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Weird routing via France for PN users. (Level 3)

kitz
Rising Star
Posts: 817
Thanks: 46
Registered: ‎08-06-2007

Weird routing via France for PN users. (Level 3)

Whilst this is outside of Plusnet network I wonder if anyone can help or make any suggestions as this only seems to be a problem that is affecting Plusnet users.
My site is running noticeably much slower than normal for visitors from Plusnet - regardless what Gateway they are on & Im starting to get the odd grumble about it.
Other ISPs seem to be OK..  
I think it probably may have something to do with this..  ie Im bouncing all round London, over to France and back to the UK again and its been like this for the past few days.
I have my own server (not shared hosting)  & my Server stats are fine and the load is excellent with plenty to spare....  but this isnt quite right.. nor is why should it be affecting Plusnet users
Normally I can ping my server in 15/16ms (Im up north).  This was from tonight
1 <1 ms <1 ms <1 ms ZyXEL.Home [192.168.1.1]
2 16 ms 16 ms 21 ms lo0-central10.ptn-ag02.plus.net [195.166.128.191]
3 16 ms 15 ms 15 ms link-b-central10.ptn-gw02.plus.net [212.159.2.134]
4 16 ms 16 ms 18 ms xe-1-2-0.ptw-cr02.plus.net [212.159.0.114]
5 32 ms 15 ms 19 ms ae2.ptw-cr01.plus.net [195.166.129.4]
6 15 ms 16 ms 16 ms ae1.pcl-cr01.plus.net [195.166.129.1]
7 16 ms 16 ms 16 ms xe-11-2-0.edge3.London2.Level3.net [212.187.201.213]
8 22 ms 22 ms 24 ms vl-3201-ve-128.ebr2.London2.Level3.net [4.69.202.177]
9 23 ms 22 ms 22 ms ae-42-42.ebr1.Paris1.Level3.net [4.69.159.86]
10 23 ms 22 ms 22 ms ae-91-91.csw4.Paris1.Level3.net [4.69.161.90]
11 22 ms 23 ms 22 ms ae-4-90.edge4.Paris1.Level3.net [4.69.168.199]
12 67 ms 66 ms 67 ms NTT-level3-2x10G.Paris.Level3.net [4.68.63.118]
13 57 ms 59 ms 59 ms ae-0.r20.parsfr01.fr.bb.gin.ntt.net [129.250.5.136]
14 72 ms 71 ms 103 ms as-2.r23.londen03.uk.bb.gin.ntt.net [129.250.5.8]
15 73 ms 75 ms 76 ms ae-2.r02.londen03.uk.bb.gin.ntt.net [129.250.5.41]
16 79 ms 75 ms 72 ms ae-2.r02.londen01.uk.bb.gin.ntt.net [129.250.3.1]
17 92 ms 84 ms 80 ms ae-1.r03.londen01.uk.bb.gin.ntt.net [129.250.3.37]
18 66 ms 66 ms 66 ms 62.73.179.150
19 72 ms 66 ms 72 ms 91.198.165.76
20 72 ms 80 ms * kitz.servers.eqx.misp.co.uk [185.24.98.37]
21 69 ms 71 ms 73 ms kitz.servers.eqx.misp.co.uk [185.24.98.37]

