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Forum Discussion
c7000 DHCP functionality questions
How many reserved IPs can be created? Do port forwarding entries have to be reserved IPs? That is, do I have to make an IP reservation before forwarding a port access to that IP? If not, does the I...
Thanks for the info. Yes, static addresses, but not always allocated by the router, given the limits they have.
I got stuck with a Cisco business gateway which refuses to do any port forwarding to an internal IP for which it does not have a static address reservation, and the address must be within the DHCP range, not just on the same subnet. And it has a severe limit on the number of reservations. Port translation is out of the question.
I had not considered OpenWRT, as suggested previously. Many of the devices supported are old and/or discontinued. Makes sense, as creating the support using a volunteer community takes time.
Just keep this in mind. Dynamic is addresses given by a router. IP Reserverations are set ON the router with in the routers DHCP IP address pool. SO devices keep and maintain same IP address all the time. Static IP addresses are manual IP addresses entered on to devices. Not given by the router and reside outside of the DHCP IP address pool on the router. Also keeps same IP address ON devices all the time.
> [...] static addresses, but not always allocated by the router, [...]
If it's "allocated by the router", then it's not "static".
Terminology: A "static" address is configured on the device itself.
What you configure on a (DHCP server on a) router is a reserved dynamic
address, not a static address.
> [...] IP [address] Reserverations are set ON the router [...]True. (Or on some other DHCP server.)
> [...] with in the routers DHCP IP address pool. [...]
Not true around here. As I said, I have 23 address reservations, and
none of them is in my DHCP pool.