Hi,
Yes, this is the reason for the router restarting. If it is restarting due to memory parity error every time, then you're running into a hardware failure. A one time restart due to parity error can be written off as a fluke, but you should never see such an event more than once. If that is the case, I'd recommend opening a TAC SR if you have a smartnet contract to get a replacement.
HTH,
Bobby
*Please rate helpful posts.