We have a network consisting of approx. 28 ScreenOS devices i.e. NS5GT, SSG5, SSG20 anSSG-320M. We have OSPF areas numbered as follows 10, 20, 30, 40 etc. I have read that areas are numbered differently in JunOS e.g. 0.0.0.1. The plan is to gradually replace the ScreenOS devices with SRX320 and SRX340 models, but can this be done in a controlled fashion given the different ways OSPF areas are referenced?