Routing Issues on FTTC

Guys, I am having issues connecting to forums.overclockers.co.uk
I `ve never had problems before and I strongly suspect that the problem is NOT with my setup.
Could someone please try the site and perhaps also post a ping or a traceroute?
Thanks in advance!

Further to my last post, I have tried `gateway hopping`.
Interestingly I can reach the website instantly via `dsl7` but cannot reach it via `dsl6` or `dsl8`.
Have Zen introduced new gateways recently? If so, there may be some routing issues with some of these new gateways.

The website seems to respond OK (Firefox on Windoze XP)

Ping says destination port unreachable

Tracing route to forums.overclockers.co.uk [185.103.4.11]
over a maximum of 30 hops:

1 <1 ms <1 ms <1 ms Vigor 130.router
2 16 ms 22 ms 15 ms vt1.cor1.lond2.ptn.zen.net.uk
3 16 ms 16 ms 16 ms ae-17.agg3.lond2.ptn.zen.net.uk
4 16 ms 35 ms 28 ms e1-3.er1.thn.as50056.net
5 16 ms 22 ms 24 ms ve160.er2.thn.as50056.net
6 16 ms 19 ms 16 ms ve940.er11.ldx.as50056.net
7 16 ms 16 ms 16 ms ve933.er8.vta.as50056.net
8 forums.overclockers.co.uk [185.103.4.11] reports: Destination protocol unreachable.

In reply to a post by Sandgrounder:

The website seems to respond OK (Firefox on Windoze XP)

Ping says destination port unreachable

Same thing on Virgin Media:

Tracing route to forums.overclockers.co.uk [185.103.4.11]
over a maximum of 30 hops:

1 <1 ms <1 ms <1 ms moorland-rtr1.core.
2 * * * Request timed out.
3 9 ms 10 ms 10 ms cosh-core-2a-xe-823-0.network.virginmedia.net [80.0.142.73]
4 * * * Request timed out.
5 * * * Request timed out.
6 18 ms 17 ms 19 ms tcl5-ic-6-ae0-0.network.virginmedia.net [62.254.85.66]
7 28 ms 24 ms 24 ms e1-3.er1.thn.as50056.net [195.66.225.217]
8 21 ms 26 ms 20 ms ve160.er2.thn.as50056.net [178.18.119.90]
9 19 ms 17 ms 17 ms ve940.er11.ldx.as50056.net [31.28.67.58]
10 35 ms 22 ms 34 ms ve933.er8.vta.as50056.net [31.28.68.46]
11 forums.overclockers.co.uk [185.103.4.11] reports: Destination protocol unreachable.

Website loads okay though

Using macOS 10.13.6 (High Sierra) via IDNet, ping gives:

PING forums.overclockers.co.uk (185.103.4.11): 56 data bytes
92 bytes from forums.overclockers.co.uk (185.103.4.11): Destination Port Unreachable
Vr HL TOS  Len   ID Flg  off TTL Pro  cks      Src      Dst
 4  5  00 5400 b780   0 0000  38  01 4bf6 192.168.1.24  185.103.4.11

Maybe the last two lines mean something to somebody

Traceroute works and gives:

traceroute to forums.overclockers.co.uk (185.103.4.11), 64 hops max, 52 byte packets
 1  www.asusnetwork.net (192.168.1.1)  3.587 ms  1.132 ms  1.244 ms
 2  redbus-gw11-10g.idnet.net (212.69.63.36)  11.592 ms  9.577 ms  12.813 ms
 3  redbus-gw7-10g.idnet.net (212.69.63.138)  10.446 ms  9.402 ms  9.482 ms
 4  redbus-gw6-10g.idnet.net (212.69.63.74)  9.086 ms  15.543 ms  62.483 ms
 5  lonap-tfm71.as50506.net (5.57.80.13)  41.463 ms  14.146 ms  9.371 ms
 6  ve160.er2.thn.as50056.net (178.18.119.90)  10.696 ms  10.666 ms  14.445 ms
 7  ve940.er11.ldx.as50056.net (31.28.67.58)  10.544 ms  10.035 ms  15.567 ms
 8  ve933.er8.vta.as50056.net (31.28.68.46)  12.869 ms  10.188 ms  14.227 ms
 9  forums.overclockers.co.uk (185.103.4.11)  9.864 ms  9.892 ms  9.617 ms

Web page is fine (Chrome).

Seems to load fine here on Zen ADSL.

Text

1 23 45 67 89 1011 1213 1415

Tracing route to 185.103.4.11 [forums.overclockers.co.uk] on port 80 Over a maximum of 30 hops.1       1 ms    1 ms    1 ms    192.168.0.1 2       22 ms   22 ms   22 ms   62.3.80.21      [losubs.subs.bng2.th-lon.zen.net.uk]3       22 ms   22 ms   22 ms   62.3.86.82      [ae1-183.cr2.th-lon.zen.net.uk] 4       *       *       *       Request timed out.5       23 ms   23 ms   23 ms   51.148.73.7     [ae-4.cor1.lond1.ptn.zen.net.uk] 6       23 ms   26 ms   23 ms   51.148.73.3     [ae-2.cor1.lond2.ptn.zen.net.uk]7       *       *       *       Request timed out. 8       52 ms   40 ms   53 ms   195.66.225.217  [e1-3.er1.thn.as50056.net]9       23 ms   23 ms   24 ms   178.18.119.90   [ve160.er2.thn.as50056.net] 10      23 ms   30 ms   152 ms  31.28.67.58     [ve940.er11.ldx.as50056.net]11      24 ms   23 ms   23 ms   31.28.68.46     [ve933.er8.vta.as50056.net] 12      Destination Reached in 23 ms. Connection established to 185.103.4.11Trace Complete.