This was last night
| 2 | | 195.166.128.191 | lo0-central10.ptn-ag02.plus.net | ?(United Kingdom) | * | 30 | -x-- | Core Loopback Addresses |
| 3 | | 212.159.2.134 | link-b-central10.ptn-gw02.plus.net | ?London, UK | * | 15 | x | Access LAN |
| 4 | | 212.159.0.114 | xe-1-2-0.ptw-cr02.plus.net | ?London, UK | * | 15 | x--- | Access LAN |
| 5 | | 195.166.129.4 | ae2.ptw-cr01.plus.net | ?(United Kingdom) | * | 16 | x | Core Loopback Addresses |
| 6 | | 195.166.129.1 | ae1.pcl-cr01.plus.net | ?(United Kingdom) | * | 15 | x | Core Loopback Addresses |
| 7 | | 212.187.201.213 | xe-11-2-0.edge3.London2.Level3.net | London, UK | * | 16 | x- | Level 3 serial links |
| 8 | | 4.69.202.177 | vl-3201-ve-128.ebr2.London2.Level3.net | London, UK | * | 22 | x | 4.69.202.0 |
| 9 | | 4.69.159.86 | ae-42-42.ebr1.Paris1.Level3.net | Paris, France | +01:00 | 22 | x | 4.69.159.0 |
| 10 | | 4.69.161.90 | ae-91-91.csw4.Paris1.Level3.net | Paris, France | +01:00 | 22 | x | 4.69.161.0 |
| 11 | | 4.69.168.199 | ae-4-90.edge4.Paris1.Level3.net | Paris, France | +01:00 | 22 | x | 4.69.168.0 |
| 12 | | 4.68.63.118 | NTT-level3-2x10G.Paris.Level3.net | Paris, France | +01:00 | 88 | --x-- | 4.68.63.0 |
| 13 | | 129.250.5.136 | ae-0.r20.parsfr01.fr.bb.gin.ntt.net | | | 86 | --x- | 129.250.5.0 |
| 14 | | 129.250.5.8 | as-2.r23.londen03.uk.bb.gin.ntt.net | | | 86 | --x- | 129.250.5.0 |
| 15 | | 129.250.5.41 | ae-2.r02.londen03.uk.bb.gin.ntt.net | | | 84 | -x- | 129.250.5.0 |
| 16 | | 129.250.3.1 | ae-2.r02.londen01.uk.bb.gin.ntt.net | | | 85 | -x- | 129.250.3.0 |
| 17 | | 129.250.3.37 | ae-1.r03.londen01.uk.bb.gin.ntt.net | | | 86 | -x- | 129.250.3.0 |
| 18 | | 62.73.179.150 | - | ?(United Kingdom) | * | 84 | -x- | Verio UK london01 |
| 19 | | 91.198.165.76 | - | | | 85 | -x- | 91.198.165.0 |
| 20 | | 185.24.98.37 | kitz.co.uk | - | | 88 | -x- | 185.24.98.0 |
---------------------------------------------------------------------------------------------------------------------------------------------------------------------
Roundtrip time to kitz.co.uk, average = 88ms, min = 77ms, max = 98ms -- 27-May-2014 20:57:39

From another PN user on another gateway
racing route to kitz.co.uk [185.24.98.37]
over a maximum of 30 hops:
 1     1 ms    <1 ms    <1 ms  smoothwall [10.0.0.10]
 2    24 ms    24 ms    23 ms  lo0.10.central10.ptw-bng01.plus.net [195.166.128.170]
 3    24 ms    23 ms    24 ms  irb.10.ptw-cr02.plus.net [84.93.249.2]
 4    24 ms    24 ms    24 ms  ae1.pcl-cr02.plus.net [195.166.129.3]
 5    24 ms    24 ms    24 ms  ae2.pcl-cr01.plus.net [195.166.129.6]
 6    24 ms    23 ms    24 ms  xe-11-1-0.edge3.London2.Level3.net [212.187.201.209]
 7    30 ms    32 ms    32 ms  vl-3201-ve-128.ebr2.London2.Level3.net [4.69.202.177]
 8    32 ms    31 ms    30 ms  ae-42-42.ebr1.Paris1.Level3.net [4.69.159.86]
 9    33 ms    30 ms    31 ms  ae-61-61.csw1.Paris1.Level3.net [4.69.161.78]
10    31 ms    31 ms    31 ms  ae-1-60.edge4.Paris1.Level3.net [4.69.168.7]
11    33 ms     *       41 ms  NTT-level3-2x10G.Paris.Level3.net [4.68.63.118]
12    60 ms    58 ms    53 ms  ae-4.r04.parsfr01.fr.bb.gin.ntt.net [129.250.4.117]
13    33 ms    34 ms    35 ms  ae-3.r20.parsfr01.fr.bb.gin.ntt.net [129.250.6.176]
14    43 ms    44 ms    33 ms  as-2.r23.londen03.uk.bb.gin.ntt.net [129.250.5.8]
15    34 ms    38 ms    36 ms  ae-2.r02.londen01.uk.bb.gin.ntt.net [129.250.3.1]
16    51 ms    39 ms    52 ms  ae-1.r03.londen01.uk.bb.gin.ntt.net [129.250.3.37]
17    54 ms    79 ms    67 ms  62.73.179.150
18    36 ms    34 ms    44 ms  62.73.179.150
19    53 ms    62 ms    54 ms  91.198.165.76
20    51 ms    47 ms    38 ms  kitz.servers.eqx.misp.co.uk [185.24.98.37]

