I have a Deco X90 network with 3 units connected by wired LAN.

The main unit is next to the main house router.

The other two satellite units are also on wired LAN (connected via switches) our of WIFI range of each other.

The Decos are configured as APs.

The setup has always been touchy to start.

When operating, the Decos will occasionally turn red. Removing one of the satellites seems to improve the situation (interval between failure lengthened dramatically).

When the Decos turn red, it also seems to affect the rest of devices connected to the wired internet.

They usually report - "Connected without internet"

When connected by WIFI, devices would flash the report - "cannot access private DNS...."

BTW, prior to this nightmare, I also have similar problem with Deco M9s.

For comparison, I have a network of Deco M5s that have been in use for more than 1 year - though they too have occasional network freezes.

I did setup the X90s & the returned M9s at my home for 1 week without failure.

The main difference is at home, only the main unit is connected by wire but the satellites are all by wireless only.

Some extracts of the logs I downloaded from the main unit:

Critical:

Mon Mar 29 17:03:58 2021 user.emerg logx: tp217,505[20487]:
Mon Mar 29 17:05:08 2021 user.emerg logx: tp217,505[21762]:
Mon Mar 29 17:10:28 2021 user.emerg logx: tp217,505[26874]:
Mon Mar 29 17:12:39 2021 user.emerg logx: tp217,505[29221]:
Mon Mar 29 17:13:39 2021 user.emerg logx: tp217,505[30384]:
Mon Mar 29 17:15:19 2021 user.emerg logx: tp217,505[32214]:
Mon Mar 29 17:15:59 2021 user.emerg logx: tp217,505[529]:
Mon Mar 29 17:16:20 2021 user.emerg logx: tp215,22[1030]:
Mon Mar 29 17:16:28 2021 user.emerg logx: tp217,505[1480]:
Mon Mar 29 17:21:08 2021 user.emerg logx: tp217,505[6441]:
Mon Mar 29 17:21:13 2021 user.emerg logx: tp215,22[6646]:
Mon Mar 29 17:23:09 2021 user.emerg logx: tp217,505[9488]:
 

Warning:

