Re: [Ilugc] [OT] Bsnl Dataone connection is slow now a days
On Sat, 2010-07-31 at 17:57 +0530, Raja Subramanian wrote: > More than the speed advantage, the point of discussion was > that Google/public DNS will confuse CDN, while ISP DNS > would not cause issues. A caching name server will work > best for both speed and CDN. Ah, I see. I should have noticed that. My bad. -- Roshan George ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] [OT] Bsnl Dataone connection is slow now a days
2010/8/1 Balaji Narayanan (பாலாஜி நாராயணன்) : > I tend to disagree here. You are assuming that OpenDNS / Google DNS is > always reliable, correct and secure(???). If you dont trust your ISP > to provide the basic service that he is expected to provide reliably, > there is something wrong. > > For the fact, I have been an Airtel Broadband user for over 5 years > now and I dont remember experiencing any major issues with their DNS. You are a lucky guy. In my experience TATA, Airtel and BSNL all have DNS server uptime issues. I used all of them simultaneously for over 3 years and have had issues. Once I switched to OpenDNS and other public servers, this problem got resolved. The pity is that when we call these ISPs and tell them their DNS is down, the call centre sees stars. In BSNL DSL, one has to contend with their PPP auth server going down often albeit for small periods like 1/2 to 1 hour. It is better to wait it out than go thro' the pain of trying to explain to the call centre guy who assumes we know nothing of networking. This experience is in Bangalore though, not Chennai. -- Mohan Sundaram ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] [OT] Bsnl Dataone connection is slow now a days
On 27 July 2010 23:24, Raja Subramanian wrote: > 2010/7/27 Balaji Narayanan (பாலாஜி நாராயணன்) : >> I am not sure. I run a ubuntu box and it does not have bind installed >> by default. > > I meant the bind config after you "apt-get install bind9". CentOS/etc > make it trivial "yum install caching-nameserver". My point was that it does not install bind by default. Elsewhere in thread I remember reading that ubuntu does it by default. > > >> For the technology wise, yes, but again, I assume that ISPs have >> atleast a caching name server installed closer to you. > > Fully agree on the importance of proximity to end users, and the > limitations of OpenDNS/etc as a consequence. > > But other than proximity, ISP DNS has limited advantages. Main > disadvantages are lack of correctness, reliability and security where > the OpenDNS/etc score high. However, the privacy aspects of > Google DNS is another can of worms. I tend to disagree here. You are assuming that OpenDNS / Google DNS is always reliable, correct and secure(???). If you dont trust your ISP to provide the basic service that he is expected to provide reliably, there is something wrong. For the fact, I have been an Airtel Broadband user for over 5 years now and I dont remember experiencing any major issues with their DNS. Cheerio -b- -- http://balajin.net/blog http://flic.kr/balajijegan ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] [OT] Bsnl Dataone connection is slow now a days
2010/7/27 Thyagarajan தியாகராஜன் > I have BSNL data one net connection, The speed off-late is getting worse, > often skype gets disconnection. > I checked with another friend of mine, he also feels the same. > Do any one (from chennai) experience similar experience. > > we are using bsnl broadband at our office . Speed is satisfactory.. -- Nagaraja T ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] [OT] Bsnl Dataone connection is slow now a days
On Sat, Jul 31, 2010 at 5:08 AM, Roshan George wrote: > I tried this. It was unnoticeable. I saved maybe 40 ms every request > over Google's DNS so it was completely unnoticeable. More than the speed advantage, the point of discussion was that Google/public DNS will confuse CDN, while ISP DNS would not cause issues. A caching name server will work best for both speed and CDN. - Raja ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] [OT] Bsnl Dataone connection is slow now a days
On Tue, 2010-07-27 at 22:26 +0530, Raja Subramanian wrote: > Perhaps the best option is to run bind as a caching name server > for local users. IIRC, the default config of every distro is to run > bind as a pure cache only name server. I tried this. It was unnoticeable. I saved maybe 40 ms every request over Google's DNS so it was completely unnoticeable. Both Google's DNS and a caching name server (on the same LAN) were huge improvements over Airtel's stuff but the difference between the two was usually unnoticeable. With Airtel's DNS I would frequently be looking at time-outs quite frequently and when I wasn't the results were slow. -- Roshan George ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] [OT] Bsnl Dataone connection is slow now a days
