routers that will keep the dhcp leases in the flash memory?

If a router is turned off, it will keep its current list of active DHCP leases? Is there any router that will do it?

Sometimes when the internet is slow, my users will unplug the router/modem, but this results in IP address conflicts when new computers Gets a new IP address, but the router begins to give IP addresses since the beginning of the range that are already in use.

I know not all router consumer who would do this. Memory is rare on these routers and after a reboot, anything not absolutely necessary gets scrapped.

Your problem sounds more like a firmware bug or a problem of computers. By default, the DHCP server must check the availability of any IP address before sending a DHCP offer. He might try to resolve the IP through ARP or do an ICMP ping. Maybe the firewall on the computers block these packages. Or the DHCP server complies at all (that I consider a bug in the firmware).

What exactly needs to be verified with a sniffer network on a computer connected to the network. That should reveal if the router sends something to the DHCP offer or not...

Tags: Linksys Routers

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