Limiting wireless clients using 'Start IP Address'

[videobruce]

I hope I can explain this correctly, sorry if I don't. Some 'assumption' on my part is included.

I assign static IP addresses to the clients, always have done so. Two Desktops, One Laptop, two DVR's one ATA (VoIP adapter) and now one 'Streaming box. All wired except a Laptop.

Not a problem until I assigned one to this Streaming box (Fire TV 2).

I assigned '31' (last segment/octet in the address) to the FTV. It showed correctly in that screen.
When I looked at the LAN page in the Router, it the last IP segment/octet was '54' which is in the allowable 'limit range' I specified, not the static '31' I assigned in the device.

Today, I now see it is showing correctly as '31' with what appears to be the former Router assignment (if that is the correct term) as '54' at the bottom of the page which I assume is a 'history' list.

Can this behavior be due to "lease time"?

When I initially connected the device to the Router, it was in auto assigned address mode. Can I assume the 'clock' started running at that point before I set a static address??

I hope that made sense.

 

[videobruce]

I just wanted to know if my assumptions etc. were correct or did I miss a few?

 

[VirtualLarry]

That sounds right. If you assigned a (Static DHCP assignment - not a true "Static IP"), then a device that was configured for DHCP, would only update it's IP, I believe, when it came time to renew the DHCP lease, at which time it would pick up the statically-assigned one.

(A true "static IP" is assigned on the host device. A "Static DHCP assignment" is assigned on the router.)

 

[videobruce]

(A true "static IP" is assigned on the host device.

That is exactly what I did. What in my post lead you to believe otherwise??

 

[HutchinsonJC]

Streaming box (Fire TV 2)... did this device pull an IP through DHCP from the router (.54) before you assigned one to the device manually?

Could be just lease time.

 

[videobruce]

I have to assume it did.
Without a WAN connection, the only functions available are the settings menu. I did not set a static IP at that time since this is 'new ground' to me.