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Connection weirdness every hour @ 38mins past the hour. PTW-AG1

kitz
Rising Star
Posts: 817
Thanks: 46
Registered: 08-06-2007

Connection weirdness every hour @ 38mins past the hour. PTW-AG1

Since the early hours this morning Ive been noticing errors in MailWasher logs.
I use Mailwasher to remotely & automatically clear any spam from my server every 10 mins, but I also filter my PN mail through there too.
The errors have been showing up every hour at 38 minutes past the hour for both my dedicated server and also PN mail  indicating that something is happening every hour stopping me from accessing either mail boxes.   Other than at 38 mins past the hour everything else seems ok.

I checked here on the forums earlier on today to see if anyone else was seeing something similar, but I didnt see anything, so resolved to look into it further when I had chance to properly do so.
Anyhow the crux is I just noticed the SS report that there are problems with ptw-ag1,
Ive just done a tracert and sure enough.
Quote
 lo0-central10.ptw-ag01.plus.net [195.166.128.195


Aside from the times around 38 mins past the hour, everything else seems ok.  Bear in mind it only auto checks every 10 mins so it could also be affecting a few mins either side.
Thought Id mention it... as it may help you track down the fault.    Some script running every hour on the half-hour thats crapping out that pipe?  
7 REPLIES
Plusnet Staff
Plusnet Staff
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Registered: 26-11-2011

Re: Connection weirdness every hour @ 38mins past the hour. PTW-AG1

Thanks very much for the information and for supplying it.
I'll pass that on to engineering to take a look.
Chris Pettitt
Cloud Environments Engineer
kitz
Rising Star
Posts: 817
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Registered: 08-06-2007

Re: Connection weirdness every hour @ 38mins past the hour. PTW-AG1

oops just noticed, its not only at 38 mins past..  there was also another at 15:18.
Now Im sat at the PC, I'll see if I can catch a time when it starts and finishes.
Community Veteran
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Registered: 15-06-2007

Re: Connection weirdness every hour @ 38mins past the hour. PTW-AG1

kitz
Rising Star
Posts: 817
Thanks: 46
Registered: 08-06-2007

Re: Connection weirdness every hour @ 38mins past the hour. PTW-AG1

WOW... It well and truely broke that time.    Cry
This is what happened
16:18

Connection working fine
Quote
Tracing route to kitz.co.uk [185.24.98.37]
over a maximum of 30 hops:
 1    85 ms    99 ms    99 ms  dsldevice.lan [192.168.1.254]
 2    20 ms    12 ms    12 ms  lo0-central10.ptw-ag01.plus.net [195.166.128.195]
 3    12 ms    12 ms    12 ms  link-b-central10.ptw-gw02.plus.net [212.159.2.146]
 4    12 ms    12 ms    12 ms  xe-4-2-0.ptw-cr02.plus.net [212.159.0.242]
 5    12 ms    12 ms    12 ms  ae2.ptw-cr01.plus.net [195.166.129.4]
 6     *       12 ms     *     te-4-2.car5.London1.Level3.net [217.163.45.249]
 7    12 ms    12 ms    12 ms  ae-52-52.csw2.London1.Level3.net [4.69.139.120]
 8    12 ms    12 ms    61 ms  ae-233-3609.edge5.london1.Level3.net [4.69.166.49]
 9    13 ms    13 ms    13 ms  ae-3.r00.londen10.uk.bb.gin.ntt.net [129.250.9.125]
10    15 ms    15 ms    15 ms  ae-15.r02.londen03.uk.bb.gin.ntt.net [129.250.3.30]
11    14 ms     *       15 ms  ae-2.r02.londen01.uk.bb.gin.ntt.net [129.250.3.1]
12    15 ms    51 ms    27 ms  po-3.r01.londen01.uk.bb.gin.ntt.net [129.250.6.52]
13    14 ms    14 ms    14 ms  62.73.179.150
14    15 ms    14 ms    15 ms  switch-004.sl5.misp.co.uk [91.146.104.3]
15    15 ms    14 ms     *     kitz.servers.eqx.misp.co.uk [185.24.98.37]


16.20.    Catch the start of the problem

Quote

Tracing route to kitz.co.uk [185.24.98.37]
over a maximum of 30 hops:
 1    60 ms    99 ms    99 ms  dsldevice.lan [192.168.1.254]
 2    78 ms    86 ms   111 ms  lo0-central10.ptw-ag01.plus.net [195.166.128.195]
 3     *        *        *     Request timed out.
 4     *        *        *     Request timed out.
 5     *        *        *     Request timed out.
 6     *        *        *     Request timed out.
 7     *        *        *     Request timed out.


16:22
No connection, no webpages, unable to resolve DNS
Quote

C:\Users\kitz>tracert www.kitz.co.uk
Unable to resolve target system name www.kitz.co.uk.
C:\Users\kitz>tracert www.bbc.co.uk
Unable to resolve target system name www.bbc.co.uk.


16:28
Unable to access mail
Quote

kitz.co.uk Session 45 05/02/2013 started 16:28:27 finished 16:28:48 Connection timed out
kitz(PN)  Session 46 05/02/2013 started 16:28:27 finished 16:28:48 Connection timed out


16:30
Have DNS again but unable to get to get to PTW - AG01
Quote

Tracing route to www.bbc.net.uk [212.58.246.92]
over a maximum of 30 hops:
 1    84 ms    99 ms    99 ms  dsldevice.lan [192.168.1.254]
 2     *        *        *     Request timed out.
 3     *        *        *     Request timed out.
 4     *        *        *     Request timed out.
 5     *        *        *     Request timed out.
 6     *        *        *     Request timed out.
 7     *        *        *     Request timed out.
 8     *        *        *     Request timed out.
 9     *        *        *     Request timed out.
10     *        *        *     Request timed out.
11     *        *        *     Request timed out.
12     *     lo0-central10.ptw-ag01.plus.net [195.166.128.195]  reports: Destin
ation net unreachable.


