Telstra Internet outage points to DNS failure
- 04 September, 2009 05:38
- Comments 27
This week's fault that knocked out Internet access for thousands of Telstra BigPond customers was most likely related to the ISPs domain name system (DNS), according to people affected by the outage.
Internet access was not available to BigPond customers for about one hour between 7 and 8am yesterday.
One BigPond subscriber, who requested anonymity, told Computerworld Internet access was suddenly disrupted when local and international Web portals like Google and Yahoo! could not be reached.
“Everything was working fine, including my modem, PPP connection and ADSL link when I could not access international Web sites,” he said.
“Some local sites were still accessible, but I was already logged on so my browser wasn't doing a DNS lookup.”
Members of the local network operator's group, AusNOG, reported a loss in Next G mobile data services in Brisbane and Melbourne, also at the time of the ADSL outage.
Others complained of no fixed-line access, even to data centres.
Broadband forum Whirlpool has received scores of complaints from Telstra BigPond subscribers who could not access local or international Web sites.
Telstra has since confirmed the outage was related to DNS services "because of an issue with our international gateway”.
The gateway could not find the domain names of Web sites, so people could not access the Internet if it was an international site or one with international content, according to the company.
The outage follows a recent number of high-profile service interruptions at Sydney data centres.
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Comments
Adam Baxter
the DNS outage was a result of the gateway problem... i could not traceroute outside of Australia.. using IP Addresses and not DNS names.
Anonymous
This never happens with other ISPs. Bigpond always have issues, and people are too clueless about it so they pay the big bucks for crap service. Shop around people! TPG and Internode are cheaper and better alternatives.
Anonymous
never happens with other ISPs? Just ask iPrimus people, and others dependant on their data centres. Bag Telstra but do it properly.
Anonymous
This is plainly rubbish. On
On the same day Telstra was down, I received a text message from iSage to say that their service was affected by a cut land line. It is just plain unrealistic to believe that there will never be any breaks in the service of any operation let alone one as sophisticated as modern communications technology.
I am not a great fan of Telstra and would take some considerable effort to get me to change to their service. Like other big players, they prey on those with limited internet knowledge and skills and charge exorbitant amounts for services to people who are just looking for a "safe" deal.
But to be fair, what happened to Telstra could and will happen to all ISPs and the further up the hill you are the greater will be the impact on those downstream.
Anonymous
It was a routing issue, not a DNS issue. The DNS problem was only a symptom of the international routing problems.
Anonymous
A drop out for 1 hour...first time in 2 years. My friends with TPG have drops every day...worth the extra money.
Anonymous
Seems a little fishy to me, DNS, international gateways, yeah right, why would their international gateways be performing DNS lookups? bad implementation of Govt. Filtering Trial anyone?
Anonymous
A core router was down. Traceroutes using IP addresses on failed. DNS would appeared to have failed as a result. Interstingly Telstra's own VoIP was down. I rang the Telstra Business Broadband HelpDesk and when the IVR message said "transferring you to a consultant" All I got after that was white noise. Where were the redundant paths?? Totally un-acceptable why did all the system failsafes fail to provide continuity?
James
I don't even use Bigpond's DNS servers, and I still had a problem with my Bigpond ADSL service. I couldn't even ping the IP addresses of my overseas DNS servers, so this was more than just a DNS issue.
Anonymous
What do you expect from Tel$tra, they dont want to spend any more $ then they absolutely have to, hence why redundancy is a non event.
Anonymous
Guys, you are all correct............ping fails....this is lower layer 3 ICMP packet so DNS is out of the question..........
Connecting with IP fail..........TPC layer 4/3 does not need DNS to resolve the public IP the guy knows well.
DNS on the Gateway.................
GO BACK TO BERKELY UNIVERSITY TO LEARN TCP/IP.....
TPG.............DRINK 100 gallons of POISON before touching them!!!!!! BE WARNED and good luck to you.
THERE IS NO REDUNDANCY ANYWHERE IN BIGPOND......many years ago I was told it would cost too much money...................
I cannot tell who but.........
Anonymous
> A drop out for 1 hour...first time in 2 years.
> My friends with TPG have drops every day...worth > the extra money.
Sorry, I have no drops since I am at TPG (last December on the 50GB plan)
Anonymous
It wasn't just Telstra retail customers that were affected.
I am with ISPOne via another ISP and we had no PPP ALL DAY to 5:00pm.
It staggers me that we are encouraged to do all our business and banking on a network that has no redundancy whatsoever.
Anonymous
I have been with TPG for about 8 years now, and use my link for business purpose. I have had exactly 1 outage (approx 4 hrs) in those 8 years caused by TPG. I had several outages (at least 10 in the last 3 years) due to Telstra doing work in the neighborhood.
Anonymous
PPP and DNS are two totally different issues altogether, don't be fobbed off with Telstra issue as being your problem.
Anonymous
if the gateway router is down where is your DNS request going to be routed to? if the gateway router is down, where is your traceroute or ICMP echo request going to be routed to?
answer is: nowhere.
the gateway router was down. end of mystery.
hardware fails, software fails, stuff fails. current existance 101.
