Airtel Xstream Broadband: Frequent Disconnection Problem

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nerdseeder

nerdseeder

Messages
67
Location
Bengaluru
ISP
Airtel FTTH - 1GBPS, TataSky Broadband - 300MBPS
Hi Guys,

I am seeing frequent/consistent disconnection. I am running pfsense with static IPv4 config in bridge mode. Disconnection are consistent. This started suddenly from last week. I am using 8.8.4.4 as gateway monitor IP.

I checked pfsense logs for any hardware issues. I tried plugging ethernet cable to different port but no luck even restarted both ONT and pfsene box. Raised this issue with Airtel customer care/appellate but no luck. I am not sure what is going on. I would appreciate any help.

Code: 
2021-05-30T23:57:13.806722+05:30 pfsene dpinger[46180] send_interval 2000ms  loss_interval 2000ms  time_period 60000ms  report_interval
0ms  data_len 1  alert_interval 3000ms  latency_alarm 500ms  loss_alarm 20%  dest_addr 8.8.4.4  bind_addr 122.166.x.x  identifier "AirTelGW "
2021-05-31T00:11:57.731194+05:30 pfsene dpinger[46180] AirTelGW 8.8.4.4: Alarm latency 8920us stddev 388us loss 27%
2021-05-31T00:16:36.702763+05:30 pfsene dpinger[62804] send_interval 2000ms  loss_interval 2000ms  time_period 60000ms  report_interval
0ms  data_len 1  alert_interval 3000ms  latency_alarm 500ms  loss_alarm 20%  dest_addr 8.8.4.4  bind_addr 122.166.x.x  identifier "AirTelGW "
2021-05-31T00:35:01.334439+05:30 pfsene dpinger[62804] AirTelGW 8.8.4.4: Alarm latency 8705us stddev 214us loss 27%
2021-05-31T00:36:32.451792+05:30 pfsene dpinger[47353] send_interval 2000ms  loss_interval 2000ms  time_period 60000ms  report_interval
0ms  data_len 1  alert_interval 3000ms  latency_alarm 500ms  loss_alarm 20%  dest_addr 8.8.4.4  bind_addr 122.166.x.x  identifier "AirTelGW "
2021-05-31T00:54:41.731646+05:30 pfsene dpinger[47353] AirTelGW 8.8.4.4: Alarm latency 8777us stddev 647us loss 24%
2021-05-31T00:56:48.773306+05:30 pfsene dpinger[62066] send_interval 2000ms  loss_interval 2000ms  time_period 60000ms  report_interval
0ms  data_len 1  alert_interval 3000ms  latency_alarm 500ms  loss_alarm 20%  dest_addr 8.8.4.4  bind_addr 122.166.x.x  identifier "AirTelGW "
2021-05-31T02:35:39.319921+05:30 pfsene dpinger[62066] AirTelGW 8.8.4.4: Alarm latency 8836us stddev 674us loss 24%
2021-05-31T02:37:13.311189+05:30 pfsene dpinger[62066] AirTelGW 8.8.4.4: Clear latency 8772us stddev 431us loss 0%
2021-05-31T04:13:32.469240+05:30 pfsene dpinger[62066] AirTelGW 8.8.4.4: Alarm latency 8759us stddev 262us loss 24%
2021-05-31T04:15:49.376243+05:30 pfsene dpinger[28772] send_interval 2000ms  loss_interval 2000ms  time_period 60000ms  report_interval
0ms  data_len 1  alert_interval 3000ms  latency_alarm 500ms  loss_alarm 20%  dest_addr 8.8.4.4  bind_addr 122.166.x.x  identifier "AirTelGW "
2021-05-31T06:14:25.734977+05:30 pfsene dpinger[28772] AirTelGW 8.8.4.4: Alarm latency 8677us stddev 507us loss 24%
2021-05-31T06:15:27.418796+05:30 pfsene dpinger[13879] send_interval 2000ms  loss_interval 2000ms  time_period 60000ms  report_interval
0ms  data_len 1  alert_interval 3000ms  latency_alarm 500ms  loss_alarm 20%  dest_addr 8.8.4.4  bind_addr 122.166.x.x  identifier "AirTelGW "
2021-05-31T06:31:48.251248+05:30 pfsene dpinger[13879] AirTelGW 8.8.4.4: Alarm latency 8802us stddev 632us loss 27%
2021-05-31T06:35:22.402864+05:30 pfsene dpinger[37119] send_interval 2000ms  loss_interval 2000ms  time_period 60000ms  report_interval
0ms  data_len 1  alert_interval 3000ms  latency_alarm 500ms  loss_alarm 20%  dest_addr 8.8.4.4  bind_addr 122.166.x.x  identifier "AirTelGW "
2021-05-31T06:51:34.633128+05:30 pfsene dpinger[37119] AirTelGW 8.8.4.4: Alarm latency 8834us stddev 885us loss 27%
2021-05-31T06:55:19.511956+05:30 pfsene dpinger[81732] send_interval 2000ms  loss_interval 2000ms  time_period 60000ms  report_interval
0ms  data_len 1  alert_interval 3000ms  latency_alarm 500ms  loss_alarm 20%  dest_addr 8.8.4.4  bind_addr 122.166.x.x  identifier "AirTelGW "
2021-05-31T07:33:39.160606+05:30 pfsene dpinger[81732] AirTelGW 8.8.4.4: Alarm latency 8734us stddev 269us loss 24%
2021-05-31T07:35:10.534008+05:30 pfsene dpinger[49368] send_interval 2000ms  loss_interval 2000ms  time_period 60000ms  report_interval
0ms  data_len 1  alert_interval 3000ms  latency_alarm 500ms  loss_alarm 20%  dest_addr 8.8.4.4  bind_addr 122.166.x.x  identifier "AirTelGW "
2021-05-31T08:52:47.918358+05:30 pfsene dpinger[49368] AirTelGW 8.8.4.4: Alarm latency 8838us stddev 221us loss 24%
2021-05-31T08:54:59.777644+05:30 pfsene dpinger[27502] send_interval 2000ms  loss_interval 2000ms  time_period 60000ms  report_interval
0ms  data_len 1  alert_interval 3000ms  latency_alarm 500ms  loss_alarm 20%  dest_addr 8.8.4.4  bind_addr 122.166.x.x  identifier "AirTelGW "
2021-05-31T09:52:01.877078+05:30 pfsene dpinger[27502] AirTelGW 8.8.4.4: Alarm latency 8875us stddev 219us loss 24%
2021-05-31T09:54:40.853230+05:30 pfsene dpinger[24912] send_interval 2000ms  loss_interval 2000ms  time_period 60000ms  report_interval
0ms  data_len 1  alert_interval 3000ms  latency_alarm 500ms  loss_alarm 20%  dest_addr 8.8.4.4  bind_addr 122.166.x.x  identifier "AirTelGW "
2021-05-31T10:54:16.429865+05:30 pfsene dpinger[24912] AirTelGW 8.8.4.4: Alarm latency 8891us stddev 273us loss 24%
 
