Greetings,\n\nWe recently provisioned a 7206VXR in order to handle expansion in the near\nfuture. We moved our single T1 from our 2620 to the 7206 without issue\nhowever about 4 hours later access to the Internet had been abruptly shut\noff. In a panic, the tech on duty rebooted the router which brought\nthings back to life. After closer inspection it was noted that the fast\nethernet interface was showing several input and CRC errors. The serial\ninterface with the T-1 connected showed an equal number of input errors\nbut no CRC errors. After switching the T1 back to the 2620 the errors\nstopped on FE0/0 and no matter how much traffic we throw at it in this\nstate the errors just aren't there. If we reconnect the T1 they come back\nalmost immediately. My personal experience with Cisco routers is limited\nto the 16xx, 25xx and 26xx series and I have noticed a bit of a learning\ncurve with the 7206. My concern at this point is that I have made some\nsort of configuration error. Any advice that would help resolve this\nissue would be greatly appreciated. The hardware loadout on the router is\nas follows:\n\n7206VXR/NPE300 256MB\nPA-A3-8T1IMA\nPA-MC-4T1\n\nIOS version 12.3(1)\n\nRelevant configuration information:\n\ncontroller T1 1/0\nframing esf\nlinecode b8zs\nchannel-group 0 timeslots 1-24\ninterface FastEthernet0/0\nip address 192.168.10.5 255.255.255.0\nduplex full\nno cdp enable\n!\ninterface Serial1/0:0\nip address 10.101.16.166 255.255.255.252\nno cdp enable\n!\nrouter rip\nversion 2\npassive-interface Serial1/0:0\nnetwork 192.168.10.0\nno auto-summary\n!\nip classless\nip route 0.0.0.0 0.0.0.0 Serial1/0:0\n\nIP addresses have been changed to protect the names of the innocent. If\nadditional configuration information is required please ask and you shall\nreceive. Again, any insight into a possible resolution for this issue is\ngreatly appreciated. Thank you in advance for your time.