How exactly to DNS & DHCP servers work~?plz help me understand

bruceleejr · 10-15-2009, 10:24 PM

Im making a model on how my internet works so it'll give me a better understanding of how others work

Okay so here is what I got ... hopefully it is correct

so when i type ipconfig/all & arp -a

i get this MAC address w/ IP address
68.2.45.1>00:1b:d5:fe:e8:da

and i looked up the mac address here

its related to Cisco so Im thinking its my ISP ( Cox ) Router~????

I thought 68.2.45.1 was my modem & gateway since my IP address is 68.2.45.7 .... but then i looked up the MAC address for 68.2.45.1 and its a Cisco device , and i dont have a router or any cisco stuff so it must be related to my ISP

is my modems ip 192.168.100.1~???? i thought it would be 68.2.45.1 but when i go to 192.168.100.1 m it takes me my modems config site

SO im confused on how this all works~!!

techbytes · 10-16-2009, 10:39 AM

Do you have Cisco vpn client running on your desktop?

bruceleejr · 10-16-2009, 06:11 PM

nope not at all , i have nothing cisco configured , i am hard wired directly to my surfboard modem , im thinkin its my ISP's router~~ correcT~?

**johnwill** · 10-16-2009, 06:23 PM

http://www.howstuffworks.com/home-network.htm

bruceleejr · 10-16-2009, 08:18 PM

Thats a pretty informed link , but it didnt talk about DNS or DHCP

So when i did arp -a
i get this MAC address w/ IP address
68.2.45.1>00:1b:d5:fe:e8:da

Its related to Cisco

does that mean that it is my ISP's router~?

10-15-2009, 10:24 PM	#1 (permalink)
bruceleejr Registered User Join Date: Jan 2009 Posts: 96 OS: winxp sp2	How exactly to DNS & DHCP servers work~?plz help me understand Im making a model on how my internet works so it'll give me a better understanding of how others work Okay so here is what I got ... hopefully it is correct so when i type ipconfig/all & arp -a i get this MAC address w/ IP address 68.2.45.1>00:1b:d5:fe:e8:da and i looked up the mac address here its related to Cisco so Im thinking its my ISP ( Cox ) Router~???? I thought 68.2.45.1 was my modem & gateway since my IP address is 68.2.45.7 .... but then i looked up the MAC address for 68.2.45.1 and its a Cisco device , and i dont have a router or any cisco stuff so it must be related to my ISP is my modems ip 192.168.100.1~???? i thought it would be 68.2.45.1 but when i go to 192.168.100.1 m it takes me my modems config site SO im confused on how this all works~!!

10-16-2009, 10:39 AM	#2 (permalink)
techbytes Registered User Join Date: Oct 2009 Posts: 112 OS: Vista	Re: How exactly to DNS & DHCP servers work~?plz help me understand Do you have Cisco vpn client running on your desktop? __________________ Techbytes.info

10-16-2009, 06:11 PM	#3 (permalink)
bruceleejr Registered User Join Date: Jan 2009 Posts: 96 OS: winxp sp2	Re: How exactly to DNS & DHCP servers work~?plz help me understand nope not at all , i have nothing cisco configured , i am hard wired directly to my surfboard modem , im thinkin its my ISP's router~~ correcT~?

10-16-2009, 06:23 PM	#4 (permalink)
johnwill Manager, Networking Forums Join Date: Sep 2002 Location: S.E. Pennsylvania, US Posts: 41,940 OS: Windows 7, XP-Pro, Vista, Linux Blog Entries: 1	Re: How exactly to DNS & DHCP servers work~?plz help me understand http://www.howstuffworks.com/home-network.htm __________________ If TSF has helped you, Tell us about it! or Donate to help keep the site up! Microsoft MVP - Windows Desktop Experience

10-16-2009, 08:18 PM	#5 (permalink)
bruceleejr Registered User Join Date: Jan 2009 Posts: 96 OS: winxp sp2	Re: How exactly to DNS & DHCP servers work~?plz help me understand Thats a pretty informed link , but it didnt talk about DNS or DHCP So when i did arp -a i get this MAC address w/ IP address 68.2.45.1>00:1b:d5:fe:e8:da Its related to Cisco does that mean that it is my ISP's router~?