I also monitor by IP from DigitalOcean droplet and send email and slack alerts.

Code: 
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-30 00:48:01.766506'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-30 02:48:01.807661'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-30 03:06:01.838630'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-30 03:08:02.205839'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-30 04:46:02.048081'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-30 04:48:01.398621'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-30 05:08:02.028758'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-30 05:48:02.069068'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-30 06:06:01.560225'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-30 06:08:02.024854'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-30 06:26:01.488735'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-30 06:28:01.759905'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-30 09:06:01.963326'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-30 09:08:01.189603'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-30 10:06:01.784379'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-30 10:08:02.117563'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-30 11:06:01.894978'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-30 12:06:01.790917'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-30 12:46:01.297024'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-30 13:46:01.355720'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-30 15:46:01.272041'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-30 16:26:01.668075'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-30 17:26:02.033325'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-30 18:24:01.304571'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-30 18:26:01.594710'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-30 18:42:01.595221'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-30 18:44:01.960964'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-30 18:46:01.288573'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-30 19:06:01.754183'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-30 19:26:01.472606'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-30 22:44:01.782345'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-31 01:02:01.568393'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-31 01:04:01.901460'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-31 01:22:01.792352'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-31 01:24:02.087159'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-31 02:04:02.051094'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-31 03:24:02.077299'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-31 04:22:01.743500'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-31 04:24:02.050630'}
{'text': 'Ping Check Failed for Host - 122.166.x.x - 2021-05-31 05:24:01.193079'}
 
I am following this issue with Airtel from last 2 week. 2 days days back they visited my place and replaced ONT. It did not help and I am still facing same issue.

New ONT
DZS ONT
Model Name H680GM-A
Hardware Version DPW:G-P-H680GM-A2
Software Version V3.2.2030070
Manufacturer DASAN Networks

Old ONT
Device Name G-2425G-A
Vendor Nokia
 
@Rickysin
Yeah I am on Gigabit plan with static IP. My gateway suddenly stops responding for any incoming or outgoing traffic. I am monitoring ping in both direction. Even my gateway stops responding to ping and things become to normal after 2-3 minutes. This is happening every 1 hour or 45 mins.
 

ONT Optical power stats.

ont-optical-stat.png
 
@nerdseeder raise the complaint again. and if they do not resolve it. again raise the complaint. Do that until they resolve your issue.
I am sure. If you observe you will see your Rx power fluctuates frequently and I think that is the culprit.
 
Hey I think it's a problem with your optical power levels. ONT's don't exactly have the correct measurements. They just work if the levels are right, and if it's borderline, they report sufficient levels in the webUI, which isn't ideal in reality.

Make sure there's no mismatch between APC and PC interface between your fiber tip and ONT. PC/APC mismatch sometimes does work, but can cause problems if you're at the edge of the network.

Also ask your engineer/LCO to come with an optical fiber meter and check the readings properly. Don't rely on what the ONTs report through their webUI.

If your LCO/engineer doesn't help you out because of lockdown or laziness, ask them if they could raise OLT power levels temporarily for a day and see if it resolves. This will require you to trust that they will actually do it.
 
I asked them many times about Optical power and they are saying it is fine. Even escalated this issue to Appellate and on social media (twitter). Following up this issue from last 2 weeks. I am on 1 GBPS plan and thinking to downgrade my plan as not able to use it. Currently using TSBB as my primary ISP.
 
TSBB fiber cable is with 2 cores. As I am in high rise apartment they were not able to pull dedicated cable for Airtel so they used second unused fiber core in TSBB.
 

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