North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: different thinking on exchanging traffic
Sean Donelan writes: >>> Currently about 5%-15% of my traffic gets routed over the UtahREP. >> >>please describe measurement technique. > [snip] >Traffic elasticity is an interesting issue. How much traffic is >being exchanged, which wouldn't otherwise be exchanged? In other words >is the existance of the local exchange point actually causing more >traffic to be generated. This is a what if question. If you didn't >have the local exchange, would you still haul highly elastic traffic >like USENET across your long-haul links? Or is it highly elastic >traffic like at-home students or employees who use a local ISP modem >pool for access instead of dialing directly into the remote institution. [snip] >And finally, usability. The I know it when I see it issue. The right >combination of adequate speed, low latency, and little congestion that >gives the end-user a 'good' connection. Since we still have a hard time >defining what is 'good' this is the hardest one to measure. I can really >only measure this indirectly, such as the number of customer compliants or >through surveys of non-customers. In general, customers of ISPs connected >to the local exchange point report better connections to resources on ISPs >also attached to the local exchange point than to those same ISPs before >the exchange point. Something of interest here might be centralising services at NAPs. For example, putting a news server at the NAP running Cylone, the NAP purchasing a news only T1 (or whatever) to serve the box, and then participants who would like a news feed getting it directly from this box and paying extra. Another intersting saving is via proxy neighboring over a local NAP. Rather significant traffic savings have been observed in local NAPs inside Australia by participants neighboring squids. AU being a rather heavy user of caching compared to the US. Other ideas were tossed around including a central DNS server/cache, gaming servers, etc.. and one peering network inside AU (Ausbone) is doing this. (But they provider inter-NAP links, which isn't really applicable here in this discussion). Just out of curiousity, since I'm not in the US, how much would a T1 cost point to point inside a city, without default IP transit? With IP transit? T3? Anything else 'common' ? Adrian
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