Anonymous
Used to be with Toolstra with regular problems, churned to TPG some time ago and have never had an outage..........when it comes down to the nitty gritty Toolstra is only in it for the $$$ to buggery with everything else so long as they have the monopoly game won
Anonymous
Who cares, it's over, get over it.
Anonymous
If it was merely a DNS server fault, you could switch to another DNS service, such as OpenDNS. Reasons like this (poor reliability of ISP DNS servers) is why I prefer using alternative DNS servers.
Anonymous
TCP/IP and routing are really cool things. They can detect bad paths in the internet and route around them so that when hardware fails i.e. your international gateway 1, international gateway 2 takes over. The idea of a solid network like those deliveried by serious business providers have redunancy so this should never be an issue. I love it how Telstra can get away with lies (just like the people at the Primus data center in melbourne) and everyone thinks it is ok. Short of all fibres and satelites links in Australia being cut, an ISP as big as Telstra should not go offline across the nation at the same time. The fact it did shows how badly designed there networks are. Maybe it too was made in India like there shit billing system.
Anonymous
International internet down again @ 3am Sunday morn.
Can't ping anything overseas, so DNS is not the issue, nslookup's return the correct ip's for overseas sites. This internet is bigger than just a DNS issue.
Anonymous
I & another Australian I have communicated with, have been unable to access an important site in the U.S. today.
Others have been able to access it, "Down for everyone or just me?" said the site was up, & others I spoke to on two different forums could all access the site except for one person in China.
We could not access the site either by web browser or via the internet, error as follows:
"ERROR
The requested URL could not be retrieved
While trying to retrieve the URL: http://aur.archlinux.org/
The following error was encountered:
* Connection to 208.92.232.29 Failed
The system returned:
(113) No route to host
The remote host or network may be down. Please try the request again."
The problem after quite some hours has gone away?
Is it possible that the problem has been caused by Telstra stuffing about with the gizzards of our intraweb?
Anonymous
1 hour...ooohhhh.no internet.....get a life....TPG can't provide similar service unless u live in major city...and are too slow....iiNet failed to fix problems and lost my account after 8 years.
Anonymous
Someone dug up and inadvertently cut one of the international links for Telstra, once this was determined, traffic was re-routed through the other link, causing high congestion. It was not DNS related.
Anonymous
Love the comment shop around..... cant i get satellite internet or telstra wireless internet and both are total . . . . telstra 80percent of the time is average to good and 20 percent of the time your on the phone trying to get someone to deal with your problem properly.it usually gets sent higher. Its fun being in a place you cant use another internet provider.
Anonymous
We moved up from Melbourne to Brisbane and was charged $100 for transfer fees. But ever since the transfer has been inititated, the service has been crap! I have been on the phone a number of times with Telstra and this is actually the nth time that I will be reporting this problem. I have been using a bigpond issue modem alongside a Dlink wireless router since 2006. We have an ADSL broadband account which has been playing up ever since it was transferred from Melbourne to Brisbane. WE had never had any issues with connections in MElbourne with our Internet. A technician came to the house yesterday and spent half a day trying to fix my Internet connection. After all that she diagnosed that the problem is my modem (a Bigpond isse), because it does not synch with the DSL connection. She advised to purchase a replacement from an OPTUS shop. So upon her advise went to the Good Guys instead and purchased a D-Link modem router $120. During the installation, error message comes up saying that the modem cannot communicate with the ADSL of the network provider.(this is indicated by the flashing LED light of the DSL on the modem - this was the problem with the old modem.) Rang Telstra Bigpond and the agent advised that Telstra Bigpond does not support D-Link modem products. Therefore I had to return the modedm to the good guys and advised them that the modem was not supported by Telstra Bigpond. You could imagine the faces of the customer service people when I said that. The same afternoon we went to Telstra shops upon advise of the agent I spoke with to purchase a Bigpond Telstra modem. The manager of the Telstra shop in Chermside shopping center said that the modems have been recalled by Telstra Bigpond a few months ago. (Talk about being passed on like a tennis ball)he advised to try Wow or JB hi-Fi. So we went to JB Hi-FI to see whether there was a Telstra modem router available and the sales agent said there was none in stock. He was also surprised to find out that as per advise by a Telstra bigpond technical support agent that they do not support Dlink products. He claimed he used to work as a tech support agent in Telstra and never been told that.
Ending that wild goose chase, we went home. I fiddled with the machine again and whalla it was working! However, I said to myself to defer contacting Telstra and wait if it lasts at least a day.
GUESS WHAT? At 5:30pm today 2nd of October, the connection had played up again. DSL light is flashing again. I tried to chat online with a bigpond agent just now and after waiting 7 minutes in queue the request was cancelled for no reason at all.
Now this is a service that we have paid religiously over the past 4 years or more and we demand a better service for it.
Anonymous
if that is so why was Telstra trying to build a $15 Billion network to provide FTTN? The only reason they didn't was ACCC wanted rural and country customers to pay the extra cost to provide them with the service rather than having a standard price accross the whole country. Effectively encouraging the already rampant cherry picking by current providers. Don't say it doesnt happen because you only need to read other posts in this thread to see cases where the only provider is Telstra, despite other providers having access to the network on the same basis as they do in the cities.
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