I have repeatedly verified the DNS, there is no problem there that I can find. Nobody else has reported failure looking up the IP for the PLUG site either, that I've seen.
I have just asked a friend to run some additional source-scan type tests. The results show that there is a significant percentage (roughly 15%) failure when contacting the EV1 datacenter from high-speed IP addresses, the failure rate is lower (roughly 5%) from dial-up. This is based on a small (150) sample of IP addresses he was able to borrow for the test. In every failure case, the system managed to look up the DNS record with no problems, and packet trace showed the packet was (most probably) dropped at the EV1 edge router. It's possible that there is simply a broken routing table in their routers, but if that's the case, it's consistent across their entire routing infrastructure, as if any given IP fails to connect, that IP continues to fail on all subsequent tests within a
reasonable timeframe. Further tests indicate that, for IP addresses that fail, attempting to contact other hosted sites on the EV1 network may also fail.
The host (EV1) claims that all systems are protected by their FireSlayer service. I mentioned this last month when the original thread wound it's way by (
http://lists.plug.phoenix.az.us/lurker/message/20050421.053442.a62e93c8.en.html)
These items, combined, suggest that there may be something in the way EV1 is set up (possibly, but not certainly, in their FireSlayer service) that is causing difficulty viewing the PLUG site for a non-trivial percentage of users.
I don't know the deal we have with EV1, but I would wonder whether it might make good sense to have our hosting supported by a PLUG member, with easy access should there be need, as Darin (at Deru) has offered. As a test, perhaps we might put a test site up and ask the various PLUG members who have trouble accessing the PLUG website to try to reach that site. If they can get there then that would at least show that a move to Deru might solve the problem...
==Joseph++
Alan Dayley wrote:
> Trent Shipley said:
>
>>Hypothesis: A significant number of web accounts are unable to directly
>>access the PLUG website.
>>
>>Extension: Those web accounts that cannot directly access the PLUG
>>website are disproportionately using high speed internet access.
>>
>>---
>>
>>Null Hypothesis: The number of web accounts unable to directly access
>>the PLUG website is statistically insignificant.
>>
>>====================
>>
>>There is plausible reason to suspect the hypothesis is true.
>>
>>Do we need to demonstrate that the hypothesis is true?
>>
>>How do we test the hypothesis? (It would seem to require some sort of
>>random sampling.)
>
>
> Mr. Fleming, last month, did samples from various places that confirms a
> problem exists.
>
> http://lists.plug.phoenix.az.us/lurker/message/20050420.225411.e46500a8.en.html
>
> This, along reports from other local users, defines that a significant
> access problem exists. I make no distiction between dial-up or high speed
> connections but perhaps such a disctiction is important.
>
> Given, then, that a significant problem exists, we must do the legwork to
> find the root cause and solve it. I think an approach that addresses the
> three possible sources of the problem is appropiate:
>
> DNS
> - Hans is the keeper of the DNS. As I recall, he had some adjustments to
> make that may have been the issue. I don't know if he has done said
> adjustments.
>
> Host Company
> - The host company reported to me that there is no problem or blocker on
> their end. I must take them at their word unless evidence shows
> otherwise.
>
> User ISPs
> - That leaves the individual ISPs. Users with problems need to report
> their ISP and complain. Unless there is a better way to pursue this leg
> of the stool.
>
> Alan
>
>
>
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