low-latency bandwidth for cheap?
John Lyons
john.lyons at heanet.ie
Fri Aug 6 10:54:50 UTC 2004
> verizon / lavanet (hawi to honolulu, 25 mins air time by plane)
>
> 64 bytes from 64.65.95.73: icmp_seq=0 ttl=64 time=20.637 ms
> 64 bytes from 64.65.95.73: icmp_seq=1 ttl=64 time=22.186 ms
> 64 bytes from 64.65.95.73: icmp_seq=2 ttl=64 time=21.965 ms
> 64 bytes from 64.65.95.73: icmp_seq=3 ttl=64 time=21.723 ms
> 64 bytes from 64.65.95.73: icmp_seq=4 ttl=64 time=21.538 ms
>
> qwest / iinet (30 miles from bainbridge to hellview wa us)
>
> 64 bytes from 209.20.186.1: icmp_seq=0 ttl=63 time=67.008 ms
> 64 bytes from 209.20.186.1: icmp_seq=1 ttl=63 time=67.700 ms
> 64 bytes from 209.20.186.1: icmp_seq=2 ttl=63 time=56.696 ms
> 64 bytes from 209.20.186.1: icmp_seq=3 ttl=63 time=60.249 ms
>
> i do not know why and can get no useful info on provisioning.
> i know iinet is redback.
It's more than likely interleaving which is causing the latency,
it's used in order to reduce line errors (and to increase reach)
but a side effect is that it increases latency.
The verizon connection is more than likely not using interleaving
while the Qwest connection is.
John
--
John Lyons Phone: +353-1-660-9040
Network Engineer Fax: +353-1-660-3666
HEAnet Ltd. Email: john.lyons at heanet.ie
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