Which DNS server?
Hey guyz, i have never thought such thing. Lets say, i have a computer which's DNS server set as 8.8.8.8 and 8.8.4.4. However,
it is set as 195.56.34.1 and 195.56.34.2 on the broadband modem.
When i wanna display web page, which one will be used to resolve? and why?
it is set as 195.56.34.1 and 195.56.34.2 on the broadband modem.
When i wanna display web page, which one will be used to resolve? and why?
Monster PC specs(Packard Bell VR46) : Intel Celeron Dual-Core 1.2 GHz CPU , 4096 MB DDR3 RAM, Intel Media Graphics (R) 4 Family with IntelGMA 4500 M HD graphics. 
5 year-old laptop PC specs(Toshiba Satellite A210) : AMD Athlon 64 x2 1.9 GHz CPU, ATI Radeon X1200 128 MB Video Memory graphics card, 3072 MB 667 Mhz DDR2 RAM. (1 stick 2 gigabytes and 1 stick 1 gigabytes)
5 year-old laptop PC specs(Toshiba Satellite A210) : AMD Athlon 64 x2 1.9 GHz CPU, ATI Radeon X1200 128 MB Video Memory graphics card, 3072 MB 667 Mhz DDR2 RAM. (1 stick 2 gigabytes and 1 stick 1 gigabytes)
Comments
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meadIT
Member Posts: 581 ■■■■□□□□□□
It will use 8.8.8.8 and 8.8.4.4 because it knows nothing of the broadband modem's settings.CERTS: VCDX #110 / VCAP-DCA #500 (v5 & 4) / VCAP-DCD #10(v5 & 4) / VCP 5 & 4 / EMCISA / MCSE 2003 / MCTS: Vista / CCNA / CCENT / Security+ / Network+ / Project+ / CIW Database Design Specialist, Professional, Associate -
thedrama
Member Posts: 291 ■□□□□□□□□□
It will use 8.8.8.8 and 8.8.4.4 because it knows nothing of the broadband modem's settings.
Yes, like what you said. Though, whats the difference between them ? What happens if i want to use modem's DNS?Monster PC specs(Packard Bell VR46) : Intel Celeron Dual-Core 1.2 GHz CPU , 4096 MB DDR3 RAM, Intel Media Graphics (R) 4 Family with IntelGMA 4500 M HD graphics.
5 year-old laptop PC specs(Toshiba Satellite A210) : AMD Athlon 64 x2 1.9 GHz CPU, ATI Radeon X1200 128 MB Video Memory graphics card, 3072 MB 667 Mhz DDR2 RAM. (1 stick 2 gigabytes and 1 stick 1 gigabytes) -
phoeneous
Member Posts: 2,333 ■■■■■■■□□□
Yes, like what you said. Though, whats the difference between them ? What happens if i want to use modem's DNS?
What do you mean what's the difference? The 8.8.x.x are Google public dns servers and the 195.56.34.x are the ones that the cable modem learned from the isp via dhcp. -
DevilWAH
Member Posts: 2,997 ■■■■■■■■□□
195.56.34.1 and 195.56.34.2 are DNS servers that belong to the ISP
8.8.8.8 8.8.4.4 belong to Google
if you want to use the modems ones jsut point the PC dns settings to the modems address, which will be some thing like
192.168.0.1
the computer will then send requests to the modem that will in turn forward them to the 195 address.
at the moment the pc communicates directly with 8.8.8.8 and 8.8.4.4
You could also hard code the modem address directly in to the PC in which case it would bypass the modem altogether.- If you can't explain it simply, you don't understand it well enough. Albert Einstein
- An arrow can only be shot by pulling it backward. So when life is dragging you back with difficulties. It means that its going to launch you into something great. So just focus and keep aiming.
Linkin Profile - Blog: http://Devilwah.com -
MAC_Addy
Member Posts: 1,740 ■■■■□□□□□□
If you want to use your modem's DNS then program it on your home router, easy.Yes, like what you said. Though, whats the difference between them ? What happens if i want to use modem's DNS?
Also, the difference between 8.8.x.x are google's and the others are from your ISP provider.
