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Date: Fri, 6 Aug 2004 11:54:50 +0100 From: John Lyons <john.lyons@heanet.ie> To: nanog@merit.edu In-Reply-To: <16657.57102.396491.454500@roam.psg.com> Errors-To: owner-nanog-outgoing@merit.edu > 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@heanet.ie
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