DNS preggers again

[#1]

Quote from: Bob

There are 4 'virtual ips' that our customers use for DNS resolution, you'll probably know these by the following 4 IP addresses. 212.159.6.9 212.159.6.10 212.159.13.49 212.159.13.50

dunc you might want to read bobs post ( reply 62)

[#2]

Hi,
Having these problems intermitantly right now, causing lots of drop outs.
Tracing route to ptn-cdns01.plus.net [212.159.6.9]
over a maximum of 30 hops:
  1    3 ms    4 ms    3 ms  home.gateway [192.168.1.254]
  2    35 ms    34 ms    49 ms  lo0-plusnet.pcl-ag02.plus.net [195.166.128.39]
  3    44 ms    47 ms    45 ms  gi1-2-904.pcl-gw02.plus.net [84.92.0.141]
  4    45 ms    45 ms    44 ms  vl63.pcl-lb01.plus.net [212.159.2.252]
  5    44 ms    44 ms    44 ms  ptn-cdns01.plus.net [212.159.6.9]
Trace complete.
C:\Documents and Settings\sfice>tracert 212.159.6.9
Tracing route to ptn-cdns01.plus.net [212.159.6.9]
over a maximum of 30 hops:
  1    4 ms    3 ms    3 ms  home.gateway [192.168.1.254]
  2    36 ms    35 ms    36 ms  lo0-plusnet.pcl-ag02.plus.net [195.166.128.39]
  3    *        *        *    Request timed out.
  4    *        *        *    Request timed out.
  5    *        *        *    Request timed out.
  6    *        *        *    Request timed out.
C:\Documents and Settings\sfice>nslookup bbc.co.uk 212.159.6.9
Server:  ptn-cdns01.plus.net
Address:  212.159.6.9
Non-authoritative answer:
Name:    bbc.co.uk
Address:  212.58.254.252

[#3]

Also getting this problem real bad right now. Worse its been, pages just taking minutes to load, sometimes timing out.. really annoying.

[#4]

exactly the same problem here.
Also having problems uploading to my plsunet ftp soemtimes.

[#5]

Yep, massive trouble here again, took many attempts to get this page up, results of a tracert to BBC below;
  2    40 ms    40 ms    40 ms  lo0-plusnet.pte-ag1.plus.net [195.166.128.64]
  3    *        *        *    Request timed out.
  4    *        *        *    Request timed out.
  5    *        *        *    Request timed out.
  6    *        *        *    Request timed out.
  7    *        *        *    Request timed out.
  8    *    1211 ms    40 ms  virtual3.rbsov.bbc.co.uk [212.58.254.252]

[#6]

Having lots of problems this morning.  Here are results after having timeout/long load times for news.bbc.co.uk and also plus.net
C:\>tracert 212.159.6.9
Tracing route to ptn-cdns01.plus.net [212.159.6.9]
over a maximum of 30 hops:
 1    <1 ms    <1 ms    <1 ms  my.router [192.168.0.1]
 2    24 ms    24 ms    27 ms  lo0-plusnet.pte-ag1.plus.net [195.166.128.64]
 3     *        *        *     Request timed out.
 4  2626 ms    23 ms    27 ms  ae0-102.ptn-gw02.plus.net [212.159.1.105]
 5    27 ms    25 ms    23 ms  vl55.ptn-lb01.plus.net [212.159.2.124]
 6    25 ms    24 ms    22 ms  ptn-cdns01.plus.net [212.159.6.9]
Trace complete.
C:\>tracert 212.159.6.10
Tracing route to ptn-cdns02.plus.net [212.159.6.10]
over a maximum of 30 hops:
 1    <1 ms    <1 ms    <1 ms  my.router [192.168.0.1]
 2    27 ms    37 ms    27 ms  lo0-plusnet.pte-ag1.plus.net [195.166.128.64]
 3    26 ms    25 ms    32 ms  ge0-0-0-403.pte-gw1.plus.net [84.92.4.1]
 4    30 ms    28 ms    28 ms  212.159.0.185
 5    22 ms    24 ms    24 ms  vl63.pcl-lb01.plus.net [212.159.2.252]
 6    24 ms    88 ms    24 ms  ptn-cdns02.plus.net [212.159.6.10]
Trace complete.
C:\>nslookup news.bbc.co.uk 212.159.6.9
Server:  ptn-cdns01.plus.net
Address:  212.159.6.9
Non-authoritative answer:
Name:    newswww.bbc.net.uk
Address:  212.58.226.77
Aliases:  news.bbc.co.uk

