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302 posts

Ultimate Geek


Topic # 101004 22-Apr-2012 20:28 Send private message

For months we've experienced webpages hanging on load, taking up to a few minutes to resolve and images on various website simply not loading. I'm fairly certain it isn't just me. I frequently need to use OpenDNS just to load some things, but of course this gets stuffed by TCL's proxy or whatever.



Sites include:
  • Pinterest
  • Tumblr
  • Various international news websites
  • Google Plus
  • A lot of others (mostly international I think)
Environment: OS X 10.7.3, Safari, Chrome.

We've got the recommended DNS server addresses active. While some of the above addresses seem fairly petty, when you're doing research it's incredibly frustrating when things are not loading as they should. Would love some clarity from TelstraClear on this.






– J

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  Reply # 613322 22-Apr-2012 20:37 Send private message

What DNS servers are you using?




302 posts

Ultimate Geek


  Reply # 613324 22-Apr-2012 20:40 Send private message

sbiddle: What DNS servers are you using?



203.97.78.43
203.97.78.44




– J

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  Reply # 613366 22-Apr-2012 21:35 Send private message

I certainly haven't experienced any issues, or heard of any for months now.

There have been one ot two people recently post on here who had problems, and from memory in both cases they had routers configured to these new DNS settings, but were using other static DNS settings in their PC's.



302 posts

Ultimate Geek


  Reply # 613369 22-Apr-2012 21:40 Send private message

sbiddle: I certainly haven't experienced any issues, or heard of any for months now.

There have been one ot two people recently post on here who had problems, and from memory in both cases they had routers configured to these new DNS settings, but were using other static DNS settings in their PC's.


I'm aware of it happening to a few people I know. Someone on twitter responded earlier with the same issues. At the end of the day, something isn't working as it should.




– J

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  Reply # 613386 22-Apr-2012 21:54 Send private message

jermsie:
sbiddle: I certainly haven't experienced any issues, or heard of any for months now.

There have been one ot two people recently post on here who had problems, and from memory in both cases they had routers configured to these new DNS settings, but were using other static DNS settings in their PC's.


I'm aware of it happening to a few people I know. Someone on twitter responded earlier with the same issues. At the end of the day, something isn't working as it should.


What's interesting though is that when issues strike you'll normally see plenty of people posting on here, as is the case when their DNS servers or transparant proxy die.

The fact it's only you, and somebody else on twitter tends to indicate an isolated issue, which for all intent purposes could be something with your setups, rather than an ISP wide issue.

Is your MTU configured correctly?


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Master Geek
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  Reply # 613403 22-Apr-2012 22:29 Send private message

sbiddle:
Is your MTU configured correctly?



Hey, just out of curiousity what is the best MTU value? My router MTU is set to 1500 on TCL Cable.



302 posts

Ultimate Geek


  Reply # 613404 22-Apr-2012 22:35 Send private message

sbiddle:
jermsie:
sbiddle: I certainly haven't experienced any issues, or heard of any for months now.

There have been one ot two people recently post on here who had problems, and from memory in both cases they had routers configured to these new DNS settings, but were using other static DNS settings in their PC's.


I'm aware of it happening to a few people I know. Someone on twitter responded earlier with the same issues. At the end of the day, something isn't working as it should.


What's interesting though is that when issues strike you'll normally see plenty of people posting on here, as is the case when their DNS servers or transparant proxy die.

The fact it's only you, and somebody else on twitter tends to indicate an isolated issue, which for all intent purposes could be something with your setups, rather than an ISP wide issue.

Is your MTU configured correctly?



Ah, how do I check that? Do I need to plug directly into the surfboard?




– J

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  Reply # 613418 22-Apr-2012 23:15 Send private message

Im on cable as well and use the paradise dns, never bothered to see how different either server was, Try using the Secondary dns server as your first, see if that changes things. i notice with a couple of sites that wont load till after 10am in the morning which is just a pain



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Ultimate Geek


  Reply # 613419 22-Apr-2012 23:16 Send private message

phantomdb: Im on cable as well and use the paradise dns, never bothered to see how different either server was, Try using the Secondary dns server as your first, see if that changes things. i notice with a couple of sites that wont load till after 10am in the morning which is just a pain


Whats the IP for that?




– J

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  Reply # 613420 22-Apr-2012 23:21 Send private message

so out of interest do telstra offer opt-out proxy??

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  Reply # 613421 22-Apr-2012 23:26 Send private message

Doing a bit of ping testing, the largest payload I can get from Wellington to www.parc.com in Palo Alto is 1472 bytes (with Don't Fragment set). 
Then figure 8 bytes of ICMP header, 20 of IP Header, giving you a figure of 1500 bytes.
Wiresharking the ping test, actual frame length on the wire is 1514 bytes.

Interestingly, if you set the DF bit via ping (-f) and try too large a payload, Ping tells you about it but doesn't actually put anything on the wire.  I guess doing the maths before you yap on the network is a good thing.




"Customers don’t expect you to be perfect. They do expect you to fix things when they go wrong." Donald Porter – British Airways

The views expressed here are my own and are not reflective of other organisms or organisations.

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  Reply # 613607 23-Apr-2012 12:20 Send private message

phantomdb: so out of interest do telstra offer opt-out proxy??


I wish.

I've noticed increased dropped connections over HTTP in the last week or so, usually visible in either nothing loading (or the connection closed error in your favourite browser), or css not loading.  Not on any specific sites.  

My assumption is that it's the infernal transparent proxy.





---
James Sleeman

My hobby - listing small amounts of interesting/useful hobby electronic components hardware and stuff on Trademe for cheap, all good geek stuff for the "maker" revolution ;-)

Tip for Trademe addicts: install an addon for your browser to get thumbs for all listings.

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Ultimate Geek
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  Reply # 613630 23-Apr-2012 13:09 Send private message

I'm also encountering the odd intermittent error with zero length replies, which I assume is related to the proxy as it happens on a variety of different sites over a variety of different times....

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  Reply # 613632 23-Apr-2012 13:10 Send private message

sleemanj:
phantomdb: so out of interest do telstra offer opt-out proxy??


I wish.



+1..

Where's Gary when you need him

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  Reply # 613633 23-Apr-2012 13:16 Send private message

I've also had the "blank page" (i.e. zero-length) issue quite a bit recently.

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