear the items mentioned in the CAX30s logs.
Its up to the ISP to support the CAX series on there system and with all the new changes going on at this level, may or may not be supported at this time or in your specific area:
Something to keep an eye on. I'd probably wait for the ISP to get everything all implemented and working then make the jump to a supported modem of your own.