>>37097059Depends on the network to which youre refering.
your home systems are usually in the 192.168.0.0 or 192.168.1.0 networks. These are defined as Class C private networks (ie, can't be internet routed....well, the can...technically, but they're usually filtered in router software) same for the 10.0.0.0 Class A and 172.16.0.0 Class B private address. Not internet routable.
As such, your INTERNAL netowrk (technically an intranet) will have a DHCP server to easy administration of internal hosts, not need for static IPs (manually assigned IPs that require you keeping track of what host has what IP to avoid conflicts, the requiring human intervention to configure each host)
Externally, your ISP can use a DHCP server to assign and IP to your modem. The routers responsibiliy is in translating each stream of data into and out of your internal network to an external host.
Sometimes you may hear of a "Sticky static" IP. Having worked for AT&T internet services for a little while (went through tier 2 training after havign completed the Cisco networking academy and AT&Ts training course was a fucking joke), nearest I can fiigure, the term "Sticky static" is basically a laymans term for an dynamically assigned IP where the lease has yet to expire (each DHCP scope has a preset lease length ie 2 days. Once that lease is half expired, the host will request a new IP, then again at 75% expired if the first request isn't fulfilled"