C:\>nslookup news.bbc.co.uk 212.159.6.10
Server:  ptn-cdns02.plus.net
Address:  212.159.6.10
Non-authoritative answer:
Name:    newswww.bbc.net.uk
Address:  212.58.226.77
Aliases:  news.bbc.co.uk
C:\>nslookup plus.net 212.159.6.9
Server:  ptn-cdns01.plus.net
Address:  212.159.6.9
Non-authoritative answer:
Name:    plus.net
Addresses:  212.159.9.2, 212.159.8.2

C:\>nslookup plus.net 212.159.6.10
Server:  ptn-cdns02.plus.net
Address:  212.159.6.10
Non-authoritative answer:
Name:    plus.net
Addresses:  212.159.9.2, 212.159.8.2

[#7]

Big problems
Tracing route to pth-cdns01.plus.net [212.159.13.49]
over a maximum of 30 hops:
  1    *        *        *    Request timed out.
  2    *        *        *    Request timed out.
  3    *        *        *    Request timed out.
  4    *        *        *    Request timed out.
  5    *        *        *    Request timed out.
  6    38 ms    37 ms    38 ms  pth-cdns01.plus.net [212.159.13.49]
Trace complete.
C:\Documents and Settings\Rob>tracert 212.159.13.50
Tracing route to pth-cdns02.plus.net [212.159.13.50]
over a maximum of 30 hops:
  1    *        *        *    Request timed out.
  2    *        *        *    Request timed out.
  3    *        *        *    Request timed out.
  4    *        *        *    Request timed out.
  5    *        *        *    Request timed out.
  6    30 ms    30 ms    29 ms  pth-cdns02.plus.net [212.159.13.50]
Trace complete.
C:\Documents and Settings\Rob>nslookup bbc.co.uk 212.159.13.49
Server:  pth-cdns01.plus.net
Address:  212.159.13.49
Non-authoritative answer:
Name:    bbc.co.uk
Address:  212.58.254.252

C:\Documents and Settings\Rob>nslookup bbc.co.uk 212.159.13.50
Server:  pth-cdns02.plus.net
Address:  212.159.13.50
Non-authoritative answer:
Name:    bbc.co.uk
Address:  212.58.254.252

[#8]

Terrible connectivity problems this morning. Most websites don't load. Occasionally they do (otherwise I couldn't type this), but just as often, not. One minute google.com loads, for example, the next, it doesn't. It doesn't matter which browser I use, or which computer in the house.
IRC and Skype works fine, but WWW and Mail is badly affected.
My DNS servers (according to my router) are 212.159.6.9 and 212.159.6.10
Here are my traceroutes and NSlookups:

Quote

C:\Documents and Settings\Francois Jordaan>tracert 212.159.6.9 Tracing route to ptn-cdns01.plus.net [212.159.6.9] over a maximum of 30 hops:   1    2 ms    2 ms    2 ms  www.routerlogin.com [192.168.0.1]   2    12 ms    11 ms    13 ms  lo0-plusnet.pcl-ag01.plus.net [195.166.128.27   3    12 ms    11 ms    12 ms  gi1-2-803.pcl-gw1.plus.net [84.92.5.57]   4    12 ms    11 ms    12 ms  vl63.pcl-lb01.plus.net [212.159.2.252]   5    13 ms    13 ms    16 ms  ptn-cdns01.plus.net [212.159.6.9] Trace complete. C:\Documents and Settings\Francois Jordaan>tracert 212.159.6.10 Tracing route to ptn-cdns02.plus.net [212.159.6.10] over a maximum of 30 hops:   1    2 ms    1 ms    2 ms  www.routerlogin.com [192.168.0.1]   2    12 ms    12 ms    11 ms  lo0-plusnet.pcl-ag01.plus.net [195.166.128.27   3    11 ms    12 ms    11 ms  gi1-2-803.pcl-gw1.plus.net [84.92.5.57]   4  284 ms    12 ms    11 ms  vl63.pcl-lb01.plus.net [212.159.2.252]   5    12 ms    11 ms    13 ms  ptn-cdns02.plus.net [212.159.6.10] Trace complete.

