On Jul 16, 2011, at 1:18 PM, <hvlems at zonnet.nl> <hvlems at zonnet.nl> wrote: The Montagar licenses include all the DECnet licenses. There is no reason to limit yourself (today) to endnode functionality. SHOW NETWORK(/OLD) gives useful information. I'm not sure what the router rules are. There are 63 areas, each with one actove area router. There may be more routers configured as an area router in one area; the one with the highest (?) DECnet address is selected as the active one. No, an L1 router will pick the nearest L2 router (lowest cost path to it). End nodes will send to the elected designated router for the first packet, and will (depending on the exact version) send subsequent traffic back to the router that sent it the reply. (That's the "previous hop cache" which in the original Phase IV started out as the "on-Ethernet" cache but was later generalized.) There are limits on the number of routers. There are counters in NCP, executer max circuits and exec maximum routers. Max routers is the max adjacent routers on Ethernet; it does not limit the total number of routers in the area. paul