True. DECnet is a private network technology, so the assumption is that it= can rely on correct management of the routers. And MTU size is one of the= things assumed to be done right. DEC's network for a long time used 576 a= s its MTU; I would assume even a 2020 can be set that way, how else could s= uch a node have existed on the DEC Easynet? paul 2020 can only do three hundred something, my memory fails on the exact number. Maybe it ended up being 376. It's not a problem as long as it's END NODE, decnet will negotiate the smaller numer. The doc said that it only suports ONE serial interface.... --P