Random ping spikes on excitel fiber gx titanium 2122a router [fixed]

I recently got excitel fiber at my house. Purchased the 300 Mbps plan for a month. The router was pre configured by my local excitel personnel, then he just gave me and told me to plug it into the fiber end. The speed was 300 Mbps on 5ghz and around 50-70 on 2.4ghz. Although range of 5ghz was very bad.

Immediately, without changing any settings in the router, i starter having random ping spikes every 3-4 sec while playing dota. I didnt try any other games. The ping in command prompt was fine, no spikes there. But especially while playing dota i had these spikes, and that too on 5ghz access point only. Everything worked fine on 2.4ghz and ethernet.

I tried changing every setting related to 5ghz access point in the router (channel, channel bandwidth, rts threshold, dtim interval, everthing...)
Nothing fixed the issue.

So after trying everything, i reset the router, but after that the internet stopped working, since router now had to be manually pre configured.
I raised a ticket, and the guy came and took the router and returned back in like 10 min.

Still the same issue.

This time, i took screenshot of the wan settings, my username and password, and then reset the router again.
And after resetting, i just entered my username and password and changed the wifi name and nothing else.

And everything has been working smoothly ever since.

I dont know what settings that local guy configured in my router, but that somehow caused ping spikes in dota.
My best guess, there was samba server enabled before, which after resetting got disabled. maybe that fixed it.

This is for anyone else facing same issue like me.

P.S. I also raised a ticket and tried explaining for 2 hrs to excitel technical support about my issue. Showed them the ping spikes via remote desktop. But they couldn't understand and refused to do anything about it.
 
Had to replace my old airtel router with this one. This is shit. Too high random ping spikes.

Pinging 8.8.8.8 with 32 bytes of data:
Reply from 8.8.8.8: bytes=32 time=108ms TTL=59
Reply from 8.8.8.8: bytes=32 time=110ms TTL=59
Reply from 8.8.8.8: bytes=32 time=6ms TTL=59
Reply from 8.8.8.8: bytes=32 time=6ms TTL=59
Reply from 8.8.8.8: bytes=32 time=107ms TTL=59
Reply from 8.8.8.8: bytes=32 time=6ms TTL=59
Reply from 8.8.8.8: bytes=32 time=6ms TTL=59
Reply from 8.8.8.8: bytes=32 time=6ms TTL=59
Reply from 8.8.8.8: bytes=32 time=109ms TTL=59
Reply from 8.8.8.8: bytes=32 time=6ms TTL=59
Reply from 8.8.8.8: bytes=32 time=6ms TTL=59
Reply from 8.8.8.8: bytes=32 time=110ms TTL=59
Reply from 8.8.8.8: bytes=32 time=6ms TTL=59
Reply from 8.8.8.8: bytes=32 time=6ms TTL=59
Reply from 8.8.8.8: bytes=32 time=6ms TTL=59
Reply from 8.8.8.8: bytes=32 time=78ms TTL=59
Reply from 8.8.8.8: bytes=32 time=109ms
 
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this is my ping captured over 2 hours time. I see a fluctuation of less than10ms. There is no heavy load.
 
I connected a spare router in access point mode to airtel ont, there is no ping spike when using wifi from spare router.

RESULTS FROM SPARE ROUTER.

Pinging google.com [142.250.193.14] with 32 bytes of data:


Ping statistics for 142.250.193.14:
Packets: Sent = 40, Received = 40, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 6ms, Maximum = 9ms, Average = 7ms
RESULTS FROM AIRTEL ONT
Pinging google.com [142.250.193.14] with 32 bytes of data:

Ping statistics for 142.250.193.14:
Packets: Sent = 38, Received = 38, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 6ms, Maximum = 391ms, Average = 28ms

Even pings to the ONT becomes stable at 2-3ms with spare router lol and when directly connected to ONT it keeps jumping to 110ms after every 4-5pings.

I will do a little more experiment but it seems using a router in access point mode will fix ping spikes.
 
Last edited:
a little off-topic : I used the router to ping which is connected with lan cable to ONT and results are surprising.

Ping statistics for 142.250.193.14:
Packets: Sent = 50, Received = 50, Lost = 0 (0% loss).
Approximate round trip times in milli-seconds:
Minimum = 1ms, Maximum = 1ms, Average = 0ms

pings to google, cloudflare dns, youtube is flat 1ms when wired, on wifi its 6-8 ms.

edit: tested more, also did some more buffer bloat test. WIFI with ONT is very unstable, using a secondary router for wifi will completely solve the ping issues.
 

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