HP Color Laser keeps dropping offline

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donawalt wrote:

Thaks FURRYe38 for the explanation and the terminolgy clarifications. Just so I understand though, I don't see a risk in setting the reservation equal to the static IP address a printer uses, right? You can introduce or see problems/conficits or bad router behavior on the router or device if you have in use both STATIC and RESERVED methods using the same IP address. This is why either you use a static IP or a reserved IP, not both at the same time.

 

The DHCP server will never issue that IP address unless there is a match on the printer's MAC address, and no device will ever ask specifically for the reserved IP address since the static/manual entry of that IP address at the printer means it won't do a DHCP request. The DHCP can issue the same IP address if a static IP is with in the default IP address pool. This is why when using STATIC IP addressed devices, they are used OUTSIDE the routers DHCP IP address pool.

 

Since NG defaults there pool to 192.168.1.2 thru 254. Users can and is recommended to change this pool to something smaller. Like 192.168.1.100 thru .200. This gives the router room for 100 device IP address assignments which in some cases will never be exhausted. Then on either side of this pool, there is plenty of room for static IP addresses devices, that the routers DHCP server will never issue. 

 

What you recomend as a best practice makes total sense in a larger network - any static address setting inside the DHCP pool better be reserved to a device that will never ask for it, otherwise there will be duplicate IP addresses all over the place. Plus if for whatever reason I ever change the static address on the printer, or change/delete the reservation, I will have duplicates too. But as it stands, so I understand, my only risk is a 'maintaining the network issue', not that what I have right now won't work?

Best practices if for any networking, both larg business and some home networks if some home users want to ensure there network is configured and flexible correctly. I have been using this for years, both before and after my networking training. Again this is normal and best practice for any networking environement. 

 

There will be not duplicate IP address if the pool size is changed and static and reserved IP addresses are used and configured correctly as per information mentioned above. 

 

Again, just trying to help you out to ensure the IP address is configured correctly. I have 3 HP printers on my network. ALL 3 are set on static IP address ON the printers and reside OUTSIDE of the routers default IP address pool. Thus nothing changes and printers are accessible from any device with intuitive IPs. 

 

 

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