Has anyone had problems accessing www.unmannedspaceflight.com recently ? Since last weekend I haven't been able to access it from home but if I use a computer at work (as I'm obviously doing now ;-) ) there are no problems.
This is the only website I'm having any problems accessing so this is really weird.
Weird - it works now for the first time since last Saturday (I'm sending this from home
). And I checked many times a day so the problem was probably 'continuous'.
EDIT: I don't think this was a DNS problem because I'm getting the same address for UMSF (72.9.234.170) as I got several hours ago when I couldn't get here from home.
It's working for me now.
I've not had any problem at any point from either work or home. It can't be a server problem as it was working for most people all the time. Perhaps some sort of routing problem in the 'net somewhere.
Doug
Once in a while UMSF will "time out" and I'll get a "Page Cannot Be Displayed" message. I assume it's a 'net problem.
Could Bjorn's problem be a firewall at work? Or some network admin filtering non-work-related Internet addresses?
--Bill
EDIT: oops, I re-read the messge and the problem is at home.
I dunno...
The problem has reappeared - I again cannot access UMSF from home. There have been intermittent errors from work as well but a 'Refresh' in IE usually gets rid of these.
Maybe a routing problem. Here is a portion of 'traceroute' I did when everything worked properly yesterday:
[Snip]
8 95 ms 83 ms 83 ms ae0-6.lon11.ip.tiscali.net [213.200.77.125]
9 50 ms 52 ms 50 ms so-3-1-0.lon22.ip.tiscali.net [213.200.80.30]
10 50 ms 83 ms 54 ms ldn-b2-link.telia.net [213.248.100.193]
11 59 ms 51 ms 50 ms ldn-bb1-pos0-1-0.telia.net [213.248.74.1]
12 618 ms 330 ms 368 ms nyk-bb1-pos0-2-0.telia.net [213.248.65.90]
13 306 ms 411 ms 281 ms ash-bb1-pos6-0-0-0.telia.net [213.248.80.69]
14 227 ms 194 ms 159 ms atl-bb1-pos5-0-0.telia.net [213.248.80.142]
15 154 ms 159 ms 159 ms globalnet-103907-atl-bb1.c.telia.net [213.248.90
.54]
16 150 ms 140 ms 138 ms atl-core-a-tgi2-1.gnax.net [209.51.149.105]
17 172 ms * 173 ms gig0-1.l3-atl-5.gnax.net [209.51.131.94]
18 176 ms 172 ms 169 ms star.dnsprotect.com [72.9.234.170]
Now things look like this:
[Snip]
8 85 ms * 98 ms ae0-6.lon11.ip.tiscali.net [213.200.77.125]
9 * 52 ms 59 ms so-3-1-0.lon22.ip.tiscali.net [213.200.80.30]
10 51 ms 60 ms 62 ms lon-b2-pos1-3.telia.net [213.200.77.134]
11 83 ms 84 ms 83 ms ldn-bb1-pos0-1-0.telia.net [213.248.74.1]
12 142 ms 126 ms 128 ms nyk-bb1-pos0-2-0.telia.net [213.248.65.90]
13 187 ms 143 ms 130 ms ash-bb1-pos6-0-0-0.telia.net [213.248.80.69]
14 151 ms 147 ms 141 ms atl-bb1-pos5-0-0.telia.net [213.248.80.142]
15 143 ms 132 ms 120 ms globalnet-103907-atl-bb1.c.telia.net [213.248.90
.54]
16 128 ms 125 ms 117 ms atl-core-a-tgi2-1.gnax.net [209.51.149.105]
17 134 ms 146 ms 149 ms gig0-1.l3-atl-5.gnax.net [209.51.131.94]
18 * * * Request timed out.
19 * * * Request timed out.
20 * * * Request timed out.
21 * * * Request timed out.
22 * * * Request timed out.
23 * * * Request timed out.
24 * * * Request timed out.
25 * * * Request timed out.
26 * * * Request timed out.
27 * * * Request timed out.
28 * * * Request timed out.
29 * * * Request timed out.
30 * * * Request timed out.
Strangely I also get "Request timed out" at work but still can access UMSF...
An interesting topic just to find out on which kind of server is UMSF running ?
a curious ITer on the continent
It's a package from www.imhosted.com
Now I'm again unable to access UMSF from home. Things worked briefly (for about a day) on Monday. This is getting seriously annoying but I'm not sure where (if anywhere at all) to complain...
If anyone else apart from me and probably um3k has had similar problems I'd really like to know.
I have tried flushing the DNS cache on my machine as suggested in the previous message but to no avail.
Did you setup a hosts file ? If you did and the target ip address changed you may not be able to display the page.
Still 100% for me from both work and home- I really don't know what to suggest.
