BSNL Fiber connection flapping

  • Thread starter Thread starter dhirubhai
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Location
NA
ISP
BSNL Fiber, Airtel Fiber, Local 'Ethernet-Based' ISP, Jio 4G, Airtel 4G
Hi,

My BSNL Fiber connection started flapping last Friday (28-Feb-2020) in Pune, Hadapsar area.

It works great (full 100 Mbps symmetrically) for ~5 minutes and then stops working for around 45 seconds or so. This goes on and on in a cycle.

I use an Optilink ONU (with unused VoIP/telephone port and disabled WiFI) along with TP-Link Archer C7 AC1750 WiFi router running OpenWrt 19.07.2.

Yesterday, I put the ONU in bridge mode and shifted the PPPoE process to Archer C7 router but this hasn't helped (I did reads posts here that said that doing the same did help them). I have increased the PPPoE timeout values and this maintains the PPPoE session fine but packets don't go through during this downtime window. After this downtime, the old PPPoE session still works just fine.

The ONU TX and RX signal levels are fine and stable and LOS is maintained at all times. I have been using Wireshark for debugging at packet level but the problem doesn't seem to exist at ONU and PPPoE layers.

While I have backup internet connections, I would like to get BSNL Fiber working stable again. What could be causing this weird problem? Another person in my society has reported a similar problem.

I am talking with the local BSNL person (LCO person?) but that isn't helping much so far. Should I try changing the ONU unit?

Thanks for the help and debugging ideas! :)
 
Hi there! I am also from the same area and facing same issue for the past few days. Must be some issue on the network of BSNL as others have reported it too, see Is bsnl ever going to fix its current latency issue. | BSNL Broadband

Probably your local LCO will be clueless about this, need to contact the Pune NIB and ask them.

I have pinged some Pune FTTH Nodal officer on whatsapp, lets see if/what he responds...
 
I tried calling the Pune NIB number that I have and call was not connecting multiple times and when it did finally ring nobody is picking up :D
 
Videos on YouTube might also be working due to sufficient buffering (which tides over the connection downtime)?

Try running "ping youtube.com" continuously (or something similar) to check if the connection is actually going down for a bit.

On Linux, "ping -f 8.8.8.8" works very well to detect blips in connectivity.
 
Only Google services are working fine for me. Rest is choking. Got a call from district exchange saying it's due to some maintenance..
 
Same issue with me as well. Only peered services are working like Youtube.

Even I am unable to ping 8.8.8.8 & 1.1.1.1.

Screenshot (54).webp
Screenshot (55).webp
Screenshot (53).webp



ping was done after setting dns on cloudflare
 
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