Computer Help and Support
In reply to the discussion: Can someone explain IP addresses to me? [View all]wandy
(3,539 posts)Usually an attached device can use either DHCP or a static IP address. Remaining a bit wimisical, when a device is powered on it goes.... "ARP"!
http://technet.microsoft.com/en-us/library/cc758357(v=ws.10).aspx
Now this is where it "gets complicated". Networks vary by virtue of device capabilities and user setup.
Not being their I'll explain what happens here......
When the PC I'm typing on is powered on it yells......
ARP! Give me an IP address. (Dynamic address)
When my printer powers on it yells....
ARP! This is my IP address. (static address)
My "giver of addresses" a Qwest Q1000 graciously handles both cases.
This is where it gets complicated.....
If Your DVR can do static (pre defined) Ip andresses
If you have defined a static address
If you're "giver of addresses" works reasonably.
Then
All should be fine
Else
Right about here it's best to read the free books. Without having the books in front of me it's hard to be of much more help.
Some "givers of addresses" can assign (by configuration) a specific IP address to a specific MAC address. This is OK fine.
In this case when the DVR yells.
ARP! Give me an IP address. The giver of addresses will say "sure" and it will always be this one.
Sometimes help comes down to a reading assignment.