*** This post was last edited May 2, 2017 ***
Good morning Community,
As I mentioned in a post two days ago, we have received the next firmware 2.0.10.20 from Hitron. We are currently running initial testing on this version and will push it out to participants in the firmware trial program as soon as it passes initial testing.
However, while running these tests, we discovered abnormal behavior with ICMP and are awaiting feedback from Hitron today to asses how this will be addressed. As soon as I this is confirmed, I’ll update the change log with the correct version information and start pushing it out.
In parallel, we are still working on the following high priority items. In some cases below, I requested affected customers to reach out to me via private message. If you do so, please include your modem MAC address in the subject line (even if we exchange messages daily) as there are a lot of you reaching out to me daily 🙂
UDP Packet Loss
The investigation for what has been reported as UDP packet loss is still ongoing. We have deployed a probe at one fellow forum member on both a CODA-4582 and a CGNM-3552 to collect additional data. We are actively working with Hitron and Intel on the results observed.
Based on what we know so far, in most instances UDP packet loss is coupled with higher uplink usage in the area. Although the impact is noticeable in specific logs (League of Legends), the root cause for the perceivable impact (while playing) is likely related to bufferbloat (see next issue).
Bufferbloat
When comparing the performance of a CODA-4582 to a CGNM-3552 in the same network conditions, the CODA-4582 consistently reports higher bufferbloat when tested on DSLReports.
Update April 12: The solution for this problem will come in two folds. It will require a change in software which will possibly be included in 2.0.10.27 but more likely in 2.0.10.28 and a change in network configuration.
The network configuration change is not compatible with the current firmware so this change will only come after a vast majority of the modems are running the new code. We are however looking at a way to make the change only for specific modems to support testing in the community.
Update April 22: This problem seems resolved in firmware 2.0.10.27
5 GHz WiFi Low range for channels 36 to 48
Lower WiFi channels on the modem have a much smaller range. This is due in part to the limit imposed by Industry Canada to maximum transmit power.
Furthermore, the current automatic channel selection (auto mode) tends to select the lower channels when in similar load conditions.
Workaround: manually select higher channels (149-153-157-161)
Update April 22: The channel selection algorithm has been improved in firmware 2.0.10.27
Loss of OFDM Channel Lock
Under some RF conditions, the modem fails to lock properly on the OFDM channel. This typically result in variable performance.
Update April 12: This problem is resolved in 2.0.10.26T2
List of connected device does not get fully populated
This is a known issue that has been tracked since firmware 2.0.10.13. We are making improvements at every firmware but it is not a perfect system.
The situation is worst after a reboot or firmware upgrade as the list gets reset and must be repopulated as devices renew their DHCP lease.
NAT Loopback not working for wired clients
When setting up port forwarding to an internal server, it is possible for a client on WiFi to reach the server using the external IP/port. If the client is on a wired interface, it doesn't work.
Update April 12: This problem is resolved in 2.0.10.26T2 (not confirmed)
LAN Counters not working
Some customers reported that LAN counters (especially in bridge mode) are reporting inaccurate values.
This problem has been reported to Hitron for investigation.
Unexpected modem reboot
Some customers reported their modem reboots unexpectedly. We have also seen this behavior in our lab.
Update April 12: This problem is resolved in 2.0.10.26T2
Missing SC-QAM Channels
After a reboot, some modems are missing SC-QAM channels. A fix has been implemented in 2.0.10.26T2 to address this behavior but it has not corrected all scenarios.
Investigation continues with Hitron.
WiFi Survey
The WiFi Survey functionality in firmware 2.0.10.26T2 (and possibly before) reports incorrect SSID names.
Guest Network
When connecting to the Guest Network, an error message is displayed "only allow DHCP client to use this wireless". This has been reported in firmware 2.0.10.26T2.
Update April 22: This issue has been resolved in firmware 2.0.10.27
Update May 2: It seems this issue is not fully resolved and still experienced by some users
Future Planned Improvements
The following are items that we are working on in parallel of the above.
