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Author Topic: Traceroute Question  (Read 251 times)

dambuilder

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  • Posts: 42
Traceroute Question
« on: August 10, 2020, 11:25:35 AM »

Firstly I'm with Zen and on FTTP. I did a couple of Traceroute queries using my ASUS RT-AC88U network tools as follows. Whilst I don't pretend to know much about it, it would seem that the first address I see is London. This I find strange as I live in Glasgow. Any thoughts or is this just the way Zen works? Should the first hop be closer? And if closer what would it improve?

traceroute to google.com (216.58.212.206), 30 hops max, 38 byte packets
 1  vt1.cor1.lond1.ptn.zen.net.uk (51.148.72.21)  18.464 ms  16.225 ms  16.258 ms
 2  ae-3.pe2.thn-lon.zen.net.uk (51.148.73.12)  17.880 ms  17.208 ms  16.532 ms
 3  ae-2.br1.thn-lon.zen.net.uk (51.148.73.117)  16.536 ms  16.891 ms  16.699 ms
 4  72.14.223.28 (72.14.223.28)  14.632 ms  16.758 ms  *
 9  *  * 5  *  *  *
 6  ams16s21-in-f206.1e100.net (216.58.212.206)  16.053 ms  172.253.68.22 (172.253.68.22)  16.811 ms  216.239.58.220 (216.239.58.220)  16.125 ms
 
traceroute to www.facebook.com (157.240.1.35), 30 hops max, 38 byte packets
 1  vt1.cor1.lond1.ptn.zen.net.uk (51.148.72.21)  17.902 ms  16.245 ms  16.430 ms
 2  ae-3.pe2.thn-lon.zen.net.uk (51.148.73.12)  16.772 ms  16.509 ms  16.529 ms
 3  ae-2.br1.thn-lon.zen.net.uk (51.148.73.117)  16.844 ms  16.793 ms  16.807 ms
 4  195.66.239.19 (195.66.239.19)  26.933 ms  37.474 ms  50.433 ms
 5  po162.asw02.lhr3.tfbnw.net (129.134.44.210)  16.911 ms  16.868 ms  po152.asw01.lhr6.tfbnw.net (129.134.44.198)  20.553 ms
 6  po241.psw04.lhr6.tfbnw.net (157.240.40.147)  16.819 ms  po563.psw01.lhr6.tfbnw.net (129.134.44.229)  17.076 ms  po242.psw03.lhr6.tfbnw.net (157.240.40.143)  17.352 ms
 7  157.240.38.87 (157.240.38.87)  16.859 ms  173.252.67.135 (173.252.67.135)  17.616 ms  173.252.67.137 (173.252.67.137)  16.813 ms
 8  edge-star-mini-shv-01-lht6.facebook.com (157.240.1.35)  17.451 ms  17.297 ms  16.722 ms
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CarlT

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  • Posts: 1697
  • Software Defined WAN deployment engineer
Re: Traceroute Question
« Reply #1 on: August 10, 2020, 12:35:50 PM »

The first hop is closer, you just don't see it on a traceroute. Also wouldn't improve anything. Basically traceroute can only show certain hops in the chain, and the first one of those you can see is Zen's kit in London.

Your ping is fine given you're in Glasgow. You're good.  :)
Logged
WiFi: Nighthawk® AX12 RAX120
Routing: pfSense VM
Switching: Mikrotik 2* CRS305-1G-4S-IN, 1 * CRS309-1G-8S+; various cheap and cheerful TP-Link/Netgear
Exchange: Wakefield
ISP: BT Full Fibre 900. Zen Full Fibre 900.

dambuilder

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  • Posts: 42
Re: Traceroute Question
« Reply #2 on: August 10, 2020, 01:18:00 PM »

Cheers.
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CarlT

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  • Posts: 1697
  • Software Defined WAN deployment engineer
Re: Traceroute Question
« Reply #3 on: August 11, 2020, 10:18:50 AM »

You're welcome.

Due to my having a line on BT I can actually see the hop in the exchange that both my Zen and my BT services go through, however I can only see it on the BT one due to how it's all set up.

traceroute -I www.bbc.co.uk
traceroute: Warning: www.bbc.co.uk has multiple addresses; using 212.58.233.253
traceroute to www.bbc.net.uk (212.58.233.253), 64 hops max, 72 byte packets
 1  172.16.13.185 (172.16.13.185)  2.380 ms  1.673 ms  1.407 ms
 2  * * *
 3  31.55.187.176 (31.55.187.176)  8.479 ms  8.788 ms  8.620 ms
 4  core1-hu0-2-0-5.southbank.ukcore.bt.net (195.99.127.28)  8.502 ms  8.270 ms  8.159 ms
 5  peer7-et-3-0-2.telehouse.ukcore.bt.net (109.159.252.180)  8.466 ms  8.533 ms  8.592 ms
 6  109.159.253.15 (109.159.253.15)  13.702 ms  9.022 ms  17.267 ms
 7  * * *

traceroute -I www.bbc.co.uk
traceroute: Warning: www.bbc.co.uk has multiple addresses; using 212.58.233.253
traceroute to www.bbc.net.uk (212.58.233.253), 64 hops max, 72 byte packets
 1  vt1.cor2.lond1.ptn.zen.net.uk (51.148.72.22)  9.159 ms  8.912 ms  8.683 ms
 2  ae-4.pe2.thn-lon.zen.net.uk (51.148.73.106)  14.239 ms  9.187 ms  9.141 ms
 3  ae-2.br1.thn-lon.zen.net.uk (51.148.73.117)  9.069 ms  9.177 ms  8.869 ms
 4  82.71.254.134 (82.71.254.134)  8.831 ms  26.400 ms  9.207 ms
 5  * *^C

They both went through 172.16.13.185, they have to as there's literally nowhere else for them to go, but it was wrapped up in other things in the Zen traceroute so doesn't show.
Logged
WiFi: Nighthawk® AX12 RAX120
Routing: pfSense VM
Switching: Mikrotik 2* CRS305-1G-4S-IN, 1 * CRS309-1G-8S+; various cheap and cheerful TP-Link/Netgear
Exchange: Wakefield
ISP: BT Full Fibre 900. Zen Full Fibre 900.