A couple of times within the last week my TM-AC1900 has stopped communicating with the modem (UVerse RG). When it happens I can't ping the modem. After I reboot the router the problem is solved. Anyone else seen this sort of problem?
I experience this too when I have port mappings:
1 - Factory reset
2 - Test: works OK
3 - Set up a port mapping
4 - Restart router
5 - Router says connected to modem, but won't connect clients to modem.
6 - Press 'Apply' on port mapping screen (no other changes)
7 - Test: Works OK
8 - Reboot - back to step 5.
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