Doug
That would make a lot of sense. UMSF is indeed entirely DB driven, PHP, SQL and Apache all have to work to serve each page. If for some reason you have a local cached version perhaps with your ISP or work network - that would 'break' it.
Doug
I've had some occasional issues with UMSF not refreshing well (or at all quickly), but it's been a while since I've had a really hard time staying connected. And when I do have a problem, it's usually a SQL error and not a DNS lookup issue that's killing me.
However, I'm seeing a more subtle behavior issue lately. Keep in mind, I'll often start reading posts here, go off and do other things, and come back to read more posts -- all without logging in or out of the site.
Now we all know that when you first bring the site up, the forum and sub-forum icons show you if there are unread posts in those fora. When you get into the topic lists, of course, there is a small red flag next to individual threads if they contain unread posts.
When I leave the site up but unattended for a while (especially when displaying a given thread or sub-forum topic list) and then go back to the main forum list, the forum icons reset to an "all read" status, even if I haven't gone into those fora during this visit. I end up checking the last-post timestamps at the forum levels to see if there might be unread posts out there that I haven't seen.
It's not a huge inconvenience (if I didn't care about keeping my reading organized into fora, I could just look at the recent posts lists). But it is a glitch in the proper operation of the Invision board software, so I thought I'd mention it.
-the other Doug
I'm sure it's something that was probably looked at with the latest invision board revision - but obviously, as experience has shown - I'm not a big fan of upgrades ![]()
Doug
I have noticed this as well but it's a minor inconvenience.
The big issue for me is accessing UMSF from home. I seriously doubt it's a caching issue. When 'tracert' ends with star.dnsprotect.com (as in one of the sample traceroute outputs I posted on page 1 in this thread) I can access UMSF from home; when it doesn't I can't access it from home but can access it from work. The tracert output is identical from home and work except for the first few entries.
I wonder if this might be a problem at gig0-1.l3-atl-5.gnax.net [209.51.131.94]
At the moment I cannot access UMSF at home; several hours ago I could. The situation was similar yesterday, a 'window' for a few hours when I could access UMSF from home.
Maybe I should try complaining to my ISP and pretend I have no idea of tracert etc.
.
This is really sounding like a load balancer issue to me. Your ISP may well be using load balancers to maintain even traffic on its server nodes. If one of those goes a little bad, this is the kind of thing that can happen. And it's hard as hell to track down.
Instead of pretending ignorance of such things, it might be best to simply tell them what you know and inquire as to whether they have been doing any tests on their load balancers.
Also, it's possible that your ISP is using a larger provider's servers, and has limited control over some of the nodes it uses. And that includes load balancing on those nodes. So, that might be a good data point to pin down with them, as well -- if you can.
-the other Doug
I emailed my ISP today and included several 'tracerts' I did when things worked/didn't work etc. Hopefully I get a useful response although I am not particularly optimistic (needless to say I am not posting this message from home).
Here's an idea - whenever you have trouble - do a tracert and past the full contents here - and I'll collect a few and send them to the hosting company, just to check things from their end.
Doug
I've noticed that when I access UMSF from home after 8:00pm in the evening, the toilet in the front bathroom flushes, and it does it again each time I attempt to reload a page. It doesn't happen when I access a page through a link. When I click on an image link Monday mornings after 6:00 am, the front doorbell rings twice, causing my dog to bark and wake up the kids.
Another idea, not to solve but at least to isolate the problem.
Do you have a dynamic IP address? In such a case, have a look at it when you have connection and when you haven't. I'm wondering if it could be something related to blocked addresses or routing issues.
There are 5 blocked IP addresses currently, for people, how shall we put this, 'unwilling to participate in an mature and acceptable manor'
They are ( with the end two numbers removed for privacy )
24.88.something
69.141.something
61.11.something
61.17.something
65.121.something
If they coincide with anyone who's having trouble - I'll unblock and see what happens.
Doug
I have the same problems: It works at work, it doesn't at home. I have no idea what to do.
Analyst
Same problem here. I read UMSF at work while eating dinner each evening. At home, on AOL, I have no luck signing on. It hasn't always been this way. When I first discovered UMSF last September I would read from home, and bookmarked it as one of my "favorites". But now I have virtually given up trying to get home access. But after reading this thread I tried again yesterday, and this morning and could not sign on from home.
David
I would be very interested in seeing a 'tracert' from those who cannot access UMSF from home (like me). For those who don't know what I'm talking about, in Windows simply open a Command Prompt (aka 'DOS Prompt') and type the following:
tracert www.unmannedspaceflight.com
Then post the result here (and needless to say, do this from a machine that cannot access UMSF).
