Re: RBR50 / RBS50 Dropping Connection

Knights356 · ‎2021-04-16

Hello,

I've had my ORBI and one Satellite running for the last few years without any problems. Lately it's been disconnecting and dropping the internet connection. When I turn the hub off and back on the connection comes back.

I have noticed when it drops the internet connection, I am still connected to the Wi-Fi, but it won't allow me to login into the router despite being connected.

It seems to happen once a week at the moment. I was on the latest firmware, but tried downgrading to 2.5.24 from 2.7.2, but unfortunately didn't resolve the issue. I am running on PPPOE and Its set to 'always on'

Things I have also tried:-
Changing the SSID
Changing 2.4 & 5Ghz Channels
Traffic Meter turned off
Fast Roaming and Other Settings
Tried a Different DNS Server
Finally, Turning down the transmit power to 50%

No Avail. I thought this only started to happen since upgrading to 2.7.2, but since downgrading it's happening again, so ruled a firmware problem out. Any ideas? Couple of threads in the past on this, but they are from 2018~

Hardware Version   RBR50
Firmware Version   V2.5.2.4
GUI Language Version   V1.0.0.375

Knights356 · ‎2021-04-18

UPDATE

I've just tried the telnet suggestion.

---------------------------------------------------------------
For those about to rock... (Chaos Calmer, r6043)
---------------------------------------------------------------
root@RBR50:/# config get wan_lease
86400
root@RBR50:/# config set wan_lease=1200
root@RBR50:/# config commit
root@RBR50:/#

View solution in original post

FURRYe38 · ‎2021-04-17

What is the Mfr and model# of the Internet Service Providers modem/ONT the NG router is connected too?

I'd have the ISP check the service line up to the modem. The Orbi router depends on a good signal from the modem.

Has a factory reset and setup from scratch been performed since last FW update?

Be sure Traffic Meter is disabled.

Knights356 · ‎2021-04-18

Thank you for your reply, @FURRYe38

Yes, I have performed a factory reset since downgrading the firmware and set it back up from scratch. Do you think i could try the wan_lease solution suggested in the past, or is this no longer effective?

https://community.netgear.com/t5/Orbi/Another-RBR50-Dropping-Internet-Connection/m-p/1875385/highlig...

The details of the modem are:

Name: BT OPENREACH FIBRE Modem ECI Telecom Ltd
Desc: NGA ECI-CPE-MODEMS TYPE 1B
Code: 061513
Model: B-FOCuS V-2FUb/r Rev.B
Cat No: 0N316150 Rev: RA403

Knights356 · ‎2021-04-18

UPDATE

I've just tried the telnet suggestion.

---------------------------------------------------------------
For those about to rock... (Chaos Calmer, r6043)
---------------------------------------------------------------
root@RBR50:/# config get wan_lease
86400
root@RBR50:/# config set wan_lease=1200
root@RBR50:/# config commit
root@RBR50:/#

FURRYe38 · ‎2021-04-18

Yes.

FURRYe38 · ‎2021-04-18

Let us know if that works....

vajim · ‎2021-04-18

@Knights356 wrote:
Thank you for your reply, @FURRYe38

Yes, I have performed a factory reset since downgrading the firmware and set it back up from scratch. Do you think i could try the wan_lease solution suggested in the past, or is this no longer effective?

https://community.netgear.com/t5/Orbi/Another-RBR50-Dropping-Internet-Connection/m-p/1875385/highlig...

The details of the modem are:
Name: BT OPENREACH FIBRE Modem ECI Telecom Ltd
Desc: NGA ECI-CPE-MODEMS TYPE 1B
Code: 061513
Model: B-FOCuS V-2FUb/r Rev.B
Cat No: 0N316150 Rev: RA403

Is this another case of bad firmware?

Knights356 · ‎2021-04-19

@FURRYe38

Thanks. Yes, I will report back.

@vajim

It's been a great setup —I did recently upgrade to the latest firmware, but had to downgrade as i thought this was the cause of the internet dropping. I'm currently back on V2.5.2.4 now and have tried the telnet suggestion. I've never had any problems in the past with the internet keep dropping out.

I've just noticed In the firewall log, I am getting a lot of reports of 'DoS Attacks' and 'Other Scans' and didn't know if this would drop the connection or cause some sort of issue with the Orbi to lose it's connection?