... and yet another PN user
1     5 ms     1 ms     1 ms  192.168.0.1
 2    30 ms    24 ms    26 ms  lo0-central10.pcl-ag05.plus.net [195.166.128.186]
 3    26 ms    25 ms    25 ms  link-a-central10.pcl-gw01.plus.net [212.159.2.176]
 4    26 ms    24 ms    54 ms  xe-1-2-0.pcl-cr01.plus.net [212.159.0.208]
 5    26 ms    25 ms    24 ms  xe-11-2-0.edge3.London2.Level3.net [212.187.201.213]
 6    32 ms    31 ms    34 ms  vl-3201-ve-128.ebr2.London2.Level3.net [4.69.202.177]
 7    33 ms    31 ms    33 ms  ae-44-44.ebr1.Paris1.Level3.net [4.69.159.94]
 8    36 ms    31 ms    31 ms  ae-71-71.csw2.Paris1.Level3.net [4.69.161.82]
 9    33 ms    31 ms    38 ms  ae-2-70.edge4.Paris1.Level3.net [4.69.168.71]
10    41 ms    39 ms    38 ms  NTT-level3-2x10G.Paris.Level3.net [4.68.63.118]
11  2099 ms    44 ms    43 ms  ae-4.r04.parsfr01.fr.bb.gin.ntt.net [129.250.4.117]
12    55 ms    47 ms    52 ms  ae-3.r20.parsfr01.fr.bb.gin.ntt.net [129.250.6.176]
13    54 ms    53 ms    57 ms  as-2.r23.londen03.uk.bb.gin.ntt.net [129.250.5.8]
14    53 ms    57 ms    54 ms  ae-2.r02.londen03.uk.bb.gin.ntt.net [129.250.5.41]
15    68 ms    61 ms    61 ms  ae-2.r02.londen01.uk.bb.gin.ntt.net [129.250.3.1]
16    54 ms    55 ms    54 ms  ae-1.r03.londen01.uk.bb.gin.ntt.net [129.250.3.37]
17    57 ms    60 ms    58 ms  91.198.165.76
18    65 ms    51 ms    41 ms  kitz.servers.eqx.misp.co.uk [185.24.98.37]


Users on other ISPs arent seeing this.


---
Edited to add Level3 in topic title

34 REPLIES
Community Veteran
Posts: 3,189
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Fixes: 2
Registered: ‎31-07-2007

Re: Weird routing via France for PN users.

It's level3, they have been having the same issue since January
Unvalued customer since 2001 funding cheap internet for others / DSL/Fibre house move 24 month regrade from 8th May 2017
kitz
Rising Star
Posts: 817
Thanks: 46
Registered: ‎08-06-2007

Re: Weird routing via France for PN users.

Cheers for that reply.
Which brings me to repeat, why only Plusnet customers..  
....and if this is the case why arent Plusnet kicking Level 3 up the backside and saying this isnt good enough... and move on to another transit provider.
adie:quote
Community Veteran
Posts: 3,189
Thanks: 20
Fixes: 2
Registered: ‎31-07-2007

Re: Weird routing via France for PN users.

From the MMO's I play and the related in game chat, its not just PN customers that get affected, Virgin Media / BT / German and Dutch ISP's.  Any Euro online gamer knows to well of the hassle that level3 add to a nights gaming and have done for years.
PN know about it but we are a vocal few, so its never changed unless its that poor that it affects a lot of customers.  PN have stop gap changed the routing on occasions, but Level3 never get there hardware to not fail over regularly and what backups they have never trigger.
Unvalued customer since 2001 funding cheap internet for others / DSL/Fibre house move 24 month regrade from 8th May 2017
Community Veteran
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Registered: ‎11-12-2013

Re: Weird routing via France for PN users.