If I were you, I'd stick with the 8.8.x.x domains, since they're always running - i've always had no end of issues when keeping my DNS set on the local ISP.2017 Certification Goals:
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DevilWAH
Member Posts: 2,997 ■■■■■■■■□□
I do agree with the last statement I have always used internet public DNS servers. now I use google 8.8.8.8 8.8.4.4 but have also used open DNS servers a lot in the past.
Although I would suggest you set you modem to use the Google servers, and then point your PC's to you modem. This means if for any reason the google servers fail, or you want to change to a different service, you only have to up date your modem settings.
Also (and for a home nwetwork this is not a real issue) your modem will/may cache address it resolved, meaning that if you have mutiply PC requestion the same name, only one request will be sent to the internet server and the modem will remember the address and resolve further requests from other PC's faster and with out having to send data across the internet. As I say for a home network there is little benefit, but if you have a network with 100/1000's of pc's having a DNS relay server onsite, can show noticeable gains in time taken to resolve addresses and bandwidth usage.- If you can't explain it simply, you don't understand it well enough. Albert Einstein
- An arrow can only be shot by pulling it backward. So when life is dragging you back with difficulties. It means that its going to launch you into something great. So just focus and keep aiming.
Linkin Profile - Blog: http://Devilwah.com -
Forsaken_GA
Member Posts: 4,024
Hey guyz, i have never thought such thing. Lets say, i have a computer which's DNS server set as 8.8.8.8 and 8.8.4.4. However,
it is set as 195.56.34.1 and 195.56.34.2 on the broadband modem.
When i wanna display web page, which one will be used to resolve? and why?
Whatever your local host has configured for DNS servers is where the query will go.
Assuming your providers network doesn't kill it, or doesn't hijack it and redirect to their own DNS servers, then that's also where your query will run. -
RobertKaucher
Member Posts: 4,299 ■■■■■■■■■■
Here is something you guys may find of use: GRC's | DNS Nameserver Performance Benchmark -
WafflesAndRootbeer
Member Posts: 555
I'd be careful about using the Auto/DNS from your ISP provider option as it may put you on a DNS server that is waaaaaaaaaaaaay far away from where you are. My ISP has DNS servers here and that's what I'm supposed to be using. My router, when it automatically queries my ISP for it's DNS server address, hooks me into a DNS server that my ISP runs in the mid-west and it doesn't always work well. I didn't even know it was happening until I closely poked around my router settings and ran the DNS server's IP address it had gotten from my ISP.
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RomBUS
Member Posts: 699 ■■■■□□□□□□
RobertKaucher wrote: »Here is something you guys may find of use: GRC's*|*DNS Nameserver Performance Benchmark**
Hmm interesting tool Robert, thanks for the link!
Might try this out at home -
demonfurbie
Member Posts: 1,819 ■■■■■□□□□□
i just use 8.8.8.8 because if google goes down we are all screwed and riots will commencewgu undergrad: done ... woot!!
WGU MS IT Management: done ... double woot :cheers: -
RobertKaucher
Member Posts: 4,299 ■■■■■■■■■■
Hmm interesting tool Robert, thanks for the link!
Might try this out at home
Keep in mind that for the results to be meaningful you should run multiple tests during the time of day you will actually be using the servers. Certainly time of day has a bearing on average load. -
thedrama
Member Posts: 291 ■□□□□□□□□□
Sorry guyz, i couldn't visit the forum for a while. though, i have checked every posts here
As far as i realise
the priority is on my local interface's DNS server settings according to what you told me, then modem's come. Right?Monster PC specs(Packard Bell VR46) : Intel Celeron Dual-Core 1.2 GHz CPU , 4096 MB DDR3 RAM, Intel Media Graphics (R) 4 Family with IntelGMA 4500 M HD graphics.
5 year-old laptop PC specs(Toshiba Satellite A210) : AMD Athlon 64 x2 1.9 GHz CPU, ATI Radeon X1200 128 MB Video Memory graphics card, 3072 MB 667 Mhz DDR2 RAM. (1 stick 2 gigabytes and 1 stick 1 gigabytes)