Mon Mar 29 17:23:07 2021 daemon.err udhcpc[6393]: Received SIGTERM
Mon Mar 29 17:23:07 2021 daemon.err conn-indicator: [send_query] Failed to send DNS query: Network is unreachable
Mon Mar 29 17:23:07 2021 daemon.err nrd[10600]: triggerMonSteering: Failed to get uplink rssi for FE:7B:A0:81:3C:E5
Mon Mar 29 17:23:08 2021 daemon.err udhcpc[9372]: udhcpc (v1.22.1) started
Mon Mar 29 17:23:08 2021 daemon.err udhcpc[9372]: Sending discover...
Mon Mar 29 17:23:08 2021 daemon.err udhcpc[9372]: Sending select for 192.168.0.100...
Mon Mar 29 17:23:08 2021 user.err lua: Error: ssh_connect: Failed to connect: Network is unreachable
Mon Mar 29 17:23:08 2021 user.err lua: Error: connect
Mon Mar 29 17:23:08 2021 daemon.err client_mgmt: sendto
Mon Mar 29 17:23:08 2021 daemon.err client_mgmt: sendto
Mon Mar 29 17:23:08 2021 daemon.err client_mgmt: sendto
Mon Mar 29 17:23:08 2021 daemon.err client_mgmt: sendto
Mon Mar 29 17:23:08 2021 daemon.err client_mgmt: sendto
Mon Mar 29 17:23:08 2021 daemon.err client_mgmt: sendto
Mon Mar 29 17:23:08 2021 daemon.err client_mgmt: sendto
Mon Mar 29 17:23:08 2021 daemon.err client_mgmt: sendto
Mon Mar 29 17:23:09 2021 user.emerg logx: tp217,505[9488]:
Mon Mar 29 17:23:12 2021 daemon.err nrd[10600]: triggerMonSteering: Failed to get uplink rssi for 92:03:8C:56:61:23
Mon Mar 29 17:23:12 2021 daemon.err nrd[10600]: estimatorDot11kIterateCB: Timeout waiting for 802.11k response from FE:7B:A0:81:3C:E5
Mon Mar 29 17:23:18 2021 daemon.err nrd[10600]: _bcm_wlanifBSteerEventsHandleRRMReportInd: NULL data
Mon Mar 29 17:23:18 2021 daemon.err nrd[10600]: estimatorCmnHandleBeaconReportEvent: Invalid beacon report for DA:8F:69:8F:6F:23
Mon Mar 29 17:23:19 2021 daemon.err nrd[10600]: ar_pat_calc_cand_datarate[line 849]: estimated pat datarate is 0 at index 7, apMac: C0C9E3F6688D
Mon Mar 29 17:23:21 2021 daemon.err nrd[10600]: estimatorDot11kIterateCB: Timeout waiting for 802.11k response from FE:7B:A0:81:3C:E5
Mon Mar 29 17:23:24 2021 daemon.err nrd[10600]: ar_pat_calc_cand_datarate[line 849]: estimated pat datarate is 0 at index 8, apMac: C0C9E3F6688D
Mon Mar 29 17:23:27 2021 daemon.err nrd[10600]: estimatorDot11kIterateCB: Timeout waiting for 802.11k response from 92:03:8C:56:61:23
Mon Mar 29 17:23:30 2021 daemon.err nrd[10600]: estimatorDot11kIterateCB: Timeout waiting for 802.11k response from FE:7B:A0:81:3C:E5
Mon Mar 29 17:23:30 2021 daemon.err nrd[10600]: ar_pat_calc_cand_datarate[line 849]: estimated pat datarate is 0 at index 8, apMac: C0C9E3F6688D
Mon Mar 29 17:23:35 2021 daemon.err nrd[10600]: ar_pat_calc_cand_datarate[line 849]: estimated pat datarate is 0 at index 7, apMac: C0C9E3F6688D
Mon Mar 29 17:23:36 2021 daemon.err nrd[10600]: ar_pat_calc_cand_datarate[line 849]: estimated pat datarate is 0 at index 8, apMac: C0C9E3F6688D
Mon Mar 29 17:23:39 2021 daemon.err nrd[10600]: estimatorDot11kIterateCB: Timeout waiting for 802.11k response from FE:7B:A0:81:3C:E5
Mon Mar 29 17:23:45 2021 daemon.err nrd[10600]: estimatorDot11kIterateCB: Timeout waiting for 802.11k response from DA:8F:69:8F:6F:23
Mon Mar 29 17:23:48 2021 daemon.err nrd[10600]: estimatorDot11kIterateCB: Timeout waiting for 802.11k response from FE:7B:A0:81:3C:E5
Mon Mar 29 17:23:52 2021 daemon.err nrd[10600]: =jacob=> _bcm_wlanifBSteerEventsHandleRRMReportInd: copy in channel=3
Mon Mar 29 17:23:52 2021 daemon.err nrd[10600]: ar_pat_calc_cand_datarate[line 849]: estimated pat datarate is 0 at index 8, apMac: C0C9E3F6688D
Mon Mar 29 17:23:57 2021 daemon.err nrd[10600]: estimatorDot11kIterateCB: Timeout waiting for 802.11k response from FE:7B:A0:81:3C:E5
Mon Mar 29 17:23:58 2021 daemon.err nrd[10600]: ar_pat_calc_cand_datarate[line 849]: estimated pat datarate is 0 at index 8, apMac: C0C9E3F6688D
Mon Mar 29 17:24:03 2021 daemon.err nrd[10600]: ar_pat_calc_cand_datarate[line 849]: estimated pat datarate is 0 at index 7, apMac: C0C9E3F6688D
Mon Mar 29 17:24:06 2021 daemon.err nrd[10600]: estimatorDot11kIterateCB: Timeout waiting for 802.11k response from FE:7B:A0:81:3C:E5
Mon Mar 29 17:24:08 2021 daemon.err nrd[10600]: ar_pat_calc_cand_datarate[line 849]: estimated pat datarate is 0 at index 7, apMac: C0C9E3F6688D
Mon Mar 29 17:24:14 2021 daemon.err nrd[10600]: estimatorDot11kIterateCB: Timeout waiting for 802.11k response from FE:7B:A0:81:3C:E5
Mon Mar 29 17:24:17 2021 daemon.err nrd[10600]: estimatorDot11kIterateCB: Timeout waiting for 802.11k response from 92:03:8C:56:61:23
Mon Mar 29 17:24:20 2021 daemon.err nrd[10600]: netdb_resolveRemoteBSSFromBSSID: invalid band for bss 00:00:00:00:00:00
Mon Mar 29 17:24:20 2021 daemon.err nrd[10600]: estimatorCmnHandleBeaconReportEvent: Beacon report for STA 92:03:8C:56:61:23 in unexpected state 2
 

Errors:

