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Forum Discussion
New CAX30, Xfinity Issues
I was using an older Netgear Modem and Netgear Router and Comcast told me it was no longer in their recommendations. For a couple of years they told me I was at the 800Mbps service tier (started off...
What Firmware version is currently loaded?
Please post a copy and paste of the modems connection status and event log page.
https://kb.netgear.com/30007/How-do-I-obtain-the-cable-connection-information-from-a-NETGEAR-cable-modem-modem-router
https://kb.netgear.com/30008/How-do-I-view-or-clear-the-event-logs-on-my-NETGEAR-cable-modem-or-modem-router
Any Criticals, Errors or Warnings seen in the event logs needs to be reviewed and resolved by the ISP. Indicates a signal issue on the ISP line up to the modem.
Hardware Version
V1.01
Firmware Version
V2.2.4.2
Cable Firmware Version
V1.04.10
Connection Status
IP Address
xx.xx.xx.xx
2001:558:6017:43:d5fe:6c61:5418:349c
Subnet Mask
xx.xx.xx.xx
128
Default Gateway
xx.xx.xx.xx
fe80::21c:73ff:fe00:99
DHCP Server
0.0.0.0
DNS Server
75.75.75.75, 75.75.76.76
2001:558:feed::1
2001:558:feed::2
Lease Obtained
0 days, 2 hours, 0 minutes, 0 seconds
Lease Expires
0 days, 1 hours, 42 minutes, 19 seconds
Event Log
Time
Priority
Description
2025-05-16 08:14:01
Notice (6)
CM-STATUS message sent. Event Type Code: 24; Chan ID: 194; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2 3.;CM-MAC=2xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
2025-05-16 08:12:25
Notice (6)
CM-STATUS message sent. Event Type Code: 16; Chan ID: 194; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2 3.;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
2025-05-15 14:51:28
Critical (3)
UCD invalid or channel unusable;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
2025-05-15 14:51:28
Notice (6)
DS profile assignment change. DS Chan ID: 33; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
2025-05-15 14:51:27
Notice (6)
DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
1970-01-01 00:00:31
Notice (6)
Honoring MDD; IP provisioning mode = IPv6
1970-01-01 00:00:25
Critical (3)
UCD invalid or channel unusable;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
1970-01-01 00:00:24
Critical (3)
SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
2025-05-14 12:57:11
Critical (3)
UCD invalid or channel unusable;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
1970-01-01 00:00:26
Critical (3)
UCD invalid or channel unusable;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
1970-01-01 00:00:24
Critical (3)
SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
2025-05-14 10:19:21
Critical (3)
Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
There is more down the page for the connection status if you can post that as well.
For the event log, Any Criticals, Errors or Warnings seen in the event logs needs to be reviewed and resolved by the ISP. Indicates a signal issue on the ISP line up to the modem.
No. That was the complete Connection Status from the advanced page. I will have to get Comcast involved but not hopeful.