[mod.computers.vax] IBM-VAX connections

WITLICKI@WILLIAMS.BITNET.UUCP (02/27/87)

From Glenn L. Vanderburg:
>The only thing I know of is jnet....
>
>The big problem is that the only other driver they supply is for an asynch
>connection which is terribly slow...
 
   jnet supports two types of links:
           - binary synchronous communication (BSC) lines
           - DECnet virtual circuits
   the BSC links can be over a DMF32 sync port at up 19,200 baud or
over a DUP11 at up to 9600 baud.
 
   if you are talking locally this certainly can be a bottleneck,
but if you are an educational institution going out over BITNET,
then you have to realize that most of BITNET talks over 9600 baud
leased phone lines and getting a file or message to an adjacent
node at DECnet link speed will only result in it queueing up there
before going out at 9600 baud.
 
- randy