I can confirm the problem.
Possible reasons why its limited to plusnet?
Other isp's may not use level3 to goto the site.
Other isp's may have direct peering.
Other isp's may have kicked level3 up the backside and got fixed routing, but normally if a transit provider did this it would affect all their traffic.
Kitz you have a trace from BT to the site?
It seems your site isp does have LINX peering so the question is why isnt plusnet using it?
Also enable ipv6 :p then us ipv6 plusnet users will probably go over that instead Smiley
Community Veteran
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Registered: ‎10-06-2010

Re: Weird routing via France for PN users.

I think this has been going on for longer than since January. I'm not even sure if it is entirely outside of Plusnet's control, since the route you get through Level3 seems to depend on how your traffic leaves Plusnet (or perhaps it takes a different route out of Plusnet because it has to take a different route through level3). Here's another traceroute:
[tt]traceroute to kitz.co.uk (185.24.98.37), 30 hops max, 60 byte packets
1  192.168.0.1 (192.168.0.1)  1.830 ms
2  lo0-central10.ptn-ag03.plus.net (195.166.128.192)  22.624 ms
3  link-a-central10.ptn-gw01.plus.net (212.159.2.136)  21.586 ms
4  xe-5-3-0.ptw-cr01.plus.net (212.159.0.10Cool  20.213 ms
5  te-4-2.car5.London1.Level3.net (217.163.45.249)  116.852 ms
6  ae-52-52.csw2.London1.Level3.net (4.69.139.120)  21.032 ms
7  ae-225-3601.edge3.London1.Level3.net (4.69.166.146)  21.452 ms
8  be3043.ccr22.lon01.atlas.cogentco.com (130.117.15.245)  21.763 ms
9  te3-8.ccr01.lon10.atlas.cogentco.com (154.54.75.66)  21.239 ms
10  te3-2.ccr01.lon15.atlas.cogentco.com (154.54.57.234)  22.531 ms
11  te3-2.ccr01.lon14.atlas.cogentco.com (154.54.58.49)  22.442 ms
12  te0-6-0-3.rcr21.lhr01.atlas.cogentco.com (130.117.51.185)  23.354 ms
13  149.6.8.226 (149.6.8.226)  22.144 ms
14  91.198.165.76 (91.198.165.76)  23.390 ms
15  kitz.servers.eqx.misp.co.uk (185.24.98.37)  22.881 ms[/tt]
Unfortunately the difference could just be due to the routing having changed to go via cogentco.com rather than ntt.net or because the traceroute is being done at a different time of the day. But it seems it could vary between ptn -> ptw-cr01 -> level3 or ptn -> ptw-cr02 -> ptw-cr01 -> pcl-cr01 -> level3.
Community Veteran
Posts: 6,824
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Registered: ‎27-10-2012

Re: Weird routing via France for PN users.

Level3 currently has two routings that your traffic will take with PN - via NTT in Paris and Cogent in London. Your routing depends on which Level 3 London core router your traffic hits (I think):
Quote
BGP routing table entry for 185.24.96.0/22
Paths: (2 available, best #1)
  174 23456
  AS-path translation: { COGENT RESERVED-AS }
    edge3.London1 (metric 20020)
      Origin IGP, metric 100000, localpref 86, valid, internal, best
      Community: Europe  Lclprf_86 United_Kingdom Level3_Peer London Level3:11078
      Originator: edge3.London1

Quote
BGP routing table entry for 185.24.96.0/22
Paths: (2 available, best #1)
  2914 23456
  AS-path translation: { NTTC-GIN-AS RESERVED-AS }
    edge4.Paris1 (metric 21160)
      Origin IGP, metric 100000, localpref 86, valid, internal, best
      Community: Verio_Customer 2914:1203 2914:2201 2914:3200 Europe  Lclprf_86 France Level3_Peer Paris
      Originator: edge4.Paris1

I think the issue is that for some reason, NTT seem to be announcing that route via Paris to Level3.
Community Veteran
Posts: 1,136
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Registered: ‎30-07-2007

Re: Weird routing via France for PN users.

