Newbie Seeking - Router Having 2.4MHz Radio Turned OFF - DPC3941T
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01-30-2022 11:06 AM
Hello All,
I have been hit with an issue I can’t seem to figure out…
My DPC3941T running on Xfinity has consistently been having its 2.4 MHz radio transmitter deactivated in the 3-4am hour the last five nights. The 5 MHz transmitter continues to work fine but all the 2.4 devices are offline.
Xfinity support denies any system maintenance or signal ever sent to physically shut-off the 2.4 radio. I can 10.0.0.1 login and the 2.4 radio is “inactive” with the EDIT button greyed out. If EDIT is clicked it throws a popup declaring the Admin has switched off the radio. Only a factory reset,…reactivate router through Xfinity signal…will switch the OFF radio back ON and it works fine until the 3am hour.
Any suggestions or ideas would be appreciated. Thank You in advance.
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Wireless Security
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02-19-2022 01:20 AM
Sorry not familiar with that product but it is obsolete https://www.cisco.com/c/en/us/obsolete/video/cisco-dpc3941-wireless-residential-gateway-with-digital-voice.html so you should probably be asking Xfinity for a new router.
Please click Helpful if this post helped you and Select as Solution (drop down menu at top right of this reply) if this answered your query.
------------------------------
TAC recommended codes for AireOS WLC's and TAC recommended codes for 9800 WLC's
Best Practices for AireOS WLC's, Best Practices for 9800 WLC's and Cisco Wireless compatibility matrix
Check your 9800 WLC config with Wireless Config Analyzer using "show tech wireless" output or "config paging disable" then "show run-config" output on AireOS and use Wireless Debug Analyzer to analyze your WLC client debugs
Field Notice: FN63942 APs and WLCs Fail to Create CAPWAP Connections Due to Certificate Expiration
Field Notice: FN72424 Later Versions of WiFi 6 APs Fail to Join WLC - Software Upgrade Required
Field Notice: FN72524 IOS APs stuck in downloading state after 4 Dec 2022 due to Certificate Expired
- Fixed in 8.10.196.0, latest 9800 releases, 8.5.182.12 (8.5.182.13 for 3504) and 8.5.182.109 (IRCM, 8.5.182.111 for 3504)
Field Notice: FN70479 AP Fails to Join or Joins with 1 Radio due to Country Mismatch, RMA needed
How to avoid boot loop due to corrupted image on Wave 2 and Catalyst 11ax Access Points (CSCvx32806)
Field Notice: FN74035 - Wave2 APs DFS May Not Detect Radar After Channel Availability Check Time
Leo's list of bugs affecting 2800/3800/4800/1560 APs
Default AP console baud rate from 17.12.x is 115200 - introduced by CSCwe88390
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09-22-2022 01:44 AM - edited 09-22-2022 01:46 AM
Unfortunately the same thing is happening to me---Except no service at all-- Indicator Lights UP as if normaI; connected to Gateway, but NOT to the internet.
I turned that one into xFinity <10d ago, because eventually it wouldn't connect anymore--even during the daytime, nor after multiple resets/reboots. Of course Comcast/xFi issued me EXACT SAME EOL MODEL! The difference? Newly shrink-wrapped!
I typically schedule my online tasks for the middle of night when I'm most focused and productive.
They seem to have the firmware as up to date as possible, but what gives with issuing any Gateway with a declared Manufacturer EOL years prior?
Anyway, I'll go to xFinity forum since I'm right back with same problem again.
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09-22-2022 04:33 AM
This is really something you can only take up with your service provider directly.
Some service providers customise the config of the devices they provide and may even have custom firmware provided by Cisco so only they can support the device they have supplied. If they can't give you a working device then find another service provider who can.
Please click Helpful if this post helped you and Select as Solution (drop down menu at top right of this reply) if this answered your query.
------------------------------
TAC recommended codes for AireOS WLC's and TAC recommended codes for 9800 WLC's
Best Practices for AireOS WLC's, Best Practices for 9800 WLC's and Cisco Wireless compatibility matrix
Check your 9800 WLC config with Wireless Config Analyzer using "show tech wireless" output or "config paging disable" then "show run-config" output on AireOS and use Wireless Debug Analyzer to analyze your WLC client debugs
Field Notice: FN63942 APs and WLCs Fail to Create CAPWAP Connections Due to Certificate Expiration
Field Notice: FN72424 Later Versions of WiFi 6 APs Fail to Join WLC - Software Upgrade Required
Field Notice: FN72524 IOS APs stuck in downloading state after 4 Dec 2022 due to Certificate Expired
- Fixed in 8.10.196.0, latest 9800 releases, 8.5.182.12 (8.5.182.13 for 3504) and 8.5.182.109 (IRCM, 8.5.182.111 for 3504)
Field Notice: FN70479 AP Fails to Join or Joins with 1 Radio due to Country Mismatch, RMA needed
How to avoid boot loop due to corrupted image on Wave 2 and Catalyst 11ax Access Points (CSCvx32806)
Field Notice: FN74035 - Wave2 APs DFS May Not Detect Radar After Channel Availability Check Time
Leo's list of bugs affecting 2800/3800/4800/1560 APs
Default AP console baud rate from 17.12.x is 115200 - introduced by CSCwe88390
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09-26-2022 11:07 PM
Thanks for responding! I get what you're saying but where I live, xFinity/comcast essentially has a monopoly on high speed internet services & TV cable.
- I received an announcement email about company rolling out changes to website & and I'm concluding that at least partial blame is on company testing shyte in the middle of night and my 2nd gateway may work fine at this time.
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09-27-2022 05:36 AM
For the "historians" here is the data sheet of the router: https://www.dslreports.com/r0/download/2234717~41385a0f2e778ed11c009a204b796cad/C78-733352-00.pdf
It has parental controls built in, maybe somebody activated those in error?
