I have a Cisco 1751 with only one WIC-1DSU-56K card in it. I had configured it for point-topoint frame-relay about 2 weeks ago. Everything was fine ,tested to remote site perfectly and stayed that way 24/7, until today! Nothing has changed including enviroment and confiuration(triple checked config). Now I can not ping s0/0 or beyond. Lights on card show that my frame-relay conn. is hot. Even if it was not hot i should still be able to ping the WAN side of router. All lights are green on card and router. Have no prob. pinging ethernet side. Rebooted router, reseated WIC-1DSU-56K card, with no results. Please anything would help!