Quote

C:\Documents and Settings\Francois Jordaan>nslookup bbc.co.uk 212.159.6.9 DNS request timed out.     timeout was 2 seconds. *** Can't find server name for address 212.159.6.9: Timed out Server:  UnKnown Address:  212.159.6.9 DNS request timed out.     timeout was 2 seconds. DNS request timed out.     timeout was 2 seconds. *** Request to UnKnown timed-out C:\Documents and Settings\Francois Jordaan>nslookup bbc.co.uk 212.159.6.10 DNS request timed out.     timeout was 2 seconds. *** Can't find server name for address 212.159.6.10: Timed out Server:  UnKnown Address:  212.159.6.10 DNS request timed out.     timeout was 2 seconds. DNS request timed out.     timeout was 2 seconds. *** Request to UnKnown timed-out

Please advise whether the problem is at my end, or Plus.net's.
Thanks

[#9]

Sorry about this guys. We're in the process of making some changes to our traffic management switches and they're under really high load at the moment
That puts more weight behind the inclination that it's the Ellacoyas that have been causing the intermittent problems.
I'll get a Service Status out however we're hoping this will will die down before long. We're going to reload all of the switches tomorrow morning which will hopefully provide a permanent resolution to these issues.
If you're having difficulties then continue to post here. It would be helpful to know what gateway you're on...

[#10]

Hi Bob,
I some times have a slow response that results in a time out and a page not being loaded. This happened this morning when trying to log into MSN Messenger and also when trying to get on to the BBC web site. Two failures for MSN and four before I was able to get to the BBC.
I followed your earlier post and checked my DNS servers, then did a trace route and then a nslookup, please see below  for results.
Hope this helps,
Rob
**********************************
**********  Trace Route **********
**********************************
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
C:\Documents and Settings\Super User>tracert 212.159.6.9
Tracing route to ptn-cdns01.plus.net [212.159.6.9]
over a maximum of 30 hops:
  1    <1 ms    <1 ms    <1 ms  192.168.0.1
  2    35 ms    37 ms    42 ms  lo0-plusnet.pcl-ag02.plus.net [195.166.128.39]
  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    *    1531 ms    41 ms  ptn-cdns01.plus.net [212.159.6.9]
Trace complete.
C:\Documents and Settings\Super User>tracert 212.159.6.10
Tracing route to ptn-cdns02.plus.net [212.159.6.10]
over a maximum of 30 hops:
  1    <1 ms    <1 ms    <1 ms  192.168.0.1
  2    35 ms    36 ms    53 ms  lo0-plusnet.pcl-ag02.plus.net [195.166.128.39]
  3  100 ms  211 ms  204 ms  gi1-2-904.pcl-gw02.plus.net [84.92.0.141]
  4    41 ms    37 ms    37 ms  vl63.pcl-lb01.plus.net [212.159.2.252]
  5    40 ms    43 ms    38 ms  ptn-cdns02.plus.net [212.159.6.10]
Trace complete.
C:\Documents and Settings\Super User>

******************************
********** nslookup **********
******************************
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
C:\Documents and Settings\Super User>nslookup bbc.co.uk 212.159.6.9
Server:  ptn-cdns01.plus.net
Address:  212.159.6.9
Non-authoritative answer:
Name:    bbc.co.uk
Address:  212.58.254.252

C:\Documents and Settings\Super User>nslookup bbc.co.uk 212.159.6.10
Server:  ptn-cdns02.plus.net
Address:  212.159.6.10
Non-authoritative answer:
Name:    bbc.co.uk
Address:  212.58.254.252

C:\Documents and Settings\Super User>

[#11]

I hadn't experienced this problem before, but I  had similar problems to the other posts for about half an hour from about 9am until 9:25am today (30th April). Email was OK, I could get to this site, but trying to reach most other websites was either very slow or timed out. Also I could not download my website log files using ftp.
I went to network diagnostics for XP but it did not detect any problems.
Fortunately this problem seemed to resolve itself quite quickly. Hopefully it won't recur.

[#12]

Quote from: Bob

Sorry about this guys. We're in the process of making some changes to our traffic management switches and they're under really high load at the moment That puts more weight behind the inclination that it's the Ellacoyas that have been causing the intermittent problems. I'll get a Service Status out however we're hoping this will will die down before long. We're going to reload all of the switches tomorrow morning which will hopefully provide a permanent resolution to these issues. If you're having difficulties then continue to post here. It would be helpful to know what gateway you're on...

Morning all,
We have decided that an immediate staggered reload of the switches is the best course of action, we are currently going through the change management process and should commence the reloads in the next half hour or so.
Regards
Russ
Network Operations

[#13]

is thn-ag2  inclueded in this?.
just wondering as i have latency issues on the trial at the mo and were trying out somthing new today and if latency improves it might be the switches or the somthing new that might solve the latency
http://community.plus.net/forum/index.php/topic,75951.32.html

[#14]

Quote from: ASBO

is thn-ag2  inclueded in this?.

The switches we are reloading are invisible to users - so it wont come up in a traceroute. thn-ag2 (aggregator) is where your adsl session terminates.
if that is congested then you may see latency but ive had a look at it and it appears to be fine!

[#15]

seems to be 'normal' again now for me.....
ftp uploads to plusnet webspace are whizzing through...