Quote from: kitz
Cheers for that reply.
Which brings me to repeat, why only Plusnet customers..  
....and if this is the case why arent Plusnet kicking Level 3 up the backside and saying this isnt good enough... and move on to another transit provider.
[Moderator's note by Adie (dvorak):  Full quote of preceding post removed, as per Forum Rule]

It's a routing problem, Plusnet will not do a thing about it. (c.f. long running thread about a certain torrent site being blocked by one of plusnet's peering partners and they inaction and lack of willingness to do anything to change the routing paths)
F9 member since 4 Sep 1999
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DLM manages your line the same way DRM manages your rights.
Look at all the pretty graphs! (now with uptime logging!)
Community Veteran
Posts: 6,824
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Registered: ‎27-10-2012

Re: Weird routing via France for PN users.

Quote from: avatastic
c.f. long running thread about a certain torrent site being blocked by one of plusnet's peering partners and they inaction and lack of willingness to do anything to change the routing paths

If you could explain what Plusnet can do about that specific site, then I am all ears.
Community Veteran
Posts: 6,824
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Registered: ‎27-10-2012

Re: Weird routing via France for PN users.

@ Kitz - If you raise it with your hosts, they should get an answer from their peers. Hopefully PN will then do the same with Level3.
We had a similar thing with the PN routing to OpenDNS, where the routing changes periodically from London to Frankfurt. At one point, all DNS lookups with OpenDNS from Europe were being sent to the US.
I contacted OpenDNS who said they had to stop Level3 routing to their London datacentre for a short period because there was packet loss on that link, meaning the traffic automatically moved over to Frankfurt. At one point OpenDNS had to take Frankfurt offline, which meant Level3 then routed to the OpenDNS Washington datacentre.
kitz
Rising Star
Posts: 817
Thanks: 46
Registered: ‎08-06-2007

Re: Weird routing via France for PN users.

Thanks very much everyone for your replies.
Bit disappointed no response from PN on this, particularly since its been brought to my attention that Im not the only one complaining about the Level3 routing via Paris.
Theres been several another threads on here in which gamers are also affected.  My server is located in a London datacenter so theres no reason why this should be happening.

This is from a sky connection

1    <1 ms    <1 ms    <1 ms  192.168.0.10
 2     *        *        *     Request timed out.
 3    10 ms    15 ms    15 ms  02780842.bb.sky.com [2.120.8.66]
 4    10 ms     9 ms    10 ms  ae-1.r00.londen01.uk.bb.gin.ntt.net [83.231.199.161]
 5    10 ms    10 ms     9 ms  ae-1.r03.londen01.uk.bb.gin.ntt.net [129.250.3.37]
 6     9 ms     9 ms     9 ms  62.73.179.150
 7    12 ms    10 ms    14 ms  91.198.165.76
 8    10 ms     9 ms     9 ms  kitz.servers.eqx.misp.co.uk [185.24.98.37]

Users on other ISPs arent having this problem, so if they can get it right, whats the big deal for plusnet?
Im not a happy bunny, the site is garbage at times from PN.   Theres a reason why I pay for premium UK hosting and a lot of the site users are on Plusnet.   I was doing some huge transfers the other day for the wiki (security releases and backups) and it took me all day. It was REALLY doing my head in because things were slow..  yet I can look at the server load and see its only at 0.11 whilst Im still sat there waiting for a page to load.
For the past few nights any SQL backups to my PC have failed due to the amount of time it takes.  Not too long ago I could FTP down from my server at full pelt of my line... now its a max of 50Mbps, but more often I cant get that,  so theres some congestion somewhere along the line which is much worse in the evenings.
Quote
Kitz - If you raise it with your hosts, they should get an answer from their peers.

I have done now.. although not sure what their findings will be if its only affecting PN.
Quote
Hopefully PN will then do the same with Level3.

Kelly. / Chris..   any ideas please?
Quote
It seems your site isp does have LINX peering so the question is why isnt plusnet using it?

Yes afaik they do or Ive at least in the past seen Linx but that was before I had my own server & at that may have been at a different datacenter - not sure tbh.   They also peer with CogentCo.
Community Veteran
Posts: 6,824
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Registered: ‎27-10-2012

Re: Weird routing via France for PN users.