16:38
Still unable to access mail
kitz.co.uk Session 47 05/02/2013 started 16:38:27 finished 16:28:48 Connection timed out
kitz(PN)  Session 48 05/02/2013 started 16:38:27 finished 16:28:48 Connection timed out

16:40
Unable to reach ptw-ag01
Quote

Tracing route to www.bbc.net.uk [212.58.246.92]
over a maximum of 30 hops:
 1    97 ms    99 ms    99 ms  dsldevice.lan [192.168.1.254]
 2     *        *        *     Request timed out.
 3     *        *        *     Request timed out.
 4     *        *        *     Request timed out.
 5     *        *        *     Request timed out.
 6     *     lo0-central10.ptw-ag01.plus.net [195.166.128.195]  reports: Destin
ation net unreachable.

16:42   No internet connection and DNS goes again.
Quote
C:\Users\kitz>tracert www.kitz.co.uk
Unable to resolve target system name www.kitz.co.uk.

16:48  Still nothing
C:\Users\kitz>tracert www.kitz.co.uk
Unable to resolve target system name www.kitz.co.uk.
Have sync
Upstream rate: 20000 Kbps, Downstream rate = 79999 Kbps
System uptime: 78 days 22 hours 29 min 41 sec
AS uptime: 78 days 22 hours 29 min 53 sec

Have PPPoe
Type: PPPoE
Uptime: 0 days, 13:31:09
IP Address:


PPPoE uptime corresponds with what ever happened at 02:28 this morning -  see
TBBQM

16:58 still broke  
17:01 Working again but now on a different gateway
Quote
Tracing route to kitz.co.uk [185.24.98.37]
over a maximum of 30 hops:
 1    72 ms    99 ms    99 ms  dsldevice.lan [192.168.1.254]
 2    13 ms    12 ms    12 ms  lo0-central10.ptw-ag01.plus.net [195.166.128.195]
 3    12 ms    12 ms    11 ms  link-b-central10.ptw-gw02.plus.net [212.159.2.146]
 4    12 ms    12 ms    12 ms  xe-4-2-0.ptw-cr02.plus.net [212.159.0.242]
 5    12 ms    12 ms    12 ms  ae2.ptw-cr01.plus.net [195.166.129.4]
 6    12 ms    12 ms    12 ms  te-4-2.car5.London1.Level3.net [217.163.45.249]
 7    12 ms    11 ms    12 ms  ae-52-52.csw2.London1.Level3.net [4.69.139.120]
 8    12 ms    12 ms    11 ms  ae-233-3609.edge5.london1.Level3.net [4.69.166.49]
 9    14 ms    13 ms    13 ms  ae-3.r00.londen10.uk.bb.gin.ntt.net [129.250.9.125]
10    15 ms    15 ms    15 ms  ae-15.r02.londen03.uk.bb.gin.ntt.net [129.250.3.30]
11    15 ms    14 ms    14 ms  ae-2.r02.londen01.uk.bb.gin.ntt.net [129.250.3.1]
12    14 ms    13 ms    14 ms  po-3.r01.londen01.uk.bb.gin.ntt.net [129.250.6.52]
13    14 ms    13 ms    14 ms  62.73.179.150
14    15 ms    14 ms    14 ms  switch-004.sl5.misp.co.uk [91.146.104.3]
15    14 ms    15 ms    14 ms  kitz.servers.eqx.misp.co.uk [185.24.98.37]
Trace complete.

The shunt in gateway didnt affect my pppoe session though.
Type: PPPoE
Uptime: 0 days, 13:49:28
Community Gaffer
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Registered: 05-04-2007

Re: Connection weirdness every hour @ 38mins past the hour. PTW-AG1

Yep data transfer temporarily stopped for the gateway, it's back up and working now but we may need to reload it shortly. If so we'll service status it although it may be at short  notice.
If this post resolved your issue please click the 'This fixed my problem' button
 Chris Parr
 Plusnet Staff
kitz
Rising Star
Posts: 817
Thanks: 46
Registered: 08-06-2007

Re: Connection weirdness every hour @ 38mins past the hour. PTW-AG1

Quote from: Oldjim
this is almost certainly relevant

ty OJ, youre likely correct.  That post wasnt there when I originally came in to see if I could see anything relevant at about 1pm, which is when I checked all the current posts.
At 4pm after seeing the SS,  I thought it may be wise to advise PN, that I wasnt seeing speed issues, just total loss of being able to access the internet.
I thought how the fact it was repeat happening at the same time each hour may be of some relevance for their trouble shooting.  Huh


Quote
data transfer temporarily broke for the gateway


oops lol..  oh well I'll stay on ptw-gw02. for now  Cheesy
Cheers
Superuser
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Posts: 3,292
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Fixes: 12
Registered: 10-04-2007

Re: Connection weirdness every hour @ 38mins past the hour. PTW-AG1

This problem bit me at about the same time as Kitz reports.  Worse, I was temporarily unable to access the Router  (Thompson TG585 v7) for about 15 minutes - then things struggled back to life.
Checked the forum and saw this thread and swapped Gateways.
Most inconvenient midway through a Wordpress site upgrade for a new client Crazy
SWMBO reports that no *new* expletives were used, but there was an interesting arrangement of some old favourites.   Off to check if the upgrade was successful?
Maurice