Went on a call to a new client today, who has been having issues with their network. They have a DSL modem with WiFi on channel 1 (Since disabled) cascading to a TP-LINK Archer c5400 (Upgraded firmware today). They are working on getting the PPPoE (Centurylink DSL connection) so we can bridge the DSL modem and set the router up properly. Some devices hardwired and wireless will not function because they are getting a DHCP address from the DSL modem. I can log into the DSL modem on those computers. Is this a malfunction in the TP-Link (It only happens less than 10% of the time and very random on devices)? I have had very bad experiences with TP-Link switches, are their routers any better? The owner said the problems have always been existant and the old IT company (who installed it), could never get it working 100%. I am recommending replacement of router, but wanted to hear thoughts on this subject. The client will be ordering their own new router, and won't have until Monday. This should be a non-issue once the modem is bridged.
If I release the DHCP enough times, it will go back to the correct DHCP server of the router and start working properly. The DSL modem is not accessible by devices connected when getting the working IP address.