2010/7/27 Thyagarajan தியாகராஜன் : > Hi, > > I have BSNL data one net connection, The speed off-late is getting worse, > often skype gets disconnection. > I checked with another friend of mine, he also feels the same. > Do any one (from chennai) experience similar experience. > All replies in this thread are brilliant. I use OpenBSD's inbuilt caching DNS server and simply point the nameserver to 127.0.0.1. If it is Linux I use one of 4.2.2.2 or 8.8.8.8. I could also point to the 192.168.1/24 address of my local OpenBSD box though. I have been a big fan of BSNL and all sarkar stuff for a very long time. And I bank on them for my biz. It has never let me down. Nowadays BSNL experiences DNS problems, that is all. No issues with speed or stability. It is better than my friend's connection in New Jersey. ;) I mean the gear that they use is much better since my friend always got an Internet disconnect when he received a phone call. Whereas the private players don't have the cash to spend on good gear like BSNL. -Girish -- Gayatri Hitech web: http://gayatri-hitech.com SpamCheetah Spam filter: http://spam-cheetah.com ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] [OT] Bsnl Dataone connection is slow now a days
2010/7/27 Balaji Narayanan (பாலாஜி நாராயணன்) : > I am not sure. I run a ubuntu box and it does not have bind installed > by default. I meant the bind config after you "apt-get install bind9". CentOS/etc make it trivial "yum install caching-nameserver". > For the technology wise, yes, but again, I assume that ISPs have > atleast a caching name server installed closer to you. Fully agree on the importance of proximity to end users, and the limitations of OpenDNS/etc as a consequence. But other than proximity, ISP DNS has limited advantages. Main disadvantages are lack of correctness, reliability and security where the OpenDNS/etc score high. However, the privacy aspects of Google DNS is another can of worms. - Raja ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] [OT] Bsnl Dataone connection is slow now a days
2010/7/27 Mohan L > > I also have a BSNL broadband connection. But I don't find any issue with > the > > speed. In fact it is faster now. Only issue I face is with the DNS. I > have > > changed the /etc/resolv.conf entry to point the opendns servers. After > that > > it is normal. I get a download speed of more than 50 KBps. > > How do I find the opendns servers ip? Can you explain little bit more. > > I would normally go to the OpenDNS wikipedia and set the IP address given in that page in /etc/resolv.conf. http://en.wikipedia.org/wiki/Opendns -Sree Pratheep. ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] [OT] Bsnl Dataone connection is slow now a days
On 27 July 2010 22:26, Raja Subramanian wrote: > 2010/7/27 Balaji Narayanan (பாலாஜி நாராயணன்) >> Beware of using Open DNS. Some of the edge caching systems relies on >> routing you to a nearest server based on where the DNS query >> originated from. And if you are using a Open DNS server, you might be >> sent to a cache closer to the DNS server resulting in unwanted >> latency. > > Great point. But note that the problem is not specific to OpenDNS > alone. Any hosted DNS service has exactly the same problem. True, but the assumption is that the ISP has some clue not to use a DNS server half way across the globe. > > Perhaps the best option is to run bind as a caching name server > for local users. IIRC, the default config of every distro is to run > bind as a pure cache only name server. I am not sure. I run a ubuntu box and it does not have bind installed by default. > > However, OpenDNS/GoogleDNS/etc have some neat technology > deployed through UDP Anycast. Good reading for any networking > enthusiast. And in any case, these services are far better than > the DNS infrastructure provided by Indian ISPs. For the technology wise, yes, but again, I assume that ISPs have atleast a caching name server installed closer to you. -balaji -- http://balajin.net/blog http://flic.kr/balajijegan ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] [OT] Bsnl Dataone connection is slow now a days
2010/7/27 Balaji Narayanan (பாலாஜி நாராயணன்) > Beware of using Open DNS. Some of the edge caching systems relies on > routing you to a nearest server based on where the DNS query > originated from. And if you are using a Open DNS server, you might be > sent to a cache closer to the DNS server resulting in unwanted > latency. Great point. But note that the problem is not specific to OpenDNS alone. Any hosted DNS service has exactly the same problem. Perhaps the best option is to run bind as a caching name server for local users. IIRC, the default config of every distro is to run bind as a pure cache only name server. However, OpenDNS/GoogleDNS/etc have some neat technology deployed through UDP Anycast. Good reading for any networking enthusiast. And in any case, these services are far better than the DNS infrastructure provided by Indian ISPs. But since the OP has problems with Skype disconnects, his issue is not with DNS at all. Skype super node IPs are 1) hard coded in the binary, 2) updated on every connect, and 3) cached locally. Skype works perfectly even when DNS is not configured in your box. Perhaps OP should consider checking the physical DSL/telephone cable or the issue could also be due to congestion in the BSNL network. - Raja ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] [OT] Bsnl Dataone connection is slow now a days
