ADSL suppliers

James Cronin james at unfortu.net
Thu Oct 11 23:41:54 BST 2001


> >  6  fe0-1-0.core3.44whit.router.easynet.net (212.134.10.14)  86.150 ms  75.375 ms  76.424 ms
> >  7  bt-dsl2.core.44whit.router.easynet.net (212.134.10.4)  75.534 ms  76.924 ms  76.742 ms
> >  8  router.tao.org.uk (212.135.162.49)  122.205 ms  120.919 ms  120.946 ms
> 
> Yay, it really looks like I win in terms of routability.
> On an IP level Easynet HQ in Whitfield St is the next hop from my router
> in Brighton.

Mine used to be like that - but now I get the extra BT internal hops
inbetween.

Seemed to appear when(ish) the 2nd fat pipe into Easynet was installed.

We're on different ones (note bt-dsl1.core and bt-dsl2.core)

traceroute to bt-dsl1.27burt.router.unfortu.net (212.135.203.97), 64 hops max, 40 byte packets
 1  fa0-0.core4.44whit.router.easynet.net (195.40.6.129)  0.765 ms  0.818 ms  0.820 ms
 2  fa2-0-0.core2.44whit.router.easynet.net (195.40.1.7)  1.096 ms  1.047 ms  0.949 ms
 3  bt-dsl1.core.44whit.router.easynet.net (212.134.10.3)  1.710 ms  1.085 ms  1.718 ms
 4  217.32.63.233 (217.32.63.233)  5.023 ms  4.785 ms  5.723 ms
 5  217.32.63.163 (217.32.63.163)  5.183 ms  4.198 ms  5.560 ms
 6  bt-dsl1.27burt.router.unfortu.net (212.135.203.97)  21.012 ms  23.004 ms  19.198 ms

I _still_ don't like this though:

bash-2.03$ traceroute www.bt.net
traceroute to www.bt.net (193.113.211.125), 30 hops max, 40 byte packets
 1  bt-dsl1.27burt.router.unfortu.net (212.135.203.97)  8.756 ms  8.670 ms  8.84
7 ms
 2  217.32.63.162 (217.32.63.162)  23.534 ms  24.346 ms  33.138 ms
 3  hg-access6-lo0.ilford.mdip.bt.net (62.6.41.16)  27.892 ms  27.467 ms  34.562
 ms
 4  core2-pos6-0.ilford.ukcore.bt.net (194.72.20.221)  27.391 ms  29.047 ms  27.
374 ms
 5  core2-pos10-0.bletchley.ukcore.bt.net (62.6.196.221)  28.467 ms  30.967 ms
30.085 ms
 6  core2-pos13-1.manchester.ukcore.bt.net (62.6.196.125)  32.165 ms  33.444 ms
 32.168 ms
 7  vhsaccess1-pos8-0.manchester.fixed.bt.net (62.6.196.202)  32.638 ms  34.484
ms  33.385 ms
 8  int0057-p.vhsaccess1.manchester.fixed-nte.bt.net (213.121.156.2)  45.310 ms
 39.129 ms  38.364 ms
 9  193.113.179.36 (193.113.179.36)  41.521 ms  40.081 ms  37.925 ms
10  193.113.59.133 (193.113.59.133)  38.514 ms  40.604 ms  38.923 ms

(spot the obvious weirdism)

J.
x






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