It will also affect anyone who's main peer is Level3, although I'm not quite sure which ISPs that would be in the UK.
If you're on a PTN/PTW gateway, the routing should go via Level3 London and Cogent London:
Quote
$ traceroute -I 185.24.98.37
traceroute to 185.24.98.37 (185.24.98.37), 64 hops max, 72 byte packets
1  router.asus.com (192.168.1.1)  0.452 ms  0.276 ms  0.265 ms
2  lo0-central10.ptn-ag01.plus.net (195.166.128.190)  6.276 ms  4.354 ms  4.448 ms
3  link-b-central10.ptn-gw02.plus.net (212.159.2.130)  4.262 ms  4.204 ms  4.134 ms
4  xe-5-2-0.ptw-cr02.plus.net (212.159.0.106)  4.187 ms  4.112 ms  4.265 ms
5  ae2.ptw-cr01.plus.net (195.166.129.4)  7.338 ms  4.140 ms  4.119 ms
6  * * *
7  ae-52-52.csw2.london1.level3.net (4.69.139.120)  4.488 ms  4.504 ms  4.522 ms
8  ae-226-3602.edge3.london1.level3.net (4.69.166.150)  4.457 ms  4.310 ms  4.371 ms
9  be3043.ccr22.lon01.atlas.cogentco.com (130.117.15.245)  5.800 ms  7.306 ms  5.913 ms
10  te3-8.ccr01.lon10.atlas.cogentco.com (154.54.75.66)  5.588 ms  5.525 ms  5.576 ms
11  te3-2.ccr01.lon15.atlas.cogentco.com (154.54.57.234)  5.630 ms  5.661 ms  5.694 ms
12  te3-2.ccr01.lon14.atlas.cogentco.com (154.54.58.49)  5.843 ms  5.988 ms  5.913 ms
13  te0-6-0-3.rcr21.lhr01.atlas.cogentco.com (130.117.51.185)  6.593 ms  6.193 ms  6.494 ms
14  149.6.8.226 (149.6.8.226)  6.576 ms  6.633 ms  6.531 ms
15  91.198.165.76 (91.198.165.76)  7.494 ms  7.133 ms  7.446 ms
16  kitz.servers.eqx.misp.co.uk (185.24.98.37)  6.555 ms  6.308 ms  6.698 ms

There could be some issue with the Level3 London > NTT London connection which is why traffic is being sent via Paris.
kitz
Rising Star
Posts: 817
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Registered: ‎08-06-2007

Re: Weird routing via France for PN users. (Level 3)

Quote
There could be some issue with the Level3 London > NTT London connection which is why traffic is being sent via Paris.

Possibly looking like it?
That tracert you provided is interesting...  no problems if via cogentco.
I can trace my hosts via cogentco and have no issues
Quote

Tracing route to vidahost.com [91.146.106.2]
over a maximum of 30 hops:
 1    <1 ms    <1 ms    <1 ms  ZyXEL.Home [192.168.1.1]
 2    67 ms    25 ms    16 ms  lo0-central10.ptn-ag02.plus.net [195.166.128.191]
 3    15 ms    15 ms    15 ms  link-a-central10.ptn-gw01.plus.net [212.159.2.132]
 4    15 ms    15 ms    16 ms  xe-1-2-0.ptw-cr01.plus.net [212.159.0.112]
 5    16 ms    16 ms     *     te-4-2.car5.London1.Level3.net [217.163.45.249]
 6    15 ms    16 ms    16 ms  ae-52-52.csw2.London1.Level3.net [4.69.139.120]
 7    19 ms    16 ms    15 ms  ae-227-3603.edge3.London1.Level3.net [4.69.166.154]
 8    17 ms    17 ms    18 ms  be3043.ccr22.lon01.atlas.cogentco.com [130.117.15.245]
 9    17 ms    17 ms    17 ms  te3-8.ccr01.lon10.atlas.cogentco.com [154.54.75.66]
10    17 ms    17 ms    17 ms  te3-2.ccr01.lon15.atlas.cogentco.com [154.54.57.234]
11    18 ms    18 ms    17 ms  te3-2.ccr01.lon14.atlas.cogentco.com [154.54.58.49]
12    18 ms    18 ms    18 ms  te0-6-0-3.rcr21.lhr01.atlas.cogentco.com [130.117.51.185]
13    18 ms    19 ms    19 ms  149.6.8.226  (cogentco peer point)
14    19 ms    18 ms    18 ms  91.198.165.76  <--------  webhost gateway Maidenhead/Slough
15    18 ms    18 ms    18 ms  bit-tech2.servers.rbl-mer.misp.co.uk [91.198.165.68]
16    18 ms    17 ms    18 ms  91.146.106.2


