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netlive
join:2008-05-14
 ·CenturyLink
| reply to GeekJedi
Re: Update?
I just have to follow up again on the static IP issue because it's really becoming a pet peeve of mine.
A static IP is *not* defined as an IP that doesn't change. It's defined by the way the IP is assigned - ie, statically. If a DHCP server is assigning the IP then by definition the IP is *not* static. It makes no difference at all if you receive the same IP from the DHCP server or not, it's still being dynamically assigned.
Static IPs can be delegated to independent name servers for reverse DNS resolution, which is critically important for real business class use. Sticky IPs cannot be delegated which makes them no better than using third party dynamic DNS resolvers with a non-sticky IP.
Static IPs are also assigned - statically - at the node consuming the IP. That guarantees that the node will maintain that same IP if the connection is ever lost or reset. Nodes that request their IPs from a DHCP server are *not* guaranteed of receiving the same IP address if there is more than one IP in the sticky set.
This isn't directed at anyone in particular, but anyone that thinks that "static IP" simply means an IP that doesn't change then please stop talking about it. That's *not* what static means, and by propagating this misinformation it only serves to make it harder for the people who need real static IPs to get what they really need. | |
myriad
join:2008-07-27
West Monroe, LA
| I just found this entry and wanted to clarify some things. Using your description, CenturyTel is using static IP addresses. When a static user connects, their IP address information is associated with their account; it only tries to perform allocation from a dynamic pool if the account is set up as a 'dynamic' account. Because the connection is a Point-to-Point connection, the first IP address in the range is given to the router and the other IP addresses are then routed to the first ip address since this is the gateway. By statically assigning IP information on the servers a user sets up, something which is good practice in server administration, you never have the issue of servers 'battling' for the ip resources.
Also, you should be able to contact the support team for your ISP if the reverse DNS records are incorrect and ask them to fix them for you. | |
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