- Improvement in WiFi speeds
- Improvement in latency / bufferbloat
Dave
*Edited Labels*
@RogersDave here is my first test on .24 and jitter still high , here is a look at my down and up signals since .24 @RogersDave
1 591000000 256QAM 6.500 7 38.983
2 567000000 256QAM 6.500 3 40.366
3 573000000 256QAM 6.200 4 38.983
4 579000000 256QAM 6.200 5 38.983
5 585000000 256QAM 6.700 6 40.366
6 561000000 256QAM 6.700 2 40.946
7 597000000 256QAM 6.500 8 38.983
8 603000000 256QAM 6.800 9 40.946
9 609000000 256QAM 7.100 10 38.983
10 615000000 256QAM 7.200 11 38.983
11 621000000 256QAM 7.300 12 40.366
12 633000000 256QAM 7.000 13 38.983
13 639000000 256QAM 7.400 14 38.983
14 645000000 256QAM 7.500 15 38.983
15 651000000 256QAM 7.400 16 38.983
16 657000000 256QAM 7.500 17 40.366
17 663000000 256QAM 7.300 18 38.605
18 669000000 256QAM 7.600 19 38.983
19 675000000 256QAM 7.400 20 38.605
20 681000000 256QAM 6.900 21 38.983
21 687000000 256QAM 6.700 22 38.983
22 693000000 256QAM 6.500 23 38.983
23 699000000 256QAM 6.600 24 38.605
24 705000000 256QAM 6.500 25 38.983
25 711000000 256QAM 6.100 26 38.605
26 717000000 256QAM 6.100 27 38.983
27 723000000 256QAM 6.200 28 38.605
28 825000000 256QAM 5.500 29 37.636
29 831000000 256QAM 5.200 30 37.636
30 837000000 256QAM 5.000 31 37.636
31 843000000 256QAM 5.300 32 37.636
32 555000000 256QAM 6.800 1 40.366
OFDM Downstream Overview
Receiver FFT type Subcarr 0 Frequency(MHz) PLC locked NCP locked MDC1 locked PLC power(dBmv)
0 4K 275600000 YES YES YES 3.799999
1 NA NA NO NO NO NA
Upstream Overview
Port ID Frequency (MHz) Modulation Signal strength (dBmV) Channel ID Bandwidth
1 30596000 ATDMA - 64QAM 34.250 1 6400000
2 38595824 ATDMA - 64QAM 37.750 3 3200000
3 23700000 ATDMA - 64QAM 33.000 2 6400000
OFDM/OFDMA Overview
Channel Index State lin Digital Att Digital Att BW (sc's*fft) Report Power Report Power1_6 FFT Size
0 DISABLED 0.5000 0.0000 0.0000 -inf -1.0000 4K
1 DISABLED 0.5000 0.0000 0.0000 -inf -1.0000 4K
@Hwaiting wrote:Received .24 and for the first I'm seeing missing channels on my original non-black dot CODA. Did a soft reboot and still missing. I guess it's time to swap mine?
I just ran an interference test on your modem and yes it should be replaced.
@lethalsniper wrote:@RogersDave here is my first test on .24 and jitter still high , here is a look at my down and up signals since .24
The problem in your area is still high usage on the uplink direction which causes higher jitter.
@jjunge wrote:@RogersDave Dave - I'm still unable to get any of my wired devices to connect including my VOIP. Also, I'm now missing channel 20 with a black dot CODA - can you tell me if this is a fluke or requires a modem replacement? Also, Can you do me a favour and put me back on .19 so i can see if that resolves this ethernet issue?
Thank you.
Jason
Your channel running at 573 MHz seems to be impacted. I would therefore recommend a replacement.
I will roll back .19 for you.
@mikeepolmic wrote:Firmware .19 - STILL having to reboot every 4-6 hours as I lose internet connection, both wired and wireless ... by the way, do these specs look right?
Your modem is completely out of spec and will require a technician's visit to address this.
Regarding the need for reboot every 4-6 hours, the new firmware might greatly help with that. To join the trial, send a private message to @CommunityHelps and make sure to include your modem MAC address and serial number.
Dave
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