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Standard User j314
(newbie) Mon 23-Oct-17 07:29:48
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Anyone with 80/20 FTTP: Actual observed performance?


[link to this post]
 
I see 73 down, 21 up, and 13ms minimum latency (more like 17ms to most destinations). I'm not complaining, but I'm also not sure why the downstream isn't hovering right around the cap as the upstream is or why the latency to the first hop* isn't very low single digits instead of 12ms. What do you get on your connection?

(I'm pretty confident my computer and local network equipment are OK, not looking for troubleshooting steps as such. Just want to determine whether this is typical for Infinity 2 FTTP)

* Actually the very first hop doesn't respond to icmp in my case, so really the second hop.

Edited by j314 (Mon 23-Oct-17 07:30:48)

Standard User Zarjaz
(eat-sleep-adslguide) Mon 23-Oct-17 07:58:15
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Re: Anyone with 80/20 FTTP: Actual observed performance?


[re: j314] [link to this post]
 
Hmm, FWIW, a tad over the ordered upload speed is what I have observed on FTTP, with the download usually being a couple of meg less .......

not noticed the ping being into double figures, but then that may depend on where in the country you are possibly ?

Which router are you using ?

Standard User j314
(newbie) Mon 23-Oct-17 08:57:35
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Re: Anyone with 80/20 FTTP: Actual observed performance?


[re: Zarjaz] [link to this post]
 
Okay, it's probably in the right ballpark then. Although I would have expected something closer to 77 than 73 given that info.

Realistically the speed is fine at the moment. The reason I wonder is that the line is supposed to be able to do 330+Mbit, so it seems strange that it can't do a locked 80 or very close to it.

Currently just using the ISP's router (BT Smart Hub). I suppose I could try bypassing any router and see what a direct PPPoE connection gives...

I'm in semi-rural Scotland but I should clarify that most of the latency is coming from the first couple hops into the network, not from the hops between BT and the final destination. I would have expected that portion of the latency to be low and not area dependant.

Edited by j314 (Mon 23-Oct-17 08:59:24)


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Standard User caffn8me
(eat-sleep-adslguide) Mon 23-Oct-17 11:05:26
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Re: Anyone with 80/20 FTTP: Actual observed performance?


[re: j314] [link to this post]
 
Hopefully I'll be able to try it in a few weeks and let you know. The FTTP service has been ordered at 80/20 for now and I'm waiting for an install date.

Sarah

--
If I can't drink my bowl of coffee three times daily, then in my torment, I will shrivel up like a piece of roast goat

Spiders on coffee - Badass spiders on drugs
Standard User Zarjaz
(eat-sleep-adslguide) Mon 23-Oct-17 11:23:34
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Re: Anyone with 80/20 FTTP: Actual observed performance?


[re: j314] [link to this post]
 
The reason I wonder is that the line is supposed to be able to do 330+Mbit, so it seems strange that it can't do a locked 80 or very close to it.

That is the highest profile currently offered as a product on your service, the technology could do more.

I daresay someone will be along shortly to explain about why one doesn't get the full kahuna downstream, packet headers and the like ....

Paul is on a 330 Openreach FTTP product, there's a speediest posted in the linked post.

Standard User PaulKirby
(knowledge is power) Tue 24-Oct-17 01:54:07
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Re: Anyone with 80/20 FTTP: Actual observed performance?


[re: Zarjaz] [link to this post]
 
In reply to a post by Zarjaz:
Paul is on a 330 Openreach FTTP product, there's a speediest posted in the linked post.

I normally get a little more than what was displayed on that image.
But the most I have got is 320 Mbit down and 35 Mbit up and the latency has been as low as 3ms but averages about 9ms.

BT's Infinity 4 is listed as 300 Mbit down and most of the time I get more but there are times especially between 3pm and 2am week nights when it drops below 200 Mbit, but its still better than the 4-5 Mbit I was getting on ADSL2+ isn't it smile

The latency to this forum is shown below:

ping thinkbroadband.com

Pinging thinkbroadband.com [80.249.99.72] with 32 bytes of data:
Reply from 80.249.99.72: bytes=32 time=4ms TTL=53
Reply from 80.249.99.72: bytes=32 time=5ms TTL=53
Reply from 80.249.99.72: bytes=32 time=4ms TTL=53
Reply from 80.249.99.72: bytes=32 time=3ms TTL=53

Ping statistics for 80.249.99.72:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 3ms, Maximum = 5ms, Average = 4ms

A trace route to this site:

tracert thinkbroadband.com

Tracing route to thinkbroadband.com [80.249.99.72]
over a maximum of 30 hops:

  1    <1 ms    <1 ms    <1 ms  *ROUTERNAME* [192.168.2.253]
  2     3 ms     2 ms     2 ms  217.32.146.68
  3     3 ms     2 ms     2 ms  217.32.146.110
  4     5 ms     3 ms     3 ms  217.32.147.194
  5     4 ms     3 ms     4 ms  213.120.178.67
  6     3 ms     4 ms     3 ms  217.41.168.107
  7     4 ms     4 ms     4 ms  109.159.249.106
  8     4 ms     4 ms     4 ms  core4-te0-10-0-26.faraday.ukcore.bt.net [109.159.255.197]
  9     5 ms     4 ms     4 ms  213.121.193.199
 10     5 ms     4 ms     4 ms  linx-gw1.thn.ncuk.net [195.66.224.240]
 11     6 ms     4 ms     4 ms  te2-1-9.star10g.bdr-rt3.thdo.ncuk.net [80.249.97.17]
 12     6 ms     6 ms     8 ms  po4-31.core-rs2.thdo.ncuk.net [80.249.97.85]
 13     4 ms     4 ms     4 ms  ip99-72.thdo.ncuk.net [80.249.99.72]

Trace complete.

