Revelations 514
Royal Uhlans
Amarr Empire
49
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Posted - 2013.06.06 21:12:00 -
[1] - Quote
Very quick explanation of your DNS requests...simplified:
You have an internal IP address associated to your devices, (PS3, Personal PC, ect), this is issued by your router or modem. This is not routed over the internet, just inside your network. These addresses are reused and reserved for use for internal networks. This is because you would quickly run out of IP addresses otherwise.
Your router/modem issuing the internal IP addresses is called your gateway (usually), and has two interfaces associated to it. One that talks to your internal IP's, the other interface has an external IP, (usually DHCP), that is actually assigned by your ISP and changes from time to time (if DHCP).
The router/modem handles traffic between the two as a medium.
So, what does this have to do with DNS?
You have internal DNS, done by your router/modem
You have external DNS, issued by your ISP and changes frequently.
You have a third layer of DNS that is affected when you change your preferred DNS server, this is what server you send DNS request to when you request something such as a website. By default, this is usually the same server that issues your external IP. When you change this, you essentially tell your PC, (in this case PS3), to send the request out of your router to the preferred DNS server for resolution, which the server does and sends back to you.
No matter what, you will still be using your Internal, and to some extent your ISP's network during the process.
Network latency is subject to the last mile rule, basically, you can have the fastest internet ever but if your internal or ISP network is slower, you will only be able to go that speed.
Now you have some background info. I provide this because teaching someone how to use nslookup/ipconfig/telnet/ping to troubleshoot would take forever and I am not gonna do it.
When you send a request out for resolution, by default it will go to your ISP's DNS servers, who will then most likely transfer that request to a public DNS server, or send the query to the server of authority for the requested domain. That is why changing the preferred DNS server works for some if your ISP is having problems querying or forwarding the DNS request. This is not typically the issue however.
This issue can be occurring on all of your devices but you do not notice. This is because TCP/IP will resend packets for quite a while if they fail the first time which is what is used when browsing the web. Gaming on the other hand uses UDP, meaning packets that are lost are just lost. So you may notice the issue on the PS3 but could be happening to all of your devices unnoticed.
Some suggestions:
First try unplugging your router or modem from the power source for 2 mins. Plug back in and wait 2mins. Does the issue go away after this? If not then....
ensure no filter is placed on your router/modem. This is a little plastic piece attached to your cable between the modem and the wall jack. Remove it if you have one. Still doesn't work? then....
Unplug your cable or sat TV boxes. I know it sounds weird but try it. Do you continue to have issues? If so.....
Call your router manufacturer, (if its under warrenty), or your ISP. Check your NAT type is correct or if they see any issues on the access point from their end. Also request help with port forwarding your router for PS3 usage.
If they will not help you then google it, you will easily find the forwarding required for PS3, and probably directions on how to do this in your specific model of router/modem.
You want your NAT type on your router to be the same that the ISP requires. You also want an Open NAT, which can be accomplished by port forwarding. |