Longer Ping time compared to other ISP

[sacon14]

I recently got VM and a Hub 5 using RFoG(Radio Frequency over Glass), the Coax run is 0.5m. An engineer came out to fix an Upstream critical error which was manifesting itself as dreadful upload speeds, that's now sorted. 

But my long ping times persist. 

Pinging 8.8.8.8 is around 30ms+ whereas on my BT broadband its 16ms and consistently low. Both wired

I then put the Hub 5 into modem mode and acquired a public IP address. I established what the local gateway on my subnet was and pinged it. I was getting a consistent 12ms reply time. That would account for the difference between BT and Virgin media.

Should RFoG introduce that sort of delay on a connection?

[legacy1]

So ping is better in modem mode then router mode?

[sacon14]

No, no difference in modem mode. When testing in modem mode, I'm able to establish the gateway on my subnet. It takes a whopping 12ms to the nearest gateway. This extra 12-13ms accounts for the difference of a bad Virgin Media ping time and a reasonable, but not great, BT ping time.

My question is does RFoG normally introduce that sort of increase, 10ms and above?

[Client62]

We have a Hub 3 in Router mode and we are also an  RFoG area, the Latency is typically about 15ms the Jitter is <1ms and Packet Loss 0.

C:\Users\Philip>ping 8.8.8.8

Pinging 8.8.8.8 with 32 bytes of data:
Reply from 8.8.8.8: bytes=32 time=21ms TTL=57
Reply from 8.8.8.8: bytes=32 time=21ms TTL=57
Reply from 8.8.8.8: bytes=32 time=18ms TTL=57
Reply from 8.8.8.8: bytes=32 time=18ms TTL=57

Ping statistics for 8.8.8.8:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 18ms, Maximum = 21ms, Average = 19ms

[Client62]

8.8.8.8 is Google's load balancer for a Global Public DNS service, we learn little by pinging it as we do not know where it is located.

It would be much better to use a host that is closer to our connection.

C:\Users\Philip>ping -a 194.168.4.100

Pinging cache1.service.virginmedia.net [194.168.4.100] with 32 bytes of data:
Reply from 194.168.4.100: bytes=32 time=14ms TTL=61
Reply from 194.168.4.100: bytes=32 time=13ms TTL=61
Reply from 194.168.4.100: bytes=32 time=12ms TTL=61
Reply from 194.168.4.100: bytes=32 time=11ms TTL=61

Ping statistics for 194.168.4.100:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 11ms, Maximum = 14ms, Average = 12ms

[legacy1]

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@sacon14 wrote:

My question is does RFoG normally introduce that sort of increase, 10ms and above?

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First hop can be 6ms and on some setups by VM higher due to Docsis and a hub 5

[sacon14]

My first hop is 20ms. The coax part is only half a meter, then to RFoG fibre. 20ms is a very big introduction of a delay before you even go through VMs network and the internet.

Interestingly, I have Virgin Media in the Republic of Ireland, coax along the street, DOCSIS and Hub 3. I'm getting ping times of 5ms to 8.8.8.8!

[Adduxi]

This is exactly the same for me, pings on BT are always lower than VM and have been for many years.

To be honest, it's never bothered me.  As long as the broadband supply is working, I'm happy   🙂