Mon Mar 29 17:22:02 2021 daemon.err nrd[10600]: estimatorDot11kIterateCB: Timeout waiting for 802.11k response from FE:7B:A0:81:3C:E5
Mon Mar 29 17:22:07 2021 daemon.err nrd[10600]: ar_pat_calc_cand_datarate[line 849]: estimated pat datarate is 0 at index 8, apMac: C0C9E3F6688D
Mon Mar 29 17:22:11 2021 daemon.err nrd[10600]: estimatorDot11kIterateCB: Timeout waiting for 802.11k response from FE:7B:A0:81:3C:E5
Mon Mar 29 17:22:13 2021 daemon.err nrd[10600]: =jacob=> _bcm_wlanifBSteerEventsHandleRRMReportInd: copy in channel=3
Mon Mar 29 17:22:13 2021 daemon.err nrd[10600]: ar_pat_calc_cand_datarate[line 849]: estimated pat datarate is 0 at index 8, apMac: C0C9E3F6688D
Mon Mar 29 17:22:19 2021 daemon.err nrd[10600]: estimatorDot11kIterateCB: Timeout waiting for 802.11k response from FE:7B:A0:81:3C:E5
Mon Mar 29 17:22:19 2021 daemon.err nrd[10600]: ar_pat_calc_cand_datarate[line 849]: estimated pat datarate is 0 at index 8, apMac: C0C9E3F6688D
Mon Mar 29 17:22:21 2021 daemon.err nrd[10600]: ar_pat_calc_cand_datarate[line 849]: estimated pat datarate is 0 at index 7, apMac: C0C9E3F6688D
Mon Mar 29 17:22:27 2021 daemon.err nrd[10600]: estimatorDot11kIterateCB: Timeout waiting for 802.11k response from FE:7B:A0:81:3C:E5
Mon Mar 29 17:22:27 2021 daemon.err nrd[10600]: ar_pat_calc_cand_datarate[line 849]: estimated pat datarate is 0 at index 7, apMac: C0C9E3F6688D
Mon Mar 29 17:22:30 2021 daemon.err nrd[10600]: ar_pat_calc_cand_datarate[line 849]: estimated pat datarate is 0 at index 8, apMac: C0C9E3F6688D
Mon Mar 29 17:22:33 2021 daemon.err nrd[10600]: triggerMonSteering: Failed to get uplink rssi for 92:03:8C:56:61:23
Mon Mar 29 17:22:35 2021 daemon.err nrd[10600]: estimatorDot11kIterateCB: Timeout waiting for 802.11k response from FE:7B:A0:81:3C:E5
Mon Mar 29 17:22:36 2021 daemon.err nrd[10600]: ar_pat_calc_cand_datarate[line 849]: estimated pat datarate is 0 at index 8, apMac: C0C9E3F6688D
Mon Mar 29 17:22:42 2021 daemon.err nrd[10600]: ar_pat_calc_cand_datarate[line 849]: estimated pat datarate is 0 at index 8, apMac: C0C9E3F6688D
Mon Mar 29 17:22:44 2021 daemon.err nrd[10600]: estimatorDot11kIterateCB: Timeout waiting for 802.11k response from 92:03:8C:56:61:23
Mon Mar 29 17:22:44 2021 daemon.err nrd[10600]: estimatorDot11kIterateCB: Timeout waiting for 802.11k response from FE:7B:A0:81:3C:E5
Mon Mar 29 17:22:48 2021 daemon.err nrd[10600]: _bcm_wlanifBSteerEventsHandleRRMReportInd: NULL data
Mon Mar 29 17:22:48 2021 daemon.err nrd[10600]: estimatorCmnHandleBeaconReportEvent: Invalid beacon report for DA:8F:69:8F:6F:23
Mon Mar 29 17:22:50 2021 daemon.err nrd[10600]: =jacob=> _bcm_wlanifBSteerEventsHandleRRMReportInd: copy in channel=3
Mon Mar 29 17:22:50 2021 daemon.err nrd[10600]: ar_pat_calc_cand_datarate[line 849]: estimated pat datarate is 0 at index 7, apMac: C0C9E3F6688D
Mon Mar 29 17:22:53 2021 daemon.err nrd[10600]: estimatorDot11kIterateCB: Timeout waiting for 802.11k response from FE:7B:A0:81:3C:E5
Mon Mar 29 17:22:54 2021 daemon.err nrd[10600]: triggerMonSteering: Failed to get uplink rssi for DA:8F:69:8F:6F:23
Mon Mar 29 17:22:59 2021 daemon.err nrd[10600]: =jacob=> _bcm_wlanifBSteerEventsHandleRRMReportInd: copy in channel=3
Mon Mar 29 17:22:59 2021 daemon.err nrd[10600]: ar_pat_calc_cand_datarate[line 849]: estimated pat datarate is 0 at index 8, apMac: C0C9E3F6688D
Mon Mar 29 17:23:02 2021 daemon.err nrd[10600]: estimatorDot11kIterateCB: Timeout waiting for 802.11k response from FE:7B:A0:81:3C:E5
Mon Mar 29 17:23:02 2021 daemon.err nrd[10600]: triggerMonSteering: Failed to get uplink rssi for 92:03:8C:56:61:23