The bbc site is eactly 8ms, google.com is 4ms to 5ms, our server located in France is about 10ms to 12ms.

The World of Warcraft Europe Servers are about 13ms, Diablo III Europe Servers settles down to about 18ms after a couple of mins.

So all in all its not too bad

A neighbour across the road from me is also on the 80/20 package from BT over FTTP and he gets the same latency as me and he gets about 74 Mbit down, 20Mbit up and that was over Wi-Fi (10m away from router), so I am not sure why the OP is getting such a higher latency.

Paul

BTBroadband - Infinity 4 312.47 Mbps (down), 29.78 Mbps (up) FVA
TBB Speedtest | Linksys WRT 3200 ACM (BQM)
Standard User baby_frogmella
(fountain of knowledge) Tue 24-Oct-17 08:57:37
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Re: Anyone with 80/20 FTTP: Actual observed performance?


[re: PaulKirby] [link to this post]
 
In reply to a post by PaulKirby:
I am not sure why the OP is getting such a higher latency.


As the OP is in Scotland he's never going to get pings in single digits, assuming his ISP's servers are in England. On my BT 21CN FTTP line I never get less than 19ms which is about right considering I'm in the Highlands and my ISP's servers are in London. On FTTC (TalkTalk) I never got less than 22ms. You can't beat the laws of physics!

FluidOne FTTP On Demand 330/30 Mbps
Netgear Nighthawk X10
Standard User j314
(newbie) Tue 24-Oct-17 12:01:15
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Re: Anyone with 80/20 FTTP: Actual observed performance?


[re: baby_frogmella] [link to this post]
 
Thanks for the stats, PaulKirby.

baby_frogmella: The thing is, almost all of it is in the first hop (or first two). There are many hops after that where the packet works its way through a long network, but those add very little delay.

I don't know where my PPPoE link ends and regular traceable packet hopping commences, but it seems unlikely to be in London.

In reply to a post by baby_frogmella:
On my BT 21CN FTTP line I never get less than 19ms

How much of that is from the first hop after your router?
Standard User j314
(newbie) Tue 24-Oct-17 12:10:29
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Re: Anyone with 80/20 FTTP: Actual observed performance?


[re: PaulKirby] [link to this post]
 
Here's mine (reformatted slightly, macOS' traceroute is less readable than Windows'):
traceroute to thinkbroadband.com (80.249.99.72), 64 hops max, 72 byte packets
 1  192.168.1.254 (192.168.1.254)                 1.123 ms  0.849 ms  0.744 ms
 2  * * *
 3  31.55.185.197 (31.55.185.197)                 11.984 ms  11.871 ms  11.734 ms
 4  31.55.185.220 (31.55.185.220)                 11.766 ms  12.026 ms  12.010 ms
 5  195.99.127.114 (195.99.127.114)               12.188 ms  11.982 ms  12.162 ms
 6  195.99.127.87 (195.99.127.87)                 12.487 ms  12.367 ms  12.061 ms
 7  linx-gw1.thn.ncuk.net (195.66.224.240)        12.391 ms  12.372 ms  12.306 ms
 8  te2-1-9.star10g.bdr-rt3.thdo.ncuk.net (80.249.97.17)  12.134 ms  12.126 ms  12.504 ms
 9  po4-31.core-rs2.thdo.ncuk.net (80.249.97.85)  12.777 ms  12.519 ms  13.116 ms
10  ip99-72.thdo.ncuk.net (80.249.99.72)          12.201 ms  12.263 ms  12.165 ms

As you can see, the all-important first hop doesn't respond to pings. If it were 3ms to that and 9ms from there to the second hop, I would understand that and assume it was distance related. As things are, though, I suspect it's more like 9-10ms to the first hop which is much higher than GPON should provide.
Standard User baby_frogmella
(fountain of knowledge) Tue 24-Oct-17 12:27:05
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Re: Anyone with 80/20 FTTP: Actual observed performance?


[re: j314] [link to this post]
 
This is the traceroute to TBB from my FTTP 330/30 connection:

C:\>tracert thinkbroadband.com

Tracing route to thinkbroadband.com [80.249.99.72]
over a maximum of 30 hops:

1 1 ms 1 ms 1 ms 192.168.1.1
2 24 ms 21 ms 22 ms 77-89-165-7.fluidata.co.uk [77.89.165.7]
3 44 ms 21 ms 21 ms 77-89-165-29.fluidata.co.uk [77.89.165.29]
4 24 ms 22 ms 22 ms linx-gw1.thn.ncuk.net [195.66.224.240]
5 24 ms 21 ms 22 ms te2-1-9.star10g.bdr-rt3.thdo.ncuk.net [80.249.97.17]
6 25 ms 24 ms 22 ms po4-31.core-rs2.thdo.ncuk.net [80.249.97.85]
7 25 ms 21 ms 21 ms ip99-72.thdo.ncuk.net [80.249.99.72]

Trace complete.


As you can see, i more or less get a constant 22ms from the second hop (first hop is always a local hop to your router). The above is through 802.11ac wifi so wired resultts will be a few ms better.

TBH unless you're having trouble with your connection, I wouldn't worry too much about tracert results. Setting up a TBB BQM will give you a better idea of your latency and as long as its smooth you've got nothing to worry about. But I'll re-iterate: your geographical location plays a big part in your ping times.

FluidOne FTTP On Demand 330/30 Mbps
Netgear Nighthawk X10

Edited by baby_frogmella (Tue 24-Oct-17 12:30:36)

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