[DoS Attack: SYN/ACK Scan] from source: 107.21.50.172, port 443, Monday, April 19, 2021 14:40:53
[DoS Attack: SYN/ACK Scan] from source: 217.160.0.239, port 80, Monday, April 19, 2021 14:34:56
[DoS Attack: SYN/ACK Scan] from source: 34.95.140.246, port 27015, Monday, April 19, 2021 13:56:55
[DoS Attack: SYN/ACK Scan] from source: 188.246.234.74, port 443, Monday, April 19, 2021 13:50:28
[DoS Attack: SYN/ACK Scan] from source: 5.88.181.43, port 80, Monday, April 19, 2021 13:48:18
[DoS Attack: SYN/ACK Scan] from source: 162.241.216.182, port 443, Monday, April 19, 2021 13:30:44
[DoS Attack: SYN/ACK Scan] from source: 185.66.41.155, port 443, Monday, April 19, 2021 12:12:53
[DoS Attack: SYN/ACK Scan] from source: 185.66.41.76, port 443, Monday, April 19, 2021 12:03:28
[DoS Attack: SYN/ACK Scan] from source: 179.107.50.3, port 47999, Monday, April 19, 2021 12:02:34
[DoS Attack: SYN/ACK Scan] from source: 143.204.209.59, port 443, Monday, April 19, 2021 12:02:05
[DoS Attack: SYN/ACK Scan] from source: 185.66.41.76, port 443, Monday, April 19, 2021 11:54:15
[DoS Attack: SYN/ACK Scan] from source: 162.241.216.182, port 443, Monday, April 19, 2021 11:14:25
[DoS Attack: SYN/ACK Scan] from source: 179.107.51.62, port 13299, Monday, April 19, 2021 11:13:58
[DoS Attack: TCP/UDP Chargen] from source: 185.94.111.1, port 49130, Monday, April 19, 2021 11:04:01
[DoS Attack: SYN/ACK Scan] from source: 35.234.89.224, port 22, Monday, April 19, 2021 10:52:32
[DoS Attack: SYN/ACK Scan] from source: 157.90.5.58, port 80, Monday, April 19, 2021 10:43:38
[DoS Attack: SYN/ACK Scan] from source: 179.107.48.89, port 14823, Monday, April 19, 2021 10:28:22
[DoS Attack: SYN/ACK Scan] from source: 179.107.54.220, port 49524, Monday, April 19, 2021 10:12:18
[DoS Attack: RST Scan] from source: 18.136.209.49, port 80, Monday, April 19, 2021 10:11:47
[DoS Attack: SYN/ACK Scan] from source: 179.107.55.220, port 49524, Monday, April 19, 2021 10:09:52
[DoS Attack: SYN/ACK Scan] from source: 179.107.48.148, port 42146, Monday, April 19, 2021 10:08:19
[DoS Attack: SYN/ACK Scan] from source: 192.95.9.18, port 23, Monday, April 19, 2021 10:05:03
[DoS Attack: TCP/UDP Chargen] from source: 184.105.139.101, port 40334, Monday, April 19, 2021 09:59:46
[DoS Attack: SYN/ACK Scan] from source: 157.90.8.177, port 80, Monday, April 19, 2021 09:45:25
[DoS Attack: TCP/UDP Chargen] from source: 52.73.169.169, port 54051, Monday, April 19, 2021 09:44:34

Knights356 · ‎2021-04-22

@FURRYe38 @vajim

Just an update.

No reports of the internet dropping as of yet, since doing the telnet solution. Will report back in the next week or two.

I think i will stay on V2.5.2.4.

Knights356 · ‎2021-04-29

I can now confirm the telnet solution has fixed the problem for me. It would have dropped by now. I've decided to stay on the lower firmware version, but may consider upgrading to the latest firmware version and testing the telnet solution again. For now, I've decided to just stay on V2.5.2.4. I'm glad my Orbi is now functioning correctly without dropping out. I'm also considering upgrading my modem. It would be nice for the Telnet solution to be added to the latest firmware? No?

Thanks for everyones replies and @FURRYe38 for the advice.

FURRYe38 · ‎2021-04-29

Good to hear. Be sure to save off a back up configuration to file for safe keeping. Saves tine if a reset is needed.
https://kb.netgear.com/000062080/How-do-I-back-up-the-configuration-settings-on-my-Orbi-WiFi-System

Please mark your thread and solved so others will know.

Enjoy.