Quote from: AndyH
If you're on a PTN/PTW gateway, the routing should go via Level3 London and Cogent London:

Im on ptn-ag02 but its still going via Paris to my server :/
Quote

Tracing route to kitz.co.uk [185.24.98.37]
over a maximum of 30 hops:
 1    <1 ms    <1 ms    <1 ms  ZyXEL.Home [192.168.1.1]
 2    50 ms    21 ms    56 ms  lo0-central10.ptn-ag02.plus.net [195.166.128.191]
 3    16 ms    16 ms    15 ms  link-b-central10.ptn-gw02.plus.net [212.159.2.134]
 4    15 ms    15 ms    15 ms  xe-1-2-0.ptw-cr02.plus.net [212.159.0.114]
 5    17 ms    16 ms    19 ms  ae2.ptw-cr01.plus.net [195.166.129.4]
 6    16 ms    16 ms    37 ms  ae1.pcl-cr01.plus.net [195.166.129.1]
 7    16 ms    15 ms    16 ms  xe-11-2-0.edge3.London2.Level3.net [212.187.201.213]
 8    22 ms    23 ms    22 ms  vl-3201-ve-128.ebr2.London2.Level3.net [4.69.202.177]
 9    22 ms    22 ms    22 ms  ae-42-42.ebr1.Paris1.Level3.net [4.69.159.86]
10    22 ms    22 ms    22 ms  ae-91-91.csw4.Paris1.Level3.net [4.69.161.90]
11    23 ms    22 ms    22 ms  ae-4-90.edge4.Paris1.Level3.net [4.69.168.199]
12    24 ms    24 ms    24 ms  NTT-level3-2x10G.Paris.Level3.net [4.68.63.118]
13    24 ms    24 ms    24 ms  ae-0.r20.parsfr01.fr.bb.gin.ntt.net [129.250.5.136]
14    24 ms    23 ms    24 ms  as-2.r23.londen03.uk.bb.gin.ntt.net [129.250.5.8]
15    25 ms    25 ms    25 ms  ae-2.r02.londen03.uk.bb.gin.ntt.net [129.250.5.41]
16    25 ms    26 ms    25 ms  ae-2.r02.londen01.uk.bb.gin.ntt.net [129.250.3.1]
17    27 ms    25 ms    25 ms  ae-1.r03.londen01.uk.bb.gin.ntt.net [129.250.3.37]
18    26 ms    25 ms    25 ms  62.73.179.150  (Verio ntt.net peer point)
19    26 ms    26 ms    26 ms  91.198.165.76  <--------  webhost gateway Maidenhead/Slough
20    25 ms    25 ms    25 ms  kitz.servers.eqx.misp.co.uk [185.24.98.37]

From the trace above, ptn is passing me over to ptw, with then passes me over to pcl...  and from there Level3 sends me over to France.
Its not too bad atm, but come later in the evening, then lag will kick in and thats when things start to slow down.
Community Veteran
Posts: 6,824
Thanks: 1
Registered: ‎27-10-2012

Re: Weird routing via France for PN users. (Level 3)

Yeah, I am not sure in the technical explanation as to why it happens (maybe load balancing?), but if your traffic is passed over to a PCL core when on PTN/PTW, then you hit the Level3 core which is sending traffic over to Paris.
I am sure there will be a straightforward answer why Level3 are sending traffic to NTT in Paris. It wouldn't make much sense to be doing this without a reason.
Community Gaffer
Community Gaffer
Posts: 5,294
Thanks: 618
Fixes: 5
Registered: ‎04-04-2007

Re: Weird routing via France for PN users. (Level 3)

I've flagged in again.
Kelly Dorset
Broadband Service Manager