BT Internet Windows 10

Tracing route to forums.overclockers.co.uk [185.103.4.11]
over a maximum of 30 hops:

1 1 ms <1 ms <1 ms BThomehub.home [192.168.1.254]
2 61 ms 54 ms 68 ms 172.16.13.184
3 * * * Request timed out.
4 25 ms 24 ms 25 ms 81.139.56.164
5 25 ms 25 ms 25 ms core1-hu0-6-0-7.colindale.ukcore.bt.net [213.121.192.2]
6 26 ms 27 ms 25 ms 195.99.127.83
7 26 ms 25 ms 25 ms t2c3-et-7-3-0-0.uk-lon1.eu.bt.net [166.49.211.230]
8 34 ms 33 ms 33 ms hu0-6-0-4.ccr22.lon01.atlas.cogentco.com [130.117.14.65]
9 26 ms 36 ms 25 ms 149.11.143.94
10 26 ms 25 ms 25 ms ve160.er1.the.as50056.net [178.18.119.89]
11 31 ms 26 ms 25 ms ve160.er2.thn.as50056.net [178.18.119.90]
12 26 ms 26 ms 26 ms ve940.er11.ldx.as50056.net [31.28.67.58]
13 25 ms 26 ms 26 ms ve933.er8.vta.as50056.net [31.28.68.46]
14 forums.overclockers.co.uk [185.103.4.11] reports: Destination protocol unreachable.

Trace complete.

Tracing route to forums.overclockers.co.uk [185.103.4.11]
over a maximum of 30 hops:

1 <1 ms <1 ms <1 ms fritz.box [192.168.0.254]
2 13 ms 13 ms 13 ms losubs.subs.bng1.th-lon.zen.net.uk [62.3.80.17]
3 13 ms 13 ms 13 ms ae1-177.cr2.th-lon.zen.net.uk [62.3.80.38]
4 14 ms 14 ms 14 ms vl-50.ae43.agg2.lond1.ptn.zen.net.uk [51.148.73.54]
5 14 ms 13 ms 17 ms ae-9.cor2.lond1.ptn.zen.net.uk [51.148.73.17]
6 26 ms 24 ms 14 ms ae-7.cor2.lond2.ptn.zen.net.uk [51.148.73.13]
7 15 ms 22 ms 15 ms ae-21.agg3.lond2.ptn.zen.net.uk [51.148.73.40]
8 23 ms 14 ms 16 ms e1-3.er1.thn.as50056.net [195.66.225.217]
9 22 ms 15 ms 14 ms 31.28.79.54
10 forums.overclockers.co.uk [185.103.4.11] reports: Destination protocol unreachable.

Note that it is the protocol that is unreachable, not the address. Pings fail as well

It's working for me right now. Perhaps the forums server was dropping ICMP traffic rather than responding to it.

It's worth noting that the traceroute protocol ( ICMP ) can be potentially be filtered as each hop ( although this does made debugging harder ) and it's often treated as lower priority than TCP and UDP traffic.

$ traceroute forums.overclockers.co.uk
traceroute to forums.overclockers.co.uk (185.103.4.11), 64 hops max, 40 byte packets
1 kyleakin (194.32.67.8) 0.519 ms 0.428 ms 0.349 ms
2 losubs.subs.bng1.th-lon.zen.net.uk (62.3.80.17) 5.781 ms 5.893 ms 6.047 ms
3 ae1-177.cr2.th-lon.zen.net.uk (62.3.80.38) 5.971 ms 5.753 ms 5.855 ms
4 * * *
5 ae-9.cor2.lond1.ptn.zen.net.uk (51.148.73.17) 6.423 ms
ae-4.cor1.lond1.ptn.zen.net.uk (51.148.73.7) 6.449 ms 6.437 ms
6 ae-7.cor2.lond2.ptn.zen.net.uk (51.148.73.13) 10.470 ms
ae-2.cor1.lond2.ptn.zen.net.uk (51.148.73.3) 6.955 ms
ae-7.cor2.lond2.ptn.zen.net.uk (51.148.73.13) 6.766 ms
7 * * *
8 e1-3.er1.thn.as50056.net (195.66.225.217) 8.530 ms 9.754 ms 6.417 ms
9 31.28.79.54 (31.28.79.54) 6.853 ms 6.956 ms 25.727 ms
10 forums.overclockers.co.uk (185.103.4.11) 6.587 ms 6.469 ms 7.046 ms
$

Edited by bsdnazz (Sun 02-Jun-19 13:14:24)