You should get something that looks like what I posted in http://www.unmannedspaceflight.com/index.php?showtopic=2170&st=28
If it ends as my tracert (at gig0-1.l3-atl-5.gnax.net [209.51.131.94]) it might be time for Doug to complain to the company hosting UMSF because in that case it looks (to me at least) that someone is (probably inadvertently) preventing some specific traffic from reaching UMSF.
tracert's people - tracert - then I can submit them to the hosting firm - lets find a common trouble-'node' and figure it out
Doug
I will do, now I know what you're talkig about "tracert". But it's friday, I won't be at work before monday. Doug please post an e-mail adress or send me a PM with the adress. I will send you the "tracert" from home. I can't otherwise, it's the nature of this problem.
Analyst
Any news? I have sent you a tracert, Doug.
There's a common node that's causing trouble, but no news yet.
Doug
Hmmm... this looks like a trace from a computer that can access UMSF.
Nothing - they've said they're investigating it, but because the vast majority are having no trouble at all, they're working hypothesis is that it isnt their end, it's elsewhere.
Doug
I've submitted 3 more tracert's to the host. Flicking between my internet connection and a neigbours internet connection ( Plunet ADSL and NTL Cable ) - mine works, the neigbours doesnt. Who know how many people have just given up on the place - and the coincidence of this problem first appearing with a drop in total visit numbers for Feb is too much to leave un-attended - so I'm going to keep hacking at the hosting firm till they correct it.
Doug
This is great news. I contacted my ISP and (as I was sure of beforehand) apparently no problem on their end. The person I spoke to even was able to access UMSF. Even though this doesn't prove anything I am sure the problem is not with my ISP. UMSF is the only website I have had problems accessing from home and I visit lots of websites regularly. Also I am not the only one having this problem.
BTW this problem has persisted for over a month now. For the first 10 days or so there were intermittent brief periods when I was able to access UMSF from home but this problem has been continuous from roughly February 10.
i'm gonna add this to the this thread as it is an access problem:
since the most recent invision update UMSF crashes safari on my mac, and i mean all the time. nothing else (and i get throught a lot of other stuff) crashes safari but UMSF.
i'm currently running osx 10.3.9 (yes yes i know i need to get 10.4) and safari version: 1.3.2 (312.5).
anyone else having this problem?
And I'm getting nothing back from the host either. It's annoying me more than it's annoying any of you, believe me.
Doug
And the past week or so I've been getting "The page cannot be displayed" warning:
"The page you are looking for is currently unavailable. The Web site might be experiencing technical difficulties, or you may need to adjust your browser settings."
It seems like the Browser times out.
--Bill
EDIT: server IP address: 209.215.191.34
client IP address: 209.214.109.58
I need the IP of any connection from which people can not get to the site from. As many as possible would be good. It is clearly a problem at the hosts end of the pipe, but they're attempting to deny it.
Doug
From the host
"Please note that the ip 10.89.23.254 is blocked in our datacentre. We have contacted them and they will unblock it as soon as possible.
And regarding the other two ips 152.163.164.30 and 62.104.210.47. Please note that these are not blocked in our servers."
If the second and third IP's are yours - try contacting your ISP.
Doug
Everything works now and I can access UMSF from home !!?
For the first time since mid/early February. It didn't work yesterday.
For the record, tracert now returns this
:
C:\>tracert www.unmannedspaceflight.com
Tracing route to unmannedspaceflight.com [72.9.234.170]
over a maximum of 30 hops:
1 <1 ms <1 ms <1 ms my.router [192.168.1.1]
2 14 ms 15 ms 14 ms 217.151.181.57
3 15 ms 14 ms 14 ms 217.151.181.58
4 16 ms 16 ms 15 ms 217.151.181.62
5 17 ms 17 ms 18 ms fe2-0.core01.islandssimi.is [213.176.138.66]
6 19 ms 18 ms 19 ms fe0-0.uk-gw.islandssimi.is [213.176.138.5]
7 541 ms 500 ms 487 ms 213.176.138.254.in.is [213.176.138.254]
8 234 ms 229 ms 220 ms ae0-6.lon11.ip.tiscali.net [213.200.77.125]
9 445 ms 450 ms * so-3-1-0.lon22.ip.tiscali.net [213.200.80.30]
10 462 ms 269 ms 283 ms ldn-b2-link.telia.net [213.248.100.193]
11 546 ms 535 ms 455 ms ldn-bb1-pos0-1-0.telia.net [213.248.74.1]
12 355 ms * 519 ms nyk-bb1-pos0-2-0.telia.net [213.248.65.90]
13 576 ms 580 ms 563 ms ash-bb1-pos6-0-0-0.telia.net [213.248.80.69]
14 251 ms 270 ms 265 ms atl-bb1-pos5-0-0.telia.net [213.248.80.142]
15 311 ms 310 ms 321 ms globalnet-103907-atl-bb1.c.telia.net [213.248.90.54]
16 355 ms 368 ms 373 ms atl-core-a-tgi2-1.gnax.net [209.51.149.105]
17 668 ms 664 ms 777 ms L3-ATL-5.gnax.net [209.51.131.94]
18 184 ms 185 ms 185 ms star.dnsprotect.com [72.9.234.170]
Trace complete.
