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Forum Discussion
cax80 xfinity slow speeds netgear needs to fix this
another cax80 not getting full speed from xfinity there is a problem here just had a guy out to check the wires from xfinity and everything is great and tried to talk to xfinity and they sent signals...
carson_adkins wrote:
it's not the wifi the speeds I'm getting is 125Mbps the internal speed tester says 450Mbps when I pay for 1gig but I use wifi 6 on my Samsung s10 with the provided router from Xfinity and pull 800mbps they came out and said nothing is wrong with the wiring so it has to be Netgears problem with the software I use Xfinity speed tester and it says 125 Mbps so it's not Xfinity when their service works just fine over wireless with their router either it's how Netgear sets up their cable settings don't work with Comcast when it says it works with Comcast gig service
1. The built in speed test app rarely maxes out speeds. It uses speedtest and regularly chooses servers that are close but don't max out speeds. Its an issue netgear is aware of.
2. What devices is getting 125mbps? Is it on 2.4ghz or 5ghz?
3. Your samsung s10 is getting 800mbps over wireless? that's pretty impressive for wireless.
4. Do you have a hardwired device to test with? And what device is it? again, that's the key because wireless won't max it out and the built in testing isn't going to either.
5. Yes I do have xfinity. I can max out the gigabit link at 940(ish)mbps and my 2.5/5/10gbps link will max out 1150mbps. Thats on xfinity's speedtest site. And it does work fine with comcast.
also do you get error codes like this?
Time Priority Description
Thu Jul 9 13:00:00 2020 Notice (6) TLV-11 - unrecognized OID;CM-MAC=08:36:c9:3e:86:b8;CMTS-MAC=00:01:5c:82:fc:79;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:00:52 1970 Notice (6) Honoring MDD; IP provisioning mode = IPv6
Thu Jan 1 00:00:48 1970 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=08:36:c9:3e:86:b8;CMTS-MAC=00:01:5c:82:fc:79;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:00:44 1970 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=08:36:c9:3e:86:b8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:00:50 1970 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=08:36:c9:3e:86:b8;CMTS-MAC=00:01:5c:82:fc:79;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:00:44 1970 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=08:36:c9:3e:86:b8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Thu Jul 9 12:44:36 2020 Critical (3) Resetting the cable modem due to docsDevResetNow
Thu Jan 1 00:00:44 1970 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=08:36:c9:3e:86:b8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Wed Jul 8 13:01:15 2020 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=08:36:c9:3e:86:b8;CMTS-MAC=00:01:5c:82:fc:79;CM-QOS=1.1;CM-VER=3.1;
Wed Jul 8 12:54:03 2020 Critical (3) SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=08:36:c9:3e:86:b8;CMTS-MAC=00:01:5c:82:fc:79;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:00:50 1970 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=08:36:c9:3e:86:b8;CMTS-MAC=00:01:5c:82:fc:79;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:00:44 1970 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=08:36:c9:3e:86:b8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Wed Jul 8 12:51:01 2020 Critical (3) SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=08:36:c9:3e:86:b8;CMTS-MAC=00:01:5c:82:fc:79;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:03:18 1970 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=08:36:c9:3e:86:b8;CMTS-MAC=00:01:5c:82:fc:79;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:02:38 1970 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=08:36:c9:3e:86:b8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:01:26 1970 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=08:36:c9:3e:86:b8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Time Priority Description
Thu Jul 9 13:00:00 2020 Notice (6) TLV-11 - unrecognized OID;CM-MAC=08:36:c9:3e:86:b8;CMTS-MAC=00:01:5c:82:fc:79;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:00:52 1970 Notice (6) Honoring MDD; IP provisioning mode = IPv6
Thu Jan 1 00:00:48 1970 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=08:36:c9:3e:86:b8;CMTS-MAC=00:01:5c:82:fc:79;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:00:44 1970 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=08:36:c9:3e:86:b8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:00:50 1970 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=08:36:c9:3e:86:b8;CMTS-MAC=00:01:5c:82:fc:79;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:00:44 1970 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=08:36:c9:3e:86:b8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Thu Jul 9 12:44:36 2020 Critical (3) Resetting the cable modem due to docsDevResetNow
Thu Jan 1 00:00:44 1970 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=08:36:c9:3e:86:b8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Wed Jul 8 13:01:15 2020 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=08:36:c9:3e:86:b8;CMTS-MAC=00:01:5c:82:fc:79;CM-QOS=1.1;CM-VER=3.1;
Wed Jul 8 12:54:03 2020 Critical (3) SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=08:36:c9:3e:86:b8;CMTS-MAC=00:01:5c:82:fc:79;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:00:50 1970 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=08:36:c9:3e:86:b8;CMTS-MAC=00:01:5c:82:fc:79;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:00:44 1970 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=08:36:c9:3e:86:b8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Wed Jul 8 12:51:01 2020 Critical (3) SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=08:36:c9:3e:86:b8;CMTS-MAC=00:01:5c:82:fc:79;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:03:18 1970 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=08:36:c9:3e:86:b8;CMTS-MAC=00:01:5c:82:fc:79;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:02:38 1970 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=08:36:c9:3e:86:b8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:01:26 1970 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=08:36:c9:3e:86:b8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;