Stephane Bortzmeyer <[email protected]> wrote on 09/11/2012 08:38:40 AM:
> This leaves out the case of "Mom & Pop monitoring". Of course, my > employer contracts for reliable monitoring targets. But the small > SOHO? I'm reposting something I meant to send to the list, but sent to Stephane privately. He blogged about it at http://www.bortzmeyer.org/que-pinguer.html (use Google Translate if necessary). --start quote-- Why not stay closer to "home" and point the test one or two hops upstream? Generally, the problem is the last mile/kilometer - from your home/office to the ISP. Depending on your ISP, it should take a major outage to affect the internet beyond that link. And you're paying the ISP so they should be somewhat tolerant of you sending small requests to them. And perhaps do less frequent tests (10 minutes? 1 hour??) to something further upstream to test the wider internet. Of course some site might be reachable, but others down, depending on where the major break was. The Baltimore, MD train tunnel fire in 2001 ( http://en.wikipedia.org/wiki/Howard_Street_Tunnel_fire ) caused symptoms like that for me here in Buffalo, New York. Of course this scenario is not something a manufacturer like DLink or Linksys/Cisco can build into a product easily. --end quote-- Confidentiality Notice: This electronic message and any attachments may contain confidential or privileged information, and is intended only for the individual or entity identified above as the addressee. If you are not the addressee (or the employee or agent responsible to deliver it to the addressee), or if this message has been addressed to you in error, you are hereby notified that you may not copy, forward, disclose or use any part of this message or any attachments. Please notify the sender immediately by return e-mail or telephone and delete this message from your system. _______________________________________________ dns-operations mailing list [email protected] https://lists.dns-oarc.net/mailman/listinfo/dns-operations dns-jobs mailing list https://lists.dns-oarc.net/mailman/listinfo/dns-jobs