Whatever has been done: It works from home for the first time for weeks. THX!
Analyst
Yes!!!!! It is working for me, too.
David
Well, this only worked for a few hours
. Now I can no longer access UMSF from home
.
C:\>tracert www.unmannedspaceflight.com
Tracing route to unmannedspaceflight.com [72.9.234.170]
over a maximum of 30 hops:
1 <1 ms <1 ms <1 ms my.router [192.168.1.1]
2 15 ms 15 ms 14 ms 217.151.181.57
3 14 ms 15 ms 15 ms 217.151.181.58
4 16 ms 16 ms 17 ms 217.151.181.62
5 18 ms 17 ms 18 ms fe2-0.core01.islandssimi.is [213.176.138.66]
6 19 ms 19 ms 19 ms fe0-0.uk-gw.islandssimi.is [213.176.138.5]
7 505 ms 500 ms 544 ms 213.176.138.254.in.is [213.176.138.254]
8 257 ms 233 ms 230 ms ae0-6.lon11.ip.tiscali.net [213.200.77.125]
9 558 ms 543 ms 554 ms so-3-1-0.lon22.ip.tiscali.net [213.200.80.30]
10 574 ms * 225 ms ldn-b2-link.telia.net [213.248.100.193]
11 598 ms 591 ms 600 ms ldn-bb1-pos0-1-0.telia.net [213.248.74.1]
12 798 ms 729 ms 739 ms nyk-bb1-pos0-2-0.telia.net [213.248.65.90]
13 689 ms 662 ms 632 ms ash-bb1-pos6-0-0-0.telia.net [213.248.80.69]
14 186 ms 188 ms 190 ms atl-bb1-pos5-0-0.telia.net [213.248.80.142]
15 676 ms 622 ms 624 ms globalnet-103907-atl-bb1.c.telia.net [213.248.90.54]
16 622 ms 595 ms 626 ms atl-core-a-tgi2-1.gnax.net [209.51.149.105]
17 327 ms 320 ms 325 ms L3-ATL-5.gnax.net [209.51.131.94]
18 * * * Request timed out.
19 * * * Request timed out.
20 * * * Request timed out.
21 * * * Request timed out.
22 * * * Request timed out.
23 * * * Request timed out.
24 * * * Request timed out.
25 * * * Request timed out.
26 * * * Request timed out.
27 * * * Request timed out.
28 * * * Request timed out.
29 * * * Request timed out.
30 * * * Request timed out.
Trace complete.
Maybe I'm getting impatient but are there any news of this issue ? It would be particularly interesting to know (if possible) exactly *what* was different last Monday because back then I and apparently more UMSF members could access UMSF from home for the first time for weeks. Unfortunately this lasted only a few hours.
I am still able to access UMSF from home. (Although I am doing so from work at the moment).
David
It's not working for me anymore eighter.
Analyst
Now I'm suddenly able to access UMSF from home again
. Not sure it will last more than a few hours though...
My access to UMSF has improved with my new ISP (bellsouth.net) but I'm still having intermittent glitches. When it does timeout it doesn't make it past "209.215.191.22", which I presume is the modem pool at my local Bellsouth node. Oddly, I've traced some "timeout" problems to the 'puter being put in "standby mode", which clears up on a re-boot.
FWIW, here is a tracert on a good-connecting day. It's been years since I've messed with this, but I can see where it wanders around the bellsouth network for a while and makes it over to Doug's network.
--Bill
C:\>tracert 72.9.234.170
Tracing route to star.dnsprotect.com [72.9.234.170]
over a maximum of 30 hops:
1 176 ms 164 ms 167 ms 209.215.191.22
2 326 ms 167 ms 175 ms 209.215.191.59
3 319 ms 159 ms 167 ms 205.152.92.161
4 327 ms 183 ms 160 ms 65.83.237.116
5 311 ms 183 ms 167 ms pxr00asm-0-0-0.bellsouth.net [65.83.236.0]
6 315 ms 160 ms 159 ms so-1-0-0.gar1.Atlanta1.Level3.net [67.72.8.5]
7 302 ms 175 ms 167 ms ae-22-52.car2.Atlanta1.Level3.net [4.68.103.35]
8 174 ms 175 ms 175 ms 4.78.210.6
9 326 ms 183 ms 185 ms 209.51.149.109
10 344 ms 193 ms 175 ms L3-ATL-5.gnax.net [209.51.131.98]
11 327 ms 191 ms 185 ms star.dnsprotect.com [72.9.234.170]
Trace complete.
Powered by Invision Power Board (http://www.invisionboard.com)
© Invision Power Services (http://www.invisionpower.com)