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Author Topic: not funny  (Read 4773 times)

tufinhas

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  • Posts: 29
not funny
« on: July 28, 2008, 07:37:21 PM »

  2    11 ms    10 ms    10 ms  dial-b1-169-210.telepac.pt [194.65.169.210]
  3    19 ms    18 ms    18 ms  dial-b1-174-125.telepac.pt [194.65.174.125]
  4    18 ms    18 ms    18 ms  ge-1-9.lcat4.telepac.net [194.65.12.162]
  5    20 ms    19 ms    25 ms  lis2-cr1-po-0-2-4-1.cprm.net [195.8.0.225]
  6   135 ms   133 ms   133 ms  was1-cr1-po-2-0.cprm.net [195.8.0.226]

  7   135 ms   142 ms   135 ms  ash-ix.he.net [206.223.115.37]
  8   231 ms   230 ms   230 ms  10gigabitethernet1-2.core1.ams1.he.net [72.52.92.98]
  9   230 ms   230 ms   230 ms  tserv11.ams1.ipv6.he.net [216.66.84.46]

before lisbon -> london (good pings)
now lisbon -> washington (bad pings)

who should fix this?

  1    <1 ms    <1 ms    <1 ms  2001:470:
  2   232 ms   231 ms   232 ms  dragoon-1.tunnel.tserv11.ams1.ipv6.he.net [2001:470:
  3   238 ms   232 ms   242 ms  gige-g2-20.core1.ams1.he.net [2001:470:0:7d::1]
  4   243 ms   243 ms   243 ms  dk-ore.nordu.net [2001:7f8:1::a500:2603:1]
  5   253 ms   253 ms   244 ms  dk-uni.nordu.net [2001:948:0:f055::2]
  6   253 ms   260 ms   260 ms  se-tug.nordu.net [2001:948:0:f056::1]
  7   265 ms   268 ms   264 ms  helsinki0-rtr.funet.fi [2001:948:0:f035::2]
  8   264 ms   268 ms   264 ms  csc4-g3100-helsinki0.ipv6.funet.fi [2001:708:0:f000:0:1000:40:2]
  9   267 ms   266 ms   260 ms  ftp.funet.fi [2001:708:10:9::20:1]

 :'(
« Last Edit: July 28, 2008, 07:42:27 PM by dragoon »
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broquea

  • Sr. Network Engineer, HE.NET AS6939
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  • Posts: 1723
Re: not funny
« Reply #1 on: July 28, 2008, 09:29:35 PM »

The ipv4 return-path to that first IP before your unlisted hop #1 goes through C&W, and seems to spike once C&W hands off to CPRM:

 1  gige-g2-20.core1.ams1.he.net (216.66.84.45)  3.828 ms  10.633 ms  0.722 ms
 2  amsix.xcr1.amd.cw.net (195.69.145.144)  0.283 ms  0.278 ms  0.287 ms
 3  xe-0-1-0.xcr1.lsw.cw.net (195.2.25.101)  7.889 ms
 4  xe-4-1-0.xcr1.lnd.cw.net (195.2.25.54)  7.582 ms  8.029 ms  7.599 ms
 5  ge-5-0-0.dcr2.lnd.cw.net (195.2.25.6)  8.184 ms  8.174 ms  8.184 ms
 6  so-7-0-0-dcr1.esx.cw.net (195.2.9.146)  31.142 ms
 7  so-2-0-0-dcr1.mad.cw.net (195.2.9.121)  31.428 ms  31.431 ms  31.439 ms
 8  ge-3-1-0-zcr1.mad.cw.net (195.2.11.202)  31.288 ms
 9  lis1-cr1-te0-0-0-0.cprm.net (195.8.0.77)  130.851 ms  130.726 ms  130.880 ms
10  lis2-cr1-te-0-0-1-0.cprm.net (195.8.30.145)  131.411 ms  131.300 ms  131.172 ms
11  telepac2.cprm.net (195.8.30.146)  130.587 ms  130.553 ms  130.753 ms
12  194.65.12.49 (194.65.12.49)  130.596 ms  130.996 ms  131.029 ms
13  213.13.135.174 (213.13.135.174)  130.730 ms  130.197 ms  130.150 ms
14  213.13.135.157 (213.13.135.157)  131.177 ms  130.726 ms  131.036 ms
15  * * *
16  * * *
(etc.)

Maybe they have saturation on their peering/transit (whatever that connection is).

I can see if CPRM has peering information in EU and is at a mutual exchange. If you have any, we can try and use it.

Tracing to funet.fi from the tunnel-server seems pretty clean, so must be the overhead of that (possibly) saturated connection:

traceroute6 to 2001:708:10:9::20:1 (2001:708:10:9::20:1), 64 hops max, 12 byte packets
 1  gige-g2-20.core1.ams1.he.net  0.355 ms  6.213 ms  0.137 ms
 2  dk-ore.nordu.net  11.984 ms  11.819 ms  11.832 ms
 3  se-fre.nordu.net  21.634 ms dk-uni.nordu.net  12.840 ms se-fre.nordu.net  21.623 ms
 4  se-tug.nordu.net  25.419 ms se-tug.nordu.net  25.570 ms se-tug.nordu.net  25.566 ms
 5  helsinki0-rtr.funet.fi  32.146 ms  32.148 ms  28.656 ms
 6  csc4-g3100-helsinki0.ipv6.funet.fi  32.460 ms  29.204 ms  28.951 ms
 7  ftp.funet.fi  35.970 ms  32.442 ms  35.817 ms
« Last Edit: July 28, 2008, 10:22:32 PM by broquea »
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tufinhas

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  • Posts: 29
Re: not funny
« Reply #2 on: July 29, 2008, 08:11:11 AM »

it's ok today  :)

  2    10 ms    10 ms    11 ms  dial-b1-169-210.telepac.pt [194.65.169.210]
  3    19 ms    17 ms    18 ms  dial-b1-174-93.telepac.pt [194.65.174.93]
  4    17 ms    17 ms    17 ms  ge-1-5.lcat4.telepac.net [194.65.12.146]
  5    20 ms    19 ms    19 ms  lis2-cr1-po0-0-4-0.cprm.net [195.8.0.69]
  6    51 ms    51 ms    50 ms  lon1-cr1-po12-0-0.cprm.net [195.8.0.70]
  7    52 ms    52 ms    52 ms  ams1-cr1-po-2-0.cprm.net [195.8.0.190]
  8    53 ms    52 ms    52 ms  gsr12416.ams.he.net [195.69.145.150]
  9    52 ms    52 ms    52 ms  tserv11.ams1.ipv6.he.net [216.66.84.46]
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