On 27 July 2010 20:47, Vannia Rajan wrote: > 2010/7/27 ஸ்ரீ பிரதீப் > >> I also have a BSNL broadband connection. But I don't find any issue with >> the >> speed. In fact it is faster now. Only issue I face is with the DNS. I have >> changed the /etc/resolv.conf entry to point the opendns servers. After that >> it is normal. I get a download speed of more than 50 KBps. >> >> > Changing in /etc/resolv.conf is a temporary fix, i guess. Most routers have > the option to configure the DNS IP's. Doing it there is a permanent > solution. > > Also, I found Open-DNS servers blocking Social-Networking services some > times. So, i would suggest going for Google's Public DNS servers. > > http://code.google.com/speed/public-dns/ > > 8.8.8.8 > 8.8.4.4 Beware of using Open DNS. Some of the edge caching systems relies on routing you to a nearest server based on where the DNS query originated from. And if you are using a Open DNS server, you might be sent to a cache closer to the DNS server resulting in unwanted latency. Here is a fantastic blog post that a friend of mine wrote that explains this with examples: http://blog.sandipb.net/2009/04/23/akamai-awesomeness-and-opendns-lameness/ -balaji -- http://balajin.net/blog http://flic.kr/balajijegan ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] [OT] Bsnl Dataone connection is slow now a days
2010/7/27 ஸ்ரீ பிரதீப் > I also have a BSNL broadband connection. But I don't find any issue with > the > speed. In fact it is faster now. Only issue I face is with the DNS. I have > changed the /etc/resolv.conf entry to point the opendns servers. After that > it is normal. I get a download speed of more than 50 KBps. > > Changing in /etc/resolv.conf is a temporary fix, i guess. Most routers have the option to configure the DNS IP's. Doing it there is a permanent solution. Also, I found Open-DNS servers blocking Social-Networking services some times. So, i would suggest going for Google's Public DNS servers. http://code.google.com/speed/public-dns/ 8.8.8.8 8.8.4.4 -- Thanks, Vanniarajan ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] [OT] Bsnl Dataone connection is slow now a days
On Tue, Jul 27, 2010 at 8:34 PM, Mohan L wrote: > > >How do I find the opendns servers ip? Can you explain little bit more. > http://www.opendns.com/ Please check the bottom of the page for IP addresses. -- Arun S.A.G ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] [OT] Bsnl Dataone connection is slow now a days
> I also have a BSNL broadband connection. But I don't find any issue with the > speed. In fact it is faster now. Only issue I face is with the DNS. I have > changed the /etc/resolv.conf entry to point the opendns servers. After that > it is normal. I get a download speed of more than 50 KBps. How do I find the opendns servers ip? Can you explain little bit more. Thanks & Rg Mohan L ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] [OT] Bsnl Dataone connection is slow now a days
27 ஜூலை, 2010 6:40 pm அன்று, Thyagarajan தியாகராஜன் எழுதியது: > Hi, > > I have BSNL data one net connection, The speed off-late is getting worse, > often skype gets disconnection. > I checked with another friend of mine, he also feels the same. > Do any one (from chennai) experience similar experience. > I also have a BSNL broadband connection. But I don't find any issue with the speed. In fact it is faster now. Only issue I face is with the DNS. I have changed the /etc/resolv.conf entry to point the opendns servers. After that it is normal. I get a download speed of more than 50 KBps. -Sree Pratheep. ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] [OT] Bsnl Dataone connection is slow now a days
On 27-07-2010 18:40, Thyagarajan தியாகராஜன் wrote: Hi, I have BSNL data one net connection, The speed off-late is getting worse, often skype gets disconnection. I checked with another friend of mine, he also feels the same. Do any one (from chennai) experience similar experience. thanks, Thyagarajan Shanmugham ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc Yes sir Speed is dead slow - particularly during the first half of the day upto about 3 PM - after that its a little moderate Vatsala ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
Re: [Ilugc] [OT] Bsnl Dataone connection is slow now a days
Hi, > > I have BSNL data one net connection, The speed off-late is getting worse, > often skype gets disconnection. > I checked with another friend of mine, he also feels the same. > Do any one (from chennai) experience similar experience. Is dataone the broadband connection? I face a similar issue. But mine is more of a dns resolution issue. Once it gets it, it seems fine. But sometimes it just about never gets it right :( Abishek ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
[Ilugc] [OT] Bsnl Dataone connection is slow now a days
Hi, I have BSNL data one net connection, The speed off-late is getting worse, often skype gets disconnection. I checked with another friend of mine, he also feels the same. Do any one (from chennai) experience similar experience. thanks, Thyagarajan Shanmugham ___ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
