Last night we swaped a 7206-VXR in for our aging 7206. We'd had\nthe VXR for a few weeks, it had been powered up for a couple of\nweeks and tested some, though not of course moving actual traffic.\nAt any rate, we hadn't seen any glitches.\n\nSo we pulled the PAs from the 7206, installed them in the VXR,\nbooted, watched it for a while and went home. Half an hour later\nwe were off the net. Since it was about 2 a.m. and I was in no\nshape to troubleshoot, I went in, swapped the cards back into the\nold router, booted it, and went home.\n\nHere's the strange thing: When I got there, there were _no_ lights\non the VXR -\-\- not even the power LED. There is no indication of\nanything going wrong in the console log (we use the serial console\nto manage our routers, and conserver to log console activity). The\npower switch was on and the power cable firmly connected on both\nends before we left, and no gremlins broke into our machine room\nin the mean time. No other machine experienced a power loss.\n\nDoes anyone have any idea where I should even start\ntroubleshooting this?